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Deploying Solar In California's Urban Areas Could Meet Demand Five Times Over

Lucas123 writes: About 8% of terrestrial surfaces in California have been developed, ranging from cities and buildings to park spaces. If photovoltaic panels, along with concentrating solar power, were more effectively deployed in and around those areas, it could meet between three and five times what California currently uses for electricity, according to a new study. The study from the Carnegie Institution for Science, found that using small- and utility-scale solar power in and around developed areas could generate up to 15,000 terawatt-hours of energy a year using photovoltaic technology, and 6,000 TWh of energy a year using concentrating solar power technology. "Integrating solar facilities into the urban and suburban environment causes the least amount of land-cover change and the lowest environmental impact," post-doctoral environmental earth scientist Rebecca Hernandez said.

437 comments

  1. Re:Without workers power by Thanshin · · Score: 0

    All that electrical power will only be used to oppress the workers more. Capitalism is at a dead end. Socialist revolution is humanity's last and only hope.

    Rather than "last and only hope" I'd say "next stage in the eternal progression of socioeconomic systems".

    I'm sure after a few centuries a human being will say "Socialism is at a dead end. Balancianist revolution is humanity's last and only hope."

  2. Space for solar hasn't been much of a concern by Firethorn · · Score: 5, Interesting

    The main concern for solar hasn't been one of the space necessary for a long time. Partially covering something like half the south-facing side of a roof has been sufficient to cover a home's needs for quite some time. A few more percent in panel efficiency would only decrease the coverage necessary.

    Like for most things, the real killer has been cost. Smaller footprints are good, reduces cost and increases flexibility(you don't NEED to take down that one tree...). Today it's getting to the point that we need to work to make installs cheaper, including the inverter, which of the items that can fail, currently have the lowest warranty period as well. If you 'plan' on replacing it once it's out of warranty, you'll go through 3 inverters per replacement of the solar panels. Yes, both actually last longer than that, but it's an expense to be wary of.

    Personally, in order to manage cost I like to propose 'dual use' applications - solar panels on a roof can act as a solar barrier and reduce the heat load in the house, reducing electricity needs for HVAC even as it supplies electricity for the very same HVAC. My latest 'idea', which is far from unique, is the 'solar car park'. We know people like parking in the shade, and solar panels are typically* strong enough that you can use them directly for roofing material as long as your roof is either small enough or you don't need it to be absolutely tight(like for a house). A few dribbles won't hurt a car but the shade certainly would be nice.

    So you mount the panels up over your parking lot(or driveway), and you come out to a shaded, and therefore not blazing hot, car. You park at the store and again, don't come back to a blazing hot car. As a bonus, it'll even extend the life of your paint job and interior, as well as help protect any sensitive electronics that don't like baking in a hot vehicle.

    *Some are, some aren't, but it's easy enough to specify/check.

    --
    I don't read AC A human right
    1. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 3, Interesting

      Partially covering something like half the south-facing side of a roof has been sufficient to cover a home's needs for quite some time.

      Only true if there is something else to supply electricity at night. Net zero is not off the grid. The thing is that if cheap solar eats into the day production from conventional thermal then night power will become more expensive.

    2. Re:Space for solar hasn't been much of a concern by Aereus · · Score: 3, Insightful

      Feed into a small molten salt reservoir buried in the yard to pull out of at night? Or some sort of battery to draw out of instead? Assuming high-draw appliances like the stove, water heater, and furnace were from an alternate source like natural gas, the rest shouldn't draw all that much power at night. And even the water could be switched over to an on-demand system, rather than what most US homes use right now.

    3. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 2

      The main concern for solar hasn't been one of the space necessary for a long time. Partially covering something like half the south-facing side of a roof has been sufficient to cover a home's needs for quite some time. A few more percent in panel efficiency would only decrease the coverage necessary.

      This is not always true...

      I live in Texas, we get a decent amount of sunshine...

      My house faces "south/north", the roof is split between the two, so half of it faces almost directly south. If I cover every bit of roof that faces south with solar panels, I'll produce about 1/3 of my annual electrical consumption.

      It is not possible to completely offset my annual consumption, I don't have enough roof space.

    4. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Feed into a small molten salt reservoir buried in the yard to pull out of at night?

      Molten salt only works from high intensity solar concentrates and is not something that can be installed in one's back yard. Also, very few high rise apartments have back yards.

      Assuming high-draw appliances like the stove, water heater, and furnace were from an alternate source like natural gas,

      I thought solar was supposed to allow us to use less fossil fuels like natural gas and not more. Any gains by using solar may be wiped out by burning more natural gas to make up for storage problems. I don't think that is a good plan.

    5. Re:Space for solar hasn't been much of a concern by TheReaperD · · Score: 1

      That's what the suggestion of using solar panels to cover the driveway. It creates sun protection for cars parked there or anything you want to do and generates electricity at the same time.

      --
      "Be particularly skeptical when presented with evidence confirming what you already believe." -
    6. Re: Space for solar hasn't been much of a concern by einar.petersen · · Score: 1

      You can even buy those solar roofs for car parking lots and they are on wheels for your convenience. Read about the concept some time ago so your idea is very sound indeed and can be sprung into action the moment after placing your order. Go talk to your mall owners if they don't have the doe get an agreement that you supply the pabels. They buy the power. Both parties win. They get renewable and can advertise they are a responsible company and you provide a service to society by making the environment cleaner and you'll make money doing it. Opportunity awaits those who act and imagine going to sleep at night knowing in your heart you have made a difference and that you are one who acts proactively rather than just reacts to whatever happens. Kudos to you and your thinking!

      --
      MS, ALS, Aphasia ? http://globability.org - Me http://einarpetersen.com
    7. Re:Space for solar hasn't been much of a concern by nospam007 · · Score: 1

      "My house faces "south/north", the roof is split between the two, so half of it faces almost directly south. If I cover every bit of roof that faces south with solar panels, I'll produce about 1/3 of my annual electrical consumption."

      That's because you have never heard of the word 'insulation'.

    8. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Only true if there is something else to supply electricity at night.

      Good point, I should have remembered to stick a 'net zero' in there. You could do it with a battery, but like I said, expense is the biggest issue, not room.

      --
      I don't read AC A human right
    9. Re:Space for solar hasn't been much of a concern by itzly · · Score: 4, Insightful

      I thought solar was supposed to allow us to use less fossil fuels like natural gas and not more. Any gains by using solar may be wiped out by burning more natural gas to make up for storage problems. I don't think that is a good plan.

      These problems are not going to get solved by whining about them. Instead, we should just build the solar panels. At first, storage won't be a problem, because we can use the peak energy for A/C. And when solar power actually grows to a point where storage is a problem, it will be fixed, because there will be money to be made in energy storage.

    10. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 2

      Feed into a small molten salt reservoir buried in the yard to pull out of at night?

      As jklovanc said, that only works when you're powering a turbine via heat. It would be a highly wasteful system to transform that electricity into heat, only to turn it back into electricity again. LiIon batteries are around 80-90% efficient at transformation, the suggested heat system would be lucky to hit 30%. Especially when you consider economy of scale when it comes to insulation.

      Now, a small heat reservoir like a BIG hot water tank that can also provide heating to the house itself if necessary would work. Especially since the heat differential should be low enough to use a heat pump for it.

      As for the water heater - 'On Demand' means that when the customer/home owner asks for hot water, he gets hot water. You're thinking about a supply-driven system, which many water heaters actually are for a cut from the electric company. A 50 gallon tank is generally good for a shower or two before things become unacceptably cold, even up here where the water from the well is only a degree or so above freezing. Switching to a bigger water heater, or even two, isn't out of the question, especially if you install solar thermal heaters.

      --
      I don't read AC A human right
    11. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      I thought solar was supposed to allow us to use less fossil fuels like natural gas and not more.

      90% efficient burners means you end up using less natural gas than you would using electric appliances, with the natural gas being burned at the electric plant.

      It's not the 'best' of plans, but it would still reduce our CO2 emissions, especially if it's displacing coal. That being said, something like a 'retired' Tesla Model-S battery with half it's capacity remaining would be able to run most electric appliances, even if you might need a system smart enough to not turn on the water heater and the stove at the same time.

      --
      I don't read AC A human right
    12. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 4, Informative

      I'm sorry that I often forget my disclaimers like 'excluding outliers', 'average situation only', etc...

      As nospam mentioned, there might be a problem with your house. Now, I'm no expert, but I'd need some more information to do an assessment:
      square footage of the south facing side of your house
      annual kwh usage

      For example, I'm an outlier. I'd have to completely cover my south-facing roof with solar panels to match my usage, but I live in Alaska.

      Some things that might be 'nice to know':
      Have you ever had an energy audit of your house done? Do you know what the R-Value of your walls/roof is? What's the SEER for your air conditioner? If you're using more than 3X the power that could be generated by solar for your roof, you may be better served by installing more insulation, replacing a marginal HVAC system with a more efficient one, etc...

      Heck, I pointed out that solar panels can help cut HVAC requirements by their mere presence - they're not normally installed directly on the roof, so that few inches acts as insulation(and can even create a heat chimney effect to keep things even cooler), preventing direct sunlight from heating the roof extra, increasing cooling needs.

      --
      I don't read AC A human right
    13. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That's because you have never heard of the word 'insulation'.

      That is a mighty big assumption you have there...

    14. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That wouldn't be enough either...

      Cooling a home in the summer in Texas uses a lot of power... My house is big but my lot is small, the roof is bigger than the driveway is...

      And consider the cost of putting up a structure that would withstand storms, that adds even more to the cost, making it completely and totally pointless...

      ---

      I have to say, all these wonderful ideas are great, until someone has to pay for them...

    15. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 5, Insightful

      Solar is already causing a problem. It is called the duck graph. Basically as solar rapidly drops off at sunset conventional is having trouble ramping up to meet demand. There is too many incentives for solar production and not enough for storage and that needs to be changed now.

    16. Re:Space for solar hasn't been much of a concern by Sabriel · · Score: 1

      A solution would then be to have the molten salt system (or whatever thermal energy storage system is most practical) fed power from/to multiple houses.

    17. Re:Space for solar hasn't been much of a concern by sjames · · Score: 5, Insightful

      If only we had a way to predict when the sun would set...

    18. Re:Space for solar hasn't been much of a concern by sjames · · Score: 1

      Solar water heating is often a hybrid approach where a large preheat tank is solar heated and feeds into an on-demand heater to get it up to full temperature.

    19. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 2

      There is a limit as to how fast a plant can ramp.

    20. Re:Space for solar hasn't been much of a concern by sjames · · Score: 3, Informative

      If you offset the panels from the roof by a few inches, the cooling demands will likely go down. The sun will heat the panels rather than the roof and convection will carry that heat away.

    21. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I'm sorry that I often forget my disclaimers like 'excluding outliers', 'average situation only', etc...

      I do understand... you may very well have meant well... but so many people leave out details and as they say, the devil is in the details...

      A good example is that while the panels may have a long life and even a good warranty (assume you can get service on that warranty in 5-10 years), other parts such as the inverter are not so robust. What is the actual ongoing MX cost over 10 years? It is bound to be more than zero. It might not be much, I honestly don't know, but that issue is brushed under the carpet more than I care for.

      Have you ever had an energy audit of your house done?

      Yes, our electric company offers this and even offers a $50 bill discount and a pack of free CFL bulbs if you do it. They use a thermal camera to check for leaks and do a blower test to check the gaps in the house.

      Do you know what the R-Value of your walls/roof is?

      R-44 in the attic, the walls and windows are builder grade, so they are terrible of course. :) But we have so many windows it would be crazy expensive to replace them all.

      What's the SEER for your air conditioner?

      16, we had it replaced two years ago, a nice dual stage, dual speed TRANE unit that has saved a bunch on the summer power bills, it will outright pay for itself in about 7 years of ownership, 10 at the most. From that point of view, installing it was "free". It actually cost about $18,000 to install (5 ton downstairs, 3 ton upstairs), but it is amazingly better than the cheap 13 SEER unit the builder installed in 2001.

      If you're using more than 3X the power that could be generated by solar for your roof, you may be better served by installing more insulation, replacing a marginal HVAC system with a more efficient one, etc..

      Part of it is the windows, they are our single biggest source of lost energy. Due to the cheap windows installed and the frames used, we really would need to replace them outright. The glass isn't great, but the frames are just as big a problem. It would cost about $25,000 to replace them all. It would save power, but not as much has the HVAC did.

      The attic probably needs more insulation added, it was installed 14 years ago, and we probably could put a new front door on that would help as well.

      ----

      I get that not everyone uses as much power, but a 3,800 sqft house with 5 people living in it and working from home (both my wife and I work from home), uses lots of power. And of course we have a ton of "things" plugged in that suck power and electronics account for a decent amount, but HVAC remains the single largest item, it is most noticeable from winter to summer.

      We do have natural gas, so heat in the winter, hot water, the clothes dryer, and the stove, are all off the electric meter, so that helps of course. :)

    22. Re:Space for solar hasn't been much of a concern by mjgday · · Score: 1

      Wowsers, you either use a fuck-ton of electricity or have a remarkably small roof area.

      I installed PV for 10 years in .uk (a much less sunny place than .tx) and was able, in most cases, to offset people's entire annual usage with a north/south roof, east/west roofs present much more of a challenge.

      --
      foo
    23. Re:Space for solar hasn't been much of a concern by itzly · · Score: 1

      So, improve the design. For instance, in a plant that burns fuel to generate heat to make steam that drives a turbine, you can start with burning fuel, and storing the heat somewhere. When the power is needed, you quickly generate the steam, and run the turbine.

    24. Re:Space for solar hasn't been much of a concern by sjames · · Score: 2

      And the sun doesn't just blink off, especially across the whole state.

    25. Re:Space for solar hasn't been much of a concern by itzly · · Score: 1

      Pretty safe assumption given the construction of the typical US home.

    26. Re:Space for solar hasn't been much of a concern by itzly · · Score: 1

      And even less when you connect the grid to the next state.

    27. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      For the size of my house, yes the roof is actually quite small... 3,800 sqft and it is tall and short, with a very "broken" roofline that wasn't remotely designed to have anything installed on it.

      And yes, I've had it quoted and measured.

    28. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Wow that has never been though of. Even something a simple as that has problems. Holding heat for long periods is difficult.

    29. Re:Space for solar hasn't been much of a concern by drinkypoo · · Score: 1

      Cooling a home in the summer in Texas uses a lot of power...

      Only because of crap building codes which permit building homes inadequate for the conditions. If you built houses out of dirt you'd have lower cooling costs. But that would be alternative architecture in the minds of Texans.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    30. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 3, Interesting

      Here in Germany there are fears that the partial solar eclipse on friday will cause problems for the utilities as it will affect all panels at the same and in a relatively short time. There are hopes for a cloudy sky to reduce the effect.

      But all in all I'm pro solar.

    31. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 2

      Did you look at the report? It happens over a three hour period more than doubling output and it is a problem.

      The existing fleet includes many long-start resources that need time to come on line before they can support upcoming ramps. Therefore, they must produce at some minimum power output levels in times when this electricity is not needed.

    32. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I don't think "dirt" is required, but I do know what you mean.

      And yes, they are allowed to build houses that have terrible insulation, but people like it because they are cheap.

      I could, right now, spend many tens of thousands of dollars to properly insulate my home, the payback varies, but the single biggest problem I have is my windows. But good replacement windows and frames are expensive. :(

    33. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      That does not help California as the rest of the US is dark before they are. There are not many solar panels in the Pacific Ocean.

    34. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That being said, something like a 'retired' Tesla Model-S battery with half it's capacity remaining would be able to run most electric appliances, even if you might need a system smart enough to not turn on the water heater and the stove at the same time.

      That is a great technical answer that does nothing to address the reality of it...

      Our homes are not smart and not likely to become smart any time soon...

      What you describe probably could be done and without inventing anything new or fancy. What it DOES require is money, lots of money. Who is going to pay for all that?

      Hooking it up to the house, having appliances smart enough to know when to run, etc. is all going to cost a lot of money.

      It is the actual implementation part that causes such ideas to fall apart. As nice as they sound, going out and re-configuring millions of homes is going to cost more money than anyone is actually going to spend.

    35. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 3, Interesting

      You could do it with a battery

      I'm not sure why people keep saying this...

      You're asking people to switch to a new type of lifestyle, one in which they may or may not have power to last through the night. Make your power during the day, charge your battery, then use it at night.

      What if the weather is bad for a few days? No power?

      This only works if you shut down the power plants, if they still have to exist, then this doesn't work because they have large fixed costs of existing that have to be paid for.

      We often run our AC at night, it gets quite warm and without it it would be nearly impossible to sleep. Are you suggesting we would have a big enough battery to run the AC for several days of no solar power?

      Do you have any idea how big that would have to be?

    36. Re:Space for solar hasn't been much of a concern by durrr · · Score: 1

      I would really want to know where the 15000 TWh figure comes from, considering that it's 3x the US annual electricity consumption.

      And to reach that figure you would: assuming you have the same MWh density as the topaz solar farm. Require something like 300 000 km^2. Which isn't 8% of California but more like 75%.

    37. Re: Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 1

      Already being done.

      Large thermal mass gas plants are being decommissioned all around CA, and replaced by rapid responding low thermal mass plants.

      The problem is that the large, slow plants are 61% efficient and the fast plants are 28% efficient.

    38. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Wowsers, you either use a fuck-ton of electricity or have a remarkably small roof area.

      I just looked it up, in 2014 we used 25155 kWh of electric.

      Is that "a lot"? I don't know... It is about 20% less overall than it was the year before, when we replaced our HVAC system with a much better one, so that helps...

      To replace 100% of the power we use, we'd need about a 18 kW system.

      At $4 a watt installed (grid tie, inverters, second meter, etc.) it would cost $70,000 to install that (probably less given the size), assuming it would even fit, which it won't.

      We have no city/state rebate worth talking about, but the 30% federal rebate is nice, giving me an after tax cost of $49,000.

      The payback is about 18 years, give or take a few, since I pay 11 cents per kWh today. My price per kWh over 20 years? about 9 cents, so it DOES save me money, IF I stay here 20 years, and if I want to put all that cash out up front. If I finance it, the interest eats up the savings and costs a bit more.

      Which is all beside the point, such a system wouldn't fit on my roof. I can get about a 6 kW system on my roof, cutting all those numbers by a third.

      It would cost me about $25,000 up front ($17K after taxes) to install such a system, all to save $100 a month on my power bill.

      ---

      If that sounds stupid, that's because it is... :)

    39. Re: Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      lol no one is decommissioning 61% plants for 28%.

    40. Re: Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 1

      The problem is that this type of store increases capital costs.

      Solar is displacing fossil energy, so the remaining fossil plants run fewer hours and at lighter load, so there is less opportunity to recoup capital and finance costs.

      This is why utilities in CA are cancelling plans for capital intensive low CO2 plants and building the cheapest, simplest most polluting backup plant that they can obtain.

    41. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Sorry, the hardware to make that kind of control decision is less than $5, override it anywhere on earth for $7 total cost. I'll write the software over lunch for free. Give me a break. Endless excuses from people afraid of changing. or doing anything different.

    42. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      I just looked it up, in 2014 we used 25155 kWh of electric.

      Is that "a lot"?

      Yes it is. When all of us kids still lived at my parents, we used about 7000 kWh with 5 people. Now that I live on my own, I use between 2500 and 3000 and that includes heating water in an 11 kW boiler and an always on PC.

    43. Re:Space for solar hasn't been much of a concern by mjgday · · Score: 1

      Wowsers, you either use a fuck-ton of electricity or have a remarkably small roof area.

      I just looked it up, in 2014 we used 25155 kWh of electric.

      Is that "a lot"? I don't know... It is about 20% less overall than it was the year before, when we replaced our HVAC system with a much better one, so that helps...

      Well the average uk household uses 4.6 MWh/year so yeah, you use 5 times what I'm used to having to provide. I suppose that's the price of living in desert and not acclimatising your body to the heat.

      To replace 100% of the power we use, we'd need about a 18 kW system.

      At $4 a watt installed (grid tie, inverters, second meter, etc.) it would cost $70,000 to install that (probably less given the size), assuming it would even fit, which it won't.

      We have no city/state rebate worth talking about, but the 30% federal rebate is nice, giving me an after tax cost of $49,000.

      The payback is about 18 years, give or take a few, since I pay 11 cents per kWh today. My price per kWh over 20 years? about 9 cents, so it DOES save me money, IF I stay here 20 years, and if I want to put all that cash out up front. If I finance it, the interest eats up the savings and costs a bit more.

      Which is all beside the point, such a system wouldn't fit on my roof. I can get about a 6 kW system on my roof, cutting all those numbers by a third.

      It would cost me about $25,000 up front ($17K after taxes) to install such a system, all to save $100 a month on my power bill.

      It's worth noting that installing renewable energy generating kit on your roof will increase the value of your house. So even if you decide to leave before you've paid off the costs of the installation you should be able to recoup all your investment by increasing the sale price of the house.

      But really you need to address your flagrant overuse of electricity.

      Might I suggest wearing fewer clothes ;P

      Seriously maybe think about redesigning your dwelling to be passively/naturally cool, I recall seeing a system of vents with damp cloths hung under the house to "aircon" homes in the outback (no grid so power is a series expense out there) which worked quite well, and I suspect that the Egyptians and so forth also know a thing or two about keeping buildings cool in hot places without having to run a compressor.

      --
      foo
    44. Re:Space for solar hasn't been much of a concern by Barsteward · · Score: 1

      Solar panels work just fine in ambient light and will produce significant energy in the fog or on overcast days. Sure, you'll lose some, maybe upto as much as 50% efficiency in really overcast days, you'll just have to get a bigger battery to reduce the "range anxiety" type issue. Solar panels are actually more efficient at cooler temperatures than hot ones. Germany leads the world in residential solar right now, and doesn’t have a sunny climate.

      If people insulated their houses to a high level like PassivHaus, they will find that they are far less reliant on heating/cooling systems because the insulation keeps the house at stable temperatures

      --
      "The hands that help are better far than lips that pray." - Robert Ingersoll (1833-1899)
    45. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 1

      Nothing is brushed under the carpet. You are just purposefully ignorant of basic facts., From a complete, lifetime systems perspective, energy efficient construction and residential solar power for new construction pair are the economical choice, and if natural gas is included for 6000+ HDD climates, over the entire continental US. They are the economical choice from day one, as typically, consumers find their lowest possible rates of capital on new construction. No fucking brainer.

      1. You don't service a solar panel in 5-10 years, it will be replaced, very likely with a substantially superior product. If your manufacturer is out of business, the reputable ones will have reinsurrance policies and the panel replacement will be covered by one of the mega insurers. Next.

      2. Inverters are reliable and cheap, many micro-style inverters are warrantied for 20 years. Furthermore costs on conventional inverters are under 30c/W. Ammoritize that over 12-15 years that it might fail (but probably will not), this adds less than one penny per kWh to your production period. So you either end up with a couple thousand dollars or less than a penny per kWh on your utility costs. Lower a fucking shade over your window. Nonetheless, it will easily fall within the typical 1.5% OPEX usually assumed (and frankly over estimated) for solar power.

      3. the difference between those builder grade windows and ones with appropriate coating, SGHC rating, and building orientation would have likely have been inconsequential, like most other "builder choices," its arbitrary because builders are essentially retarded. Literally builders and generally contractors are retarded. Virtually all of them. They don't understand what they do. They don't think long term. And they have no incentive to change because their clients are also retarded. They all make sub optimal decisions and then effectively whine about their own stupidity. Even high end windows (up to triple pane depending on orientation and climate) make sense financially on new construction. The cost of builder-installed solar power falls by upwards of 60% on new construction. Planning for and installing solar power on a new residential structure eliminates most of the soft costs and over half of the install costs of solar energy. Equipment costs are already the cheapest on earth. It then becomes the cheapest energy on earth, cheaper in fact than a fully depreciated coal plant with no pollution control burning wet lignite.

      4. 16 SEER sounds like garbage built for absurd and expensive forced air central air conditioning systems. I'm guessing from your 8 tons of cooling you live in some god awful inhospitable shithole of a desert, don't use external shading on your excessive south facing glazing, or you have thousands of unused sq ft in your monster home. Just my cheap shot. You could get a god damn ref tech license, buy all the equipment and outfit your house with 23-25 SEER minisplits for less than you paid for that shitty system. Then charge $400/hr converting all your stupid friends.

      Here's the thing, building a house intelligently saves more money than the cost of solar energy to power it. At the end of the day, 10s of millions of people and their stupid wastefulness remain "skeptical" that its actually cheaper to not waste, but that skepticism ends precisely where they have to spend 5 seconds to learn something. And its confirmed by everyone else who is effectively too lazy or apathetic to want to do things differently.

      You have 8 ton of cooling in a house. You live in a shithole of a building. That is your problem.

    46. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      lol. 9,000-10,000 is the US household average. Your house is like commuting to work in a fucking dump truck. Solar city is leasing solar effectively at a cost of around $2.50-$2.70. The hardware costs are about $1.10. The problem with residential solar is you are getting ripped off on the install. See my above. This is mainly because contractors are retarded. Best installers can put it on your roof at $2.20 now. If they were fully utilized, these costs would be about $1.70-$1.90, but they have to rip you off because everyone is too retarded to realize solar is the answer. fyi, I use about 4000 kWh annually, 160kWh/mo baseline, the rest for AC.

    47. Re:Space for solar hasn't been much of a concern by TapeCutter · · Score: 1

      even up here where the water from the well is only a degree or so above freezing

      I recently visited "The Kimberly", it's one of the hottest places on Earth, the well water is pumped into a water tower for pressure where it sits in the tropical sun all day. It's impossible to have a cold shower, if you get up first in the morning there is about 30 seconds of cool water from the underground pipes before the ~32deg C tank water comes thu.

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
    48. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 2

      "It will be fixed" is the same as saying, "we will do magic."

      It won't be fixed until someone invents the magic battery. We also need the magic battery for making our transportation work on electricity. The magic battery needs to be cheap and small and cheap and high capacity and cheap and lightweight and cheap. That's not going to happen by magic. All these energy protesters and environmental protesters and carbon tax advocates are not going to help a damned bit unless they get their PHD's in electrochemistry, get their butts into a lab someplace, and invent for us the magic battery. THEN we might get somewhere with electricity from "renewable" sources.

    49. Re:Space for solar hasn't been much of a concern by LordLimecat · · Score: 2

      Feed into a small molten salt reservoir buried in the yard

      Last I heard molten salt was still being worked on because it is insanely corrosive and generally nasty to work with.

      That doesnt exactly scream "put a resevoir in every yard".

    50. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If people insulated their houses to a high level like PassivHaus

      How much does that cost? What is the payback period?

    51. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      you'll just have to get a bigger battery to reduce the "range anxiety" type issue

      Of course there is more to it than the size of the battery, there is how much amperage the battery can put out at once.

      What type of battery is going to run my AC in the summer? A total of 8 tons of cooling, plus the rest of the house?

      I suspect that the cost of such a battery would be cost prohibitive.

      It is hard enough to get people to replace their 10-15 year old 13 SEER AC units, when the payback is clear on those, these pie-in-the-sky dreams of batteries and solar on houses are just nuts.

      Who is going to pay for all this?

    52. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 2

      "But really you need to address your flagrant overuse of electricity."

      Right there is one of my strongest objections to environmentalism and liberal politics, that being someone else thinking they have the right to tell someone else how to live.

      He can use exactly as much energy as he is willing and able to pay for.

      I recently logged 1705 KwH for a month of fairly cool winter month with geothermal heat. House about 1700 sq. ft. I'm living in Virginia right now, which has a lot of sun most of the time, but I'm originally from Ohio where I've seen the sun go behind clouds in November and not be seen again until sometime in January. Yeah, that happened one year, depressed the H out of me. Overcast sucks any time of year. But it'd take a H of a battery to be able to actually go off grid here, and in Ohio you better get a wind machine, 'cuz solar will let you down big-time. Hey, there isn't all THAT much wind in Ohio, either.

    53. Re:Space for solar hasn't been much of a concern by Rockoon · · Score: 1

      What you describe probably could be done and without inventing anything new or fancy. What it DOES require is money, lots of money. Who is going to pay for all that?

      One of the things I have learned over the years is that Californians don't worry about silly things like budgets and how to pay for things, and even less so the consequences involved in budgeting and paying for things.

      This is the State that has repeatedly fucked up its energy industry to the point of severe crisis. Seems to be planning to do it yet again.

      --
      "His name was James Damore."
    54. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Well the average uk household uses 4.6 MWh/year so yeah, you use 5 times what I'm used to having to provide. I suppose that's the price of living in desert and not acclimatising your body to the heat.

      It used to be about 20% higher, before we replaced our old single stage 13 SEER HVAC with a new dual stage 16 SEER HVAC. :)

      We could probably cut another 10-15% off that by replacing our windows and re-insulating our attic.

      As for adjusting to the heat, we don't live in a desert, I live in the Dallas, TX area, we get plenty of rain, but August tends to stay around 100 degrees with peaks in the 104 range (40C to those not on a backwards unit system)

    55. Re:Space for solar hasn't been much of a concern by gbjbaanb · · Score: 1

      The way the world works is not to imagine a system where we create the battery before generating the solar power - instead we generate as much as we can and at some point, someone realises they can make more money out of battery tech than it costs them to research it, and that's when they start researching it,

      In the meantime, there's a long time where we generate more solar power than we need - well, it makes no difference to me, they can sell it to whoever they can (maybe Californian plants can sell it to eastern states) meaning Californian solar has a better return on its investment, or they just dump it.

      What is important to understand is that nothing will ever happen if no-one starts it somewhere. So we've started generating power from renewables, one day we'll be good at it and it'll power everything.

    56. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 2

      It's worth noting that installing renewable energy generating kit on your roof will increase the value of your house. So even if you decide to leave before you've paid off the costs of the installation you should be able to recoup all your investment by increasing the sale price of the house.

      The market doesn't work that way here... It does raise the value of your home, but not by that much... You might get 1/3 of the cost of the system back, give or take...

      In the city I live in, we have about 250,000 people... Only about 100 homes have installed solar... It is just not a normal thing to do here...

      Part of the challenge I suspect is that if you're in the UK, you probably pay more than 11 cents per kWh, if we had to pay higher rates, more people would be interested.

    57. Re: Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Expense is exactly why it has to be fized through building codes. First there's the economy of scale. Secondly anything above the lowest level (i.e., meets code requirements) will have a premium surcharge. Lastly retrofits will beeven more expensive for something like this.

      So basically the only way you'll get adequate windows for a decent price is a huge advance in the state of the art to make current "premium" items the norm (and there is not that much incentive for everyone to suddenly jump aheah) or code to require something well established but, as of yet, uncommon like tripple pane vacuum sealed windows.

    58. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Then again we could blow coal fired plants out of the business by building MSRs.
      That leaves transportation as the next biggie that needs to be solved. It goes back to batteries.
      For 50 years I have been watching. Batteries are not getting better fast enough. This is
      a real problem that has so far resisted any solution much less a viable route to a low
      carbon solution. Electric trains could work but would they make a difference? Electric cars
      are barely usable currently. Futher, electric cars are still far to expensive for the common (wo)man.
      Face it folks; there is no easy answer.
      My personal favourite is Molten Salt Reactors which are so burdened with the Nuclear misconceptions
      that it is almost unsusable. Everybody should read . No matter how
      you cut it; the road ahead is not smooth.

    59. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      But really you need to address your flagrant overuse of electricity.

      What makes you think we overuse electricity?

      My home is 3,800 sqft (about 350 sqm). 5 people live here and I work from home. Between the HVAC, computers, and other electronic devices plugged in, we also have very tall ceilings which don't help (our great room/family room has 24' ceilings with floor to ceiling windows).

      I have made some effort to not waste power, most of our bulbs are replaced with CFL, our computers are set to go to sleep when not being used, etc. We don't leave lights on, we close the blinds during the day in the summer to block out some of the sun's heat, etc.

      We just use a lot of power.

    60. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I suspect that the Egyptians and so forth also know a thing or two about keeping buildings cool in hot places without having to run a compressor.

      Yes, but they don't get it down to 74 degrees without one either. :)

      Seriously maybe think about redesigning your dwelling to be passively/naturally cool

      That would cost a lot of money, and there are limits to what we can do anyway, we live in a nice area and the Homeowners Associations are rather strict as to what you can and cannot do. It can be annoying, but it protects the value of the home against the idiot who would paint their house pink.

      At the end of the day, my monthly electric bill is about $300. I would have to spend a lot of money to reduce it by much more than $100 or so per month (computers and other electronics use what they use). $100 is simply not a lot of money to me each month and I'm not going to spend tens of thousands of dollars to save a hundred bucks a month.

    61. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 2

      They can already make insane amounts of money if they're successful at making a magic battery for electric cars, because running cars on electricity is insanely cheap when you compare it to gasoline or even diesel. People would fall all over each other to buy them. People have been working on them for about a decade at least, but you know what? We still don't have it. Why? Because it is an extremely difficult problem. It may be a problem without a solution, as it my be impossible to store enough energy in a small enough space to use for powering a car without it costing more than the people can afford. It might just not be doable. We may NEVER get the magic battery, in which case we're going to have to, say, build railways where roads are, and have a catenary or other system to feed power to cars from an external source, and move cars that way. That may be too expensive too. But if a solution to this is not found, then the people can, in 200 - 300 years when the fossil fuels finally run out, look forward to living in poverty due to really expensive and scarce energy.

    62. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 1

      yeah, just improve the design of a quarter of a billion dollar power plant that's already built and cannot be turned off without plunging millions of homes into darkness.

      It'll be easy. I'll go get my hammer.

    63. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >As for the water heater - 'On Demand' means that when the customer/home owner asks for hot water,

      There's another version. In Brazil nobody has a water heater. What they do have is a small heater attached directly to the shower-head that heats the water as it comes out of the tap.
      It's cheap, efficient (since it only heats the water you're actually using) and reaches a passably acceptable temperature.

      It's not as hot as the showers I normally like but in Brazil that's not a problem because the country itself is bleeding hot as hell already.

      I'm not sure exactly what the temperature was (I would guess between 25 and 30 celcius) since the heater has only a short while to heat the water as it flows over it, but it was certainly "good enough".
      It may even have been much hotter than that, despite coming from a hot country (South Africa) I was not acclimatized to Brazil which is MUCH hotter, so the higher ambient temperature could have thrown me off.

      --
      Unicode killed the ASCII-art *
    64. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 2

      The magic battery needs to be cheap and small and cheap and high capacity and cheap and lightweight and cheap.

      On the bright side, cheap + cheap + cheap + cheap adds up to expensive, so that's already covered!

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    65. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Like for most things, the real killer has been cost.

      No, the price per kilowatt is steadily dropping as solar panel efficiencies rise and manufacturing techniques improve. The real killer has been political greed. Politicians are eager for kick-backs and pay-offs and several states have bowed to bribery (lobbying) by local power companies to implement extra monthly fees for solar users. The Feds also take pay-offs from power company lobbyists, that is why the Obama administration enacted stiff protectionist tariffs against cheap Chinese solar panels a few years back.

    66. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 2

      The night power needed is exactly the same regardless how you produce power at daytime, hence the cost is exactly the same.
      Further more private house holds usually have fixed rate contracts and are not bound to spot market prices ... so they pay at night the same as at daytime.

      For a private household it neither matters if "someone" connects a solar plant in the GW range to the grid or if they themselves connect a "rooftop" solar plant to the grid.

      Only legislations and feed in tariffs have an impact on price changes.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    67. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      It may be a problem without a solution, as it my be impossible to store enough energy in a small enough space to use for powering a car without it costing more than the people can afford. It might just not be doable.

      This is clearly not true, because we can already do it. What is this amazing energy storage medium called? Gasoline (or Diesel)!

      In a world where electricity is really cheap, hydrocarbon fuel is as simple as H2O + CO2 + electricity.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    68. Re:Space for solar hasn't been much of a concern by Smidge204 · · Score: 1

      It's called spinning reserve, and it's the reason electricity is often so much cheaper at night. Large thermal power plants can take days to shut down and restart, so they need to keep them running anyway.

      The problem can be mitigated through various means; and as problems go this is a pretty good one to have.

      Storage is the obvious solution. It doesn't even need to be high quality storage, but to reduce over-generation you just need a place to dump the excess energy. You could just dump this energy as heat but optimally you'd want to recover some of it. You don't even need enough storage to carry you through the night, just absorb the over generation and shave peak. Thermal storage would work fine for that, would be relatively inexpensive and could work with existing thermal power plants. Encouraging domestic battery storage, even a few kWh worth, would also help. Almost any existing hydro could be retrofitted for axillary pumped storage.

      Less obvious is to tinker with the solar panels themselves, tuning the orientation so you are optimized for late afternoon capture rather than maximum kWh/day generation. That makes the "dip" in the graph shallower and lowers the slope of the ramp.

      Retire old plants that are too inflexible to meet variable demand efficiently. In other words, ditch coal.

      Add usage penalties (aka "demand charges") during the ramp-up period. There are already demand charges for peak power, but spreading the demand charge out would incentivize energy efficiency and time of use habits.

      Basically, there is nothing here that can't be managed with existing technology, but commercial power producers are scared shitless they'll be out of a whole lot of money. Solar is a direct threat to baseline generation (coal and nuclear) as it pushes the usefulness of peak shaving generation (gas turbine) farther into the night hours and makes baseline generation all but obsolete.
      =Smidge=

    69. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      That is another FUD argument of the anti renewable crowd.
      Basically (a) as solar rapidly drops off at sunset conventional is having (b) trouble ramping up to meet demand.

      That is nonsense. (a) The drop off is not sudden or rapidly, it follows a sinus curve. Just take a piece of paper and draw a sinus curve stretched over 8, 10, 12 or 16 hours and you see the starting point and ending point of the solar (PV) generation phase is very long and smooth.
      (b) Grid operators know in advance which solar plants drop with which rate and adjust their other plants accordingly in time. There is absolutely no problem involved.

      not enough for storage and that needs to be changed now.

      On grid scale storage is irrelevant. The grid already has enough pumped storages or it would not work at all: right now.
      Storage is interesting for private plants, that want to make sure they have enough power over night. But: that means you have to increase the plant size considerably to produce the excess power you want to store at first! Economically that is rarely interesting.
      For the grid storage becomes interesting when you produce like 50% - 75% of your energy with solar and wind.
      When at night demand is down to 50% or less, and you indeed produce those 50% (or more) with renewables, then storage comes in handy.
      The idea that storage is currently preventing expansion of renewables is a myth and/or FUD.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    70. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      No, it would not.

      Physically it makes no sense at all to use a PV panel to create electricity to store that as heat in molten salt to use a heat to electricity converter again to extract energy from that molten salt.

      If you want to store heat in molten slat (or much more likely for small applications in a kind of paraffin, or even simply water) then you should have a heat converting solar plant that heats the storage directly and not go via PV.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    71. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >It can be annoying, but it protects the value of the home against the idiot who would paint their house pink.

      Now that sort of thinking pisses me off. I recently bought a second property, a home now that I have a child since I wanted her to have a yard to play in (the old apartment is to be rented out). I live in Cape Town, South Africa, when I started house-hunting I carefully found all the neighbourhoods where somebody had contractual rules about things like what colour I can paint my house and excluded them from the search.
      Even though they included some of the most sought after neighbourhoods - I refuse to live somewhere like that, this is why I can never live among conservatives. Seriously - their desire to control over people's self expression is just insane to me. If I want to die my hair pink I do (and have done) and if I want to paint my house pink - then fuck anybody else's opinion.

      To me -it ADDS value to a neighbourhood when every house looks different and unique. Expressing something of the owner's personality. It gives the neighbourhood character.
      One of the most beautiful suburbs in Cape Town is Bo-kaap just outside CBD. Where EVERY house is a different bright colour. Pinks and blues and yellows and reds - and most houses are several of those.
      Has this harmed property values ? Hell no ! On the contrary, photographers go there to do photoshoots because it provides such awesome backdrops and landscape photography opportunities.

      I bought in a different area in the end, mostly due to wanting to be closer to work - but I made sure that nobody will get to tell me what I can and cannot do with my house, ESPECIALLY aesthetically.

      Conservatives always talk of how liberals want to control people's lives when liberals care about waste and the environment... but to me, wanting to control how people dress, how they express their gender identity, their sexual orientation, whether they get married or not, whether they are monogamous or polyamorous or swingers or whatever else you can think off, what colour they paint their house, what art they display in the garden... THAT is so much more insidious.
      Liberals only want to ask you nicely not to do things that harm others.
      Conservatives want to control your very identity.

      I guess it just confirms once again why I will die still a liberal.

      --
      Unicode killed the ASCII-art *
    72. Re: Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      0% to 3% cost delta is typical. Not buying and installing heating and cooling systems pays for the improved insulation, windows, grey water heat recovery and building sealing. So payback ranges from "instant" to "very short."

    73. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      Modern passive houses cost about the same as any other house.

      However I have no idea how that compares to the super cheap low quality houses in the USA :D

      Actually, meanwhile the regulations are so strict that you have no chance to save money by building a house substandard.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    74. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 3, Insightful

      You're asking people to switch to a new type of lifestyle, one in which they may or may not have power to last through the night. Make your power during the day, charge your battery, then use it at night. What if the weather is bad for a few days? No power?

      Those problems are trivially (albeit perhaps not inexpensively) solved by simply specifying a big enough battery.

      We often run our AC at night, it gets quite warm and without it it would be nearly impossible to sleep.

      I'm 99% certain you have poor insulation (compared to what anyone who was trying to run their AC off solar power would have), and that's your real problem.

      Besides, almost everywhere except the tropics gets cool enough at night that opening windows and running a whole house fan should be able to let people avoid running the AC at night. (And houses in warm areas like that should be designed so that windows can be opened at night, by (for example) having wide enough roof overhangs to keep rain out. If you live in Florida and your house is designed the same way as one in New England, you're Doing It Wrong.)

      Are you suggesting we would have a big enough battery to run the AC for several days of no solar power?

      Yes!

      You might also want to keep in mind that if there's no solar power, there's not much solar heat gain either, so your AC will require less power at that time (if it needs to run at all).

      Do you have any idea how big that would have to be?

      By the time you've increased the efficiency of your house to the point that solar makes sense to begin with, the answer is "not all that big."

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    75. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 2

      We just use a lot of power.
      Yeah, that is the excuse we always here :D
      Why does the same flat in Italy, France or north Africa use less power? Wow? Ever thought about that?

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    76. Re:Space for solar hasn't been much of a concern by sribe · · Score: 2

      There is a limit as to how fast a plant can ramp.

      Coal-fired has this problem. Natural gas generators can ramp much faster, and can easily cope with this kind of load variance.

    77. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      What type of battery is going to run my AC in the summer? A total of 8 tons of cooling, plus the rest of the house?

      If your AC has 8 tons of capacity, then your house is either gigantic or incredibly inefficient. Normal-sized houses have ACs closer to the 2-3 ton range.

      In your case, it's entirely appropriate that a battery to run your system would be huge and expensive compared to a normal house's!

      I suspect that the cost of such a battery would be cost prohibitive.

      You sound like somebody who buys a 10 MPG Ferrari and then complains he can't afford gas.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    78. Re:Space for solar hasn't been much of a concern by Goldsmith · · Score: 1

      I realize from the rest of this discussion that you're in Alaska. Down in San Diego, solar covered parking is fairly common. We tend to have acres of parking lots at big businesses, malls, car dealerships, etc. These have been prime locations for solar parking shades.

      You can apply some financial/government subsidy wizardry to mitigating the cost of solar. Down here (for some houses), if you're willing to commit to paying your current average power bill every month for the next X years, someone will come and install solar on your house for free.

    79. Re:Space for solar hasn't been much of a concern by Bob+the+Super+Hamste · · Score: 1

      We can't have hydrocarbon fuel/storage technology. Don't you know that The internal combustion engine is the greatest enemy of mankind. Every time I drive to work it makes baby Al Gore cry.

      Now that I have that out of my system I really wish the US would pursue things like the Fischer-Tropes process you mentioned or other forms of thermal depolymerization instead of the silly corn based ethanol policy the US government has been pursuing. As a side benefit when fed biological matter one of the other outputs is carbon based solids mostly char which is actually a fairly good soil amendment and is good for long term carbon sequestration.

      --
      Time to offend someone
    80. Re:Space for solar hasn't been much of a concern by Bob+the+Super+Hamste · · Score: 1

      From my reading additional insulation has one of the lowest time to pay back periods of all home energy related improvements. typically in the 2-3 year range. Granted if you live in an are that has a fairly temperate climate it will have a longer payback period but still it isn't bad.

      --
      Time to offend someone
    81. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      wasn't remotely designed

      That's your real problem: your house "wasn't remotely designed" at all, such that it's energy usage is pathologically bad. It should never have been built the way it was in the first place.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    82. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Still not enough incentive for solar--- its just not THAT widely deployed. Realistically every rooftop should have solar on it. Not only generates heat, but also reduces heat to the building.

      But yes, you are correct, too, not enough incentive for storage either. Natural Gas turbines can carry until base load is needed, and you wont find much interest in storage until there is a truly large glut of excess.

    83. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Maybe they could use the excess to desalinate water...

    84. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      if only we had a way to adjust our schedules to better match the solar day........

    85. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 2

      We also have very tall ceilings which don't help (our great room/family room has 24' ceilings with floor to ceiling windows).

      On days that are only a little too hot (e.g. low 80s, not 100), try opening the windows on the first floor rooms other than the great room, and the upper windows in the great room. Your house should stay cooler than it would have been otherwise, hopefully cool enough to avoid AC.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    86. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      90% efficient burners means ...
      There are no 90% efficient "burners" and there never will be, that is physically impossible.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    87. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      I suspect that the Egyptians and so forth also know a thing or two about keeping buildings cool in hot places without having to run a compressor.

      Yes, but they don't get it down to 74 degrees without one either. :)

      What makes you think that? Between windcatchers and qanats, traditional desert architecture is good enough to maintain "a greater than 15 C reduction in the air temperature." That's a lot!

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    88. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      I wonder if we can change our homes to run on 12-48VDC since we no longer need to run AC across long distances with personal solar installs.

      Of all the things I use regularly in my home the only ones that don't switch 120VAC to 5 or 12 VDC is my fridge and lights - and the lights can be replaced with LEDs that *do* run on DC.

    89. Re:Space for solar hasn't been much of a concern by Applehu+Akbar · · Score: 1

      The one renewable that load-follows really well is hydro. Solar and wind can be paired with dams on the grid, so long as the overnight rise in river level stays tolerable.

    90. Re:Space for solar hasn't been much of a concern by morgauxo · · Score: 1

      Great! Now just buy me solar panels and a Tesla battery. Also negotiate with the people who just installed my new shingles so as not to break the waranty. Do all that and I am sold!

    91. Re:Space for solar hasn't been much of a concern by Ichijo · · Score: 1

      they must produce at some minimum power output levels in times when this electricity is not needed.

      Where electricity is always priced at market equilibrium, all electricity is consumed and therefore "needed" by some definition of the word.

      So during the ramp-up time close to sunset, the additional electricity causes the equilibrium price to fall, people consume more electricity at that time because it's cheap (perhaps to cook dinner or do laundry) and suddenly that electricity becomes "needed."

      The report hinted at this solution: "The resource mix would also benefit from...demand side response capabilities to help meet real-time system conditions."

      --
      Any sufficiently unpopular but cohesive argument is indistinguishable from trolling.
    92. Re:Space for solar hasn't been much of a concern by operagost · · Score: 1

      Building standards in the USA have required at least R30 in the attic and R13 in the walls for decades.* Not every state or local government requires every building industry standard, but that combined with consumer demands suggests "typical" homes have at least minimal insulation. You made the assertion, so you can provide the evidence that the "typical US home" has no insulation.

      * Yes, R49-R60 is more appropriate in the two coldest zones, but R30 is a good start. And we're talking cooling load, here.

      --

      Gamingmuseum.com: Give your 3D accelerator a rest.
    93. Re:Space for solar hasn't been much of a concern by operagost · · Score: 1

      A 3,800 sq ft flat is a bit unusual.

      Oh, I see. You were comparing heating and cooling a small apartment to a big house.

      --

      Gamingmuseum.com: Give your 3D accelerator a rest.
    94. Re:Space for solar hasn't been much of a concern by operagost · · Score: 1

      Maybe things are different in South Africa-- notwithstanding the drastic social progress made in the last few decades-- but in the USA, HOAs are not political organizations run by conservatives and you'll find plenty of "liberals" voluntarily living under them.

      FWIW, I hate HOAs because I don't like the idea of paying some org to tell me what to do. I don't care what my neighbors do as long as it doesn't damage my property.

      --

      Gamingmuseum.com: Give your 3D accelerator a rest.
    95. Re:Space for solar hasn't been much of a concern by AmiMoJo · · Score: 1

      There is a solution to this that benefits everyone except energy companies. Use those plants at low output to heat water or some other medium and provide heating to nearby homes and businesses. In the summer it can be used for refrigeration. With smart appliances they can communicate with the grid and plan their consumption for times when there would be otherwise wasted energy, or you could build the mother of all central air-con systems using pumped cold water.

      Once you get past the need to make a profit and start looking at the greater good, it gets much easier. Energy supply needs to be run by governments, the same as other infrastructure. Usefulness above profit.

      --
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    96. Re:Space for solar hasn't been much of a concern by AmiMoJo · · Score: 1

      Who has these fears? Stupid newspapers? Energy companies who are losing money?

      I'm really looking forward to this event, just to see how little effect it has in Germany.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    97. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Oh, c'mon people! It's so easy and obvious - put a large lamp over the solar panels. The solar panels power the lamp. When the sun goes down, the lamp will power the solar panels.

    98. Re:Space for solar hasn't been much of a concern by cnaumann · · Score: 1

      You use a small battery and a backup generator that uses natural gas or lp gas on site. Or use one of these:
      http://en.wikipedia.org/wiki/B...

    99. Re:Space for solar hasn't been much of a concern by w3woody · · Score: 1

      "Feed into a small molten salt reservoir buried in the yard to pull out of at night?"

      Who do you think I am? Dr. Evil?

      On the other hand, it may be useful to have a molten salt reservoir in my back yard, so I can dispose of the bodies...

    100. Re:Space for solar hasn't been much of a concern by suutar · · Score: 1

      How will an eclipse affect the solar panels more (or differently) than a cloudy sky would?

    101. Re:Space for solar hasn't been much of a concern by sjames · · Score: 1

      Perhaps they need to upgrade?

      Or they can make arrangements for interruptable circuits with large customers. Or they could use peaking plants to ease the transition.

      Or , given that the future clearly holds more solar and more wind, they could put in flywheel storage to ease the transition and other fluctuations in generation.

    102. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      I assume that you are aware that there are electric cars that you can buy today for a reasonable price which include a "magic battery" which can power the car for the average needs of the average commuter. My electric car is powered by one of these magic batteries which I charge from my solar panels and drive everywhere I need to go at any time.
      Welcome to the future, it is here now. No need to wait for the invention of some new magic technology. We have it today.

      --
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    103. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      I think you are ignoring the fact that you can buy an electric car today (from GM, Nissan, BMW, Tesla, etc.) which is insanely cheap to run (equivalent to gas at $0.40 a gallon). These cars cost a little more to buy up front but you save it in the long run with cheaper operating costs. No need for any new magic battery. We have the magic battery today. The faster people buy these cars, the better. We need to leave at least half of the "proven reserves" of hydrocarbons in the ground if we are to avoid climate catastrophe.

      --
      I don't read your sig. Why are you reading mine?
    104. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      You're just a troll so I shouldn't respond but someone else might be interested in a few facts from the real world:
      - California has had a budget surplus for a few years now and a growing economy so we seem to have figured out how to "pay for things".
      - California has a growing population and a growing economy and still manages to use less energy per capita and per unit of economic output that any other state.
      A few other facts from the real world (from EIA http://www.eia.gov/state/?sid=... )
      Excluding federal offshore areas, California ranked third in the nation in crude oil production in 2013, despite an overall decline in production rates since the mid-1980s.
      California also ranked third in the nation in refining capacity as of January 2014, with a combined capacity of almost 2 million barrels per calendar day from its 18 operable refineries.
      In 2012, California’s per capita energy consumption ranked 49th in the nation; the state's low use of energy was due in part to its mild climate and its energy efficiency programs.
      In 2013, California ranked fourth in the nation in conventional hydroelectric generation, second in net electricity generation from other renewable energy resources, and first as a producer of electricity from geothermal energy.
      In 2013, California ranked 15th in net electricity generation from nuclear power after one of its two nuclear plants was taken out of service in January 2012; as of June 2013, operations permanently ceased at that plant, the San Onofre Nuclear Generating Station.
      Average site electricity consumption in California homes is among the lowest in the nation (6.9 megawatthours per year), according to EIA's Residential Energy Consumption Survey.

      Thank you, California is doing just fine in the energy department (and also in paying for things).
      If you are looking for problems, you might look at Kansas or Wisconsin which are run by right wing idiots and are going bankrupt.

      --
      I don't read your sig. Why are you reading mine?
    105. Re:Space for solar hasn't been much of a concern by PlusFiveTroll · · Score: 1

      Yep, it's all possible if you want to pay more on your bill, the exact opposite that you would expect from going to solar.

    106. Re:Space for solar hasn't been much of a concern by PlusFiveTroll · · Score: 1

      Uh, yea, a whole lot.

      It doesn't become cloudy instantly everywhere at once in the middle of the day. Generally a front moves in and creeping line of cloudiness moves in to an area at 10-80km/hr Your solar production has a rather slow decrease in production. Even if you wake up in the morning and your entire grid is under clouds, you don't move off your baseline power, and you just ramp it up with normal demand curves.

      An eclipse is a 170 mile wide that moves 1,700km/hr. You get plunged in darkness very fast for a few minutes, output sags and other utilities try to ramp up, only to get the influx of solar minutes later when the shadow moves off. You put the system in to oscillations it wasn't designed for.

    107. Re:Space for solar hasn't been much of a concern by Teun · · Score: 1
      In the 80's I worked in Saudi Arabia and we already had a solution to this issue.

      With proper sizing that top tank will sufficiently cool off during the night, in the morning you start by switching off power to the water heaters, then take a shower the regular way.

      This way the heaters will be filled with cool water from the tower and at night when returned from work in the desert we'd take a shower with cold water from the heaters and warm water from the top tank.

      Now switch the heaters back on to prevent the freshly entered hot water from cooling down overnight.

      --
      "The likes of Facebook and WhatsApp are free to those whose privacy is of zero value."
    108. Re:Space for solar hasn't been much of a concern by Teun · · Score: 1
      South Africa doesn't need electrical water heaters, solar boilers on rooftops can supply all the hot water a family or hotel needs, have a look in places like Italy and Greece.

      But there's just this little thing you guys aren't allowed to import the necessary vacuum tubes needed for the solar heaters, the tax man vs. the environment!

      Or, see it as a business opportunity and start fabricating them in the country.

      --
      "The likes of Facebook and WhatsApp are free to those whose privacy is of zero value."
    109. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      No, you have not identified the obvious and trivial solution to a multi-billion-dollar problem that somehow all the person-millenia of engineering and scientific thought focused on the problem have somehow failed to see.

      What the staggering hell made you think this would, in fact, be the case? That the problem is that engineers don't know when the sun sets?

    110. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 1

      No, that's not the magic battery we need. The magic battery we need will power the car (or diesel 18 wheeler, locomotive, ship, etc) for its normal range when using petroleum fuel, and cost the same as a vehicle that uses petroleum fuel. There is no such animal at present.

      It doesn't need to power the car for the "average" needs of the "average" commuter, it needs to power the car for all the needs of all the current auto-buying public.

      My Subaru WRX is insanely fast, will go over 300 miles on a tank of gas, is "rechargeable" in about 5 minutes, and cost $29K. There is no such vehicle even possible today. It would probably even be competitive if it costs maybe 1.2X or 1.3X the cost of my WRX due to the cost saving of electricity compared to gas, but the closest thing we have is the Chevy Volt, it being the only almost-reasonably-priced car that could serve to take me to Tucson and back as I just drove last month in the WRX in the time it took me to get there. I refueled in 5 minutes or so, as can the Volt. The Volt is much more expensive and much less "quick" and therefore much less "fun." Doesn't fill my wants and needs. I almost bought one once anyway, but would have kept the WRX, and couldn't afford both the Volt and the WRX. Get back to me when there's a Volt version of a Jeep Cherokee... That would be a "maybe."

    111. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Did you look at the report? It happens over a three hour period more than doubling output and it is a problem.

      The existing fleet includes many long-start resources that need time to come on line before they can support upcoming ramps. Therefore, they must produce at some minimum power output levels in times when this electricity is not needed.

      So shutter the seventy year old plus coal plants and finally make one of those mythical clean coal ones instead. Or oil or the Nat gas industry quick spin up turbines. A shifty power company not upgrading the infrastructure shouldn't be my problem. Of course I live in Hawaii and have my own battery backup, because we already pay thirty cents a kwh. Add a few BBQ tanks of propane and I'm good off grid for months at a time.

    112. Re:Space for solar hasn't been much of a concern by sjames · · Score: 1

      Since I believe they can make that prediction, it informs me that it's a 'problem' they don't want to solve. In other words, a political talking point, not an engineering problem.

    113. Re:Space for solar hasn't been much of a concern by suutar · · Score: 1

      That makes sense. I hadn't considered the difference in speed of travel. Thanks!

    114. Re:Space for solar hasn't been much of a concern by sribe · · Score: 2

      The one renewable that load-follows really well is hydro. Solar and wind can be paired with dams on the grid, so long as the overnight rise in river level stays tolerable.

      That's somewhat geographically constrained, but where you have a reservoir available, with the capacity to adjust levels daily like that, it works really well. West of Denver, there's one facility where they pump the water up a substantial distance during off-peak hours, so that there's more stored energy to be released when needed. But that requires mountainous terrain.

      I knew guys who were working on a different system, basically a football-field-sized plastic air bladder anchored at the bottom of a reservoir. During off-peak hours pump air in, then when needed use the compressed air.

      Anyway, what's needed for larger-scale solar is definitely better storage. Residential-scale would be really nice, but next best would be systems scaled appropriately for distribution stations, basically neighborhood-sized. General locally, store locally, use locally.

      Give it 10 years ;-)

    115. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      The Tesla home battery will probably cost around $10K, and as the gigafactory ramps up production it'll go down to $6K range. This is not expensive as far as home infrastructure goes - it's similar to replacing a gas furnace or installing A/C and some ductwork. In the countryside, this will make solar+battery cheaper than pulling electricity to a newly built property. As far as size, going by the density of their car batteries, this thing will take up about as much space as a water heater. Weight is not a concern for stationary application.

    116. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      "It doesn't need to power the car for the "average" needs of the "average" commuter, it needs to power the car for all the needs of all the current auto-buying public.

      This is just wrong. You want one magic car that will have "the best" of everything (range, passenger capacity, cargo capacity, cost, speed, performance, etc.). Just as there is no "best" internal combustion car that will meet "all the needs of all the current auto-buying public", there is no "best" electric car. There are only cars that are "best" for specific uses.

      When looking at specifics of your WRX car, my Tesla has better performance (0-60 sub 5 seconds), less charge time (I never have to drive to a gas station and fill up... just plug it in at home), and lower cost (gas is expensive, electricity is cheap) than your Subaru. Plus, it's just a much nicer, safer car.

      --
      I don't read your sig. Why are you reading mine?
    117. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Nope. There are nowhere near enough appliances in anyone's home to strain the power output of an electric car battery. Stoves, dryers, water heaters only use a few kilowatts each. The weakest Tesla Model S outputs over 200kW at peak! Even a Nissan Leaf battery pack can put out 80kW peak, way more than the grid connection to your home (standard residential connections top out around 20kW).

    118. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 1

      Your Tesla. Remember when I said, "Cheap?" I meant cheap.

      I did not mean that one car had to serve all functions, but that all functions must be served by an array of electric cars similar to the array of gasoline and diesel powered cars that service it now. In other words, the condition needs to exist that no one can select a car or truck or 18 wheeler or boat or locomotive or aircraft, etc. powered by gasoline that cannot also be selected and powered by electricity for roughly the same price. There is no battery available to enable this condition.

      Did I say it right this time? I think you know what I meant.

    119. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      "Your Tesla. Remember when I said, "Cheap?" I meant cheap."

      Your Subaru is only cheap to buy. Not cheap to run or maintain. Not cheap when it comes to depreciation. My Tesla is less expensive than your Subaru when you consider TCO. Your cheap car is costing you a lot. (I bet you think those "free cell phone" plans are cheap, too.)

      True, you can't buy electric vehicles today which cover the entire range of boats or locomotives or aircraft or 18 wheelers... but I thought we were talking about cars and for cars, there are a lot of good options even at this early stage of electric car (and battery) development.

      --
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    120. Re:Space for solar hasn't been much of a concern by Duhavid · · Score: 1

      It is things like this that push my face into the "humans are rational" notion.

      Environmental arguments aside*, burning things of limited stock** and with other more practical uses to make electricity when we could make electricity from sunlight seems irrational.

      That economics ( expensive ) enters into it strikes me as saying that economics as practiced isn't tracking real value very well.

      What makes sense is to minimize burning things. So, doing that at night only/mostly strikes me as an improvement.

      * limited in supply, burning produces poisons that are released into the atmosphere, killing many each year, argued as contributing to climatic warming***
      ** not making a "peak oil" argument, but even if the entire earth was made of refined oil, it is limited in supply
      *** I personally believe it is adding to the temperature. if you honestly don't, well and good, there are many other strong arguments for not burning carbons.

      --
      emt 377 emt 4
    121. Re:Space for solar hasn't been much of a concern by MrL0G1C · · Score: 1

      http://www.solarcity.com/resid...

      Tesla aren't just going to make batteries for cars in their 'gigafactory' they are intending to make battery backup for residential solar as well.

      The way prices of solar panels, batteries and associated costs are dropping, solar+battery will be cheaper than grid before the end of the decade - no subsidies required.

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    122. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I suspect you underestimate the size required of that "small battery" to provide the power a household uses for a few days.

      I suspect you underestimate the size of backup generator that would be required for the same thing.

      Both would require a capital investment, both would take up space that may not exist in each home, and both create their own pollution in many ways.

      ---

      It is easy to type it on the Internet when you don't have to do it or deal with it, but it is a real problem and no one has an actual real world solution for it.

    123. Re:Space for solar hasn't been much of a concern by MrL0G1C · · Score: 1

      Solar + battery = fossil fuels not needed.
      Other renewables systems can also compliment solar or wind to provide backup instead of fossil fuels.

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    124. Re:Space for solar hasn't been much of a concern by david_thornley · · Score: 1

      The magic battery also has to be cheap and safe and cheap. Anything that holds that much energy is potentially harmful.

      --
      "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes
    125. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      We will do magic is breaking the laws of physics. This is an engineering/economic and cultural problem and not an intractable one as it has already been solved on an individual level, that is individuals figuring out how to make it work. What not present is a turnkey solution.

    126. Re:Space for solar hasn't been much of a concern by david_thornley · · Score: 1

      However, replacing some of the gasoline cars is a partial win, and we can use as many of those as we can get.

      --
      "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes
    127. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That was some interesting reading, I had not seen that before, so thank you...

      ---

      That being said, those solutions wouldn't work here, they require building new homes and we simply aren't going to replace all our houses. They also require space to work, basements and room underground (our homes are built on clay, we don't have basements, it would cost too much).

      HVAC also does more than just cool the air, it is called "air conditioning" for a reason, it also dehumidifies the air. It also works in sizes and spaces the above system would not.

      It is a good example of how someone sees an idea and says "oh, see, it could work, SOMEONE SOMEWHERE DID IT", without considering how you'd make it work for apartments, condos, townhomes, houses built near the ocean, houses build in the mountains, etc.

      And then there is cost... a small HVAC system is actually pretty cheap, what does the above system cost? Money is everything (even if you don't want it to be).

    128. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That isn't a bad idea, except for a few things...

      1. The upper windows in the great room don't open, and I couldn't reach them even if they did. I suppose I could replace them with opening windows run by remote control, but that would be expensive.

      2. When the temp is in the 80's, it is starting to get humid. One of the benefits of running the AC isn't just the reduction in temp of the air, it is the humidification of the air. 82 degrees and 10% humidity is not the same as 82 degrees and 35% humidity in terms of "feel".

      ----

      Frankly I think it is sad that our houses aren't "smart" and aren't "power" in the way our cars are. I think if homes had power windows more people would use them, but going around and opening and closing 16 windows downstairs and 12 windows upstairs. It isn't the "end of the world" to do it by hand, but in truth, it is easier to just leave the HVAC running.

      At the end of the day, the power bill is not high enough to motivate me to change that.

    129. Re:Space for solar hasn't been much of a concern by david_thornley · · Score: 1

      Seems likely. However, the cost of tearing it down and putting it together right would be rather high.

      My house was built in 1892, and it would be a shame to just tear it down and build a new one. It also isn't really well insulated, and has other problems being refitted like a modern house.

      --
      "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes
    130. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      You may well be right about that...

      But that just points out a problem, what is the solution? Telling me to move doesn't solve anything, someone else would just move here. Rebuilding or redesigning the house is too expensive, and we aren't going to tear down half of the houses in the country.

      The reality is that we have what we have in terms of homes, that isn't going to change within our lifetime. So now we have to figure out how to provide the power required to run these houses.

      I vote for nuclear, it is the only replacement for coal and natural gas that can provide base load for billions of people. The waste can be contained if we can get over our political issues, the waste from coal and natural gas cannot be contained, it goes into the air.

    131. Re:Space for solar hasn't been much of a concern by Copid · · Score: 1

      Seconded on the whole house fan. Unless you're in a place that stays hot and humid all night, a whole house fan is an incredible energy win. In fact, it's very likely to cool the house down faster than an AC system is.

      --
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    132. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That is a conversation that no one seems to be having, not here on Slashdot or anywhere else (in the US at least).

      Would I be open to changing the building codes going forward? Sure, that is a conversation worth having.

      But it doesn't do anything about the 100 million homes already built. We aren't going to tear them all down, so how do we deal with the situation as it exists?

      We need power, lots of power, and we need to do it cleanly and reasonably cheaply. Solar and wind cannot provide base load, they are nice supplements, but that's it. Can you imagine a system of solar and wind that DOES provide base load? Yes, you can. Between stored power, distributed power (across long distances even), and a "smart grid" with "smart homes", you probably could design a system from scratch that works with solar and wind only.

      But that isn't reality, it isn't what we have, and we aren't going to go there within our lifetimes. We just... aren't...

      So in terms of what we have, there are really three sources of power that can provide, in reality, base load for a billion people today in the world. Coal, natural gas, and nuclear.

      Which of those three would you prefer to have, if they are your only choices?

    133. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Those problems are trivially (albeit perhaps not inexpensively) solved by simply specifying a big enough battery.

      Making a battery larger doesn't always increase the amperage of the output. It can, depending on the design, but that gets very expensive. Batteries can store a lot of power, but how much peak output can they provide? 45 amps is a LOT of power for a battery for your home, yet that only runs three circuits and it doesn't run the HVAC. A 200 amp output battery would, but the size and cost would be crazy.

      Waving away the problem by saying "cost is the only concern" misses the point that "cost" is indeed a huge concern. And of course, size is an issue, many homes are smaller, where are you going to put these batteries for townhomes, condos, apartments, etc.?

    134. Re:Space for solar hasn't been much of a concern by MrL0G1C · · Score: 1

      I think someone needs to invent a method to store energy. Elon Musk is bright, perhaps he could make some of these energy storage things.

      http://www.greentechmedia.com/...

      Lithium battery prices are halving every 6 years, solar panels on average drop by 40% per annum!! The obvious conclusion is that solar+battery is going to wipe out everything else.

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    135. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I'm 99% certain you have poor insulation (compared to what anyone who was trying to run their AC off solar power would have), and that's your real problem.

      Besides, almost everywhere except the tropics gets cool enough at night that opening windows and running a whole house fan should be able to let people avoid running the AC at night. (And houses in warm areas like that should be designed so that windows can be opened at night, by (for example) having wide enough roof overhangs to keep rain out. If you live in Florida and your house is designed the same way as one in New England, you're Doing It Wrong.)

      Where I live, it is often still 90 degrees at night well past midnight in the summer. You simply have to run the AC to keep the house at a reasonable temp. If the house is being kept at 74 degrees and you open the windows and night and turn on a fan, the house will quickly raise in temp beyond a bearable point.

      This comes back to, "you're asking people to change their lifestyle", and frankly most people don't want to, they don't feel they need to, and they aren't going to.

      ---

      As for the "house in Flordia being the same as New England", people like their homes the way they are, solutions have been found in the form of HVAC, so the houses don't HAVE to be designed differently, we can simply heat and cool them as we want. Telling people they shouldn't do that doesn't actually help nor does it solve anything.

      Even if we started building houses differently tomorrow, it would make little difference within our lifetime. It will take over 100 years to replace a large number of homes with something "new", because we don't tear down and replace homes that often.

    136. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      By the time you've increased the efficiency of your house to the point that solar makes sense to begin with, the answer is "not all that big."

      I don't think you are really living in reality when it comes to what is cost effective to do to most homes in America to make them more energy efficient.

      I'm not going to spend $50,000 to properly insulate my home, and that is what it probably would cost to do it right. Can it be done? Sure, but that doesn't mean it is going to.

      ---

      Your ideas and suggestions are great examples of someone who is coming up with solutions to problems without having to pay for them.

      Can we do all these things? Yes, it is technically possible using the technology we have to do all that you are suggesting. I have no doubt about that. But it just isn't going to happen.

      Between the cost of solar panels, the cost of the battery, the cost of insulation, new windows, etc. I could easily spend over $100,000 to "solve" this problem you think I have. All to remove a $300 a month electric bill.

      That is just nuts and silly. It is a poor use of capital. That money would be much better spent building nuclear power plants and just running the systems we have.

    137. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Are those same flats in Italy, France, and North Africa also 3,800 sqft with 12 to 24 foot ceilings?

      Are they built on clay that prevents the construction of basements (for a reasonable price)?

      Are they heated and cooled to the mid 70 degree temp year round, from an outside temp that varies between below freezing to over 100 degrees?

      Are they priced per foot anywhere close to the price per foot of our homes?

      Do they have the amount of "things" that we have? We have 3 TVs, 5 computers, and a hundred other things plugged into outlets, they all suck power. Even if we turn off the HVAC tomorrow it wouldn't cut more than 50% of our energy use.

      ----

      It is very easy to make such statements, but they don't take into account all the various differences between locations, lifestyles, etc.

      Now the question becomes, "should we build the homes we do?". Probably not, but that ship has sailed and complaining about it isn't going to fix it.

    138. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If your AC has 8 tons of capacity, then your house is either gigantic or incredibly inefficient. Normal-sized houses have ACs closer to the 2-3 ton range.

      It is indeed "large" in terms of what the average person would consider "normal", but it is sized properly for the space.

      It is a 2 story house, the interior space is 24 feet tall with a total square footage of 3,800 and a ground surface area of 2,200 sqft (the upstairs is smaller than downstairs, a lot of it is open to below).

      Downstairs has a 5 ton unit, upstairs has a 3 ton unit.

      In your case, it's entirely appropriate that a battery to run your system would be huge and expensive compared to a normal house's!

      Yes, and that is the problem. You're trying to come up with a crazy expensive system to help me avoid a $300 a month electric bill. That is the target and that is the problem.

      $50,000 worth of solar panels and another $25,000 worth of batteries (both that ultimately do require maintenance), all to avoid $300 a month to the power company?

      Why? What problem of mine does this solve?

      You sound like somebody who buys a 10 MPG Ferrari and then complains he can't afford gas.

      I'm not complaining about the cost of gas, or power. My truck gets 12 mpg... do I care? Sure, sort of, not really... if I cared I would have bought something else... Would I *LIKE* it to get better millage? Sure, of course... but it doesn't influence my purchase decision. Having a large vehicle that does everything is simply more important to me than the cost of gas.

      Likewise, having a house kept at 74 degrees year round is simply more important to me than the power bill. Power prices could double tomorrow and it would not change my behavior. They could triple and I might think about it. But the changes wouldn't be huge, I'd probably replace all my lights with LEDs (most are currently CFLs), I'd probably replace a few of the south facing windows with something better, and probably toss some insulation in the attic.

      So I guess if you put out a carbon tax high enough to triple my power bill, I'd take some small measures to change, but you'd crush the average american's budget in the process. Which is why we aren't going to get a carbon tax and if we do, it will be too small to actually effect change.

    139. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If I want to die my hair pink I do (and have done) and if I want to paint my house pink - then fuck anybody else's opinion.

      I fully support your right to do that... in areas that don't have rules against it...

      I don't think EVERY house should be subject to such rules... I think SOME houses should be, and some should not.

      There is enough room in this world for me (and those like me) to have homes that all look the same, and for you you have homes that don't.

      I specifically picked this place to live because it has a HOA, because you can't do that, because I don't want to see it. You choose otherwise and I fully support your right to do that.

    140. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Now that sort of thinking pisses me off.

      What, that someone else has a different viewpoint than you do? :)

      Perhaps you should look inward to find out why you need to pass so much judgement over others.

      The rules for the homes here were known to all before anyone bought a house, and no one was forced to buy a house here. There are homes not THAT far away that do not have such rules, if you don't like them, go buy a house over there.

      I don't wish to take away your right to make neighborhoods without such rules, why would you wish to take away my right to make them with such rules?

    141. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      To me -it ADDS value to a neighbourhood when every house looks different and unique. Expressing something of the owner's personality. It gives the neighbourhood character.
      One of the most beautiful suburbs in Cape Town is Bo-kaap just outside CBD. Where EVERY house is a different bright colour. Pinks and blues and yellows and reds - and most houses are several of those.
      Has this harmed property values ? Hell no ! On the contrary, photographers go there to do photoshoots because it provides such awesome backdrops and landscape photography opportunities.

      In that case, the homes are all that way and thus it is "normal".

      If all the homes on my street were painted a different color, then yes, it would be fine.

      The problem becomes when it is a single home that does it. If you have 20 homes in a row that all more or less look the same, and 1 of them is painted pink, it stands out like a sore thumb.

      Either way is fine, but the middle ground doesn't really work. There is a real estate principle called "conformity", and it works the world over.

      The irony is that the homes in the neighborhood you describe ARE conforming... they are conforming to being unique and different from each other, which is a perfectly reasonable way to do it. But it isn't the only way.

    142. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      The HOA does much more than "tell us what to do".

      That is part of it, but the bulk of the money goes to maintenance of the community. We have a park and a pool that are funded by our HOA money (which honestly isn't that much, less than a thousand dollars a year). It provides for a green space, a playground for the kids, we get a nice pond with a fountain in it and a place for families to run and play that is just for our neighborhood.

      Can I paint my front door red? Yes, so long as it isn't too bright. Can I paint it brown, black, white? Yes. Can I paint it orange or pink or yellow? No, I can't. And I'm ok with that.

      I also can't put in a window AC unit, I can't put in an above ground poor, I can't park an RV in the street in front of my house, I can't hold yard sales every week in my front lawn, etc. And that's ok, because all that stuff is ugly.

      ---

      I choose to live here because of these reasons, not in spite of them. I understand that it isn't for everyone and that is fine, I fully support your right to live somewhere that doesn't have a HOA.

    143. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      Saying something pisses me off does not qualify as "wanting to take away your rights". That's just me saying why I choose NOT to live in neighbourhoods like that.
      I never said YOU couldn't, I just think it's stupid to want to.

      There is nothing oppressive about that opinion.

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      Unicode killed the ASCII-art *
    144. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >If you have 20 homes in a row that all more or less look the same, and 1 of them is painted pink, it stands out like a sore thumb.

      There are plenty of examples of that as well - and I always loved them. I would often slow down when I drive past a house that stands out like that to appreciate it.
      To me, that's beautiful. To me - I look at that and basically assume that's where the most interesting and probably the most intelligent person in the street lives.

      I respect him for having the balls to be different. Indiviualist self expression is a quality I admire above all.

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    145. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 1

      We're not talking about cars. We're talking about leaving the oil in the ground, and doing that requires that all of transportation be converted from petroleum fuel to electricity so it can run off the renewable fuels that can be used to make electricity.

      Again, TCO doesn't matter to a guy that is only qualified by his bank to buy a car under $20K. I can go higher, but I would be crazy to attempt to buy a $100K car. Payments on a $100K car? Even at 10 years, that's really a lot of money per month. Buy a car like that, and not have any money left over to go anywhere in it. And then there's insurance on a $100K car... I'm guessing the insurance companies probably REQUIRE LoJack.

      Yeah, I'd love to have a Tesla-like car myself, that would go 300 miles, and cost $30K. That would be what I need, that and being able to recharge it in 5 minutes ("Supercharger" - yeah, I'll pay the $65 or so for that - still cheap if I only have to do it on long trips) and I have even spent time drooling over a Tesla, but it ain't gonna happen at this address until those things are addressed. $30K / 5 minutes / refuel most anywhere. That's 50 years in the future, I think, if it happens at all. I'm 67 so I ain't never gonna see it.

    146. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >because I don't want to see it.

      See, that's what pisses me off. While I would never argue that you can't have that opinion, or that neighbourhoods which cater for it can't exist - the very idea that you so much as has an opinion about it annoys the hell out of me.
      I'm not taking away your right to that opinion - I'm merely excersing my right to tell you it's obnoxious.

      You do what you want with your house, your body and your life and STFU about what anybody else does unless it actually impacts on your rights.

      When my hair is one of it's more extravagant dye jobs most people compliment me, now and then I come across some judgemental asshole who makes a derogatory comment. Who makes it clear that he feels somehow personally offended by my lack of conformity. That he wished he never saw it, that he would prefer to have done something to avoid it.
      I have never had any qualms about telling those assholes where to get off.

      I take the exact same approach to my home. In a neighbourhood where those rules are stated upfront I couldn't actually act on a sudden urge to paint a dragon mural on my front wall without breaching a contract, so I choose never to live there -and I have nothing but scorn for those who do because people who make such choices tend to be controlling and judgemental of every OTHER choice anybody ever makes that isn't the exact same choice THEY would have made.

      People like that piss me off.

      Please note - I never campaigned to take anybody's rights away, I never suggested it shouldn't exist - all I said was it pisses me off so I choose to never buy there.
      The worst you could say is that my making that decision reduces the value of homes in such neighbourhoods - by a tiny amount perhaps but now multiply it by everybody who shares my love for the exotic and esoteric - and I actually think that neighbourhoods like that end up much more underpriced than they ever realized because of the large number of people who would never willingly buy there.
      How large that is varies of course, in Cape Town it's a very large percentage - part of why I moved here is the vibrant and large alternative subculture here, in the US you'll find something similar in places like Portland and San Francisco, in Dallas it's probably a tiny minority - so the reduction in value is probably offset by the gains from people who think like you do.

      But in the end that's the only possible impact my opinion has on you. I expressed my annoyance, that is all, I never tried to force you to share it.

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    147. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      And that is fine, but do the other 19 homeowners get a day?

      What could be more democratic than the 19 voting to tell the 20th that he can't paint it pink?

      At the end of the day, what he does effects everyone near him, so it is reasonable and fair to have such rules if the majority want them.

      You don't have to like it, but you should respect it.

      IHMO :)

    148. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      Actually almost all new properties in South Africa DOES have rooftop solar geysers. The numbers will probably go down a bit in the near future because until recently there was a major tax rebate for installing them but that law has just expired so the price will be somewhat higher.
      Older properties mostly have electrical geysers, my new house has one for example, but once that reaches end of life I'll definitely look at solar as possibility. In Cape Town in particular it should work very well - in Summer we have 10 hours or more of sunlight every day.

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    149. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >And that is fine, but do the other 19 homeowners get a day?

      No, and they shouldn't either. Where there are pre-existing contractual requirements as with HOA's people should respect what they signed, but other than that the only two words I have for them is: fuck you.
      It's not their home, it's not their business, look the other way if it bothers you.

      >What could be more democratic than the 19 voting to tell the 20th that he can't paint it pink?
      That's not democracy, that's tyranny of the majority.

      >At the end of the day, what he does effects everyone near him,
      No. It doesn't. Not even slightly. Seeing something does not count as "being affected" by it. It's none of their damn business.

      >so it is reasonable and fair to have such rules if the majority want them.
      No, it really isn't.

      >You don't have to like it, but you should respect it.
      Sorry but I will never do either - it goes fundamentally against everything I believe in. People should let other people do whatever the fuck they want unless it hurts somebody else. Nobody can be hurt by somebody else's sense of aesthetics ergo ALL senses of aesthetics should be respected, nobody should get to tell others how their property should look.
      In fact I would go so far as to argue that painting your house - especially if it's painted in a way that isn't "normal" is an act of free speech, constitutionally protected in every free country on earth.

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    150. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      You do what you want with your house, your body and your life and STFU about what anybody else does unless it actually impacts on your rights.

      Ahh, but there is where we disagree...

      I think what you do with your house DOES impact me, thus I get a say...

      Well, to be clear, what you do with your house that is near mine does... what you do with your house in South Africa? Not in the least...

    151. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Sorry but I will never do either - it goes fundamentally against everything I believe in. People should let other people do whatever the fuck they want unless it hurts somebody else.

      And you call yourself a liberal... and you claim to hate conservatives...

      The irony is so thick...

    152. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      part of the "or even two". System designs vary, as you say. I was trying to picture a kind of sliding scale. First the existing tank is upsized to better work with supply-based heating. After a point, you cease with that and go to two tanks, sometimes due to the shape of the space you have available, and sometimes because you're installing solar heating. Which is indeed 'normally' a small heating tank and a larger storage tank which you pre-heat with solar. Or wood, heat pump, etc...

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      I don't read AC A human right
    153. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      that's a great common sense idea

      except the city and state, in their ever-increasing hunger for More Money, have made it a real PITA for making covered parking areas if you didn't already have one. Way too many regs here in San Jose for any covered parking structure not attached to the home. Can't have one too close to the road, so if your driveway is short, you're SOL.All sorts of nasty little assessor "tricks" to make sure every dime is milked before allowing common sense solar deployment.

    154. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      Gasoline: = 33 kWh/gal. x 30% efficiency = 9.9 kWh/gal. At $2.50/gal, that's $0.25 per kWh for a typical gasoline automotive engine. Where I live, electricity is $0.16 per kWh. That's a 25/16 advantage for electric, not the >6/1 you're claiming.

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    155. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      Natural gas and propane used for home heating routinely exceed 95% efficiency.

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    156. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      Medium cloud coverage could reduce total irradiance down to 300 W/m2 and low-hanging clouds could bring it down to 230 W/m2. If it is really really overcast, you might end up with less than 150 W/m2 in the middle of the day.http://www.ftexploring.com/solar-energy/clouds-and-pollution.htm

      That's 15%, not 50%.

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    157. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      I live in New Hampshire. There are occasional nights when it's too hot to sleep comfortably without AC, even with lots of open windows and skylights. It's uncommon, but it happens.

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    158. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      You might be able to improve things by installing some canopies to shade your windows.

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    159. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      we also have very tall ceilings which don't help (our great room/family room has 24' ceilings with floor to ceiling windows.

      Impressive. Have you tried curtains?

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    160. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      Or we create a new power divide between people who subsist on trickle-charge vs those who have/can afford an increased energy supply.

    161. Re:Space for solar hasn't been much of a concern by ChrisMaple · · Score: 1

      Liberals are armed thieves. You consider that less a problem than not being able to paint your house pink?

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    162. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Making a battery larger doesn't always increase the amperage of the output. It can, depending on the design, but that gets very expensive.

      The average battery system for homes amounts to a very large UPS, and the main method to add more capacity is to add more batteries, which, if you're sizing everything correctly, translates to 'larger home battery' does indeed equate to more amperage capacity. Matter of fact, you're generally going to run into inverter limitations before lead-acid or LiIon batteries run out of amperage capacity. Keep in mind that you're looking at multiple lead-acid batteries, and 800 amps out of each isn't uncommon. 10 6V batteries, 800A each, = 48kV, or the equivalent of a 200A@240V service. If you're popping that, you are an outlier when it comes to home power usage.

      As for expense, yeah, that's kind of been my point from the beginning.

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      I don't read AC A human right
    163. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      people like their homes the way they are,

      Floor plans and features are one thing. We're talking about designing the home to be energy efficient about providing a conditioned living space.

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      I don't read AC A human right
    164. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      I'm not sure why people keep saying this...

      I'm not sure why you're ignoring my 'but' in there where I mention that expense is the overriding concern.

      And really, 'may or may not have enough' is really a question of expense. Do you or do you not have enough batteries? If you're running out of power at night, the obvious answer is 'no', and you 'need' to increase expense by installing more, and maybe another solar panel or two to charge them.

      What if the weather is bad for a few days? No power?

      Well, that depends on the 'expense' side, whether you still have a grid connection, access to cheap natural gas, etc...

      If you absolutely MUST have power at all times, exceeding that of even the power grid in many areas*, you have choices. Depending on things, if you're off the grid I'd start with a small NG generator that's programmed to come on when the battery reaches a critical level. Off hand, I'd say 10%.

      Alternatively, if retired Tesla batteries are really cheap, one of those should power the *average* home user for about 3 days, even at 50% capacity.

      We often run our AC at night, it gets quite warm and without it it would be nearly impossible to sleep. Are you suggesting we would have a big enough battery to run the AC for several days of no solar power?

      Well, you've already admitted that your house has poor thermal management. Fix that and you might not need the AC at night. Alternatives include a higher efficiency split-duct cooler specifically in the bedrooms, and even a system involving a thermal heat sink(big tank of cold water that's used to provide cooling at night rather than electricity).

      As something of an aside, my walls are about as well insulated as your roof.

      *My grandparents are out of power, on average, for about 3 days a year while the power company fixes power lines.

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      I don't read AC A human right
    165. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Our homes are not smart and not likely to become smart any time soon...

      The level of 'smart' I posited isn't actually very smart at all. It would consist of having your high-power, but not 'time of use' appliances like your water heater be on a relay. If the inverter starts approaching capacity, it shuts that relay off, cutting power to the water heater, leaving capacity to run the fridge/stove/etc...

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      I don't read AC A human right
    166. Re: Space for solar hasn't been much of a concern by Agripa · · Score: 1

      Solar is displacing fossil energy, so the remaining fossil plants run fewer hours and at lighter load, so there is less opportunity to recoup capital and finance costs.

      This goes double for nuclear power plants since they have no incremental fuel costs. One of the reasons utilities are forced to buy from renewable energy sources is to deliberately force nuclear power plants to operate at lower load capacity making them uneconomical.

    167. Re:Space for solar hasn't been much of a concern by Agripa · · Score: 1

      So we can just build more dams in all of the available locations and they will not get tied up in litigation like nuclear power. Oh, wait . . .

    168. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      I would really want to know where the 15000 TWh figure comes from, considering that it's 3x the US annual electricity consumption.

      Reading the article, it's basically what you'd get if you slathered solar panels basically 'everywhere' that's already developed. They even include 'brownfields' and such, industrial areas that are currently unused. Probably would involve covering parking lots with solar panels as well. If there's concrete there, you'd be putting a solar panel over it.

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      I don't read AC A human right
    169. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      Most electric cars today use about 250-300 Wh/mile. That works out to about 3 or 4 cents a mile. Gasoline at $4.00/gallon (not the current "run the competition out of business but this price won't last" price of $2.50) works out to about 20 cents a mile.

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    170. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Down in San Diego, solar covered parking is fairly common.

      While I'm up in Alaska, which is kind of an outlier for how well solar would work, my other main experience is down in Florida where much of my family lives, and I haven't really seen ANY there. Probably due to the electric companies being excessively hostile about it.

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      I don't read AC A human right
    171. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      There's another version. In Brazil nobody has a water heater. What they do have is a small heater attached directly to the shower-head that heats the water as it comes out of the tap.

      That's possible because you have a much smaller necessary delta - I need to heat my water 30 degrees before it even hits room temperature, much less 'hot'.

      Also, said system is even more 'on demand' than the traditional water tank. If you don't have the electricity to spare for the heating when you want to take a shower, you're going to be taking a colder than normal shower.

      Part of 'lots of solar power' would probably be putting more solar water heating solutions in, and those generally require a larger tank to store the energy and provide 'evenness'. Especially if you're using it to heat the house...

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      I don't read AC A human right
    172. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      As ChrisMaple said, NG used for home heating can exceed 95% efficiency. Same with water. Guess where the majority of natural gas use goes towards?

      If the burners on your stove weren't 'very' efficient you'd have issues with breathing.

      Still, I rounded down to 90% for a reason.

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      I don't read AC A human right
    173. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      I live in Georgia; I'm well aware of the fact that desert architecture doesn't work in hot-humid climates like (eastern) Texas.

      However, the fact that your house was built stupidly doesn't mean that we should throw up our hands and ignore the problem. There are new houses being built every day, and those should be designed smarter (and in the our case I don't mean with qanats; I mean things like verandas, lots of attic ventilation, and choosing not to cut down the surrounding trees). In the South you may not actually be able to eliminate AC entirely, but you can get pretty close.

      By the way: clay soil is not why houses in your area don't have basements. I'm guessing you're on the coastal plain, with a high water table and without hills, and that's why. In the Piedmont, where I live, we have clay soil and basements.

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      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    174. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      Unlike the GP (who appears to live in some kind of horrible McMansion), your 100+ year old house was designed. In fact, it's perfectly livable without air conditioning at all, proven by the fact that people actually lived in it for decades before air conditioning existed! You just need to go re-learn how to operate it properly.

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      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    175. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Conventionally produced power is now sold day and night. The fixed costs of maintenance and constructions costs are amortized over the amount of electricity produced. If solar takes over much of the day time production then the overall production from conventional sources could be cut in half. They will have the same maintenance and capitol costs amortized of half the production therefore the fixed costs per KWhr produced will be doubled and the cost of night electricity will go up.

    176. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      And really, 'may or may not have enough' is really a question of expense. Do you or do you not have enough batteries? If you're running out of power at night, the obvious answer is 'no', and you 'need' to increase expense by installing more, and maybe another solar panel or two to charge them.

      My main question becomes, why should I bother? I already have power... it is dependable and works all the time and it is, all things considered, cheap...

      "What problem are you trying to solve?"

      I looked at last month's bill:

      I paid $189.23 for electric charges. That is the total amount including the city sales tax, muni franchise fee, etc.

      I used 1766 KWh worth of power. My cost per KWh including all charges on the bill is 10.7 cents.

      That is an annual rate (it isn't summer yet so the true number is higher) of 21,192 KWH worth of power, for an annual bill of just over $2,200 (if it holds even at that number).

      No amount of savings from batteries and solar panels makes any kind of sense.

    177. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      But that just points out a problem, what is the solution? Telling me to move doesn't solve anything, someone else would just move here. Rebuilding or redesigning the house is too expensive, and we aren't going to tear down half of the houses in the country.

      The reality is that we have what we have in terms of homes, that isn't going to change within our lifetime. So now we have to figure out how to provide the power required to run these houses.

      Many houses are not as pathologically bad as yours. In fact, horrible McMansions have only been built for the last 20 years or so; houses built earlier (ranches and split-levels) are less horrible, and houses built before 1950 or so (craftsman bungalows and Victorians) are actually pretty decent. They had to be, since AC didn't exist yet!

      For example, my house in Atlanta is a single-story home built in 1948 (in a transitional post-WWII style halfway between a bungalow and a ranch) and I plan on keeping my HVAC system completely turned off between now and about halfway through June. The technique is to open the windows whenever the temperature is between 60 and 80 (or 65 and 75 for a pickier person), close them otherwise, and rely on the insulation and thermal mass to to maintain the temperature gradient between open-window, er, "windows." If I had a whole-house fan and deep overhangs / awnings, I'd be able to do better.

      We also don't have to keep building houses stupidly; if we switch to energy-efficient designs now, energy pigs like your house will be a diminishing fraction of the total housing stock.

      I vote for nuclear, it is the only replacement for coal and natural gas that can provide base load for billions of people. The waste can be contained if we can get over our political issues, the waste from coal and natural gas cannot be contained, it goes into the air.

      This isn't a "vote!" There's no such thing as picking some kind of silver-bullet absolute winner and ignoring everything else; the choices are not mutually exclusive. The correct solution is to use whatever technology is most appropriate for a given situation. Solar and nuclear (etc.) can coexist perfectly well.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    178. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      The grid already has enough pumped storages or it would not work at all: right now.

      That is a completely unsupported claim. The US had ten pumped storage installations generating less than 20GW of power. In 2014 the US produced 4,092,935GWhrs. That is an average of 467GW. That means that if all pumped storage was working at capacity it would contribute 4% to the total generated.

      Read the report before you comment. Most of your solutions dont work and you are ignoring many issues brought up in the report.

    179. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Well, that depends on the 'expense' side, whether you still have a grid connection, access to cheap natural gas, etc...

      If you absolutely MUST have power at all times, exceeding that of even the power grid in many areas*, you have choices. Depending on things, if you're off the grid I'd start with a small NG generator that's programmed to come on when the battery reaches a critical level. Off hand, I'd say 10%.

      Why would I give up the grid connection?

      It just kinda feels like a lot of people want to solve a problem that we don't have. If the problem is the coal fired power plants, then replace them with nuclear and call it a day. Solar is a mess to try and use it for anything other than daytime supplemental power and even then, it really only makes sense when installed at utility scale, the home installs don't make sense (unless massively subsidized by various rebates and incentives and tax credits).

    180. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      *My grandparents are out of power, on average, for about 3 days a year while the power company fixes power lines.

      Yuck, that is terrible...

      *knock on wood*, our power never goes out. I think in 9 years of living here, it has been out once, for maybe 4 hours...

    181. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Putting aside that our water heater runs on natural gas and thus wouldn't make much difference in terms of power draw... (it does need power, but not much)

      Many things don't like having their power just cut off, it isn't good for things that expect to be supplied with power 24/7.

      A refrigerator is a good example, it isn't "smart" in that it doesn't know to bring the temp down a few degrees before a load of dishes is going to be washed since it won't have power for an hour. If the power is cut in the middle of running, it can mess up the settings on the front and inside.

      Most appliances are simply not met to be cut off from power.

    182. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      The upper windows in the great room don't open

      Of course they don't, because that would make too much damn sense!

      (I figured as much; I just wanted to see you admit it for pure schadenfreude. I bet your air handler and ductwork is in your attic, too. Like I said, pathologically bad...)

      When the temp is in the 80's, it is starting to get humid. One of the benefits of running the AC isn't just the reduction in temp of the air, it is the humidification of the air. 82 degrees and 10% humidity is not the same as 82 degrees and 35% humidity in terms of "feel".

      Setting up stack-effect cooling with a dehumidifier on the cool-air input end would still be much more efficient than AC.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    183. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      You might be able to improve things by installing some canopies to shade your windows.

      Yes, if that didn't change the appearance of the house... My HOA would never allow that...

      ---

      I'm not trying to be difficult, even if that sounds like it...

      The thing is, so many ideas sound great until they hit the reality of the road...

      We have the system in place that we have for a reason, it won't change easily, quickly, or cheaply, no matter the reason (even global warming).

      Frankly I think the smart path to take is to work on how the power company makes power. Get them to do it, it makes far more sense to adjust at that level than to try and install solar on hours one at a time.

    184. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      By the way: clay soil is not why houses in your area don't have basements. I'm guessing you're on the coastal plain, with a high water table and without hills, and that's why. In the Piedmont, where I live, we have clay soil and basements.

      Actually it is...

      I live in Dallas, we're 650 feet above sea level... Houses in central Dallas often are pier and beam, they have crawl spaces under the house, but not true basements.

      I live north of there in Plano, our soil is a nasty thick clay that takes heavy equipment to dig into. Even digging a pool is a PITA and expensive because of that.

      I do someone who said "screw it, I want a basement, I don't care" and did it anyway. It was over $100,000 to add it into his new home he built.

    185. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      Your ideas and suggestions are great examples of someone who is coming up with solutions to problems without having to pay for them.

      Can we do all these things? Yes, it is technically possible using the technology we have to do all that you are suggesting. I have no doubt about that. But it just isn't going to happen.

      Between the cost of solar panels, the cost of the battery, the cost of insulation, new windows, etc. I could easily spend over $100,000 to "solve" this problem you think I have. All to remove a $300 a month electric bill.

      That is just nuts and silly. It is a poor use of capital. That money would be much better spent building nuclear power plants and just running the systems we have.

      Here's the problem: your entire outlook is based on the presumption that everybody's house is as ridiculously wasteful as yours. This is not the case. You are an outlier. And just because you can't manage a transition to solar, that doesn't mean it isn't a good solution for just about everybody else. You dun goofed; sucks to be you.

      Now, quit trying to screw it up for everybody else with your naysaying!

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    186. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Where electricity is always priced at market equilibrium, all electricity is consumed and therefore "needed" by some definition of the word.

      That is completely untrue. There are not people waiting around for prices to go down to use electricity.

      people consume more electricity at that time because it's cheap (perhaps to cook dinner or do laundry)

      Most people cook when they need to and do laundry when they have time. The price of electricity has nothing to do with it.

      The report hinted at this solution: "The resource mix would also benefit from...demand side response capabilities to help meet real-time system conditions."

      Good selective quoting. You missed the " energy storage capabilities and" which I am talking about. Demand side response is only part of the solution storage is another.

    187. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Many houses are not as pathologically bad as yours.

      I think you're overestimating how much power I used is from the AC.

      Last month's bill, we didn't use the AC at all and we still used 1766 KWh of power. That will double in the summer time, but annually AC is at most 1/3 of my total power use.

      Making the house more insulated won't change the total number by as much as you think it will.

    188. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Usefulness above profit.

      Paid for by whom? Profit goes into new technology and new capacity.

    189. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      This isn't a "vote!" There's no such thing as picking some kind of silver-bullet absolute winner and ignoring everything else; the choices are not mutually exclusive. The correct solution is to use whatever technology is most appropriate for a given situation. Solar and nuclear (etc.) can coexist perfectly well.

      There sure seem to be a lot people thinking that solar and wind can fix everything...

      They will help and I have nothing against them, but I also live in reality and understand that they will not provide a replacement for coal anytime soon...

      ---

      The issue is, why are we trying to replace coal? Is it because of CO2 emissions? If so, then we need to do that sooner rather than later. Solar and wind can't do that.

      Only nuclear can, but we have so many people who gasp, "oh my god, the nuclears!" and run in fear.

      So we have coal...

      http://www.treehugger.com/clim...

      That is from a site called TREEHUGGER! Clearly a biased source and even they talk about the growth in coal power. (complain more accurately, but same thing)

      ---

      Now coal is having a hard time in the US, partly due to the EPA and partly due to the price of natural gas.

      But at the end of the day, what is going to keep the lights on at night?

      Coal, natural gas, or nuclear will...

    190. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Here's the problem: your entire outlook is based on the presumption that everybody's house is as ridiculously wasteful as yours. This is not the case. You are an outlier.

      The irony is that you have it backwards...

      If solar doesn't work for me, then it SURE doesn't work for people who use LESS power.

      Lets take your typical home of 2,000 sq/ft that uses a more modest amount of power, say 1/3 of what I use.

      Their average monthly bill is about $100 a month and it'll cost about $30,000 worth of solar panels and batteries to remove it.

      That is an equally stupid use of capital.

      I'm not against solar, I'm against wasting money on things that don't return an investment on the capital spent to make them happen.

    191. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      So I guess if you put out a carbon tax high enough to triple my power bill, I'd take some small measures to change, but you'd crush the average american's budget in the process.

      Bull. The "average American" uses way less carbon than you do. The median home size in the US (note: not the median new home size; the medium size of all homes that currently exist, including old ones) is certainly less than 2000 sq. ft., and (counting apartments) is probably closer to 1500. Tripling the average American's power bill would raise it from $100 to $300, not make it skyrocket from $300 to $900 like yours would.

      Which is why we aren't going to get a carbon tax and if we do, it will be too small to actually effect change.

      No, we aren't going to get a carbon tax because there are too many people with your kind of wasteful attitude in office.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    192. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Setting up stack-effect cooling with a dehumidifier on the cool-air input end would still be much more efficient than AC.

      It might be, but that costs more money, what I have is paid for... and what I have is what I'd have to have anyway for when it is 104 degrees out...

      This is not a serious issue to most people. It is a mild background concern to most people, but it sure isn't in their top 5 issues to care about.

      You're asking most people to go out and spend real money, and in some cases a lot of it, to solve a problem they don't think they have.

      This is why I am saying that most people here are kidding themselves and not living in reality. Solutions have to be ones that will actually happen, not just be technically possible, but be ones that people will spend money on.

      ---

      It is also worth noting that you keep thinking that insulation and AC are my primary electric uses, they are not. Perhaps 1/3 of my annual bill is AC, the rest is everything else. So if I turned my AC off tomorrow it would only save me about $100 a month on average.

      The lights, computers, and everything else suck up a lot of power.

    193. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      Hmm... I don't get it then. Here in Georgia we're famous for our impenetrable red clay, but somehow we manage to dig basements (at reasonable cost) anyway.

      Maybe y'all just suck. ; )

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    194. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Neither do I, since I've lived here most of my life...

      But I can tell you that if you dig more than about 6 inches down you run into clay that requires power equipment to move, you'd be wasting your time with a shovel.

      Just to dig a hole for a pool runs between $10K and $20K, and that is much smaller than a proper basement would be.

    195. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      Lets take your typical home of 2,000 sq/ft that uses a more modest amount of power, say 1/3 of what I use.

      Their average monthly bill is about $100 a month and it'll cost about $30,000 worth of solar panels and batteries to remove it.

      I live in a home very close to average (a little smaller in square footage, with insulation that met code about 20 years ago)

      I've averaged 740 KWh per month of electricity over the last 12 months, and my average power bill was $105.79. This calculator suggests that I'd need about 5500 watts of capacity to replace 100% of my usage, which would cost less than $10,000 for most of the choices on that page (plus installation). Even if installation doubled the price to $20K, your estimate is still 50% too high.

      And that, by the way, is ignoring (a) tax credits (and Georgia's state tax credit is quite good), (b) the fact that I'd insulate some more before buying a solar system, reducing the capacity needed further, (c) the fact that I'd probably DIY most of it, and (d) the fact that electricity prices keep going up over time. Considering those factors, I'd probably spend $7000 or less and break even within 6 years.

      In fact, pretty much the only reason I don't already have a solar system is that my roof will need to be replaced relatively soon, and I don't want to have to remove and reinstall the panels when that happens. Actually, looking this stuff up now makes me want to go ahead and replace the roof this year, rather than continuing to wait...

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    196. Re:Space for solar hasn't been much of a concern by mrchaotica · · Score: 1

      Do you have hills? We don't try to dig out basement on flat lots; we dig basements into the side of a hill (such that at least one side is a walk-out).

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    197. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Nope, not at all...

      The elevation doesn't vary more than 100 feet across a hundred miles in any direction.

      It is very, very flat.

    198. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I've averaged 740 KWh per month of electricity over the last 12 months, and my average power bill was $105.79. This calculator suggests that I'd need about 5500 watts of capacity to replace 100% of my usage, which would cost less than $10,000 for most of the choices on that page (plus installation). Even if installation doubled the price to $20K, your estimate is still 50% too high.

      The cost of the panels isn't the issue, it is the cost of installation. There is more to installing panels than bolting them to the roof.

      http://www.solarizeplano.org/

      That is a group of pro-solar people right here in my home town.

      https://docs.google.com/docume...

      That is their "FAQ" about what it takes to get solar on the roof.

      "âoeHow much does it cost?â
      The cost of installing a solar PV depends on the size of your house. The average residential system is 5 kW and the average price per watt is about $3.50. (This is based on data for Texas residential sized systems from Figure 16 of this report - Tracking the Sun VII: An Historical Summary of the Installed Price of Photovoltaics in the United States from 1998-2013.) Therefore, an average 5 kW system would cost $17,500 before any incentives are applied."

      ---

      So you'd spend $17,500 to remove a $100 a month electric bill? That is not a good deal.

      And that, by the way, is ignoring (a) tax credits (and Georgia's state tax credit is quite good)

      Sure, you can get that deal, but everyone can't. If there was a real push to install solar on a wide basis those tax credits would vanish very quickly. To figure out if solar makes sense as a wide scale replacement for coal and natural gas, you have to look at the actual cost, not the "cost to you".

      As a side note, you're pay 14.2 cents per KWh, that strikes me as expensive. If you paid my rate of 10.7 cents, your bill would be $79.18, which makes the above $17,500 even worse.

    199. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      My main question becomes, why should I bother? I already have power... it is dependable and works all the time and it is, all things considered, cheap...

      If you've paid attention, I've been basically suggesting fixing up your house's insulation situation before installing solar panels.

      ~22k kWh/year? You said earlier that your house has a 2200 sqft footprint.

      So if we figure that we have about 1200 sqft to play with(remember roof tilt!), and each panel is 5.5x3.25, or 18 square feet(I'm rounding up). We're looking at 66.7 panels worth of space, but I'll round down to 60.

      60 240W panels = 14.4 kw. Plugging the data in to PVWatts for Texas and leaving everything else as default., I get 21k kWh of electricity a year.

      56 300W panels = 16.8 kw, raises the electricity generated to 25k kWh. Might not cover you, but then again, might come close with the roof insulation effect(IE the solar panels keep your roof cooler, reducing HVAC use).

      So while it sounds like you'd still be buying electricity from the power company with a roof 'completely' filled with PV panels, it'd come pretty close. It's almost certain that if you undertook some additional energy saving measures such as replacing your windows or insulating your walls* that your power needs would drop to the point that, yes, you could reach net zero without having to fill your south-facing roof completely with solar panels.

      Why would I give up the grid connection?

      Never said you should. I was saying 'depending on the situation', IE I was trying to list out various concerns for meeting electric power needs with a solar + battery system, under which a grid connection is indeed no longer assured, seeing as how it can be a $20-40/month charge even if you're not pulling or putting power on it. I wasn't actually trying to single your situation out right then.

      No amount of savings from batteries and solar panels makes any kind of sense.

      Actually, it'd make perfect sense if somebody gave you the system for 'free', like I said in the very beginning, the problem with solar isn't space, it's cost.

      Anyways, with the 300 watt panels, it looks like $23k before incentives(which normally cuts the price in half) for a 15.6kW system. It'd displace 23k kWh/year, or $2,480 worth of electricity**

      Or about a 13 year payback @5%

      *One of my homes had extra insulation added by punching a small hole near the top of the wall, then spraying in insulation through the hole. The opening was then capped off.
      **Variation is probably on how we're rounding things.

      --
      I don't read AC A human right
    200. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >And you call yourself a liberal... and you claim to hate conservatives...

      It's not democrats in the USA who keep passing laws trying to discriminate against gays. It wasn't democrats who recently passed those insane anti-transgender bathroom laws...
      Telling people how to live is the 90% of the conservative playbook - the other 10% is pretending (and even believing) that doing so is "freedom".

      --
      Unicode killed the ASCII-art *
    201. Re:Space for solar hasn't been much of a concern by silentcoder · · Score: 1

      >Liberals are armed thieves. You consider that less a problem than not being able to paint your house pink?

      Yeah, I don't fear made-up bogeymen. I pay my taxes without complaint and I support the idea of a social safety nett. There can be no freedom without equality. If some of us are starving, none of us are free.

      --
      Unicode killed the ASCII-art *
    202. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If you've paid attention, I've been basically suggesting fixing up your house's insulation situation before installing solar panels.

      Fair enough... I should do that at some point, but it is on "the list". :)

      Blowing more wool into the attic isn't hugely expensive, it will get done at some point. The windows cost more to replace than they will save, sad to say.

      ~22k kWh/year? You said earlier that your house has a 2200 sqft footprint.

      So if we figure that we have about 1200 sqft to play with(remember roof tilt!), and each panel is 5.5x3.25, or 18 square feet(I'm rounding up). We're looking at 66.7 panels worth of space, but I'll round down to 60.

      It is actually just over 25K KWh a year, summer bumps up the average, 22k is based off last month's bill.

      Replacing the HVAC did more to save me on power than anything else I could do, and I had to since the compressor failed on the old unit and repairing it would have been several thousand dollars.

      60 240W panels = 14.4 kw. Plugging the data in to PVWatts for Texas and leaving everything else as default., I get 21k kWh of electricity a year.

      I wish, but my roof is an odd series of angles, I can get about 8kw up there, it has been measured by a solar power installation company, that is all that is going to fit. A bunch of it is unusable due to shape.

      So while it sounds like you'd still be buying electricity from the power company with a roof 'completely' filled with PV panels, it'd come pretty close. It's almost certain that if you undertook some additional energy saving measures such as replacing your windows or insulating your walls* that your power needs would drop to the point that, yes, you could reach net zero without having to fill your south-facing roof completely with solar panels.

      Lets pretend for a minute that I could do that, lets say it would fit.

      To install 14.4 kw worth of panels would cost about $50,000 in out of pocket cost. Take 30% off for the federal tax credit leaving me with a net cost of $35,000. I get cheap power so I don't get utility rebates for installing it, so the 30% is it.

      That system would save me about $200 a month on my power bill. Out of my $300 a month I pay on average, about $220 of it goes for electricity, the other $80 goes to natural gas.

      Do you think spending $35,000 up front to save $200 a month makes sense? Ok, lets say I don't spend it up front, lets say I get a 15 year mortgage to pay for it. That would cost about $268 a month for 15 years. Now granted it does add something of value to the house. Not as much as the solar sellers would suggest of course, but it adds something.

      But then in 10 years the inverter needs to be replaced, and I'll have to keep them clean, and worry about them, and make sure they are insured...

      All to do what? This doesn't solve a problem.

      Let me put this another way... Plano, TX, a city with about 270,000 people.... As of the end of 2014, do you know how many homes here have solar on the roof? Want to take a guess?

      175

      http://www.solarizeplano.org/p...

      Plano, TX is one of the wealthiest cities west of the Mississippi, we can afford to install solar, I can write a check for it tomorrow. Why don't I? Because it is a stupid investment and a poor use of capital.

      http://en.wikipedia.org/wiki/P...

      I would LOVE for solar to make more sense, it is free power from the sun. But it costs too much to install and takes too long to pay for itself.

      I'm not against solar, I'm against wasting money.

    203. Re:Space for solar hasn't been much of a concern by Aereus · · Score: 1

      Build infrastructure-class carbon scrubbers to sequester CO2 with the excess power during the day then? :)

    204. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      $50k for 14kW? Either you haven't checked in a while or the installers in your area are rip-off artists.

      --
      I don't read AC A human right
    205. Re:Space for solar hasn't been much of a concern by Ichijo · · Score: 1

      There are not people waiting around for prices to go down to use electricity.

      Yes, there are.

      --
      Any sufficiently unpopular but cohesive argument is indistinguishable from trolling.
    206. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      "Right there is one of my strongest objections to environmentalism"

      Right there is the problem with the USA."HOW DARE YOU CRITICISE ME!!!!". Special snowflakes that think that they have the right to waste money,energy, food, time and leave a shitload of crap behind them because they can't be bothered to be sensible about things if it means any inconvenience or self-reflective thinking.

      You're using FIVE TIMES what the UK is using, and they're colder, wetter, and among the worst in the EU for economy in power use. Yet if this is pointed out to be insanely profligate (not to mention an expensive waste), you find that objectionable! Why? Because it doesn't reflect well on you and criticizes you, despite being from Gawd's Awn Cuntry!

      The UK aren't living a hairshirt existence, not living in the dark ages, unable to heat food or light their homes. Their living standards are as good as your country, but uses a fifth of what you use. And pointing out this means you're wasting the vast majority of the power is, to you, ****objectionable****?????

      That right there is the problem with the USA. And the anti-environmental morons who are not limited to the USA but believe God gives them the right to do as they do when they're from the USA.

    207. Re:Space for solar hasn't been much of a concern by stdarg · · Score: 1

      Bull. The "average American" uses way less carbon than you do.

      Reducing our carbon emissions can be done without everybody installing their own personal solar power plus battery system. Centralized nuclear power for instance. Then it doesn't matter how big your AC unit is in terms of carbon emissions.

      No, we aren't going to get a carbon tax because there are too many people with your kind of wasteful attitude in office.

      I live in a 1300 sq ft house and my electric bill is like $80/month, which is below the median for my area. I don't consider myself wasteful with energy. When the roof on this house needs replacing in (guessing) 10-15 years, I'm willing to pay quite a bit extra to get solar shingles or whatever equivalent is available then. I don't really care about ROI.

      But when people start talking about new laws and taxes to "encourage" others to see it their way, I think you can just fuck right off. I don't support that at all. Some tiny reduction in carbon emissions among my countrymen (while developing countries continue to get exemptions that more than offset our reductions) isn't worth the introduction of new levers on the free market that the government can tweak whenever it wants.

    208. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      It is a worthy goal to leave all of the oil in the ground but the reality is that it will take many years to develop alternatives to oil for all modes of transportation. However, cars use most of the oil now and there are good electric options for cars even at this early stage of the electric car industry so everyone should look at the options and it is best to consider TCO calculations.
      Pure electric cars such as the Tesla are very simple mechanically and require virtually no maintenance and should run for a long time with the only expense being tires. The batteries have been shown to last for more than 500,000 miles in testing.
      When you have a car with very low maintenance cost and very low fuel cost the TCO becomes quite favorable for cars even with a high initial cost. The all aluminum body and electric motor of the Tesla should easily last 30 or 40 years and over 500,000 miles with only minimal maintenance and fuel cost. Think of it like a solar panel where you pay the upfront cost and get free electricity for 25 years.
      The issue of "5 minute recharge" is really a straw man. Most EV owners have sufficient range for daily driving and plug in at home or work so in effect have a recharge wait time of zero. They don't have to drive to the gas station... ever. It's only on the rare occasion of a long trip (more than a few hundred miles) where you have to wait to recharge on the road. In this case, since you've just driven for 4 or 6 hours, it might be a good opportunity to stop for a meal and rest your body and recharge.
      Electricity infrastructure is ubiquitous. Many more electric outlets than gas stations in the world. Besides charging at home, I have about 15 places within a few miles which offer free electricity for EVs so I can conveniently drive for "free" anywhere.

      --
      I don't read your sig. Why are you reading mine?
    209. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      That would be a battery pack that would pick up the energy demands at night.

    210. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 1

      Hey, I love the Tesla and really want one, but $100K is $100K, and it ain't happenin' 'til the $100K is maybe $30K. That would be the "magic battery" at work.

      And I do a lot of those long distance drives. I have a destination in Arizona that I frequent. I live in Virginia. I was there last month. It's about 2600 miles when you go down I-95 and hang a right at Jacksonville, then take I-10 the rest of the way. Its really weird to look at your Garmin GPS and the "next turn" is 1600 miles away at an exit onto Valencia in Tucson. But anyway, it took a leisurely 4 days to do that with about 2 - 3 fillups per day. They were about 5 minutes each. It would have taken probably an extra day to let the car sit there and charge 100% each time.

      Quick recharge is the same mechanism at work as is hauling stuff. Lots of people have pickup trucks that get terrible mileage but that they drive to work and everywhere else because they sometimes have to haul stuff - boats, 4X8 sheets of plywood, etc. They don't have the money to buy 2 vehicles, something that gets great mileage but won't haul much more than a briefcase, and then something that will tow the boat. So, they buy something that will tow the boat, and drive it everywhere 'cuz its their only vehicle. I'd have to keep my Subaru WRX for the Arizona (and other places I go for the same reason as Arizona, and they're all over the US - its 3 years old, has 116,000 miles on it) trip and just drive the Tesla when I could afford to wait for a charge - or if there was a supercharger available.

      And I think we'd have to convert _all_ the transportation to electricity, including the 18 wheelers and the locomotives, because once cars and light trucks went away, the economy of scale of making gasoline and diesel would go away, they'd sell probably a small fraction of the amount they do now, so the price per gallon, to pay for all the hideously expensive activities associated with refining and transportation of it would force the price per gallon of the remaining gasoline and diesel to skyrocket. $20 / gallon? Maybe. Then you need to electrify jet air travel (how? I don't think there's a solution for that), boats, trains, 18-wheelers, etc.

      Oh, I think the electricity for transport from the grid is going to take a lot of buildout of the grid. I have a scenario that I calculated once and saved, see if I can find it:

      I found it, but Slashdot won't let me copy it in here - it says "filter error - please use fewer "junk" characters. Dunno what they're talking about, unless it is the carets I was using for powers of 10 that I was representing. Anyway, it'd take about 2.8 trillion dollars to build 164,000 wind turbines to power all of transportation that, or about $507 billion to do that in nuclear plants in order to provide electric with no pollution. Nukes and wind give us zero pollution. Didn't try solar since it only produces on some of the days and only in daylight. Really expensive, and that didn't even try to estimate building out the grid for electrics. If you're a photographer and attempt to photograph virtually any landscape, even in the near-wilderness, there's going to be a power wire running thru your picture. I contended with this while shooting the Apache Trail just east of Phoenix last month. Wires everywhere, but it'd get markedly worse to make transportation go on electricity. I'm still for doing that, but there will be costs in both dollars and esthetics.

    211. Re:Space for solar hasn't been much of a concern by mspohr · · Score: 1

      Tesla is developing a smaller EV that they say will sell for about $35,000 in a few years. That may work for you.
      Meanwhile, you seem to be making the argument that because we can't convert everything to electric right now (because of the grid, 18 wheelers, etc.) that we shouldn't try... at all. I hope that is not your thinking.
      BTW, there's a Supercharger route from Virginia to Arizona.

      --
      I don't read your sig. Why are you reading mine?
    212. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If anyone in the DFW area knows of a solar installer who does it for less than about $3.50 per watt, I'm all ears.

      Seriously, price is the only reason I wouldn't do it, otherwise I'm totally onboard for solar, but even the local solar association says it costs about $3.50 per watt and the two installers I've spoken to were in that price range.

    213. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      If the sun isn't shining for several days, how hot could it be?

    214. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      Rofl, it is HEATING, we are talking about creating electricity. Or did I misread somehow?

      And even in such heating situations it is unlikely you are above 75% ... hard to measure anyway.

      If you had 95% you would heat X minutes until you have the temperature you want and then "switch the heating of" ... basically impossible to measure efficiency in a meaningful way if you lack the insulation.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    215. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      I don't really know why americans assume people in Italy, France or north Africa have fewer PCs, fewer TVs etc. Or have other heating or cooling constraints. The point is many use "natural" cooling and have no need for AC and heating is done by gas, I really wonder if you typoed or do you want to imply you heat such a big house with electricity? That would be idiotic.

      The rest of your question makes no sense. If you want to live in a 422square yard flat and complain or justify its AC or other electricity costs: that is your damn problem. Ofc a similar big house in Italy would very likely still be cheaper to heat and cool, despite more or less same climate conditions.

      Lifestyle ... is that the new anti term? Or is wasting energy "lifestyle" like drinking wine is? Sorry ... americans ... at least those who are not to poor, have no significant different lifestyle than an european. Perhaps they fly more in their own country, and drive more often longer distances with a car. The rest is just the same, there is nothing different that justifies a bigger energy footprint.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    216. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      Solar and wind cannot provide base load,
      Actually thy can, or more precisely they do.
      Base load plants get powered down when wind and solar surges, because you still need the relatively fast demand following mid range and peak plants.

      As soon as Germany is with wind power on perhaps 40% level Germany will outphase all old base load plants. Actually we are already in the process doing so.

      I have no idea why this idiotic mantra is constantly repeated on /. "X is not base load" ...

      So in terms of what we have, there are really three sources of power that can provide, in reality, base load for a billion people today in the world. Coal, natural gas, and nuclear.

      Which of those three would you prefer to have, if they are your only choices?
      They are not he only choices, for base load I use the cheapest energy I have, regardless if dispatch able or not :D as I said above, it is a misconception especially repeated here on /. that wind and solar are "not base load".

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    217. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      No, I'm actually not comparing that.

      He did :D

      I only say he believes that his extra energy spent is simply justified with the size of the flat. Which it likely is not, likely it is badly insulated, has no shades for the sun facing windows is not only cooled with electricity but also heated ... just pick it.

      I guess if he would hire a german specialist he could half or even cut his electricity bill to a third. But already told us: he wont do that as his electricity is dirt cheap ... and then he likes to compare his 11cent/kWh price with the 25c/kWh price in Germany and draws even more silly conclusions.

      Energy price, mainly influenced by taxes is the reason people invest into "technology" or equipment that lowers their bill. And hence lowers the CO2 foot print.

      Ofc that FlyHelicopter would be better of if he would calculate his bill per square foot, perhaps even cutting out AC ... then he could compare his spendings much better with europeans, or others. The main factor usually is not the size of the house but the people in the household. I live in a 2 person house hold. Ofc I use less power than a 4 person house hold. On top of that we safe a lot, but that is more by habit/lifestyle then by explicit attempts to safe power. E.g. I for my part don't shower every morning, nor does my room mate/ex girl friend (which would only change the gas bill anyway and not the electricity bill). We don't have a cloth dryer (and would not need one anyway) We have no AC, and we manage to keep the flat cool by "intelligent" opening and closing the windows in summer ... and yes outside it is often about 40 degrees C, nevertheless I have inside below 25C even in summer.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    218. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      In theory ... in practice not. The fix costs in comparison to fuel are so low, they are hardly relevant.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    219. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      The rest is just the same, there is nothing different that justifies a bigger energy footprint.

      I am curious as to what you pay for power in Italy...

      That is one difference, if something is cheap people tend to use more of it...

    220. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      Well, you just supported my claim.

      More than 5% pumped storage are not needed.

      The fact that your "grid works" (mostly) actually shows that.

      However you are in the nice situation that you have a lot of water power anyway.

      Which report do you mean again? That wikipedia article just lists the pumped storage plants :D

      And the article is wrong anyway, perhaps it only lists pumped storage above a certain size? Germany alone has like 25 pumped storage plants (only 2 listed in that article) and we are also in the 20GW and something like 400GWh range.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    221. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Germany's politicians are selling a line of bull and the population is buying it...

      You aren't going to run Germany on wind and solar, no matter how much you wish you could...

      But you won't believe me, only time will teach that lesson...

    222. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Sorry but actual data refutes your assumption. Take a look at this chart. The capitol, operations and maintenance costs for coal make up $64.20 of the $95.60 cost of 1MWhr of electricity. That makes fixed costs 67% of total costs. I would say that 67% is very relevant.

    223. Re:Space for solar hasn't been much of a concern by wolja · · Score: 1

      If only we had a way to predict when the sun would set...

      Ah the use of subtle truth may not work well here :)

      But this comment is so much on the money it's not funny. \

      A mixed strategy of
            ramping up just before the lead time required to ramp up so there's no gap shock
            Realising that as night demand rises day facing business demand drops which means the gap may not b as large as thought
            Deploying capacitors in a way that they can take the load. Probably not here yet but what I've been reading is a molten sodium tower in a new or existing development fed by the solar , wind or whatever will reduce the overall need to ramp up at night.

      --
      Wolja Future Tombstone: Shit happened then I died
    224. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      it is a misconception especially repeated here on /. that wind and solar are "not base load".

      It isn't a misconception, it is true. That you don't want to hear it doesn't change that.

      I run my AC at night, solar doesn't power that. The wind blows, then it doesn't, then it does.

      Neither of those are base load 24/7/365 power sources, basic common sense should tell you that.

    225. Re:Space for solar hasn't been much of a concern by Anonymous Coward · · Score: 0

      We often run our AC at night, it gets quite warm and without it it would be nearly impossible to sleep.

      I'm 99% certain you have poor insulation (compared to what anyone who was trying to run their AC off solar power would have), and that's your real problem.

      The vast majority of existing structures have insulation problems. You can't simply hand-wave these away. It's completely impractical to tell people only new houses can have solar power.

      To fix insulation problems, thoroughly and competently, for a typical light frame home, requires removing all the interior drywall, removing the existing insulation, and spraying foam (there are half-assed solutions that involve poking holes and blowing foam through these, but they don't work nearly as well as doing it right). Pop-out windows require additional work, as do electrical outlets and any lights that go up into the ceiling of any room under a roof. You also often need to add insulation to the roof, and for those homes with rooms over the garage, between the garage roof and the home. There's also the issue of losses through windows. Further, many older structures were not properly inspected with respect to energy issues. The building codes in many parts of the country were bought and paid for by builders looking to make a huge profit, resulting in the majority of structures (in some places) having issues. A lot of caulking and manual correction of issues will probably need to be done. Also, the design the relevant systems in many houses was not done competently.

      Further, what can be done is inherently limited by the thickness of the space available. The old 2x4 construction doesn't leave all that much thickness for insulation. With a historical house -- and even thinner walls -- you're screwed!

      An infrared camera can find all kinds of problems (especially if one can set up a pressure difference) and every new homeowner should get an energy inspection in addition to the traditional type of inspection.

      It's not cheap to take care of all this. Expect 5k-10k if you don't have to remove and replace the drywall, and it goes up from there!

      There have been major revisions to the building codes over the years to make sure new structures don't have these problems, but most structures aren't new, and can be expected to be around for another 50-100 years or more.

    226. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      More than 5% pumped storage are not needed.

      Germany alone has like 25 pumped storage plants (only 2 listed in that article) and we are also in the 20GW and something like 400GWh range.

      Where do these numbers come from? Are they based on a day, week, month or year?

      Here is some real data for germany. Lets take January (pg 89). Pumped storage production per week = 0.6TWhrs. Total production per week = 43.5TWhrs. Therefore pumped storage contributed 1.4% to weekly production. 1.4% is almost insignificant.

    227. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Well, with the lower power generation up here(though usable power generation would be darn near 24/7 during the summer), balanced by my electricity costs being double yours, yeah, at those prices it doesn't make sense.

      I'd have to do a self-install to save most of the costs. Which I'm much more willing to do on my simple-roofed single story house.

      I'm no professional electrician, but I had to learn a bit while deployed, because the real electricians were busy elsewhere and we had to get our computer equipment up.

      --
      I don't read AC A human right
    228. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Bolting panels to the roof is not the challenge, at least I don't think it is...

      Installing the inverter, a second panel, a second meter, getting it grid tied so the power runs both ways, I think is far more challenging...

      But I'm not an electrician and I don't have the tools to do it anyway. I'm pretty handy around the house, but I draw the line at anything with power, that is a good way to end up dead if you don't know what you're doing. Dead, or perhaps a fire. :(

      If someone offered me a 8kw system for $2 a watt installed with grid tie, I'd be all over that. I haven't found it.

    229. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Installing the inverter, a second panel, a second meter, getting it grid tied so the power runs both ways, I think is far more challenging...

      The inverter is easy - mount to wall, wire up. Putting the panels on the roof is what I'd rate as the trickier and more dangerous operation.
      A second meter is only required for certain incentive schemes. For example, it wouldn't make sense for me unless I installed a substantial system, but installing a second meter would allow me to 'sell' solar at the daytime price, which is higher than the standard residential rate.

      The 'tricky' part, at least to me, is the final connection. You can have everything be dead when you make the final connection by having the power company yank the meter. Before that, if you live somewhere with building codes, you have somebody inspect it before you have them put the meter back in.

      All you really need is one of those simplified code books that tell you the required wire sizes and such. For a US inverter, you'll generally have 2 hots, a neutral, and a ground. Depending on where you hook it up, the neutral and ground might go to the same spot.

      What I don't work with is gas.

      --
      I don't read AC A human right
    230. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Where I live we have net metering, so I would have a second meter on the house showing the power fed back to the grid. The power company has to install it and they have to do some other work which I don't claim to understand, but there is a cost for that. I don't think it is huge however.

      I don't expect net metering to survive, that is part of the problem with doing the math on these systems, you assume that if the system generates 30% of the power you use then your bill will go down by 30%.

      It will, mostly, for now... other than the fixed monthly fees, which won't change... but when net metering goes away and they pay you wholesale price for the power you make and charge you retail, that changes the math...

      Yes, there is a permit and inspections for the installation, and I think a licensed electrician has to sign off on the work (part of the challenge in doing it yourself is finding one who will do that and what they'll charge for it, but it can be done)

      ---

      Again I come back to there being 270,000 people in my city and only 175 solar installations on homes. If it made ANY kind of financial sense, that number should be much higher.

    231. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Where I live we have net metering, so I would have a second meter on the house showing the power fed back to the grid. The power company has to install it and they have to do some other work which I don't claim to understand, but there is a cost for that. I don't think it is huge however.

      You don't actually need a second meter for net metering(though your power company requiring it is entirely possible), though it's 'nice' to know how much energy your array is generating(and to tell you if something is wrong), but most inverters have that. Your standard electric meter is perfectly happy to run backwards, and that's all that's necessary for 'net' metering.

      Looking it up, you're serviced by Oncor, right? It's probably because of their Incentives, specifically $539 per kW, and $0.3462/kWh. That's not net metering. That's selling your energy for 3 times the regular going rate. Just remember that solar generally displaces more expensive peak power.

      That's what I was talking about with it being worth it to install a 2nd meter with a larger install. The 2nd meter allows you to sell power at the higher rate, rather than 'merely' net metering.

      Net metering won't go away until you're getting up past Hawaii install levels, where a substation's power flow might actually go negative during the day. Daytime power demand is sufficiently higher that they're still more than breaking even on solar panels saving them 'expensive' power.

      Still, if you start busting 20% of all electricity in a region being from solar generation, that's when putting batteries in starts making some sense.

      --
      I don't read AC A human right
    232. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      You don't actually need a second meter for net metering(though your power company requiring it is entirely possible), though it's 'nice' to know how much energy your array is generating(and to tell you if something is wrong), but most inverters have that. Your standard electric meter is perfectly happy to run backwards, and that's all that's necessary for 'net' metering.

      We have smart meters now, they are digital and they take the readings remotely. I am pretty sure they require a second meter, these can't run backwards, or so that is what I understand.

      Looking it up, you're serviced by Oncor, right? It's probably because of their Incentives, specifically $539 per kW, and $0.3462/kWh. That's not net metering. That's selling your energy for 3 times the regular going rate. Just remember that solar generally displaces more expensive peak power.

      No, CoServ:

      http://www.coserv.com/

      It is straight net metering, they simply subtract what you generate and put to the grid from what you take, no more or less.

      http://www.coserv.com/Customer...

      Oncore has some nice incentives to installing solar, CoServ does not. But then I pay less for power from CoServ, so there is that (nothing is free). :)

      Net metering won't go away until you're getting up past Hawaii install levels, where a substation's power flow might actually go negative during the day. Daytime power demand is sufficiently higher that they're still more than breaking even on solar panels saving them 'expensive' power.

      Net metering is already being challenged by the power companies... it is not a technical issue, it is a revenue and political issue.

      It is also reasonable... Imagine if 20% of their customers install solar, they still expect the grid to be there at night and during bad weather, yet don't want to pay anything. What if 20% of the customers install enough solar to produce 100% of the annual power use. What then, no bill at all? So they want the grid to stay up and to be able to draw power when they want it, but to pay nothing at all?

      That can't last.

      http://www.greentechmedia.com/...

    233. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Net metering won't go away until you're getting up past Hawaii install levels, where a substation's power flow might actually go negative during the day. Daytime power demand is sufficiently higher that they're still more than breaking even on solar panels saving them 'expensive' power.

      I had another thought regarding this point...

      You may well be right for now, and the reality is the total solar generation on rooftops is a rounding error right now...

      However... if you're basing the decision on installing $50,000 worth of solar panels based on the power they will produce for 20 years, don't you think it would be smart to consider what happens to the math if/when net metering goes away?

      Lets say you install enough solar to produce 100% of the power you use all year. Right now, your bill will go to zero. That is great... but what happens if in 5 years they change it to pay you 5 cents per kWh and bill you 15 cents per kWh?

      Those numbers that made solar look so good are gone, replaced by terrible numbers. Why? Because you don't actually produce and store all your power onsite, you use power from the grid at times and produce a surplus that you feedback.

      It may even out, but that only matters if you're on net metering. Run the math again with the above split and solar becomes a horrible investment.

    234. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      However... if you're basing the decision on installing $50,000 worth of solar panels based on the power they will produce for 20 years, don't you think it would be smart to consider what happens to the math if/when net metering goes away?

      You're still better off if the payback period is 13-14 years, rather than 20. Also, dig into the contracts and stuff, if you lock into net metering today they have to let you keep it.

      Plus, well, remember inflation. At that point they might be paying you 12 and charging you 25. You're still saving money.

      Finally, well, there's a reason why I sometimes posit using retired EV batteries... Because if solar power goes much above 20%, that's when you have to start worrying about daytime power actually being cheaper than night time. The way we're going right now, though, other than small isolated power grids like Hawaii, we aren't hitting 20% anytime soon.

      I'll finish by repeating what I said in my very first post: The main problem with solar power is the cost.

      --
      I don't read AC A human right
    235. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Sorry about that, I simply googled for 'Dallas Fort Worth Electric Company' and Oncor was on top.

      Fixing my assessment: initial reading:
      1. Your cooperative* is meaner than mine. Mine will allow you to 'carry a balance'. If you go on vacation or something for a month and end up going negative, you 'donate' the power to the coop. If you go the two meter route with mine, like I said, they'll pay you a higher rate for sold power(at this time), but there's an additional $5 meter reading charge for this. So only good for 'big' installs.

      Ah, section 7, for a 'distributed generator' Net metering is already being challenged by the power companies... it is not a technical issue, it is a revenue and political issue.

      Yeah, power companies tend to have some of the longest viewpoints. They're already looking ahead.

      It is also reasonable... Imagine if 20% of their customers install solar, they still expect the grid to be there at night and during bad weather, yet don't want to pay anything. What if 20% of the customers install enough solar to produce 100% of the annual power use. What then, no bill at all? So they want the grid to stay up and to be able to draw power when they want it, but to pay nothing at all?

      Remember, I'm the one who stated the 20% figure as when things start 'flipping'. Anyways, if we start approaching that things would indeed have to change. And 20% of installs would have to translate to '20% of customers install 100% net power generation'. In many areas they only really shoot for 50-80%, especially in California where you're charged progressively more the more kWh you consume. So if you're like you and use more than average, you can be faced with a bill like this:
      First 800 kWh: $.10
      Next 400: .15
      Next 400: .20
      Last 166: .30

      Replacing that last 800 kWh isn't worth it, but replacing the 566 is a heck of a lot more important than the first 1200. So you install 'enough' solar panels to generate around 6-800 kWh a month, getting you out of the top marginal rate category. ;)

      As a bonus, some of them get installs with a couple batteries that can also act as standby power - if the grid cuts out standard inverters turn off, these cut the connection to the grid like a generator transfer switch would(for line safety and such for the electric company), and intelligently manage power availability and demand. So if you set it up that way, if it's cloudy out and the batteries aren't strong enough, you might find your TV cutting off to keep your fridge running. But at least your fridge is running... (Remember my grandparents and their average of 3 days of power outage a year).

      As for your 20%-100%, do you mean 20% of customers 'eliminate' their power bill completely, or that 20% of customers generate enough power that the electric company would be net neutral for 100% of it's customers, meaning they wouldn't need to generate or buy power if it wasn't for the pesky day-night thing?

      Because, like I said, the former is something I've been addressing, the latter would break all sorts of rules.

      *And I like the idea of cooperatives for utilities, I get the best customer service from them. This has held true for phone, power, and water.

      --
      I don't read AC A human right
    236. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Okay, I read their powerpoint where they were discussing the issue. One thing that Hawaii did differently(and my power company), was that they looked at daytime marginal power specifically, not straight 'average' as the spreadsheet images showed in CoServ's. This would on average result in a higher price than CoServ's average wholesale. And be, at least for now, more realistic because solar is preventing them from having to fire up that diesel generator, not compete with a base-load coal or nuclear plant.

      --
      I don't read AC A human right
    237. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      We are not talking about PRODUCTION.

      You seem not to grasp what pumped storage is for. It is for balancing the grid.

      So the production has absolutely nothing to do with the capacity in GW it 'could' produce nor the amount of energy in GWh it can store and "release".

      (*facepalm*)

      It is super easy to google for pumped storage in germany ... http://de.wikipedia.org/wiki/L...

      Scroll down to "Deutschland" but note the numbers are from 2005.

      Therefore pumped storage contributed 1.4% to weekly production. 1.4% is almost insignificant.
      EXACTLY! and hence your and others' claims that wind and solar does not work without extensive storage is: NONSENSE Germany is a perfect counterexample for that.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    238. Re:Space for solar hasn't been much of a concern by rally2xs · · Score: 1

      "Right there is the problem with the USA."HOW DARE YOU CRITICISE ME!!!!" "

      Exactly. Its none of you're F'n business. And it's every individual's right to use as much energy has he or she can pay for.

      Comparing UK to US is apples and oranges. Our transportation alone is going to require vastly more energy because the country is almost 3000 miles "wide" and 1500 miles "tall." There's lots of open areas with very sparse population. This makes things like public transportation near impossible to do economically.

      As for heating an individual home, the midwest this year and many days where the HIGH temperature for the day was something like seven below zero, and that was fahrenheit. UK has something called the North Atlantic Drift that comes from the Caribbean and helps warm it.

      Yeah, my own winter-time KwH is around 1700 per month right now, but this place is all-electric, too - water heating, house heating, water well pumping, electric cooking, etc. etc. Match it if you can - remember, no using natural gas, oil, etc. to heat. I don't think you can. I have about 1700 sq. ft. and here all by myself, out in the boonies. No natural gas to use, which would be far cheaper.

    239. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1


        run my AC at night, solar doesn't power that. The wind blows, then it doesn't, then it does.

      Neither of those are base load 24/7/365 power sources, basic common sense should tell you that.

      Actually on a national scale the wind always blows.
      And: as I mentioned now about 1000 times on /. : your definition of base load is wrong
      All that has nothing to do with base load.
      Base load is a flat line, like the basement of your house or the "base income" or what ever you can imagine with the name "base" in it.
      In other words if you have 100 power plants, like 40% of them will be so called base load plants and run around 90% of their capacity around the clock with no change in output over the day and only a slight change of output over the course of the year.
      They do that regardless of demand so even if the demand drops below their production you use the excess to refill your pumped storages: that is base load. And with wind and solar being cheaper than coal, you obviously power down and phase out old base load plants.

      What is so hard to grasp that "base load" is a flat line cutting from left to right through your daily load curve? You have a load curve over the day, peeking at 7:00 AM and 7:00PM and a hilly plateau in between, perhaps another bigger peek somewhere, and the rest of the curve is like 40% / 50% of that peak. The lowest valley in that curve: that is base load. Because with that point you decide how many "base load plants" you want to have in your grid. It is super simple.

      So, now germany produces X GW of power with wind on average, and the wind power production has never dropped below Y since 2 years. Hence we can phase out or cold store as many base load plants that equal Y in power production. So: wind is base load. As simple as that. In 20 years germany will have no traditional base load plant anymore, they all will be replaced by wind.

      Same with solar. Base load plants react very slowly, they are designed to be like that. So depending on what plants you have in your fleet it is very likely that you power down base load plants to like 45% when solar energy surges. Powering down mid range plants would make you lose flexibility (you need to be able to power them down for sudden changes later)

      Base Load and dispatch able/non dispatch able are orthogonal concepts. You keep mixing them up!

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    240. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      1. Your cooperative* is meaner than mine. Mine will allow you to 'carry a balance'. If you go on vacation or something for a month and end up going negative, you 'donate' the power to the coop.

      Meh, I think the fact that they do net metering at all is nice... I honestly don't think it is fair to the power company.

      It would benefit me, but any long term deal has to be fair to both sides. I wouldn't like net metering if I was a power company.

      And 20% of installs would have to translate to '20% of customers install 100% net power generation'. In many areas they only really shoot for 50-80%, especially in California where you're charged progressively more the more kWh you consume. So if you're like you and use more than average, you can be faced with a bill like this:
      First 800 kWh: $.10
      Next 400: .15
      Next 400: .20
      Last 166: .30

      That cost structure makes no sense, it is entirely politically motivated.

      What difference does it make if you have 2 houses, each drawing 800 kWh, vs. 1 house drawing 1,600 kWh? The load is the same, the demand is the same.

      The idea that you pay more as you use more strikes me as silly, it should be the other way around. As you use more, it should cost less. The base infrastructure has to be paid for, the utilitly needs X employees per installation location and area. If you use more power, they can spread those costs over more kWh so the price per should be less, not more.

      It is completely backwards to how it should work.

      As a bonus, some of them get installs with a couple batteries that can also act as standby power - if the grid cuts out standard inverters turn off, these cut the connection to the grid like a generator transfer switch would(for line safety and such for the electric company), and intelligently manage power availability and demand. So if you set it up that way, if it's cloudy out and the batteries aren't strong enough, you might find your TV cutting off to keep your fridge running. But at least your fridge is running... (Remember my grandparents and their average of 3 days of power outage a year).

      To be frank, I don't think you're going to get very many people interested in a system where the TV cuts off because the battery can't power everything.

      If you really want to get a lot of people to change, you have to offer something better. We use coal and natural gas because they are currently the "best" solution. Offer a "better" solution and people will flock to it of their own accord.

      Solar is currently only a "good" solution when faced with the combined artificial incentives of overpriced power and subsidized panel installs. Well heck, I can make ANYTHING look good if I'm allowed to edit the market conditions to favor product X. :)

    241. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I'll finish by repeating what I said in my very first post: The main problem with solar power is the cost.

      Yep... which is why there are 270,000 people in Plano, TX with only 175 installs of residential solar, it makes no economic sense.

      The only people doing it are those who value something other than money. Which is fine, more power to them... but you'll never get mass adoption until it makes sense with the money.

      ---

      As a side note, nuclear appears to have the same problem, but for different reasons. It appears that nuclear simply costs too much due to various reasons. It *shouldn't*, but it does and that may not change in the near future.

    242. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      It is for balancing the grid.

      It is also for shifting supply to demand. When supply is higher than demand the excess electricity is stored by pumping water. When demand is higher than supply the water is run through the turbines to meet the demand.

      If there is more demand for 50GW and only 25GW can be produced then there is a problem. If the reservoirs are dry because they have been used there is a problem. Therefore capacity and amount of electricity produced is very important.

      The article contents that all electricity need for California can be fulfilled by solar power. They do not differentiate between daytime demand and nighttime demand. They make no reference to and difficulties in integrating large amounts of solar into the grid.

      EXACTLY! and hence your and others' claims that wind and solar does not work without extensive storage is: NONSENSE

      Let me fix that for you

      hence your and others' claims that very large amounts wind and solar does not work without extensive storage

      Take a look at any production graph in this report. Notice that at all time there is a significant amount of conventional production. The article contends that all daytime demand can be fulfilled by solar. At no time Germany does 100% of electricity come from solar/wind therefore Germany has never had to ramp up or down as fast as necessary if solar fulfilled day demand. Germany is not an counterexample as the scenario is very different.

    243. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Meh, I think the fact that they do net metering at all is nice... I honestly don't think it is fair to the power company.

      It benefits the power company 'right now' because daytime marginal power is generally more expensive than average wholesale.

      IE you're not displacing the cheap, fraction of a cent per kWh, coal or nuclear power. You're replacing the relatively expensive natural gas or even oil peak power plant.

      That would cease being true at around 10-15%, depending on regional variances.

      That cost structure makes no sense, it is entirely politically motivated.

      No duh, though the argument is by avoiding excessive consumption they can avoid the cost of building new power plants. Which California so kindly made nearly impossible...

      Some of the idea is also that if you use more power, they're more likely to need to beef up the power lines, but that actually scales pretty well.

      To be frank, I don't think you're going to get very many people interested in a system where the TV cuts off because the battery can't power everything.

      If they're that antsy over their TV, they buy a bigger battery pack and/or hook a generator into the system. You just don't get how 'greenies' think. I think they're dumb a lot of the time, but I at least understand their thought processes a bit. If nothing else, generator + small battery pack + solar tends to translate to very efficient use of the generator. If their TV cuts out, they simply get on their laptop or something. Keep in mind that they're already suffering a power outage from the Electric Company! You'd be down to flashlights from what I've gathered(no reason to buy or hook up a generator, and you wouldn't really know how to hook it into your home's electric system safely anyways).

      We use coal and natural gas because they are currently the "best" solution. Offer a "better" solution and people will flock to it of their own accord.

      Well, there's always the threat that congress will pass a carbon tax, that would cause your electric bill to shoot up.

      Still, the biggest problem with solar is cost. Not so much the panels today, but the complete system. Install costs have to come down, and panels are getting relatively cheap. Much more and they'll be cheaper than shingles!

      There are some benefits outside of 'cheaper power', such as how I mentioned that if you have solar panels and the 'right' inverter setup, you can still have 'some' power even during a grid outage, without having to mess with a generation system. People value that. Even if they do end up getting a generator, such a system can really maximize the generator's efficiency, turning it on and running it at peak efficiency to provide power to the house and charge the batteries. When the batteries are charged, the generator shuts off. During the day the solar panels provide for demand and keep the batteries charged, keeping the generator from having to run.

      My priority list for power: heat, food refrigeration(don't need it if I don't have heat), lights, computer, other appliances, HVAC, etc... You make all these decisions when you size the system.

      --
      I don't read AC A human right
    244. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If they're that antsy over their TV, they buy a bigger battery pack and/or hook a generator into the system. You just don't get how 'greenies' think.

      I'm not thinking about "greenies" at all... I'm thinking about normal people, John and Jane Q. Public... i.e. the 80% of the middle of the pack of Americans to whom this is not priority one...

      Do they care about the environment? Sure, of course... to a point... it is #17 on their list of crap to care about today, so it matters, but only until it starts costing them money, then they care a whole lot less.

      ---

      Let me put this another way... until you can come up with something better than coal and natural gas to provide post, John and Jane Q. Public are not going to change... until THEY change, nothing is going to happen to CO2 emissions except continue to go up.

      So this is all hot air (no pun intended) until a solution is found that doesn't involve batteries, complex timing requirements, or having the TV go off due to a lack of solar or wind power during prime time.

      You REALLY want to see some riots? Try having the TVs go out during NASCAR or Monday Night Football... tens of millions of American's won't give two hoots about the environment then...

      As someone wiser than me once said... "I'm not giving you my opinion, I'm telling you which way the wind is blowing".

      The average American doesn't care *enough* to make the kinds of changes that are needed using current technology and budgets. The only real solution is to find a replacement for coal and natural gas that doesn't require all these compromises. Solar and wind have too many issues attached to them, people want reliable power 24/7/365 and they want it for a reasonable price.

      Nuclear has issues, I would be remiss to not admit it has issues... but at the end of the day, it is the only power source I can see replacing coal and natural gas. That being said, I don't think it is going to happen, I think it simply has too much opposition from people who reply with emotion rather than logic, so nuclear isn't likely to happen.

      So what WILL happen? I think 20 years from now we will get perhaps twice as much power today from solar/wind/water, but the bulk of power will continue to come from coal and natural gas. I think there is a decent chance that remains true in 50 years as well, when we see CO2 levels pass 500 PPM and still no one is going to care that much.

      The "greenies", as you put it, will be still pitching a fit, and not getting anywhere.

      ---

      Well, there's always the threat that congress will pass a carbon tax, that would cause your electric bill to shoot up.

      While that is true, I just don't see it happening... Congress critters like to stay in power and that would be a quick way to get voted out...

      Still, the biggest problem with solar is cost. Not so much the panels today, but the complete system. Install costs have to come down, and panels are getting relatively cheap. Much more and they'll be cheaper than shingles!

      Yes, the panel cost is now less than 1/3 of the total install cost. You could give the panels away for free and solar would still not be a great investment.

      But that misses the point. Even if you DID give away solar and even if solar DID become 20% of the total power generation, it would make no difference to the outcome of climate change.

      If you aren't willing to shut down the existing coal plants and if you aren't able to get EVERYONE ELSE to shut theirs down, then it doesn't matter what we do. The outcome is likely to be the same, or close to it.

      ---

      If man made climate change is real, then we're screwed because the bulk of the world's population is not willing to do what it takes to stop it, or even slow it down.

    245. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      I'm not thinking about "greenies" at all... I'm thinking about normal people, John and Jane Q. Public... i.e. the 80% of the middle of the pack of Americans to whom this is not priority one...

      That's kind of the point. I'm having to approach this from the solutions that people have actually installed, which typically fall into three camps.
      1. Those who are seeing to save money, yet are in an unusual enough situation where this DOES save money. See sunny areas with elevated electricity costs, like Hawaii.
      2. Greens. They're doing it to save the planet.
      3. Self-Reliance types. By installing solar panels they reduce their dependence upon foreign power, oil, etc... IE while they can still have the 'luxury' of a grid connection most of the time they enjoy the idea that they'll still have power if the grid goes down.

      In the quest to optimize what capital they have, they are often willing to make some sacrifices.

      So this is all hot air (no pun intended) until a solution is found that doesn't involve batteries, complex timing requirements, or having the TV go off due to a lack of solar or wind power during prime time.

      Musk's 'Megafactory' is supposed to cut the cost of LiIon batteries in half. The modern grid requires 'complex timing'. If the TV is at risk of going off during prime time(and I haven't turned mine on in months, now that I think about it), that indicates a lack of sufficient engineering or people who don't care that much about prime time TV. (I point back to the examples above, current installers are not typically normal people).

      even if solar DID become 20% of the total power generation, it would make no difference to the outcome of climate change.

      Yes it would. It wouldn't be a complete solution, but at that point it's getting there. My 'ideal' non carbon power mix is 20% solar, 20% wind, 40% nuclear, and 20% 'other' including hydro.

      Every coal plant we shut down is lives saved, that much less CO2 for global warming.

      --
      I don't read AC A human right
    246. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Yes it would. It wouldn't be a complete solution, but at that point it's getting there. My 'ideal' non carbon power mix is 20% solar, 20% wind, 40% nuclear, and 20% 'other' including hydro.

      Every coal plant we shut down is lives saved, that much less CO2 for global warming.

      Consider that 80% of a really big number is more than 100% of a slightly less big number.

      Example (totally made up numbers for easy math):

      Today, we're making 10 terawatts of power using 100% coal. This puts 100 gigatons of CO2 into the air.

      In 20 years, we're making 15 terawatts of power using 80% coal and 20% solar. This puts 120 gigatons of CO2 into the air.

      This is not an improvement, even though solar now accounts for 20% of our total power output.

      Until it flips around to 80% solar, 20% coal, and assuming that we don't triple our energy use in the next 50 years, it won't make a lick of difference. Keep in mind this doesn't take into account oil burned for transport.

      ---

      Assume for a minute that the climate change people are right and that we're putting too much CO2 into the air. If that is correct, then we are so far from a solution, it might be easier and cheaper to adapt to the new world that is coming than to try and stop it. We would almost have to go cold turkey tomorrow, either shutting down half our power plants, or we'd need the biggest nuclear construction project you can imagine.

      The efforts being made don't change the outcome by enough to matter.

      It is worth pointing out that at the current growth rate of CO2 emissions in the BRIC nations, the US and EU could cut our emissions to ZERO tomorrow, and within 20 years it wouldn't matter because BRIC all by themselves would replace what we were putting out.

      You have to get the whole world to change, or it doesn't matter, as CO2 will just keep rising.

    247. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Consider that 80% of a really big number is more than 100% of a slightly less big number.

      I wouldn't consider 10 as 'slightly less' than 15 in most contexts. I also don't know what you're trying to teach or demonstrate to me, seeing as how:
      1. Power demand is leveling off in the USA, per household use is decreasing, and the rate of growth for number of households is also slowing.
      2. If you're going to go from 10TWh to 15TWh, that means that you have to build a ton of new power plants, and the EPA has made building new coal plants even more uneconomical than new nuclear.

      Until it flips around to 80% solar, 20% coal, and assuming that we don't triple our energy use in the next 50 years, it won't make a lick of difference. Keep in mind this doesn't take into account oil burned for transport.

      You did read my post, right? You didn't just skim it? 40% nuclear, 20% solar, 20% wind, 20% other(hydro, geothermal, tidal, biomass, etc...) doesn't leave any coal being burned for electricity. I can live with it being burned to create steel and such.

      Also, remember my mentioning using retired EV batteries? If you have enough of those to have one in 'every' house, it logically leads that there needs to be an EV in 'every' house.

      We're going to end up adopting to the 'new world' no matter what, but we can at least try to limit the damage, and I hate coal for the pollution it emits that kills people more than I hate the CO2 it produces.

      It is worth pointing out that at the current growth rate of CO2 emissions in the BRIC nations, the US and EU could cut our emissions to ZERO tomorrow, and within 20 years it wouldn't matter because BRIC all by themselves would replace what we were putting out.

      If we build enough nuclear plants to shut down all our coal plants(we'll need to build about 200 of them), we'll have building them nailed down to pretty much routine. At which point we can get the BRIC nations adopting them as well.

      Dude, just because something isn't a '100%' solution doesn't mean that we shouldn't still go for it if it provides worthy benefits.

      --
      I don't read AC A human right
    248. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      It is also for shifting supply to demand. When supply is higher than demand the excess electricity is stored by pumping water. When demand is higher than supply the water is run through the turbines to meet the demand.

      Exactly that is, what is called 'grid balancing', or do you think you balance only in one direction?
      As soon as wind/solar ramps up, you 'balance' with pumped storage the fine grain 'surplus' and ramp down conventionals for the big impact.

      The last part of your post makes no sense to me. Obviously germany only had at very special days so far a close to 80% renewable production. Do you finally agree that you only have use for significant amount of storage when un dispatchable production reaches (or exceeds) the 80% to 100% range, or not?

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    249. Re:Space for solar hasn't been much of a concern by angel'o'sphere · · Score: 1

      Erm, so you define efficiency by the percentage of gas that is burned? Or what is your breathing argument supposed to mean?

      Stoves and other means to heat water are far far far away from you proclaimed efficiency.

      Far over 50% of the heat is just wasted through the exhaust, unless you have high efficient heating systems where you might approach 75%-80%, I really doubt americans have that.

      Another way to increase efficiency is to use catalytic burning, similar to fuel cells but focused on creating heat instead of electric power.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    250. Re:Space for solar hasn't been much of a concern by jklovanc · · Score: 1

      Pumped storage:
      Each pumped storage installation has a limit on the amount of electricity it can draw or supply and a limit on the total amount of electricity it can supply before the reservoirs run dry. What happens of there is 200MW of extra power generated and only 100MW of pumped storage available? What if there is 200MW of demand and only 100MW of pumped storage available. What if there is any demand and the pumped storage high reservoirs are dry? Capacity has a big impact on the

      Do you finally agree that you only have use for significant amount of storage when un dispatchable production reaches (or exceeds) the 80% to 100% range, or not?

      I would say 70%-100% depending on the ramping ability of local conventional producers (natural gas ramps much faster than coal) would cause a problem. Considering this article is talking about producing 500% of demand do you see how their "solution" could be a problem?

    251. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      I wouldn't consider 10 as 'slightly less' than 15 in most contexts. I also don't know what you're trying to teach or demonstrate to me, seeing as how:
      1. Power demand is leveling off in the USA, per household use is decreasing, and the rate of growth for number of households is also slowing.
      2. If you're going to go from 10TWh to 15TWh, that means that you have to build a ton of new power plants, and the EPA has made building new coal plants even more uneconomical than new nuclear.

      You are correct that the growth rate in the US is slowing... it hasn't stopped, just slowing...

      I'm trying to point out that percentages can lie, it sounds really good to go to 20% solar, until you look at the total number. If your total number goes up by 50%, then you aren't making progress, you're falling behind.

      New coal plants aren't being built because natural gas has become cheap. We are still increasing our power production levels, but we're doing it with natural gas. Solar remains a rounding error, wind is doing ok however and will keep growing slowly.

      ---

      It is also worth noting that the USA is not the world. China is a problem, as are many other nations...

      http://www.climatecentral.org/...

      In just 5 years, from 2005 through 2009, China added the equivalent of the entire U.S. fleet of coal-fired power plants, or 510 new 600-megawatt coal plants.

      From 2010 through 2013, it added half the coal generation of the entire U.S. again.

      At the peak, from 2005 through 2011, China added roughly two 600-megawatt coal plants a week, for 7 straight years.

      And according to U.S. government projections, China will add yet another U.S. worth of coal plants over the next 10 years, or the equivalent of a new 600-megawatt plant every 10 days for 10 years.

      ---

      The point is, it doesn't matter how many more megawatts of solar/wind/hydro you bring on if you're still bringing on more coal.

      For that matter, it wouldn't matter if we STOP building new coal, we have to shut down the ones we have, or CO2 will keep going up.

    252. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      You did read my post, right? You didn't just skim it? 40% nuclear, 20% solar, 20% wind, 20% other(hydro, geothermal, tidal, biomass, etc...) doesn't leave any coal being burned for electricity. I can live with it being burned to create steel and such.

      Yes, but that isn't going to happen...

      Nuclear has so much popular opinion against it, it just isn't going to get any traction. China and Russia are building some, but not enough.

      Please keep in mind, I'm not saying it is a bad idea, I'd love it... but the reality of popular opinion, political support, and where the money is, says that just isn't going to happen...

      http://instituteforenergyresea...

      China plans to build 50 coal gasification plants in less populated northwestern parts of the country, using the gas produced to generate electricity in the more populated areas, where smog is prevalent. Two coal gasification pilot plants have been built, three more are under construction, and 16 have been approved for construction, while the rest are in various planning stages.

      Coal gasification produces more carbon dioxide than a traditional coal plant. According to a study by Duke University, synthetic natural gas emits seven times more greenhouse gases than natural gas, and almost twice as much carbon dioxide as a coal plant.

      There are other concerns besides CO2, China is dealing with massive pollution, one of the ways is they are building these far from population centers. But they make TONS of CO2.

      The overall point is that we have to address CO2 from a planet point of view, not a nations point of view. And THAT is even LESS likely to happen.

    253. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      Also, remember my mentioning using retired EV batteries? If you have enough of those to have one in 'every' house, it logically leads that there needs to be an EV in 'every' house.

      We're going to end up adopting to the 'new world' no matter what, but we can at least try to limit the damage, and I hate coal for the pollution it emits that kills people more than I hate the CO2 it produces.

      I am not at all convinced we'll have an EV in every house. EV batteries are not remotely clean, they are just made in China were we currently ignore the pollution of their production.

      As for limiting the damage, if you spend all your money and resources trying to limit the damage by a little bit, you'll have nothing left to plan for the new world.

      Simple example:

      You're on a small Pacific island, there is a big storm coming, so you want to prepare. You put sand bags out on the beach, you board up your house, you move stuff to higher land, you dig trenches around your property to give water somewhere else to go besides your home...

      You also decide, just in case, to build a boat as an escape plan, in case the storm is too big. But because you spent so much time putting out sand bags, digging trenches, etc. you didn't get the boat done, or didn't stock it with enough food.

      So the storm comes and it turns out to be a massive typhoon that washes over the whole island. Your boat isn't enough to get you to the main land, and all your prevention efforts were completely wasted and ineffective.

      Had you just written the house off and put everything into building the boat, you would have survived.

      ---

      What is the moral of that story? Changing what is coming by 2%, or 5%, or even 20%, isn't going to actually change what is coming. It is a binary result, either the island is wiped out or it isn't. Putting half our money into trying to stop it is a waste, instead prepare for it since we can't stop it at this point.

    254. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      If we build enough nuclear plants to shut down all our coal plants(we'll need to build about 200 of them), we'll have building them nailed down to pretty much routine. At which point we can get the BRIC nations adopting them as well.

      Dude, just because something isn't a '100%' solution doesn't mean that we shouldn't still go for it if it provides worthy benefits.

      I agree that if we made building nuke plants a normal thing, we'd get better at it and the technology would improve.

      But lets be honest, public opinion is not on nuclear's side.

      Another point to consider is that while we could lead by example, the question becomes would the change come in time to matter. Getting public opinion turned around and getting several thousand nuclear plants built world wide would take many decades, if not the rest of this century. By that point, CO2 will have passed 550 PPM and it won't matter anymore...

      As for something being worth "going for" if it doesn't provide a 100% solution, I answered that in another post. I'll give another example...

      Lets say you're flying across the Atlantic, you have 1,000 gallons of fuel and the trip needs 1,000 gallons of fuel, you'll JUST MAKE IT if everything goes right. 1/3 off the way across, you discover the winds are not in your favor and you'll now be 100 gallons of fuel short.

      What do you do? You turn around, you can no longer make it. It is a binary result, you either have enough or you don't, hoping that you can almost make it or that things will get better or that maybe if you just fly REALLY well it will work out.

      You know what? Many ferry pilots of small aircraft flying to Hawaii have crashed, sometimes within sight of the islands, because they pushed the limits too far.

      ---

      Does it matter if the CO2 levels in 2100 are 550 PPM, 545 PPM, or 555 PPM? I would suggest that it doesn't, not really. If we spend our resources trying to get them from 550 PPM down to 545 PPM, or even 540 PPM, that completely misses the point...

      They just passed 400 PPM two months ago. If that is the safe level, then anything in the mid 550s is bad, holding it down a bit doesn't matter if you're way, way past the red line.

      ---

      Let me turn this around and ask you a question:

      "What would it take for CO2 levels to stop rising... today...?" As in, stay at 400 PPM and not rise any further? We are currently added 2 PPM per year, so something major would have to change.

      What would you do to make that happen?

    255. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Erm, so you define efficiency by the percentage of gas that is burned? Or what is your breathing argument supposed to mean?

      Consider that an Electric range is going to be wasting a huge amount of the heat anyways. So in that case, for stove, yeah, it's pretty much how efficiently it's burning the gas.

      Or, to put it another way, how many kWh does a electric stove use compared to how many kWh equivalents does the NG stove use? Then figure that if the NG is being burned at a power plant to produce the electricity, the power plant is only 50% efficient. So as long as the NG appliance is more than 50% efficient at producing usable heat, it's more efficient than the electric one.

      For heat retention, as for a furnace, my standard is indeed heat retained.

      Far over 50% of the heat is just wasted through the exhaust, unless you have high efficient heating systems where you might approach 75%-80%, I really doubt americans have that.

      For your information, I'm pretty sure it'd be illegal to sell a heating system that's wasting 50% of the heat up the pipe in the USA. You have this picture of Americans being energy wasters, but in my experience while we do have our crappy homes, we're a lot closer to Europeans than most think.

      "Might approach 75-80%"? My boiler isn't the best, but when I bought it it was the best in my size range. It's 85%. And I'm about 10% less efficient than the 'best' products because, again, at the time, they simply didn't make a small enough condensing unit that can take the acidic condensation from oil.

      And yes, that means that, at least during normal operations, it's pulling 85% of the heat from the burned oil into the water. Any higher and I'd have condensation, which adds some complexity, especially with oil and such due to the acid.

      As for water heaters, even the crapiest one I could find has an energy factor of .59, and the energy factor includes standby losses! So if it's almost 60% efficient at delivering BTUs worth of hot water when you include standby and circulation losses, it has to be better at getting the heat into the water in the first place. Wrap it with a insulating blanket and the EF will go up.

      So, personal example, 85%. BTW, my boiler also provides my hot water as well as heating my house, so that's my 'overall' efficiency. Crappiest water heater I could quickly find: .59. Best I found: .68 - A larger tank, more insulation, equates to more efficiency.

      --
      I don't read AC A human right
    256. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      If your total number goes up by 50%, then you aren't making progress, you're falling behind.

      20% of 15TWh being solar is better than that 20% being coal, even if it still means you're generating more CO2 than before.

      There are reasons why I want to be building lots of nuclear plants right now.

      It is also worth noting that the USA is not the world. China is a problem, as are many other nations...

      That China is doing it isn't an excuse for us to be doing so.

      --
      I don't read AC A human right
    257. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      I am not at all convinced we'll have an EV in every house. EV batteries are not remotely clean, they are just made in China were we currently ignore the pollution of their production.

      No they're not. At least Tesla's aren't. Also, they're recyclable.

      It is a binary result, either the island is wiped out or it isn't.

      It's not a binary result. Rest of argument ignored.

      Realistically speaking, you crunch the math and find the best mix of prevention and acceptance, like we do for everything else. Though we tend to end up having to accept more that we could have prevented cheaper.

      --
      I don't read AC A human right
    258. Re:Space for solar hasn't been much of a concern by Firethorn · · Score: 1

      Does it matter if the CO2 levels in 2100 are 550 PPM, 545 PPM, or 555 PPM? I would suggest that it doesn't, not really. If we spend our resources trying to get them from 550 PPM down to 545 PPM, or even 540 PPM, that completely misses the point...

      It's not a binary option though. 600PPM is worse than 500 is worse than 400. It's a continuum. So about 4 paragraphs of examples and such are wasted because you're treating something that isn't binary as a binary.

      "What would it take for CO2 levels to stop rising... today...?" As in, stay at 400 PPM and not rise any further? We are currently added 2 PPM per year, so something major would have to change.

      Lost my other post earlier, not willing to completely rewrite it. Simplified version:
      1. I believe that we're going to have to accept some increase in CO2 and such, so not even I think this is a realistic plan, so attacking it for being unrealistic isn't going to work.
      2. In order to stop CO2 rising, it'd need to be, as you have said, a world-wide effort.
      3. You start by examining all the CO2 production and determining both what are the largest amounts of CO2 release for the least amount of economic activity, and the relevant 'marginal costs' for reducing or eliminating the releases.
      4. I happen to think that coal power would be high on the list. Short term, replace with NG. Long term, nuclear, solar, wind, biomass, etc...
      5. We'll have to get off our high horse about nuclear. At this point I think that I encounter more opposition against nuclear from people TALKING about people being against nuclear, than actual anti-nuclear people.
      Transportation wise: A mix of EVs which can be charged via solar/nuclear and such, and biofuel vehicles, with the biofuel coming from things like algae farms.

      Timeline required: About 40 years for the vehicles, about 80 for the power.

      --
      I don't read AC A human right
    259. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      That China is doing it isn't an excuse for us to be doing so.

      No, it isn't... but the reality is that if China doesn't change, it doesn't matter what we do.

      They are burning 5 billion tons of coal a year, we're burning 1 billion. They are on track to increase that to 6 billion in the next few years.

      We could cut to zero, it won't change the outcome by enough to matter.

    260. Re:Space for solar hasn't been much of a concern by FlyHelicopters · · Score: 1

      5. We'll have to get off our high horse about nuclear. At this point I think that I encounter more opposition against nuclear from people TALKING about people being against nuclear, than actual anti-nuclear people.
      Transportation wise: A mix of EVs which can be charged via solar/nuclear and such, and biofuel vehicles, with the biofuel coming from things like algae farms.

      I don't want to argue, I actually agree with many of your points in theory...

      I suppose if I had to sum up my views, it would be this:

      "When I look at the real world that we actually live in, I don't actually see us doing anything until it becomes a disaster. We will continue to burn fossil fuels until long past the time to stop was and the ability to actually do anything about it is past"

      Why? Because we aren't going to Nuclear, as you say. We just... aren't... we should, but we won't, so that's that.

      Solar and Wind? Yes, we'll get more of it, but not enough... it'll be a rounding error, maybe 10-20% of the total power produced, if we're lucky, world wide, and I think even that is a stretch... but it won't matter, as the total power the world produces continues to climb, it just won't matters.

      Which makes me sad, because I suppose we're screwed, but then maybe we deserve to be if we're unable to plan longer than one election cycle in advance.

  3. California leads the charge by Anonymous Coward · · Score: 0

    There's a good reason why we call it the most progressive state in the U.S. (if not the world).

    After all the recent baseless insults, all that is left to say is Everybody line up and suck it.

    1. Re:California leads the charge by Anonymous Coward · · Score: 0

      Have you ever actually gone to California and smelled the air?

      You can literally SEE the smog.

      They are like the American version of China. Oh, and I heard that Apple employs Chinese slaves.

    2. Re:California leads the charge by Chrisq · · Score: 1

      Have you ever actually gone to California and smelled the air?

      You can literally SEE the smog.

      They are like the American version of China. Oh, and I heard that Apple employs Chinese slaves.

      That's terrible. Why can't they employ Californian slaves instead?

    3. Re:California leads the charge by Anonymous Coward · · Score: 0

      If by progressive you mean the shittiest roads.

    4. Re: California leads the charge by Anonymous Coward · · Score: 0

      California, nice place to visit but bad place to live. Too much government and way too many people. No thanks I'll keep my home in Midwestern states visit as needed.

    5. Re:California leads the charge by drinkypoo · · Score: 1

      Have you ever actually gone to California and smelled the air?
      You can literally SEE the smog.
      They are like the American version of China.

      It's funny you should mention China, because due to the efforts of the much-hated CARB, it is now a regular event that there is more pollution from China in Los Angeles than there is from local sources.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    6. Re:California leads the charge by rally2xs · · Score: 1

      Been to California last year. Never saw / smelled a thing. Denver is worse, I can see that.

  4. How much would it cost? by HuguesT · · Score: 1

    What is the material, labor and recycling cost of doing so ? Lack of space is likely not the blocking issue with solar. Google probably has the answers.

  5. Night by jklovanc · · Score: 1

    And meet 0% of the demand at night if they don't have storage which is very expensive.

    1. Re:Night by quenda · · Score: 1

      And meet 0% of the demand at night if they don't have storage which is very expensive.

      No problems. Just dam and flood the San Fernando Valley. Pump up water in the day, and run on hydro at night.
      Cost and other practical factors don't seem to come into consideration in this discussion.

    2. Re:Night by jklovanc · · Score: 1

      You funny.

    3. Re:Night by mjgday · · Score: 4, Interesting

      Storage is today's big issue in the energy world.

      Having said that, the cost of a storage system used to double the cost of a 3-4 kW (peak) PV system about 5 years ago. I expect since then the prices of PV has fallen more sharply than the price of lead acid batteries, meaning it may well now triple, but still it's hardly "very expensive".

      It is cheaper, and more optimal electrically, to sell the power to the grid and then buy it back from another generator when you aren't generating. Of course that doesn't work if everyone is using the same kind of generators and there's no storage, which is why we need storage. As many storage technologies suffer from efficiencies of scale it probably makes more sense to at least partially centralise the storage.

      What probably needs to happen (it certainly needs to happen in .uk) is the energy market needs to be restructured so as to make storing energy profitable, then companies will set up to do it.

      --
      foo
    4. Re:Night by jklovanc · · Score: 1

      Storage is today's big issue in the energy world.

      I agree completely but few people are working on storage as it is not sexy. They are content with pointing the finger at conventional plants and saying they will handle it. Sorry but the cost of power from conventional plants will rise if they only produce at night.

      PV has fallen more sharply than the price of lead acid batteries

      Lead acid batteries have long been known to be a poor solution to store large amounts of electricity. They take up lots of room, produce dangerous hydrogen gas and need to be maintained.

      the energy market needs to be restructured so as to make storing energy profitable,

      The cost of storage will always be high as the costs include the following;
      1. the cost of input electricity
      2. The decrease in output due to conversion losses.
      3. capitol costs for the storage system
      4. maintenance costs for the storage system.
      Today there are very few large scale storage systems like pumped hydro and compressed air storage. Both of these technologies need very specific conditions and can only be used in very few places.Sorry but battery storage is not a large scale solution as it is extremely expensive.

    5. Re: Night by einar.petersen · · Score: 1

      Look at http://www.ambri.com/technolog... American made. Cheap and effective. You do actually have some pretty smart people over there and they already have the solutions you need. The TED talk is here http://www.ted.com/talks/donal... I believe you might find that you are indeed at a most opportune moment in time for making a shift to renewable power and making a huge difference environmentally speaking

      --
      MS, ALS, Aphasia ? http://globability.org - Me http://einarpetersen.com
    6. Re:Night by mjgday · · Score: 1

      Storage is today's big issue in the energy world.

      I agree completely but few people are working on storage as it is not sexy. They are content with pointing the finger at conventional plants and saying they will handle it. Sorry but the cost of power from conventional plants will rise if they only produce at night.

      I cannot help that much of the world is deluded. That is not an Engineering problem. I also discourage engineers who seek to work on sexy projects.

      PV has fallen more sharply than the price of lead acid batteries

      Lead acid batteries have long been known to be a poor solution to store large amounts of electricity. They take up lots of room, produce dangerous hydrogen gas and need to be maintained.

      Oh indeed, but if we're talking about domestic scale storage then lead-acid is the solution most people go for. Although someone here was on about Iron-Nickel. Regardless, I agree chemo-electric storage is useful for it's portability, but it's energy density, in-out efficiency and leakage rates mean it's not really suited for Grid scale storage, with the possible exception of Vanadium flow, http://www.triplepundit.com/2014/12/vanadium-flow-batteries-gaining-commercial-clean-tech-traction/

      the energy market needs to be restructured so as to make storing energy profitable,

      The cost of storage will always be high.

      But the costs to mankind of not sorting the energy issue is likely higher, but far more difficult to express in monetary value.

      Today there are very few large scale storage systems like pumped hydro and compressed air storage. Both of these technologies need very specific conditions and can only be used in very few places.Sorry but battery storage is not a large scale solution as it is extremely expensive.

      There's a few more active players Pumped Heat, Hot Salt, Tidal Lagoons, Steam Accumulators, Raising a Weight, the technologies exist, it's just noone wants to invest in them because there is no market for storing energy.

      --
      foo
    7. Re:Night by AGMW · · Score: 1
      You sell any daytime excess back to the grid during the day, and draw back at night (see also Tesla's new home battery pack stuff?). Then California is generating a bunch of power during the day and maybe it could sell some of that to neighbouring states? Store some itself maybe (there are various technologies that could allow that)?

      It's odd how it seems like most posters are trying to find problems rather than trying to find solutions. It's almost like you don't want solar power, when 'solar' is one of the things California has so much of.

      --
      Eclectic beats from Leeds, UK
      handmadehands.co.uk
    8. Re:Night by BradMajors · · Score: 1

      It is cheaper, and more optimal electrically, to sell the power to the grid and then buy it back from another generator when you aren't generating

      It is even cheaper and more optimal electrically, if your electric utility owns the solar panels and sells you the electricity from them when you need it.

    9. Re:Night by Anonymous Coward · · Score: 0

      Do they ever in these discussions ? You have people that wouldn't know three phase power from a star trek phaser pontificating on what the grid should be.

    10. Re: Night by jklovanc · · Score: 1

      Look at http://www.ambri.com/technolog... [ambri.com] American made. Cheap and effective.

      "Cheap" is a relative term. It is interesting that nowhere in their site is a actual cost of an installation.

    11. Re:Night by itzly · · Score: 2

      I agree completely but few people are working on storage as it is not sexy. They are content with pointing the finger at conventional plants and saying they will handle it. Sorry but the cost of power from conventional plants will rise if they only produce at night.

      Right now, we need less energy at night, so it's not a problem if there's less generated. And as long as solar doesn't cover 100% of daytime use, the same plants also need to run during the day. It's not a huge deal. We can also do a lot more with dynamic real-time pricing, so there will be financial incentive to move consumption around to peak production time. People can put their electric cars on the grid, and buy energy when it's cheap, and sell it back when it's expensive, and make a little bit of profit on the side.

    12. Re:Night by jklovanc · · Score: 3, Informative

      You sell any daytime excess back to the grid during the day, and draw back at night

      You make it seem that the same energy that you sell during the day is bought back at night. That is not true. The electricity you sold during the day is used during the day and reduces the production requirements for conventional electricity produces. The electricity you buy at night is produced by those conventional producers. Someone still has to produce the tlectricity you use at night and it will not be another PV user because it will probably be night there too.

      see also Tesla's new home battery pack stuff?

      Lets install a $20,000 battery in a house and replace it every ten years.

      It's odd how it seems like most posters are trying to find problems rather than trying to find solutions.

      It's odd how it seems that some people solve 50% of the problem and leave the other 50% to other people to solve. There are solution and the main one being storage. There is too much emphasis on electricity production technology and not enough on storage.

      It's almost like you don't want solar power, when 'solar' is one of the things California has so much of.

      The problem is that California has almost no "solar" at night and little is being done to compensate for that. It does not matter if 4x the required energy is produced by solar if only a very little of it is available at night.

      The article makes it look like solar is the solution to the energy problem. It is part of the solution but more work on storage needs to be done.

    13. Re:Night by mjgday · · Score: 1

      It is cheaper, and more optimal electrically, to sell the power to the grid and then buy it back from another generator when you aren't generating

      It is even cheaper and more optimal electrically, if your electric utility owns the solar panels and sells you the electricity from them when you need it.

      The ownership of the panels barely affects their electrical function, I suppose there might be some efficiencies of scale if the utility own all the panels on all the roofs in the street and can wire them all up to one big inverter. But as big inverters tend to be made up of lots of small inverters I'm not even sure if this is true.

      There does tend to be an ownership issue with roofspace tho, there are some companies who rent roofspace from individuals install PV and then profit from being the middleman, but that tends to be less financially rewarding for the roof owner and as the capital investment for a small (~4kW peak) system is relatively low (~$8k I'd guess) it's not a model that's often used. The utility very infrequently owns power stations, even the big ones, they tend to be owned by private enterprise and then trade electricity to the utility, or at least that's how it is here in .uk

      --
      foo
    14. Re:Night by itzly · · Score: 1

      Lets install a $20,000 battery in a house and replace it every ten years.

      And lets add a set of wheels and a roof, so we drive the battery around during the day. Sounds like a good plan.

      It's odd how it seems that some people solve 50% of the problem and leave the other 50% to other people to solve

      That's not odd, that's efficient. Intel wants to make smaller and smaller chips, but only solves 50% of the problems. They let ASML and other companies solve the other 50%.

    15. Re:Night by Firethorn · · Score: 3, Insightful

      Lets install a $20,000 battery in a house and replace it every ten years.

      How about you buy a ~$3k '70%' used EV battery, then use it for ~10 years until it gets to 30% or so, at which point you finally send it to the recyclers before buying a new one?

      Of course, that would entail both a massively increased number of strong EVs to supply the 'retired' batteries, and probably so much solar that you're encouraged to charge at work when the sun's out.

      --
      I don't read AC A human right
    16. Re:Night by blindseer · · Score: 1, Insightful

      It would also require more rare earth elements than exist in the earth's crust. Perhaps that is an exaggeration but not by much, mining enough lithium, cadmium, or whatever, is not trivial. We just do not have the capacity to produce that amount of electricity storage in batteries.

      I held out promise for technologies like flywheel storage as it was a simple technology, requiring not much more than a motor/generator and a weight. I then realized that such devices would be expensive, require considerable maintenance, and still require significant amounts of rare earth elements to produce.

      Other storage technologies have similar problems. Water storage requires differing elevations and, obviously, large amounts of water. Compressed air storage requires suitable caverns. Molten salt storage requires vast resources as well.

      None of these can compete with even first generation nuclear power, and we have fourth generation nuclear power coming on line soon.

      --
      I am armed because I am free. I am free because I am armed.
    17. Re:Night by jklovanc · · Score: 1

      And lets add a set of wheels and a roof, so we drive the battery around during the day. Sounds like a good plan.

      So it can be discharged when needed at night? Yeah, good plan.
      The problem is that the solar people think that solar solves the whole problem.

    18. Re:Night by FlyHelicopters · · Score: 1

      But the costs to mankind of not sorting the energy issue is likely higher, but far more difficult to express in monetary value.

      I actually happen to agree with you on this, but it doesn't matter because that isn't how human beings work...

      You're really asking John and Jane Q. Public to spend more of their money to solve "the world's problem".

      People just don't work like that.

    19. Re:Night by Anonymous Coward · · Score: 0

      radioisotopes are poison and the plants explode because people can't operate the plants safely. The nuclear age is over, wind is a safer, more stable investment.

    20. Re:Night by jklovanc · · Score: 2

      And as long as solar doesn't cover 100% of daytime use

      The article is touting how solar can produce 500% of daytime use. See the problem? Those conventional plant would have to ramp down and back up again. Ramping costs more than continuous operation.

      People can put their electric cars on the grid, and buy energy when it's cheap

      That sounds great until you go to drive your car and it is drained.

    21. Re:Night by jklovanc · · Score: 1

      What if the electricity is not produced when you need it?

    22. Re:Night by AmiMoJo · · Score: 3, Insightful

      Grid scale sodium sulphur batteries are already deployed at multiple sites around the world, especially in Japan and Hawaii. The only rare elements are in the control electronics, they last much longer than lithium and are easy to recycle.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    23. Re:Night by gbjbaanb · · Score: 1

      I agree dynamic real time pricing would be 'teh win' if combined with smart plugs to use electricity when its cheap, so you'd put your washing in and the meter will run the washing machine when electricity is at its cheapest during the day, much like how we run storage heaters during the night when the price of electricity drops to the 'economy 7' rate.

      Getting people to understand this is important, econony 7 is easy to understand, dynamic pricing needs good monitoring and reporting to make it work for the majority.

    24. Re:Night by Anonymous Coward · · Score: 0

      People can put their electric cars on the grid, and buy energy when it's cheap

      That sounds great until you go to drive your car and it is drained.

      You are assuming most people are useful. In the future, people will be useful purely for making babies so that one in a billion babies might grow up to think of something new and useful while the rest of us sit around and watch porn and being served by robots. Most people don't need jobs or to go anywhere. Just give them their credits for food, electricity and entertainment and make a box to keep them in.

    25. Re:Night by angel'o'sphere · · Score: 2

      Storage is today's big issue in the energy world.
      No, it is not. It is only relevant for "off grid" situations like on a boat/ship, or if you really want to have your house/flat "off grid".

      For the grid and large scale energy production, storage becomes relevant when you actually have situations where it is economically interesting to use stored energy ... that is not going to happen unless you produce minimum 50% of your power with renewables. And then you can at max store like 5% - 10% so economically it is very likely not feasible. You rather accept that you waste that few percentages.

      On the other hand, you can try to organize a market and transport capabilities, so you can simply sell the excess power.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    26. Re:Night by angel'o'sphere · · Score: 2

      Lead acid batteries have long been known to be a poor solution to store large amounts of electricity.
      And since long, decades I think, they are replaced by lead + gel batteries.

      The cost of storage will always be high as the costs include the following
      Pretty irrelevant when you need storage to run the grid. E.g. pumped storage is like 10% of total production in energy storage and power production. (GWh and GW). 5% you need minimum for a modern grid, otherwise you have to run with overproduction and use resistors to burn off excess energy (excess energy your ordinary heat based plants produce because they can not follow load down fast enough).

      Both of these technologies need very specific conditions
      Nope, for a pumped storage plant you only need a pool of water and a pipe and a pump/turbine that is lower than the water level. Ofc, it is sexier if the pool is on a 300m high hill top and your pump/turbine at the base. But having just 10m would be enough to have a running pumped storage plant.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    27. Re:Night by angel'o'sphere · · Score: 2

      Those conventional plant would have to ramp down and back up again. Ramping costs more than continuous operation.
      Ever looked at the load curve of your country?

      Conventional plants have to ramp up anyway around dawn and ramp down anyway shortly after dusk.

      Neither for the plants nor the operators it is a difference, only the moment in time changes if you add solar power to the mix.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    28. Re:Night by angel'o'sphere · · Score: 4, Insightful

      It would also require more rare earth elements than exist in the earth's crust.
      That is complete nonsense.
      http://en.wikipedia.org/wiki/R...

      Raw earth elements belong to the most abundant elements on earth. Only the name is strange due to historical reasons when they got "discovered".

      like flywheel storage ..., and still require significant amounts of rare earth elements to produce
      No they don't. You only need a flywheel and a generator. If you sacrifice 1% efficiency there are no raw earth elements involved at all. (*facepalm*)

      Molten salt storage requires vast resources as well.
      What a nonsense :D

      None of these can compete with even first generation nuclear power
      Ofc it can't. You compare storage technology with power production. That is like comparing biodiesel with a motorbike. Wow, the motorbike is not even using diesle. So now you compare the motorbike with gasoline ... oki. Nevertheless the gasoline/diesel is the storage medium. And the bike the user/producer of energy.

      Your comparison makes no sense, especially as nuclear power is the most expensive power to produce, since ever actually. It never was cheaper than coal, water or anything else.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    29. Re:Night by Anonymous Coward · · Score: 1

      I know it's been stated many times before, but maybe you didn't get the memo. Most rare-earth minerals are not rare at all. They are spread out quit a bit, but not rare. And we have tons of capacity to mine them in the US, with one of the worlds largest mines in California. It was shut down when China ramped up production and lowered the cost, but I believe they plan to bring it back into production (or maybe already have) when prices rise.

    30. Re:Night by angel'o'sphere · · Score: 1

      Why do you always bring up this nonsense argument?
      AFAIK California will still have its conventional plants, even when they produce 100% of the daytime need by solar energy.
      So?

      Again: to have energy left over to store for night, they need not only to produce 100% of the daytime use by PV but like 150%.

      In other words: as long as solar power production is far from 100% storage is not needed and is meaningless.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    31. Re:Night by dave420 · · Score: 1

      Then the problem lies with people being so short-sighted and selfish that they don't realise the problem is their problem, and them sticking their heads in the sand only makes the problem worse for either them or those who follow.

      He's simply asking John and Jane Q. Public to think. A lot to ask, I know.

    32. Re:Night by serviscope_minor · · Score: 1

      Nope, for a pumped storage plant you only need a pool of water and a pipe and a pump/turbine that is lower than the water level. Ofc, it is sexier if the pool is on a 300m high hill top and your pump/turbine at the base. But having just 10m would be enough to have a running pumped storage plant.

      I'm not sure it would.

      Taking e = m g h

      if you pump let's say 100 cubic meters of water up by 10m, that gives you 100 * 1000 * 10 * 10 = 1e7 joules = 2.7 kWh, more like 2kWh after losses. That will store an average of 1/3 of a day's worth of energy.

      You now need to build something capable of supporting 100 tons 10 meters off the ground.

      It's possible: you could build a house which was flat "roofed" and designed to essentially support a 1m deep pool on the roof, but it's not that easy to do and requires rebuilding houses. Once you're doing that, you could probably do as well or better by desigining ones which run much better passively.

      --
      SJW n. One who posts facts.
    33. Re:Night by dave420 · · Score: 1

      No, you park it and charge it. People aren't driving their cars around the whole time.

      Solar people think solar can help massively, that's it. They're not saying it's the whole solution, as while this planet is not tidally locked with the sun, it clearly can only be part of the system.

      You seem to think that because solar doesn't instantly solve every single problem that it's some sort of rubbish nonsense fad which deserves scorn. I apologise if that is incorrect, but that's definitely how your endless stream of breathless comments make it seem. If that's not the case, you might want to work on your posting style ;)

    34. Re:Night by Anonymous Coward · · Score: 0

      It astounds me that MSRs get so little attention!

    35. Re:Night by Anonymous Coward · · Score: 0

      Lithium has a very low atomic number (3), so it is very abundant on Earth, in the top 25. While it does not have elemental deposits, there is certainly never going to be a shortage of it.

      dom

    36. Re:Night by Anonymous Coward · · Score: 0

      It would also require more rare earth elements than exist in the earth's crust. Perhaps that is an exaggeration but not by much, mining enough lithium, cadmium, or whatever, is not trivial.

      Lithium and cadmium are not rare earth elements.

    37. Re:Night by FlyHelicopters · · Score: 1

      Yes, that is all true... but that is human nature, we are not, as a general rule, as "smart" as we all think we are...

    38. Re:Night by FlyHelicopters · · Score: 1

      Actually no, they generally don't...

      Large base load plants generally run at 100% all the time, it is expensive to run them any other way.

      Smaller gas turbines are used to make up the peak demand load.

    39. Re:Night by Firethorn · · Score: 1

      It would also require more rare earth elements than exist in the earth's crust. Perhaps that is an exaggeration but not by much, mining enough lithium, cadmium, or whatever, is not trivial.

      Lithium is the 33rd most common substance in the Earth's crust.

      It's very evenly distributed, on average, so it's a bit of a pain to refine, but it's also 100% recyclable.

      None of these can compete with even first generation nuclear power, and we have fourth generation nuclear power coming on line soon.

      Now expanding nuclear power I also agree with. I just find the solar stuff interesting as well. You put a few solar panels on most roofs and you can satisfy daytime demand increases, mostly at point of use, so you don't need to build the grid up as much. Then you have nuclear power to provide the baseload night power.

      --
      I don't read AC A human right
    40. Re:Night by jklovanc · · Score: 1

      The article touts producing 500% of daytime need. See the problem with the "solution"?

    41. Re:Night by jklovanc · · Score: 1

      No, you park it and charge it.

      There are a very limited number of charging stations available and new ones are expensive to install.

      You seem to think that because solar doesn't instantly solve every single problem that it's some sort of rubbish nonsense fad which deserves scorn.

      No, I think that articles concentrating only on production numbers for solar hide the issues involved with utilizing solar. Solar + storage is a solution but because solar production is so sexy, storage is falling behind. They also rarely add the cost of storage into the solar costs and therefore skew any comparison with conventional production.

    42. Re:Night by blindseer · · Score: 1

      To all of those that posted doubting my math that we don't have enough material in the world to make a nation sized storage battery:
      http://physics.ucsd.edu/do-the...

      To all those hating on my "rare earth" comments, my fingers jumped ahead on my thoughts about the battery when I meant the comment on rare earths only for the magnets in the flywheel motors. No rare earths metals in the batteries. Will need gobs of rare earth metals for efficient flywheel storage.

      If you dispute the need for rare earth metals in the flywheels then so be it. With the earth's core made of nickel and iron it's quite likely we won't run out of those elements to make flywheel storage work. Problem still lies in the cost of producing the flywheels. Efficiency gains can be made in using the densest materials we can find in creating these flywheels. What elements in the earth's crust is abundant and dense? The top two on my list would be tungsten and... uranium. If we are going to mine uranium then why waste it in making an energy storage flywheel if we can use it as an energy source?

      I thought you people cared about preserving the environment. You'd rather be digging up all kinds of lead for huge batteries, or steel for flywheels, than just get a little bit of thorium and uranium for a nuclear reactor. Shame on those of you suggesting pumped hydro, do you not feel for the delta smelt?

      The way I see it solar and wind are environmental disasters just waiting to happen. They will kill birds in flight, disturb the landscape, poison the water, and I haven't even got to all the mining needed for the materials required yet. Solar and wind don't sound so "green" any more, do they?

      --
      I am armed because I am free. I am free because I am armed.
    43. Re:Night by angel'o'sphere · · Score: 1

      Base load plant usually run at 90%

      Gas turbines are not necessarily "smaller", they usually are quite powerful as well.

      What you mean is "balancing power" not "peak demand load", that term does not exist.

      The main load is delivered by "mid range" load following plants, not by base load nor by "peak" plants.

      So yes, they need time to ramp up.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    44. Re:Night by angel'o'sphere · · Score: 1

      You would make an artificial hill for that :D

      I doubt a "local" storage for pumped storage makes sense, as you in fact really need a lot of space and a lot of water, and a second basin "down hill".

      The point is: you don't really need a special area if you are ready to trade hight for area.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    45. Re:Night by angel'o'sphere · · Score: 1

      Daytime need of California? So the rest can be exported?

      The article became quickly very fluffy so I did not continue reading it. I was more talking about the general misconception that solar makes no sense without storage when in fact it makes a lot of sense.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    46. Re:Night by jklovanc · · Score: 1

      So you didn't even read the headline of the article

      Deploying Solar In California's Urban Areas Could Meet Demand Five Times Over

      but are still commenting on it. Small amounts of solar are easy to integrate into the grid but large amounts cause issues. In this case their "study" was a running a few equations to come up with a number that makes solar look good. They fail to go any further than "how much can we produce?" and ignore the issue of when we need the electricity.

    47. Re: Night by einar.petersen · · Score: 1

      Agreed cheap is relative - I suppose they mean cheap as it is supposedly based on abundant earth materials rather than rare earth materials...

      --
      MS, ALS, Aphasia ? http://globability.org - Me http://einarpetersen.com
    48. Re:Night by angel'o'sphere · · Score: 1

      I read the headline, sorry, how do you come to that conclusion?

      I also read half the article, or two third ... sigh.

      So you are arguing about stuff which is not even in the article ... or how should I understand your post?

      The point is: they believe they only need the only already build over area to produce 5x the daytime use of California. As I said: the other topics in the article did not interest me as it had to many flaws/bad journalism. How you conclude that I did not read it is beyond me.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    49. Re:Night by jklovanc · · Score: 1

      The headline states the following;

      Deploying Solar In California's Urban Areas Could Meet Demand Five Times Over

      Then you state;

      as long as solar power production is far from 100% storage is not needed and is meaningless.

      Since five times is much more than 100% I don't see how you could have read the headline and made that statement.

      So you are arguing about stuff which is not even in the article

      Yes I am arguing stuff not in the article because the article does not show the whole picture. That causes solar to appear to be a simpler solution than it really is.

      It is my contention that the focus on large production number for solar is hiding the real issue with integrating solar into the grid which is storage. Is solar useless? No. Does high solar production need storage to shift supply to demand? Yes.

    50. Re:Night by angel'o'sphere · · Score: 1

      how you could have read the headline and made that statement.
      Because neither you nor other /. where talking about the 500% but repeatedly claim over and over again that solar/wind can not work at all unless (the non existing) storage problem is solved.

      It is my contention that the focus on large production number for solar is hiding the real issue with integrating solar into the grid which is storage. Is solar useless? No. Does high solar production need storage to shift supply to demand? Yes.
      Define large. 50% of peak? No, no storage _needed_. 75% of peak? Again: now storage might be usefull if you want to invest into it, needed: No.
      The point finally is: do you want to shift surplus supply to other demanding times, if you say "yes, you want that", then you need storage. But again: that has nothing to do with the fundamentals of the grid and how it works. For a grid to work you don't need significant more storage than any 'grid in good shape' already has.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    51. Re:Night by jklovanc · · Score: 1

      Because neither you nor other /. where talking about the 500%

      Read the third post in this thread

      The article touts producing 500% of daytime need. See the problem with the "solution"?

      For a grid to work you don't need significant more storage than any 'grid in good shape' already has.

      Ever seen the duck graph. Basically it shows how the drop off in solar near sunset can cause a requirement for very rapid switching to conventional power. Conventional generators have a limit on how fast they can ramp up. If the conventional plants can not ramp fast enough the grid collapses. Storage can extend this ramping period so that it is not so steep and conventional plants can handle it.

  6. Re:But even if they had enough power... by Anonymous Coward · · Score: 0

    And on a more serious note, why hasn't California tried getting water from the ocean? I heard they were going to run out of the stuff in less than a year.

    Because if it wasn't for the last minute, nothing would ever be done!

  7. Re:But even if they had enough power... by gringofrijolero · · Score: 1

    And on a more serious note, why hasn't California tried getting water from the ocean?

    Profit margins are too low, and you know, politics. It's something only the state can do. And it would pay off extremely well.

    --
    Todos mis movimientos están friamente calculados
  8. Re:Without workers power by Anonymous Coward · · Score: 3, Insightful

    What brand of socialism though? The wunderkind society that resulted from the USSR? Maybe North korean style Kim Il Sung worship is more your style? Maybe the economic wasteland that is cuba? I know, the 'people's republic' of china must be your thing as they've got excellent track records in things like civil rights, quality of life, and relative equity. Oh wait, that's right, none of these societies ever got close to that of the united states, never mind some promise of utopia. In fact, their political policies reenforced inequity, to the point of having two currencies in the case of the USSR. Guess which currency the average worker got paid for his labor? (hint: it wasn't the one that was worth anything on the market)

    You'd think the political squabbles of the 20th century would make people realize how dangerous ideologies like this are to sustainable societies, never mind free ones. None of them were meant to help the common man, they were meant to keep the elite in power.

  9. Dear Californians by einar.petersen · · Score: 1

    What are you waiting for. This is your opportunity to completely transform your state and become energy independent leading the way for a greener and cleaner America and even a chance to make a buck og two in the process by selling off your excess power production... Talk to people in your neighbourhood pool your resources that way you don't need to wait for incompetent politicians working for the lobbyists or greedy power companies out to take your rightful chance to make an earning from you. Best of luck you don't just have a window of opportunity... you have the barn door open right now!

    --
    MS, ALS, Aphasia ? http://globability.org - Me http://einarpetersen.com
    1. Re:Dear Californians by Anonymous Coward · · Score: 0

      Obama is only worse than Bush because so very much more was expected of him.

      Obama would have been a good Republican president during the Clinton years (if he weren't visibly black), but that's not what you want a democratic president to be.

      Same problem here in the UK: we've forgotten that the point of the adversarial two-party system is that the party in power makes predictions on how things will go right, because their mindset is for whatever they are pushing (private business or social programmes), the opposition are of the opposite mindset outlook and come up with how all the things can go wrong. The party in power then fixes the problems, abandons them as unworkable, or does its best and pushes them through anyway. But even in the latter case, they'll be better thought out than if the opposition was not there.

      However, it's now that both parties are of the same mindset: saying they're social, acting like they're private business paid. And any idea that gets through has never had critical thought applied.

      Obama isn't worse than Shrub by any means at all. Not even close. But after Shrub, we expected some actual leadership, for which Obama (listening to the Washington echo chamber) failed entirely. If Shrub had been this bad, he would have been a lot better than he was. Obama should have been better than this, so the expectation makes you wonder if Obama is worse than Shrub.

      He's not, but a random person off the street would have been no worse, and he was supposed to be better.

    2. Re:Dear Californians by Anonymous Coward · · Score: 0

      > starting to
      How did you not realize this after the first 4 years?
      Kekekeke.

    3. Re:Dear Californians by Anonymous Coward · · Score: 0

      This is California you're talking about, they have a bunch of greens but they're offset with plenty of self-centered and short-sighted flakes and nuts. We don't call it "granola land" for nothing.

  10. A quick calculation of the cost... by DrTJ · · Score: 1

    A standard solar panel (like http://www.wholesalesolar.com/...) is about $150/m^2.

    The size of California: 423 000 km^2. One-fifth of 8% of that, to meet the current need, is about 6768 km^2.

    At $150/m^2, that would be approximately $1E12. That's [only] $26 000 per citizen. Start the haggle!

    1. Re:A quick calculation of the cost... by Crashmarik · · Score: 1

      You win the internet common sense award sir. Count yourself head and shoulders above the people in this thread who were willing to swallow this hook line and sinker and start forcing the people of California to implement this yesterday.

    2. Re:A quick calculation of the cost... by itzly · · Score: 4, Funny

      I'm sure you can get a discount on a $1e12 order.

    3. Re:A quick calculation of the cost... by Anonymous Coward · · Score: 0

      He did, that's with free grid build out, tie in and energy storage.

    4. Re:A quick calculation of the cost... by Anonymous Coward · · Score: 0

      You like math? Me too!

      At 300W per m^2, let's say it works for 8hrs/day, and 15c per KwH (Cali rate), each square meter can produce about 36 cents of electricity every day! Those panels will produce 2.4B$ of electricity... every day!

      Payback in three years!

    5. Re:A quick calculation of the cost... by mrchaotica · · Score: 1

      At $150/m^2, that would be approximately $1E12. That's [only] $26 000 per citizen.

      And your point is...?

      Keep in mind, those citizens are driving around cars that cost $26,000 (when new). They're living in buildings that cost much more than $26,000 per resident to build. They're driving around on a road network that I'm pretty sure cost more than $1E12 (in 2015 dollars) to build.

      The point is that while $26,000 per person isn't cheap, it isn't insurmountably expensive either, especially when you consider spreading that cost over the life of the equipment.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    6. Re:A quick calculation of the cost... by Anonymous Coward · · Score: 0

      If they last for 25 years, that's only about $1,040 per citizen per year -- less than a hundo per month. My last electric bill in LA was closer to $300 than $100.

  11. Re: Without workers power by Anonymous Coward · · Score: 0

    Of course you are correct because there can't possible any corruption in your little utopia of socialism right?

  12. Re: Without workers power by Anonymous Coward · · Score: 4, Informative

    Calling any party/politcian from the US as socialist when they don't even have true single payer universal healthcare is just laughable. Our right wing parties in Europe are more socialist than Obama or the Democratic party of the USA.

  13. Re: Without workers power by Anonymous Coward · · Score: 0

    "None of them were meant to help the common man, they were meant to keep the elite in power."

    And therefore none of them were socialist.

    If you want socialist, look at Scandanavian countries. And most of them are doibg far better in average quality of life than the USA.

  14. Disused land by Anonymous Coward · · Score: 0

    I was driving through Orlando recently and I was amazed by the amount of disused land - stores which had gone out of business and so on. In front of these stores were very large parking lots which were doing nothing but growing weeds. It struck me that if solar panels were mounted onto trailers that you could simply drive them to such a vacant spot, park them and feed the power straight into the grid.

    If the laws were friendly to such use - requiring vacant lots to be used for this purpose etc. then it's not hard to see businesses springing up to make use of it. The biggest issue is what to do with the surplus but there are answers to that too

    1. Re:Disused land by Anonymous Coward · · Score: 0

      You think the kind of economy that has weeds in parking lots and empty stores is going to pay for installing solar panels?

      Only a leisure society with survival decoupled from work, since anything useful is mostly amplified by machines now, would allow that.

      But since we cling to a 7th century do or die mentality, well, die.

  15. But what does it look like? by Anonymous Coward · · Score: 1

    When housing associations, communities and local government care more that your lawn is green than preserving water because there is a drought, what chance do people have in making serious use of solar energy by putting panels on the roof of their house?

    Reference: http://www.nbclosangeles.com/news/local/Fernand-Bogman-Upland-Drought-Lawn-Crime-283507091.html

    I'm sure that utilities will lobby local governments to try and limit what sort of impact solar panels can have if it becomes clear they will be a threat.

    1. Re:But what does it look like? by Bob+the+Super+Hamste · · Score: 1

      When housing associations, communities and local government care more that your lawn is green than preserving water because there is a drought

      And that is why while I am annoyed that my city mandates grass lawns, I am glad that they don't require them to be green. I will let it go dormant in the hottest and driest parts of the summer, but I will water my trees as watering them is cheaper than paying to have them removed, and even then I only water them after the sun has gone down so it is cooler with less evaporation. The HOA on the other side of the park can piss off since they seem to believe that they have a say over everything they can see.

      --
      Time to offend someone
    2. Re:But what does it look like? by PPH · · Score: 1

      This.

      It took years for building and fire codes to overrule homeowners association rules that required wood shake roofs in high risk fire zones.

      --
      Have gnu, will travel.
  16. And yet by Anonymous Coward · · Score: 0

    I'd bet the more delusional Space Nutters will still try to convince us (and themselves, mostly) that space-based solar ever made any sense...

  17. Re: Without workers power by Anonymous Coward · · Score: 0

    Nuh uh! It's the republicans fault! Next democrat won't do anything evil!

  18. Re: Without workers power by Anonymous Coward · · Score: 0

    Nuh uh! It's the democrats fault! Next republican won't do anything evil!

  19. Solar car ports on wheels? by Firethorn · · Score: 1

    Your post almost sounds like an advertisement...

    Anyways, I dislike the idea of having the solar roofs be on wheels for a couple reasons:
      Wind Resistance. If you don't have it anchored down, wind(or thieves) can spirit it away much easier.
      Power connection - should be permanent.

    Basically, unless the wheels are a lot more robust than what I'm picturing, you'd have to 'roll it inside' for severe weather, which I'd really prefer to avoid.

    --
    I don't read AC A human right
    1. Re:Solar car ports on wheels? by einar.petersen · · Score: 1

      Heh... I wish I had stakes in such a company - but alas... Notice I did not include a company name nor URL, which I would have if I was advertising. No I just wanted to mention that you actually in my opinion have a sound idea about space usage and that someone else has thought like you and has attempted to implement the idea... The severe weather thing I believe you might be right about for the wheeled parking lot units I saw.

      --
      MS, ALS, Aphasia ? http://globability.org - Me http://einarpetersen.com
  20. solar and wind are just proxies for natural gas by blindseer · · Score: 1, Informative

    This study claims a reduction in carbon emissions from solar power but I've read studies that show increased carbon emissions from solar power. Why is that? Because solar power is very poor at matching when people use power. Sure, people tend to turn stuff off at night when the sun is down and turn them on when the sun shines but the load curve seen by utilities shows a peek power usage at about 6:00PM, when the sun is setting and solar power has already begun to wane.

    How does this translate into increased carbon output? When solar power wanes there needs to be a power source that can be brought up to power quickly and still be inexpensive enough that it is economical. That is where natural gas comes in. Instead of using highly efficient combined cycle power, which takes hours to come up to power, the utilities use natural gas turbines. Combined cycle power plants get about 60% efficiency, gas turbine power plants might get 40%. Turning the turbines off and on burns more fuel, reducing the effective efficiency.

    So rather than using a highly efficient combined cycle power plant a utility that must accommodate the quickly changing output of solar power must use less efficient gas turbines. The more solar power on the grid means more gas turbines. More gas turbines means less efficient use of natural gas. Therefore there is no net reduction of carbon emissions from use of solar power.

    Then comes the argument for storing the solar energy for use when the sun does not shine. That adds cost. We have nothing that can store electricity that is cheaper than burning natural gas or coal, using nuclear power, or using hydro power. If solar power is to become cheap enough to compete with coal and nuclear then we need a means to store electricity that is cheap.

    The problem then comes in that any technology that makes storing electric energy cheap also makes coal and nuclear power cheaper. Then why not just make solar power cheaper? Because that will never solve the problem of the sun going down.

    Solar power is a dead end. Solar power would have to be cheap enough to make up for the costs of its manufacture and storage as well as compete with coal and nuclear. While we might run out of coal in 300 years we just cannot run out of nuclear fuel, it is just too common.

    Then there is the environment disaster that is caused by the manufacture of photovoltaic panels. Making them requires significant amounts of water, toxic chemicals, and lots of energy.

    Solar power is not the answer. Nuclear power is the answer. I know someone is going to point out the nuclear waste that comes from nuclear power now. My answer to that is Waste Annihilating Molten Salt Reactors. These things eat radioactive waste. If it is radioactive then it is fuel. If it's not radioactive then it's not waste any more, right?

    --
    I am armed because I am free. I am free because I am armed.
    1. Re:solar and wind are just proxies for natural gas by itzly · · Score: 1

      Solar power is a dead end.

      Not as dead as coal and gas.

      Nuclear power is the answer.

      Great. Now please convince the people of California to install a plant in their back yard.

    2. Re:solar and wind are just proxies for natural gas by blindseer · · Score: 0

      I believe I won't have to convince them of anything. They will come to the same conclusion eventually. They can have either nuclear power or rolling blackouts.

      --
      I am armed because I am free. I am free because I am armed.
    3. Re:solar and wind are just proxies for natural gas by Anonymous Coward · · Score: 0

      well, I'd quit worrying. The governments of this world already have the answer.
      The very man who gave us alternating current, saw it as a stepping stone to where he was going.
      He actually had demonstrated wireless power, and could provide current for massive loads if he chose.
      That's Nikola Tesla for you.
      He gave us the magnifying transmitter - and we've never put it to use.
      If we ignore the Electric Universe altogether, we'd still have a global solution, as the sun always shines of half the world, and this system could power the whole world without wires.
      So why don't we use it? Easy. Corporations can't cut you off from the supply if you refuse to pay.
      The real question then, is how to we remove the blockages from society that inhibit such technologies coming forwards?

    4. Re:solar and wind are just proxies for natural gas by Anonymous Coward · · Score: 0

      Or build coal power plants and let the emissions drift inland and become someone else's problem.

    5. Re:solar and wind are just proxies for natural gas by Anonymous Coward · · Score: 0

      FTFY. I doubt you have ever contributed to democracy based on that assumption. You think your guns make you free, when all you are doing is cowering behind a peice of metal. If you haven't exercized your freedom of speech by writing to politicians to repeal anything other than guns laws then you are also a hypocrite. Your sig should read:

      I am armed because I am afraid. I am afraid because I am armed.

    6. Re:solar and wind are just proxies for natural gas by kesuki · · Score: 1

      i thought they built a iron fusion reactor, only risk is the world has so much iron that it might all spontaneously fuse and destroy the earth and all life on it. actually i'm kidding thats from a scifi story!

    7. Re:solar and wind are just proxies for natural gas by Anonymous Coward · · Score: 0

      warning innorance alert. This just in. Earth spins at known rate. IGCC plant can ramp up and down on solar schedule, with an effective efficiency exceeding 50%,. News flash: modules are cheap enough to orient them to reduce "duck" problems rather than maximize annual output. Newsflash: these stupid roadblocks to massive solar adaptation are not really problems, they are genuinely or disingenuously proposed by people with alternative interests. And they fucking crumble one by one, year after year.

    8. Re:solar and wind are just proxies for natural gas by catmistake · · Score: 4, Insightful

      Nuclear power is the answer. I know someone is going to point out the nuclear waste that comes from nuclear power now.

      Yes, waste is a concern. But the real concern is the economics of nuclear energy has never made any sense. It is outrageously expensive, and never has a nuclear power plant been able to have been built without massive capital from governments. An individual can install wind and solar and other alternative energies on a local scale. There are solvable problems involved. Eventually, the problem of energy storage will be solved. But the problem with nuclear power, which is that is the most expensive form of energy ever conceived, will never be solved. Nuclear energy proponents ignore this, but it is the only thing standing in the way of your dream of nuclear power being the solution to the world's energy needs: its just too damn expensive. Money wins every time.

    9. Re:solar and wind are just proxies for natural gas by AmiMoJo · · Score: 3, Insightful

      The more solar power on the grid means more gas turbines.

      Only in the US where gas is cheap due to fracking. In Germany they have closed older coal plants and replaced them with newer, cleaner ones that can ramp their output up quickly to support solar. Those coal plants use carbon capture so are actually quite low on CO2 emissions.

      The problem then comes in that any technology that makes storing electric energy cheap also makes coal and nuclear power cheaper. Then why not just make solar power cheaper? Because that will never solve the problem of the sun going down.

      Um... So if storing electricity were cheap, that wouldn't solve the problem of solar only being available during daylight?

      Also, coal and nuclear are not cheap at all. Coal looks cheap until you include all the externalized costs. Nuclear is just damn expensive from any angle.

      My answer to that is Waste Annihilating Molten Salt Reactors.

      Unfortunately no-one with the tens of billions of dollars needed to build a commercial molten salt reactor is willing to give you any. Something about the way all molten salt reactors built so far had severe problems and don't look like commercially viable technology must be putting them off.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    10. Re:solar and wind are just proxies for natural gas by angel'o'sphere · · Score: 1

      Great. Now please convince the people of California to install a plant in their back yard.

      Can't be that hard! Isn't Nevada the back yard of California?

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    11. Re:solar and wind are just proxies for natural gas by angel'o'sphere · · Score: 1

      That is where natural gas comes in. Instead of using highly efficient combined cycle power, which takes hours to come up to power, the utilities use natural gas turbines. Combined cycle power plants get about 60% efficiency, gas turbine power plants might get 40%. Turning the turbines off and on burns more fuel, reducing the effective efficiency.
      (*facepalm*)
      A combined cycle gas plant is a gas turbine combined with a classical boiler.

      The more solar power on the grid means more gas turbines.
      No, it does not mean that. As "jklovanc" pointed out in another thread a few days ago, gas turbines in the USA have a capacity factor of 30% (wow, the first time I find a usage for that metric), that means they are 70% of the time: not used. Hence you don't need more of them.

      The whole argument makes no sense anyway. Right now you burn coal, and balance it with gas turbines. Replace coal with solar and then you need "more" gas turbines? How retarded is that idea? And on top of that you claim those gas turbines would produce more CO2 than the coal that was replaced with Solar? Sorry, you are an idiot!

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    12. Re:solar and wind are just proxies for natural gas by Anonymous Coward · · Score: 0

      Up with LFTRs!!

    13. Re:solar and wind are just proxies for natural gas by Anonymous Coward · · Score: 0

      " But the problem with nuclear power, which is that is the most expensive form of energy ever conceived"

      That turns out not to be the case!

    14. Re:solar and wind are just proxies for natural gas by blindseer · · Score: 1

      Let's do this math here. Nuclear power is the most hated power source in existence. Nuclear power requires massive government subsidies to survive. After all of that it is still the most expensive energy source we have. So, explain to me why we have not shut them all down already?

      Money wins every time.

      That's right, money wins every time. The only way a nuclear power plant can survive the onslaught of demands to be shut down is because they make gobs of money. Nuclear power provides something like 20% of the electricity consumed in the USA. If we shut them all down we simply could not produce enough windmills and solar panels to make up for that.

      Why haven't solar and wind power replaced nuclear power already? Because money wins every time. Solar is, at best, three times the cost of nuclear. Wind costs about double.

      If you want to talk about government funds in nuclear power then we'd have to talk about all the money the government has put into solar. That money has been piled on and it still cannot compete with nuclear.

      --
      I am armed because I am free. I am free because I am armed.
    15. Re:solar and wind are just proxies for natural gas by catmistake · · Score: 1

      The math is very clear. What isn't clear to you is the history of nuclear power. The only reason the US invested so much in nuclear power in the 1950s is because someone massively overestimated the need for fuel for bombs. A single plant could have produced enough fuel for nuclear weapons, yet we built 110 or so of them. It really isn't fair to ask why solar hasn't quiet yet overtaken nuclear because of the massive investment in nuclear from 1940-1970. Had a fraction of the capital invested in nuclear been diverted to solar R&D in the 1950's, you better believe solar would be everywhere you could imagine now, and cheaper than spit. Only since the call for alternative energies has commercial interests taken up development of solar power. In the last 10 years alone, there have been massive advances in solar manufacturing processes and the efficiency of photovoltaics. Give it 10 more years, and nuclear will be a joke, unable to compete with solar, which is very nearly at cost of energy parity right now. Solar isn't perfect, and is no free lunch. But it is simpler, available to anyone and not just rich governments to implement, and as I said, in very short order solar generated energy will be cheaper than nuclear generated energy.

    16. Re:solar and wind are just proxies for natural gas by david_thornley · · Score: 1

      Are you trying to tell us that power companies were expected to produce weapons-grade plutonium? And that we overbuilt by two orders of magnitude? And that either solar works at night, or nuclear works only in the daytime?

      --
      "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes
    17. Re:solar and wind are just proxies for natural gas by blindseer · · Score: 1

      You are talking about what solar might be able to do in ten years. That's nice, but I suggest we talk about now. Right now we have second and third generation nuclear reactors which can burn uranium at an efficiency of 0.5%. With that terrible performance nuclear already has, compared to solar power, lower carbon output, longer operation lifespans, shorter energy payback, and lower costs at the meter.

      Now I'll talk about what can happen in ten years. Solar panels might be able to go from the 10 to 20% efficiency to perhaps 40%. Theoretical limits place photovoltaic panels at 60% or so. A heat engine that runs from solar power has a theoretical efficiency of 95% but real world efficiency would be more like somewhere between 20% and 60%, not far from where they are now. So, we can expect a gain of efficiency that is double to triple of what we have now, given more time we might get a quadruple gain.

      Nuclear power now takes 0.5% of the fuel, boils water, and runs a heat engine with an efficiency of about 20% to 30%, more advanced reactors that are currently operating may get as high as 40%. Fourth generation nuclear reactors like WAMSR (waste annihilating molten salt reactors) and LFTR (liquid fluoride thorium reactors) burn 99% of the fuel. They do not boil water but instead use carrier salt and gas turbines, allowing the use of temperatures and technologies capable of 60% efficiency. This translates to an efficiency that is merely double to an efficiency that is 1000x what we have now, depending on how one defines efficiency.

      Then there is the matter that nuclear power works in all weather, at all altitudes and latitudes, day or night, with an operational up time of about 85%. For solar to compete with that on cost requires material technology developments, and energy storage developments, far beyond what we have now. These same technologies would also benefit nuclear power.

      You can place your bet on solar power but I won't.

      --
      I am armed because I am free. I am free because I am armed.
  21. Re:Without workers power by Z80a · · Score: 1

    As soon you join a large enough group of humans, this group automatically morphs into an horrible monster that tries to take advantage of everyone else, and the only way to stop it is to pit it against another monster, thus forcing both to make concessions that benefit the mere mortals to thrive.

    The capitalism start to fail as soon you get the right to buy yourself a monopoly, and socialism is basically "everything is a monopoly from the get go", so not good idea at all.
     

  22. Idiot... by Anonymous Coward · · Score: 0

    Why do you think they'd need to cover 1/5th of California? Urban area cover (rooftops). 1/5th of THAT would meet demands.

    How much of California is rooftop. Not how much ground area is California.

  23. Yes, it does help California. by Anonymous Coward · · Score: 1

    They get power from other states using solar power when they haven't got any sunlight, and get to sell their power to other states when they have sunlight and the other state doesn't.

    So of course it helps California.

    1. Re:Yes, it does help California. by jklovanc · · Score: 2

      What state has sunlight at sunset in California? When California is having it's sunset issue the rest if the continental US is already dark.

    2. Re:Yes, it does help California. by morgauxo · · Score: 1

      Hawaii

    3. Re:Yes, it does help California. by jklovanc · · Score: 1

      Too bad Hawaii is not on the continent or part of the continental grid. You funny.

  24. Reading comprehension by Overzeetop · · Score: 2

    I quoteth the GP:

    423 000 km^2. One-fifth of 8% of that, to meet the current need, is about 6768 km^2

    The tip off that you misread was that 6,768 is nowhere near 1/5 of 423,000. This is the *low end* of their estimate.

    This was exactly the problem I had with the "solar road" crowdfunding boondoggle. Their end game of covering all the asphalted surfaces with their road panels came out to nearly a quadrillion dollars. And that was assuming they lowered the cost of their system - concrete sub-base, road prep, installation, component manufacture, and infrastructure - to about $125 per module (i.e. about $1/lb, installed).

    --
    Is it just my observation, or are there way too many stupid people in the world?
    1. Re:Reading comprehension by CrimsonAvenger · · Score: 1

      423 000 km^2. One-fifth of 8% of that, to meet the current need, is about 6768 km^2

      The tip off that you misread was that 6,768 is nowhere near 1/5 of 423,000. This is the *low end* of their estimate.

      1/5 of 8% of 423000. The 8% part is important....

      --

      "I do not agree with what you say, but I will defend to the death your right to say it"
  25. Re:Without workers power by Anonymous Coward · · Score: 0

    As soon you join a large enough group of humans, this group automatically morphs into an horrible monster that tries to take advantage of everyone else,

    If that has been your experience, then I kindly ask you to not join any further such groups of humans.

  26. Re:Without workers power by silentcoder · · Score: 1, Interesting

    How about the anarcho-socialist brand, or council-communism or part-econ - all of which basically do socialism without any state or government at all.
    Unlike, say, libertarianism at least one of those HAS actually been tried. Andalusia in Spain was anarcho socialist for about 20 years at the start of the 20th century, they were simultaneously at war with capitalists from the north and communists from the South. The capitalists hated their working socialism, the communists hated their working anarchism.

    But despite the costs of those wars they were extremely successful. George Orwell visited Andalusia and described it as "the most egalitarian society I have ever seen -as close to perfection as civilization has gotten".
    In many ways, it was Star Trek Next Generation without the science fiction - just done with the technology of a century ago, imagine what we could do with TODAY's technology ?

    It wasn't perfect and there were some problems though they were making good progress towards solving them and, had they not ultimately lost the wars after 20 years, they probably would have since their track record strongly suggests it.

    A key component was that the only kind of business they had were worker-owned cooperatives, but these cooperatives still competed in an open market. Worker-owned is all you need for the definition of "socialism" to apply, there is nothing that requires a state, or a government, or even the absence of markets.

    That model works surprisingly well - right now worker owned cooperatives in the USA include one of the biggest industrial bakeries in California, one of the leading manufacturers of robotics in Texas (yes, high-tech companies work well this way too) and the largest carpet-maker on earth.

    --
    Unicode killed the ASCII-art *
  27. Mind boggling numbers by Dereck1701 · · Score: 2

    Sounds great, few problems though. First off is cost, they're talking about placing solar panels across millions of square acres. I could have mistyped but from what I can figure (6.7M acres / 15 sqft solar panels) that would take a mind boggling number of solar panels, almost 20 Billion. At current rates that would cost somewhere in the neighborhood of $19 Trillion dollars. Secondly what do you do with all that power, you'll either have to build one heck of a grid storage system or fundamentally rethink how electricity is used, or a little of both. Our energy future will involve a mix of power if we have any sense, Some solar to take up the slack on those hot days, some fossil for peak loads or cloudy days and nuclear/coal/wind for baseload.

    1. Re:Mind boggling numbers by mrchaotica · · Score: 1

      I could have mistyped but from what I can figure (6.7M acres / 15 sqft solar panels) that would take a mind boggling number of solar panels, almost 20 Billion. At current rates that would cost somewhere in the neighborhood of $19 Trillion dollars.

      Somebody else calculated that it would cost $26,000 per person (which implies that your numbers are off by a few orders of magnitude). Lots of people spend more than that on their car.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    2. Re:Mind boggling numbers by Anonymous Coward · · Score: 0

      "$26,000 per person"

      I think someone in that same thread noted that they were using the studies low end numbers. Even using those numbers you're talking about one heck of an investment. $26k multiplied by 39 million Californians comes to a little over a trillion dollars, the state governments budget by the way is about $127 Billion per year. The entire states Gross State Product is 2.2 Trillion per year.

    3. Re:Mind boggling numbers by Anonymous Coward · · Score: 0

      Realistically it'd be a 15sqft panel for every acre, so like 5-10 million of them, not 20 billion. There'd still be roads and other equipment... trees, stuff like that in the way. You just did the math on building a dome.

      Starting with 1 million solar panels in such an area is probably the medium term goal here - if each one is 2k$, we're talking about a couple billion dollars, which is not so much if it's many thousands of individuals doing the work and spending the capital.

    4. Re:Mind boggling numbers by mrchaotica · · Score: 1

      Hey, nobody said you had to buy them all at once...

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    5. Re:Mind boggling numbers by Anonymous Coward · · Score: 0

      Perhaps not, but even if you phased in the installation solar panels don't last forever. I believe the recommended replacement cycle is around 20 years (~1% a year collector efficiency loss), so assuming the low end number is correct (~$1T) then you'll eventually be spending ~$50 Billion a year in panel changouts alone.. Thats 2% of the states GDP for solar panels alone not including labor, grid storage, transmission and money for other energy sources (nuclear, wind, fossil, etc).

    6. Re:Mind boggling numbers by Anonymous Coward · · Score: 0

      Secondly what do you do with all that power

      I have solar and don't care about selling any back to the utilities. I can easily use 100% of what I make. Personally, I keep my house at 68F and don't worry about my power bill. Everything else is small compared to the AC. House stays cool throughout the night.

  28. Building nuclear illegal in CA by mdsolar · · Score: 2

    Until there is a solution for nuclear waste, it is illegal to build nuclear power plants in California. Notice that when the sun shine, there is no need to use natural gas, so gas use is reduced. Your argument is mistaken.

    1. Re:Building nuclear illegal in CA by Anonymous Coward · · Score: 0

      Wait til some twit proposes fusion again, and, leaves out the part about the nuclear plants needed to generate the critical tritium, because it has a very short half-life and the last of the US supply is disappearing even as we speak.

      Of course, one *could* use real solar. Space based solar mirrors, *much* larger surface area, focus it to the power conversion plants on the ground for local storage, and the mirrors could go in nearly arbitrary orbits using the solar wind and light pressure to stay geo-synchronous in non-standard orbits. But hey, why should I mention what Arther C. Clarke discussed publicly in the 1980's as a far greater and more effective solarr power source capable of ooperating during the night time?

    2. Re:Building nuclear illegal in CA by blindseer · · Score: 1

      NASA studied space based solar extensively for years and it will never happen. The energy required to get the material into orbit to create the solar station cannot be returned in the lifetime of that station. Barring some great leap in solar power technology it simply cannot be feasible.

      Just stop with the space based solar.

      --
      I am armed because I am free. I am free because I am armed.
    3. Re:Building nuclear illegal in CA by blindseer · · Score: 1

      Notice that when the sun shine, there is no need to use natural gas, so gas use is reduced. Your argument is mistaken.

      You seem to have missed a very important data point I have already given. Combined cycle power is twice as efficient as gas turbines.

      I'll give a simple example. Assume that whenever the sun shines the solar panel produces maximum power. Assume that when the sun does not shine that all power comes from gas turbines. Peak power usage is not at noon, but at about 6:00PM, when the sun sets. So about half of the energy used is produced by solar, half by natural gas. Now assume that there were no solar panels, or natural gas turbines, but instead only combined cycle natural gas. Combined cycle is twice as efficient as the gas turbines so for the same fuel we get twice the electrical energy. In both situations we burn the same amount of fuel and get the same amount of electricity. Because it takes a lot of material and labor to make a solar panel the energy it produces costs twice what that same energy would be from combined cycle. Because gas turbines burn twice as much fuel as combined cycle that energy costs twice as much. So, we get the same energy, burning the same amount of fuel, and pay twice as much for it. A total loser.

      My very simple example ignores a lot of what happens in the real world, most notably that solar power produces the same output at noon as it does at twilight. Real world means that relying on solar mean increased carbon output or only very slight reductions. Either way it means a near double increase of cost in electricity.

      I'll go one step further, just to twist the knife. Solar power is right now about 20% efficient for common utility grade panels. Theoretical efficiency for photovoltaic panels is near 60%. Theoretical efficiency for a solar power heat engine is 95%, current efficiency is about 30% with future expected efficiency near 75%. To be kind I'll give solar power a 3x gain on efficiency, and say that makes solar power cost 1/3 what it does now. Solar power now is estimated to cost between double and triple what coal, natural gas combined cycle, nuclear, and hydro, cost. Those four power sources are near equal in price. Being kind again I'll say the price is only double, and we will assume future manufacture costs remain the same so future solar would cost only 2/3rds what electricity costs now. A win then, right?

      Not so much. Solar power only works during the day. We'd need something to not only store that solar power but produce enough excess to store for the night. Now we have to first double the solar power produced, which turns 2/3rds the cost to 4/3rds the cost. Then we need to pay for the storage mechanisms, since we are already at a loss I don't see a point to speculate that cost.

      What if we don't store the energy? Use something else to make up for the night time? Like natural gas turbines? That gets back to what I laid out before, but instead of a double in cost we get something like 1.5x the cost. What if we use wind? Wind doesn't always blow and costs the same or more than the natural gas turbines. Going any further and we have a grid much like we have now except with perhaps solar contributing perhaps 15% to 20% rather than what we have now where it's less than 1%. Going any higher than that 15% and there is a risk of destabilizing the grid from severe weather and the odd solar eclipse.

      --
      I am armed because I am free. I am free because I am armed.
  29. Yes, your reading miscomprehension by Anonymous Coward · · Score: 0

    And you need to read the text again:

    About 8% of terrestrial surfaces in California have been developed, ranging from cities and buildings to park spaces. If photovoltaic panels, along with concentrating solar power, were more effectively deployed in and around those areas

    It would take about 50,000km^2 to power the entire world. All power use. At less than half the efficiency you get today. With a projected increase up to 2050.

    Your figures should have been reworked to view how wrong they are.

  30. Re:But even if they had enough power... by rally2xs · · Score: 1

    They're not going to be able to build that overnight. If they think they might need it next year, they should start building something that big in about 2005.

  31. Re:But even if they had enough power... by rally2xs · · Score: 1

    "And it would pay off extremely well."

    If that is true, then private industry could (and should) do it. Adding gov't to something just increases the cost (absolutely) and delay (probably.)

  32. Re:Libertarianism HAS been tried... by silentcoder · · Score: 2

    Every single claim in that post is just plain false.
    What has been responsibile for humanity's recent improvements in quality of life has been science: a blatantly socialist system.

    There is nothing libertarian about contracts, profit-seeking or voluntary trade, these are found in ALL variations of capitalism AND in many variations of socialism as well.

    Nowhere in my speech did I once speak in favour of the state, but the reality is that there is a LOT of very wealthy countries with big governments and not a single rich country WITHOUT one. Small governments are only found where poverty is at it's worst. The sole EXCEPTION was Andalusia - no government and high quality of life, but THAT was socialist.

    Libertarianism has NEVER been tried - you're just trying to shoehorn a bunch of stuff and claim it's libertarianism while ignoring the most IMPORTANT parts of what DEFINES libertarianism. You don't know what libertarianism actually IS - you just like the sound of the word it seems and apply it to everything you approve of regardless of whether that is a particularly or exclusively libertarian thing, and ignoring that the things that ARE particularly and exclusively libertarian have NOT in fact ever been tried.

    Only one variation of socialism has been a failure, there are thousands of others - and at least one has been a remarkable success, I gave you the example right there in my post. The kind of capitalism practiced in the Rhineland countries, and Scandinavian welfare-state concepts are considered socialist by American standards and THEY are MORE successful than America has ever been.
    Maybe not in the way America likes to measure (total wealth in the country) but in the way that MATTERS: actual quality of life of most citizens.
    They have very few poor people, and the few they have live much better lives than the poor in the USA - now THAT is success.

    --
    Unicode killed the ASCII-art *
  33. You need hydro-electric pump storage! by Terje+Mathisen · · Score: 4, Informative

    One of the reasons Denmark can run on wind (currently 39% of their total) and solar power (500 MW total from 90,000 private installations according to wikipedia) is that we have installed multiple DC transmissions lines between Denmark and Norway, and hydro-electric power is by far the most responsive to changing load.

    On the west coast mountains we have storage dams where surplus power can be used to pump up water during periods of surplus production and then let down again when Denmark, Sweden or countries further south need some extra power.

    From http://en.wikipedia.org/wiki/P... you can see that this is _by far_ the largest grid energy storage form, accounting for more than 99% of the total capacity worldwide.

    The total efficiency (70%-87%) is quite good, which means that this is not just a good idea but can pay for itself anywhere the difference between peak and off-peak energy costs are larger than the ~20% that is lost to pump friction.

    Terje

    --
    "almost all programming can be viewed as an exercise in caching"
    1. Re:You need hydro-electric pump storage! by msevior · · Score: 1

      Yes. But even so, Denmark's CO2 footprint is much larger than Sweden and France and its electricity cost is far higher because of the expensive windmills and interconnects. The difference? Sweden and France have a large fraction of their electricity generated by Nuclear, which by the way, makes a nice backup if those hydro systems are maxed out during a long-term lull in wind output.

      Oh well, good on Denmark for showing the world the real imitations of variable renewables...

    2. Re:You need hydro-electric pump storage! by Anonymous Coward · · Score: 0

      Great idea.

      One problem in the US is electricity is so cheap that most of these great ideas are not economic.

      I live near Seattle Washington, just over the mountains in the east is a large amount of hydro generation. Most of it is probably sent to California.

      From memory I pay 8c/kWh for the first 600kWh, then 10c/kWh after that. I have a 1825sq ft house built in 1980 (so it has reasonable insulation standards) with an electric forced air furnace. To keep my entire house at a constant 69F or 20.5C all day, and all night over winter, and including all other electricity use and electric hot water, for a family of 3, my monthly bill is about $250 to $300, we demolish about 3000kWh per month. It takes me about 1.5 days of work per month to pay for it, and that's a fairly modest income by some standards.

      Just replacing the old double pane windows, some with failed seals would take years if _ever_ to replay the cost of new windows from the energy saved. Probably looking at about $3000 to do the whole house including two ranch-sliders, furnace uses about 2/3 to half of the monthly usage, thats about 20 winters worth of electricity, adjust it for inflation, make to 10 to 15 winters. By the time the windows are 20 years old, they about due to be replaced again because the seals fail, so I might get a "few" years of savings on home heating inbetween window replacements. Same argument again with replacing the electric furnace with a centralized heatpump unit, it would NEVER pay for it self, let alone start saving me money, not to mention a heap pump is a thousand times more complex than an electric furnace which has a heating element, and a big fan, so one moving part thats cheap to replace should it ever fail.

      So why waste money on these things that never actually save you some dough? Might as well spend it on stuff you'll get some enjoyment out of, rather than the false economy of trying to make your house more efficient than it already is.

    3. Re:You need hydro-electric pump storage! by mrchaotica · · Score: 1

      The total efficiency (70%-87%) is quite good, which means that this is not just a good idea but can pay for itself anywhere the difference between peak and off-peak energy costs are larger than the ~20% that is lost to pump friction.

      ...and where you have the right geographic features to install a dam. As I understand it, most places in the US that are suitable for dams already have one, but we'd need a lot more to compensate for widespread solar. That doesn't make pumped storage a bad idea, it just means it isn't a complete solution.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

  34. Solar Concentration 6,000 TWh? by Chas · · Score: 1

    Okay, current solar concentration clocks in at about 100MW steady output and about 300GWh per annum per square mile of facility.

    You're talking about covering up about 20,000 square miles, or roughly 12% of the state, in solar concentrator facilities.

    Never mind that Nuclear is many times more energy-dense and could support the state, with a more realistic investment in renewables in just a fraction of that land area.

    --


    Chas - The one, the only.
    THANK GOD!!!
  35. Re:Without workers power by GLMDesigns · · Score: 1

    Yeah for the dictatorship of the proletariat.. Nothing like a central authority telling you what to do. Just look to Mother Russian, Mao's China and the wonderful Kim leadership in Korea and see how socialism leads the way to freedom and person fulfillment.

    --
    If you're scared of your govt then you need to further restrict its powers
    Vote 3rd Party in 2016 and beyond
  36. Re:Libertarianism HAS been tried... by shutdown+-p+now · · Score: 2

    Libertarian principles are what has raised humanity out of the muck and into a quality of life that nobody could have ever envisioned.

    Yeah, like this or this.

  37. There is a KEY word in this article by p51d007 · · Score: 0

    "could" it could meet between three and five times what California currently uses for electricity.

  38. Battery is the real problem by gurps_npc · · Score: 2
    At this point in time, we have effective energy generation - geothermal, solar,and wind all are cheaper than coal and approaching natural gas.

    What we need is a better way to transmit, store or retrieve power (electrical, heat, momentum, pressure, chemical, it doesn't matter - and yes, a room temperature superconductor will count). Do that and pretty instantly several things will happen:

    1)Coal plants will all shut down. They are too expensive now, even not accounting for their massively bad ecological issues.

    2)New natural gas plants will cease to be created. A few might even shut down.

    3) New nuclear plants will suddenly be approved .... in the middle of deserts and other areas safely far away from population centers

    4) New geothermal, solar, tidal, and wind power plants will pop up to replace the coal plants.

    Also, there is the possibility that cars will switch to the new power source, but no guarantee.

    --
    excitingthingstodo.blogspot.com
    1. Re:Battery is the real problem by Anonymous Coward · · Score: 0

      "New nuclear plants will suddenly be approved .... in the middle of deserts and other areas safely far away from population centers"

      Uh, nope. Nuke plants require huge amounts of water for cooling. That's why you find them on rivers and coasts.

  39. Re:Without workers power by angel'o'sphere · · Score: 1

    No idea what polit nonsense and ideologies have to do here:
    Andalusia in Spain was anarcho socialist ...., they were simultaneously at war with capitalists from the north and communists from the South.
    Actually the south of Andalusia is the mediterranean sea.

    I doubt they where at war with Poseidon.

    --
    Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
  40. Wow by dale.furno · · Score: 0

    Can they turn electricity into water? better get working on that system fast.

  41. Re:But even if they had enough power... by dave420 · · Score: 1

    No, adding government can decrease the cost by allowing for it to bargain for better deals from private industry through scale. Delays also might not increase. That is unless you are confusing your governments (local, national, whatever) with others...

  42. Re:Without workers power by dave420 · · Score: 2

    Translation:

    "I, nospam007, don't know what socialism is. I've heard some people on the TV say that Obama is socialist, so I'm going to assume he is. I'm not good at learning, or I simply refuse to."

  43. Solution for Cal Economy by ralphsiegler · · Score: 1

    State sells the excess to neighbors for profit, helping the State's budget?

  44. Degree of Success by JimSadler · · Score: 1

    The US has been a mixed system for many decades. The degree of success of the US corresponds to the degree that we are a socialist system. Capitalism is more like a disease that has reached its end stage and is killing off its host. It is obvious that California can do quite well with solar and wind replacing nuclear and fossil fueled power systems. I'm in Florida and we need a way to turn the sun off a bit here. We have so much intense sun light that half my town vanishes nine months a year as it is an oven here. And the disease called capitalism is all that has kept my state from going to sun and tide to supply all of our power needs. Special interest groups are blocking progress at all turns. Our wretched governor will fire state employees for using the words global warming. And this is despite the fact that a large portion of our state will soon be submerged by rising seas. The Florida Keys as well as the Everglades will be salt water lagoons soon enough. Parts of Miami beach are already in trouble. The first national shock will occur when the vastly expensive beach front properties in south Florida become ineligible for insurance due to rising seas. The financial chaos alone could be severe enough to bankrupt the nation. It will also mean that we will have no fresh water supplies for about six million Floridians unless we build a huge network of desalinization plants to obtain fresh water. It will also mean that one of the few places in America that can grow crops in the winter will no longer be used for farming.

  45. Oil price has hit a six year low! YAY! by blindseer · · Score: 1

    The solar power people should be celebrating right now. Oil is now the cheapest it has been in six years. Why should they be celebrating? Because oil price is a proxy for energy prices. If oil is cheap then all energy is cheap.

    If oil is cheap then energy sources like oil shale and tar sands look like a bad idea. If oil is expensive then that makes oil shale and tar sands look profitable.

    I hear so many times how we need to make oil expensive to save the whales, or whatever needs saving this week, and that just sounds counter to the basics of economics to me. We need to make oil cheap. Make it so cheap that no one wants it.

    I can buy one ton of dirt for $5, I've done it. Why can I buy dirt that cheap? Because no one wants it. If people wanted it then it would not be that cheap. It costs more in the fuel to get it than the dirt itself costs. Make oil the same and no one will go get it. Make energy so cheap that no one will bother to expend the energy to get the oil.

    How do we make energy so cheap that no one bothers to drill for oil? Well, I have an idea. My idea does not involve carbon credits, energy taxes, or any of that because all of those raise the price of energy. Raise the price of energy and things like coal and oil shale is profitable. DO NOT TAX CARBON!

    Another thing, who makes the most profit from oil? It's not the oil companies. It's not the refineries. It certainly is not the local filling station. It's the government. Taxes on fossil fuels makes the government piles of money. They aren't going to kill their golden goose. Demanding a raise in carbon taxes only makes the government more dependent on fossil fuels.

    Solar panels cost the government money, they subsidize their production. Where does this money come from? Oil taxes. What happens if solar power replaces oil and the tax structure stays in place? The government runs out of money. When the government gets serious about solar power then we will see it taxed. Not only do solar power subsidies take money from the poor and give it to the rich people that can afford solar power it is holding solar power back.

    Solar power subsidies is holding it back. The solar power industry exists to maximize government subsidy, not energy output. Remove the subsidy and the industry must either make something that can compete with oil or fade out of existence. Our economy cannot support losers forever.

    --
    I am armed because I am free. I am free because I am armed.
  46. Re:Without workers power by rraylion · · Score: 1

    Honestly the societies you listed had problems that communism was not the cause of

    USSR - was in a arms race with the US, that it was never going to win, it pushed so much of it's countries production into making nukes that while it had thousands of more nuclear warheads than the USA at it's peak, it could do nothing else economically.

    Those other counties listed - NK, Cuba, China ... the only reason they are behind is because they were locked out economic markets for being communist. Look at a map of the Marshal Plan participants ( European Recovery Program ), these are the most advanced technologically and stable economies in the world next to the US.

    China never promised it's people an easy life, China's government promises it's people safety from invaders and internal stability. We have a hard time understanding this as a primary driving mandate in the US because we have a very different value system. We are culturally very different, if the Chinese did not like they're government then if they chose to rise to the occasion there are too many of them ( x billion ) to not topple any government on Earth, just saying ;-)

    If you are stating that economic ability is - them getting close to the US - then China passed us a few years ago, and as there next half billion people move into the middle class they will be the only economic powerhouse on the planet... we in the US do not have the number of people to compete, our population is too small and this generation of rule makers do not like immigrants ( every generation has had a problem with this to be fair -- lookup Irish discrimination, Catholic discrimination, Italian discrimination - if your different and moved to the US recently the established blamed everything on you )

    "In fact, their political policies reinforced* inequity," == as do ours in the US, where the middle class has been shrunk by half in the last 30 years due to changes in tax policy. Granted I like paying less in taxes, but I realize that as the more affluent pay less as well they get to buy more items for speculation purposes that raises the cost of items higher, like houses, cars, clothing, food, and travel, hotels, rentals and everything else. Their money flooding back into the economy has had good things happen to, like reinvestment, venture capitalism funding large gains in tech.

      At the end of the day, if we create a society in which 90% of work is done and can be done by machines or the people that program and maintain machines, how do we evolve our way of thinking about our, humans, place in society. If we can only envision usefulness in terms of economics we are doomed to displacing billions into poverty. And if everyone is poor not because they are unable, but because it make no economic sense to employ them we need to rethink money and the role it plays. People are starting to have this conversation more and more as the US the second biggest economy the former king of the middle class looses it middle class to poverty.

  47. Re:But even if they had enough power... by gringofrijolero · · Score: 1

    I'm talking about the payoff for society that the government is supposed to represent, not just a few investors. It is the same issue that goes for all essential goods. There are no technical reasons for shortages of any kind.

    --
    Todos mis movimientos están friamente calculados
  48. Re:But even if they had enough power... by rally2xs · · Score: 1

    "Payoffs to society" would be providing a good or service at the least cost and greatest availability. Involvement of government generally causes increased costs and less availability. That is a prime reason for private industry to be doing it.

  49. And wind fills that in just fine. by Ungrounded+Lightning · · Score: 1

    Basically as solar rapidly drops off at sunset conventional is having trouble ramping up to meet demand.

    On the other hand, wind power in many of the best sites peaks strongly in exactly the "duck head" period.

    The reason is the "lake effect": Land heats and cools far more rapidly than bodies of water (which are nearly a constant temperature on a daily cycle). The difference forms a heat engine, and the cycle lags the solar cycle by several hours. In the afternoon and evening (peaking about sunset) the wind blows strongly from the water to the land. (In the morning it blows from the land to the water though more weakly.)

    The wind power available through a given swept cross-section goes up with the CUBE of the wind speed: (The energy per unit mass goes up with the square of the velocity, and the amount of mass flowing goes with the first power, multiplying one more factor of v.) That means a doubling of the wind speed multiplies the availabe power bya factor of 8, a tripling by 27, and so on. So it doesn't take much variation in wind speed to create a large variation in power.

    Some of the best sites to take advantage of this are on the western temperate-zone coasts of continents (which happen to contain a lot of the urban load.) There the lake effect is extreme, combining with the prevailig winds.

    One of the most extreme examples is California's Altamont Pass, where a break in the mountains funnels the prevailing, westerlies combined with the lake effect winds - with the Pacific Ocean as the "lake" and CA's Central Valley as the "land". The area is practically paved with windmills.

    But you don't need something that extreme. My NV place, in the eastern Sierra foothills, gets strong afternoon winds from the Nevada Desert working against the damp forests of the Sierras.

    Even without a strong lake effect to "chop off the duck's head", wind and solar power complement each other and reasonably match demand in several other ways in areas where both are available. For a lot of sites with intermittent sun-blocking weather, the climate is such that the cloudy times are windy and the calm times sunny. (Wind may be more prevalent in winter, as well.) Sun power closely tracks the solar input component of air-conditioning load, while wind goes up (though more steeply) with heat gain/loss across insulation and via air infiltration. So with a combo of wind and solar energy harvesting, when the weather hands you more load it also hands you more power to handle it.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
    1. Re:And wind fills that in just fine. by jklovanc · · Score: 1

      Nice theory. Do you have any practical data to back that up. Are there days when lake effect fails? If so it is not a reliable phenomenon.

  50. Re:Libertarianism HAS been tried... by Anonymous Coward · · Score: 0

    Hmm, let's contrast your examples with the Holocaust, Gulags, pogroms, the Great Leap Forward etc. All wonderful undertakings performed by governments.

  51. Re:Libertarianism HAS been tried... by shutdown+-p+now · · Score: 1

    Right. So it's either four penny coffin or gulag, and there's no ground in between, none at all.

  52. Re:Libertarianism HAS been tried... by Anonymous Coward · · Score: 0

    Right, because individualism absolutely means everyone has to starve to death and lose their homes. Wait a minute. Why do those things happen overwhelmingly in collectivist countries?

  53. Re:Libertarianism HAS been tried... by shutdown+-p+now · · Score: 1

    Unregulated capitalism (which you seem to be substituting arbitrarily for individualism) absolutely means just that, as the 19th century history of any Western country shows. There's a reason why the same period in US was named the Gilded Age, you know.

    Totalitarianism also generally means that, as early-to-mid 20th century history of the same countries has shown.

    A middle ground where individualism thrives, but government intervention ensures that it doesn't result in sociopathic policies on a large scale causing extreme suffering, is experimentally proven to produce the best results, as the second part of 20th century in, again, the same countries shows even today.

  54. Vanadium Redox, too. by Ungrounded+Lightning · · Score: 1

    Grid scale sodium sulphur batteries are already deployed at multiple sites around the world, especially in Japan and Hawaii. The only rare elements are in the control electronics, they last much longer than lithium and are easy to recycle.

    Vanadium Redox, too. (Mainly "down under" - because the patents are still in force and the little company with them has all the business it can handle and doesn't seem interested in licensing it to potential competition.) Marvelous technology.

    New Lithium (and related) batteries with much more stable (and thus long-lasting) electrode designs and hysterically low losses and fast charging/discharging are also starting to hit the market. It will be interesting to see what happens in three or four years when Tesla's new Nevada battery "Gigafactory" comes online and starts ramping up.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  55. Disingenuous liar. by Anonymous Coward · · Score: 0
    You disingenuous liar.

    It would also require more rare earth elements than exist in the earth's crust.

    Wrong. You couldn't be more wrong. The oceans alone contain more than enough of every element we care about. If the demand is there, the supply is easy. The only limit is ramp-up time for extracting.

    Lithium: The total lithium content of seawater is very large and is estimated as 230 billion tonnes

    Neodymium: 0.1ppt in the oceans still means >1.2 million tonnes.

    Freakin' Uranium: over 1 BILLION TONNES just hanging out in the water.

    I hope you've learned something today, and that you stop spouting nonsense.

  56. Why I specified the water heater... by Firethorn · · Score: 1

    That's why I specified the water heater, of course. They don't give a hoot about losing power one way or another,

    And there's a reason why I mentioned saving power for the fridge/stove. If you're going 'extreme', yes, you could get a fridge that allows for power interruption, but most of that would be going with a 'sunfrost' type model which can go for like a day, if unopened, without turning on it's compressor anyways.

    It sounds like your house's 'only' high power system that I would hook into a relay system would be the AC system. IE if you turn on every light in the house, every electric appliance, while in a reduced power availability situation, it'd kill the HVAC until you shut some things off.

    --
    I don't read AC A human right
    1. Re:Why I specified the water heater... by FlyHelicopters · · Score: 1

      And that is fine, except...

      What problem is all this trying to solve? That is, at the end of the day, where I'm getting a bit lost...

      I get that technically we could do it... but why?

      I already have reliable power, why would I want to switch to anything less than that?

      It seems like a solution in search of a problem.

    2. Re:Why I specified the water heater... by Firethorn · · Score: 1

      What problem is all this trying to solve? That is, at the end of the day, where I'm getting a bit lost...

      Save money, naturally. In a world of rising energy costs, locking in prices 'now' can save you considerable money down the road.

      The trick is that you come up with an idea to save money by investing in infrastructure. Then you figure out, initially 'back of the envelope', the cost of said infrastructure. If you get a 'direct payback' of less then a decade, it's time to add in 'cost of capital' and a risk assessment.

      At least for monthly charges, keeping inflation in mind is good as well - present money is generally worth more than future money, so if you can lock in your power usage at $200/month for the next ~20 years or so, you could still be paying $200/month for your electricity*, while everybody else is paying $300 for that same electricity from the power company.

      *When I figured it out for you, it was a 13 year payoff, let's say that you refurbished your solar system so you have a payment again.

      --
      I don't read AC A human right
    3. Re:Why I specified the water heater... by FlyHelicopters · · Score: 1

      At least for monthly charges, keeping inflation in mind is good as well - present money is generally worth more than future money, so if you can lock in your power usage at $200/month for the next ~20 years or so, you could still be paying $200/month for your electricity*, while everybody else is paying $300 for that same electricity from the power company.

      Yes, but to save $100 a month in 10 or 20 years, I have to pay $50,000 up front ($35K after tax credit), all to end up more or less back where I was.

      $100 a month is not a material amount of money to me, and the $20-30 a month it would save someone closer to the average or mean shouldn't be material either.

      I maintain that solar, outside of massive rebates and incentives from government and utilities, simply makes no sense to install on residential roofs.

      When I called several local solar companies a year ago to get fresh quotes, the first question they asked was, "Who provides your power". It is either Encore or CoServe. Encore offers some really nice rebates (or they did) and of course those are baked into the price. CoServe does not, they pay $1,000 max towards solar as a token contribution. In return I pay a net of less than 11 cents a kWh, while the average Encore customer pays about 3 cents more.

      The lesson? Rebates and tax credits aren't free. :)

      ---

      Now that being said, solar may well make sense for utilities to install, they can do so at scales that are more competitive and I would encourage them doing so if the price is about the same as existing supplies.

      ---

      I will further note that the above numbers apply to this power market. In Australia the average customer pays double per kWh that I do (actually closer to 2.5 times as much). If my rate went to 25 cents per kWh tomorrow, I'd probably have panels on the roof the following month. I suspect that 12 months later, many more people would, and that 30% tax credit wouldn't last long either, it would become too expensive.

  57. Re: Without workers power by Bruha · · Score: 1

    You can easily have democratic socialism in fact they would be mutually beneficial.