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Hoover Dams For Lilliput: Does Small Hydroelectric Power Have a Future?

New submitter MatthewVD writes "Boing Boing's Maggie Koerth-Baker, author of Before The Lights Go Out, writes that the era of giant hydroelectric projects like the Hoover Dam has passed. But the Department of Energy has identified 5,400 potential sites for small hydro projects of 30 MWs or less. The sites, in states as dry as Kansas, represent a total 18,000 MW of power — enough to increase by 50 percent America's hydro power. Even New York City's East River has pilot projects to produce power from underwater turbines. As we stare down global warming and peak oil, could small hydroelectric power be a key solution?"

302 comments

  1. They keep making them.... by Apothem · · Score: 1, Interesting

    But they never pick up after themselves. How many of these projects do you see get made, and how many of them actually get maintained afterwards? You'd like to think that the two numbers would be closer together but they're not.

  2. Economies of scale by Gazoogleheimer · · Score: 4, Insightful

    Small hydro is nothing new. The state of Georgia has something like fifty or sixty small hydro sites, and they barely make any electricity -- as those stated in the article. The problem is, however, that hydroelectric power -- even without dams -- is fairly ecologically disturbing. Not only that, but you have to maintain it. Why would you want to have to maintain 5400 power plants that each only make less than 30MW? Yes, it's about four or five thousand households, but that's also about a thirtieth of an average coal plant. There's no incentive to do this. Your ROI is low, your maintenance is high (and difficult)...particularly when chemical belchers like Plant Scherer can exist, which produce upwards of three and a half gigawatts. They aren't trendy, but I've yet to see a conclusive argument against breeder reactors.

    1. Re:Economies of scale by drinkypoo · · Score: 4, Interesting

      The argument against breeder reactors is that you need a lot less nuclear fuel, so that's not good for the people who dig it up and sell it. I can't find another one, anyway. Follow the money.

      You're 100% right that medium-sized hydro is a bad solution, however. What we need is more MICRO hydro setups, which don't affect fish and other life because of where they're sited and how they're installed.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    2. Re:Economies of scale by cpu6502 · · Score: 1

      Agreed. Replacing oil with a plant-based fuel (ethanol, biodiesel) makes a lot more sense. And use solar roofs on homes for electricity. Live off what the sun gives us, as our ancestors did, rather than the dwindling supply of dead plant matter.

      BTW I think fuel cell cars are a deadend. They burn hydrogen, which last time I checked does not exist in nature. You can't just drill a hole and find hydrogen there.

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    3. Re:Economies of scale by cpu6502 · · Score: 3, Insightful

      What we need is less people (i.e. less babies). All of these problems like scarce energy, high pollution, and dwindling water supplies wouldn't exist if the North American population was only 16 million (1800). Or even 85 million (1900).

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    4. Re:Economies of scale by mhajicek · · Score: 3, Insightful

      Fuel cell cars are an answer to the problem of energy storage, not energy source. High performance batteries are expensive, and hard on the environment to produce. You can make hydrogen with clean energy almost as easily as you can charge a battery with it, and you can transfer hydrogen faster than electricity.

    5. Re:Economies of scale by jdastrup · · Score: 5, Funny

      Now that is A Modest Proposal...

    6. Re:Economies of scale by Anonymous Coward · · Score: 3, Insightful

      "Replacing oil with a plant-based fuel (ethanol, biodiesel) makes a lot more sense."

      Have you done the math? Replacing, say, half of the demand for oil with either of those would not be practical with current agricultural techniques. It's not that they aren't viable -- they are -- but the sheer *size* of the energy demand is the problem. Heck, whale oil was a renewable resource. It could have lasted forever. The problem was the quantities demanded. It's not easy to replace an average of 85 million barrels of oil per day with *anything*, and while there are many options for doing so, when you try to scale them up to that size or even a decent chunk of it you run into problems. We have a BIG problem coming in the next few decades, so we're going to have to employ many different solutions. And we need to start investing heavily in all of them now.

    7. Re:Economies of scale by egamma · · Score: 1

      You can't just drill a hole and find hydrogen there.

      Really? Whenever I turn on my shower millions of di-hydrodgen oxide molecules come out.

    8. Re:Economies of scale by ColdWetDog · · Score: 2

      No, replacing oil with plant based fuel DOES NOT make sense. It doesn't scale. It wastes water. It's only useful in certain edge case environments. Just like small scale hydro.

      --
      Faster! Faster! Faster would be better!
    9. Re:Economies of scale by wagnerrp · · Score: 3, Informative

      Replacing oil with a plant-based fuel makes no sense. The best plants convert around 10% of light into growth, of which only a fraction is recovered as fuel during harvesting, and only a fraction of that is recovered as usable energy when that fuel is consumed. Even lousy consumer-grade photovoltaics make far better use of sunlight than plants. If you want to spend gobs of money replacing our existing petroleum infrastructure, why not spend it on cheap, high capacity, powerful batteries?

    10. Re:Economies of scale by Moheeheeko · · Score: 2

      Yknow, other than the fact that Hydrogen Is the most abundant element in the known universe

    11. Re:Economies of scale by Anonymous Coward · · Score: 0

      mmmmmm the other other white meat

    12. Re:Economies of scale by wagnerrp · · Score: 4, Insightful

      You can transfer it quickly, but storage is a pain, and from water to hydrogen and back to water, the best returns aren't even hitting 50%. Nearly all of our hydrogen is produced by cracking petroleum, because electrolysis is just so inefficient.

    13. Re:Economies of scale by ThreeDeeNut · · Score: 2

      All we need is to resurrect Stan Meyers and Nicola Tesla. Between the two of them, we would be working on static electricity delivered free and water also delivered to us free. Possibly the two most important inventors of recent times... everyone should know their names and what hey did for mankind. Chances are, if you find a great way to solve mankinds biggest problems for free, you should run and hide or consider offing yourself. I think the reality is, batteries are expensive, gas is expensive, nuclear is expensive and therefore are all viable because of the supply chain they have to accomodate. Lots of people can make lots of money... just not you or I... we get to pay for it.

    14. Re:Economies of scale by dmatos · · Score: 4, Interesting

      I agree on the micro-hydro setups. This winter I stayed at a resort in northern Ontario that has a 20kW turbine on site. It's the only electricity that's available there. Privately owned and maintained.

      Little-to-no damage to the habitat, because the resort is situated between two lakes that have a level difference of about 6 feet naturally.

      Of course, it's rare to find locations like that where low-impact turbines could be installed, but we should capitalize on them whenever we can.

      --

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      --Scott Adams
    15. Re:Economies of scale by egamma · · Score: 1
      Your math is wrong. 1MW= 1000 households

      5400 sites*15MW (since it says 'less than') *1000 homes per megawatt=81 million homes. That's quite a lot of homes.

    16. Re:Economies of scale by jaymemaurice · · Score: 1

      Why is Nuclear so expensive?

      --
      120 characters ought to be enough for anyone
    17. Re:Economies of scale by Anonymous Coward · · Score: 0

      You're still consuming oxygen with any form of combustion, whether the fuel comes from the ground or from plants. Nuclear power from a fast/fast-breeder reactor is chemically clean, a change to full-on Uranium/Thorium fuel consumption would give the atmosphere a chance to rebalance itself.
      Even burning hydrogen, in excess, would have a significant effect on the natural cycle. You simply can't dump that much water vapour into the cycle and not expect some significant alteration to nature. But "it's only water". OK, how much less sun are we going to get now, because of it? How much more wind? What kinds of vegetation will die off due to solar throttling? How much more erosion will take place? How about an increase in wind-based storms, both in quantity and magnitude?
      Burning some hydrogen is a fine idea, while employing a host of power generating techniques, but the only real environmentally benign form of power is electricity, and nuclear is the superior choice (as opposed to converting chemical power, or coercing power it out of nature while it tries to self-correct).

    18. Re:Economies of scale by ngg · · Score: 1

      The argument against breeder reactors is that you need a lot less nuclear fuel, so that's not good for the people who dig it up and sell it. I can't find another one, anyway. Follow the money.

      That's one argument. Another is that they encourage nuclear proliferation because (in some designs) the spent fuel can be reprocessed into either new fuel or weapons-grade fissile material. Other nations might have a stronger desire to start a breeder program if they saw them being used in first-world countries. A rogue nation could, in principle, divert the output of a breeder reactor to a weapons program (which would be bad). Is this a good argument? Heck, I don't know. There are certainly other first-world countries with breeder programs, so I don't think it makes much sense. But, you should at least be aware that it's out there.

    19. Re:Economies of scale by Anonymous Coward · · Score: 1

      You volunteering to go first?

    20. Re:Economies of scale by BoRegardless · · Score: 4, Interesting

      "Less people" is fine later, but right now, many people can generate their own power on a small creek. It doesn't take much to support one house. The generators are inexpensive and the efficiency doesn't have to be high as that is not the most important feature for home use. I grew up on a small creek where a floating water wheel (or whatever you want to call it) could easily produce enough power for a house and not affect the creek in any measurable way.

      I agree on population, except...politicians have made so many promises to deliver goodies to future citizens, that failure to grow population will literally cause a revolution when the money runs out as the the population seriously slows or sinks. Hence the desire by some politicians to want to let in foreigners without going through any supervised immigration process.

      Social Security (an oxymoron if there ever was one) is merely a promise to pay older people by taking cash from younger people...who are declining as a % of the older population. Medicare is the same. Citizens have come to view these goodies as a "right", but in fact they are laws that can be changed or repealed...and if they are not, there will be inflation that collapses the purchasing power of retirees.

      Europe is in the midst of near bankruptcy in 4-5 countries (Greek debt holders will get only about 25% on their bonds...how about that for retirees who invested in 'safe' Greek bonds) SIMPLY because they promised more than they can deliver!

      SOLUTION: Do not rely on the government to save you or your family. Save, invest and grow your own little community as best you can. That is the American way that always led to success.

    21. Re:Economies of scale by rickb928 · · Score: 1

      FWIW, Oil is assumed to be a plant-based fuel.

      But growing food for fuel is stupid. Brazil will get away with this until they get hungry, which will happen one day.

      --
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    22. Re:Economies of scale by BoRegardless · · Score: 1

      Black Swans: Those events are not as rare as once thought, because smart people are actually getting results.

      Several technology breakthroughs have shown promise in articles in Wired and Technology Review in the last week or two.

      One was using nanoforrest crystal structures in water with sunlight to produce Hydrogen...obviously as a first step to direct sunlight conversion of water.

      The second one was the use a new novel chemical means of storing hydrogen at low pressure.

      Both of the above announcements were not "commercial" products, but they are promising, even if they take 5-10 years to become available.

    23. Re:Economies of scale by roman_mir · · Score: 2, Interesting

      Nonsense. People are NOT a drain on a system if the system does not turn them to be a drain.

      The system that allows the people to be free and to fulfil their own needs allows for the people to provide for themselves, this is a natural consequence of free market - the more demand there is for something the more supply will be provided. People find way to create more supply when there is more demand and if they can't find the supply, there will be a natural decrease of population (this is seen in European countries, as they are forced into near slave taxation levels, they can't afford children and births are very depressed as the young are forced to give up so much for the old).

      OTOH your proposal is nothing short of Modest, isn't it? I can see you standing on a podium, a round of applause from the junger-cpu6502s or however your preferred system of totalitarian regime will organise everybody. I bet self-immolation and other forms of suicide would be greatly encouraged and praised for their 'selflessness' that is so wonderful for your preferred flavour of socialist movement.

      I have a better proposal - you have matches and access to some kerosene? Do you know how to use those things? Set an example.

    24. Re:Economies of scale by roman_mir · · Score: 0

      For your individualistic approach and a probable adherence and devotion to the Constitutional principles, you are now declared the enemy of the State and are sentenced to be re-educated and recycled in that order.

    25. Re:Economies of scale by khallow · · Score: 1

      All of these problems like scarce energy, high pollution, and dwindling water supplies wouldn't exist if the North American population was only 16 million (1800). Or even 85 million (1900).

      Sure, it'd be less overall impact on the environment, but those problems would still exist because impact on the environment is only a part of those problems.

    26. Re:Economies of scale by wagnerrp · · Score: 1

      The second one was the use a new novel chemical means of storing hydrogen at low pressure.

      Got any links for that? The closest I heard to something actually useful was storage in dried ammonium salts, but I've not seen anything further done with that in years.

    27. Re:Economies of scale by Anonymous Coward · · Score: 0

      If the argument against medium-sized hydro is the ratio of maintenance to power generated, won't the ratio be even worse for MICRO hydro?

    28. Re:Economies of scale by oldmac31310 · · Score: 1

      But what about the rest of the world? North Americans are the only ones that have creeks. I suppose streams and brooks would be useless for this?

      --
      http://www.acetonestudio.com
    29. Re:Economies of scale by billstewart · · Score: 1

      Depends on whether "dark matter" counts as an element. They used to say that the most common elements were "hydrogen and stupidity", so maybe that's what dark matter's made of?

      Meanwhile, if we're going to use plant-based fuels instead of oil-based, it ought to be hemp. Not because it's any more efficient or the rest of that tree-hugging hippie crap, it's just because it'll keep more of the current drivers off the road and on their couch.

      --

      Bill Stewart
      New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
    30. Re:Economies of scale by ChrisMaple · · Score: 1

      you can transfer hydrogen faster than electricity.

      Surely you jest. I've yet to hear of a truck or pipeline that runs at even one millionth of c.

      --
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    31. Re:Economies of scale by tepples · · Score: 1

      So where do you get the energy to pull out the oxygen?

    32. Re:Economies of scale by AB3A · · Score: 1

      The company where I work has a dam that was meant for flood control and raw water storage for a water treatment plant. To get the water from the dam to the plant, we had a turbine that was connected to a shaft that connected to a centrifugal pump. In effect, we were using water to push water through a pipeline. However, it was a small system that could only move about 20 million gallons a day for a plant that needed 60 million gallons per day. It was a maintenance headache, so it was allowed to languish.

      Recently, a firm came along that wanted to refurbish that turbine for generating electricity. Although our experience was that keeping a thing like that running is not cheap or easy, that experience is about thirty years old. They are paying to refurbish it and to maintain it. It will be interesting to see how well they do with it.

      --
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    33. Re:Economies of scale by ericloewe · · Score: 1

      Speed is not what matters (for that matter, individual electrons do not move anywhere near c, but that's beside the point), it's bandwidth. The backbones for electrical distribution may be better, but charging the individual car is still a pain.

      Hydrogen doesn't have much infrastructure, but you sure could fill a tank of hydrogen much faster than you can charge (maybe even swap) batteries.

    34. Re:Economies of scale by ericloewe · · Score: 1

      1 kW per household seems very low. My desktop's PSU alone can draw 0,85 kW on its own. A good hair dryer consumes more than that.

    35. Re:Economies of scale by mhajicek · · Score: 1

      Hydrogen compressed to 700 bar holds 5.6 megajoules per liter, and with properly constructed systems could be transferred in less than a minute just like gasoline. How long would it take to transfer 5.6 megajoules of electricity with any reasonable hardware?

    36. Re:Economies of scale by dwye · · Score: 1

      1 kW per household seems very low. My desktop's PSU alone can draw 0,85 kW on its own. A good hair dryer consumes more than that.

      Except that you do not run your hairdryer all day, and probably not even at the same time as everyone else. What are you using your PC for, that it uses 850W on a continuous basis, BTW? Any chance that you are confusing a momentary pulse for its normal usage, or have mis-measured something?

    37. Re:Economies of scale by Bertie · · Score: 1

      Not that rare, really. A couple of months ago I was trekking through hill country in northern Burma, and several villages that I passed through had teeny tiny hydroelectric schemes on the go that provided the only electricity they had. There was very little of it, so they were careful about how it was apportioned, but they didn't need much, either. And all they needed to do this was the river that passed by and provided them all with their water.

      The world's littered with little riverside villages like this, and they could all do the micro-hydro thing. They aren't going to be producing 20kW, probably not even 2kW, but in these cases it's 2kW more than they had before without recourse to generators.

    38. Re:Economies of scale by cpu6502 · · Score: 0

      Stop with the totalitarian bullshit. A human being who has never been conceived is not in any way "harmed". Simply limiting each couple to one baby each IS modest compared to the 2050 U.S. devolving into an India (millions of people living in tentslums). I think THAT is far more cruel, and I can't believe you would choose such a future. You must be a real ass.

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    39. Re:Economies of scale by cpu6502 · · Score: 1

      >>>85 million barrels of oil per day

      What part of solar-powered homes did you not comprehend? You don't need to replace 85 million oil barrels..... only the amount that cars burn which only 1/10th that amount. There's enough corn, soybean, sugar, etc oil to do that.

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    40. Re:Economies of scale by mcgrew · · Score: 1

      Social Security (an oxymoron if there ever was one) is merely a promise to pay older people by taking cash from younger people...who are declining as a % of the older population.

      Yes, for now. The reason youngsters are being outnumbered by my generation is WWII. We're called "boomers" because of the huge number of babies concieved when the men came home from WWII. When my generation dies off, youngsters will again outnumber oldsters.

      Save, invest and grow your own little community as best you can.

      That was tried for 150 years of American history, and it didn't work. SS was started because folks too old to work any more simply starved. There's no way in hell to save or invest if you're earning minimum wage digging coal out of a mine or laying railroad tracks, even doing so at two jobs.

    41. Re:Economies of scale by cpu6502 · · Score: 1

      >>>other than the fact that Hydrogen Is the most abundant element in the known universe

      Great. Now where can I drill a hole, so I can put some into my car?

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    42. Re:Economies of scale by Moheeheeko · · Score: 1
      Because oil doesnt need to be processed and refined like hydrogen at all right?

      Go ahead, go buy a barrel of light sweet and put it in your gas tank, I dare you.

    43. Re:Economies of scale by nojayuk · · Score: 1

      There are a couple of problems with breeder reactors which make them impractical *at the present time*.

      A) Uranium is cheap, really really cheap -- the spot market price today for uranium oxide (U3O8) is $51 US per lb. The fuel cost for electricity from a uranium-fuelled light-water reactor is less than a cent per kWhr. Back in the early days of nuclear power development it was thought uranium was scarce, in part because nobody had bothered to explore for it unlike, say, gold, oil, copper etc. Until WWII it had few commercial markets. That's why breeders were thought necessary, to use up more of the limited stocks of raw uranium by converting U-238 into fissile plutonium. It turned out otherwise, especially when the number of reactors being built did not match expectations.

      B) Breeder reactors are cranky prototypes which run hot and tend to break in interesting ways, leaking molten radioactive sodium over the floor or damaging fuel rods etc. There's no off-the-shelf breeder design out there, just one-offs with a less than stellar record of uptime and reliability. Most of the breeders built to deliver grid power and breed fuel for light-water reactors have been decommissioned or are on hiatus. Since their primary aim is to make fuel they are less efficient in their secondary role of generating electricity which they also need to fulfill to be considered economic to operate.

      When easily-extracted sources of uranium ore dry up in the future, possibly because of a renaissance of reactor construction increasing demand then breeders might be worth building again using the lessons learned from the first generation of designs. However Japanese researchers have developd techniques that can extract uranium metal from seawater for a postulated cost (in year 2000 dollars) of about $300 per kilogramme which might move the goalposts for breeder reactors into the far future.

    44. Re:Economies of scale by cpu6502 · · Score: 1

      >>>High performance batteries are expensive, and hard on the environment to produce.

      So are fuel cells and high-pressure tanks (potentially explosive), so you've solved nothing with your fuel cell car. Plus you'll be wasting a ton of energy converting water into hydrogen. A plant-fuel-powered car would be more energy efficient.

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    45. Re:Economies of scale by mhajicek · · Score: 1

      Fuel cells aren't any more hazardous than a high energy density battery, will likely be much lighter and cheaper, and can be refilled much more rapidly. In addition, I can make electricity (and therefore hydrogen) at home. I can't make gasoline at home, and even making biodiesel takes a huge setup.

    46. Re:Economies of scale by Solandri · · Score: 3, Informative

      What we need is less people (i.e. less babies).

      If you look at global population statistics, there's an inverse correlation between industrialization and population growth. The vast majority of population growth is happening in undeveloped countries, while economically developed countries have close to zero and in some cases negative population growth (they are shrinking in population).

      So what you're describing is a symptom, not the problem in itself. Economic development seems to take care of the population growth problem all by itself, without any need for forced sterilization or one child per couple rules.

    47. Re:Economies of scale by Anonymous Coward · · Score: 0

      Umm Err, I live in Tasmania, and probably 90%-100% of our power is generated by medium hydro dams in the 80-300MW range Admittedly we're a fairly mountainous state of Australia but still they're not difficult, it's just the initial outlay, and we've got lots of beautiful lakes as a bonus :)

    48. Re:Economies of scale by ericloewe · · Score: 1

      1 kW per household seems very low. My desktop's PSU alone can draw 0,85 kW on its own. A good hair dryer consumes more than that.

      Except that you do not run your hairdryer all day, and probably not even at the same time as everyone else. What are you using your PC for, that it uses 850W on a continuous basis, BTW? Any chance that you are confusing a momentary pulse for its normal usage, or have mis-measured something?

      I don't run it all day, but do run it at the same time as multiple computers, various appliances (fridge, lights, TV, etc...) and sometimes the oven. At the same time, my neighbors are probably doing more or less the same thing. Definitely more than 1kW per home.

      As for my computer, it's not actually drawing 850W all the time - it's just a very rough estimate of how much power it can draw under heavy load. Most of the time it's in standby or doing light tasks. Distributed computing does tend to keep computers pretty loaded, though, which means constant high power consumption.

    49. Re:Economies of scale by Anonymous Coward · · Score: 1

      Three people are on a deserted island. There are enough resources to sustain those three people for the rest of their lives. Two of those people decide to fuck and have a kid. Suddenly, the third person is SOL. And you're saying I am the one trying to impose my will onto others?

      Maybe we aren't at that point yet, I will grant you that. But I would much prefer to not reach that point, having to decide "well, either my kid gets food, or your three kids get food. And like fuck I'm letting my kid starve".

    50. Re:Economies of scale by Anonymous Coward · · Score: 0

      Of course those photovoltaic cells spontaneously appear without any energy requirements or environmental repercussions.

    51. Re:Economies of scale by roman_mir · · Score: 1

      "well, either my kid gets food, or your three kids get food. And like fuck I'm letting my kid starve".

      - yeah, well, 3 to 1, guess who has better odds.

      But you have as many problems with logic as you do with the very idea of the individual freedom.

      People will figure out what to do to satisfy their needs and if they do not figure it out, they will decrease their birth rates and numbers organically, without ass-holes of various sizes getting their nose into every nook and cranny.

    52. Re:Economies of scale by CompMD · · Score: 1

      Lawrence, Kansas has a 100+ year old hydropower dam on the Kansas River. It powers the city administration buildings, the local cable tv/internet company, the local tv station, and the local newspaper facilities.

    53. Re:Economies of scale by Anonymous Coward · · Score: 0

      Why? Localized power so less line loss. If one hydro generator goes down you loose a thirtieth the power you would from your one coal plant going down. No pollution isn't a bad thing either. Coal is one of the biggest sources of mercury in the environment which is why a lot of fish aren't safe to eat. I'd rather see a system of paddle wheels and underwater generators that have less impact on the environment than damns. In the state of Maine there are small damns everywhere and yet few produce power so it's a wasted resource. Also there are rivers everywhere and most are fairly fast moving especially during spring when the snow melts. Most could support paddle wheels for power without noticeably slowing the rivers. It's sad that people aren't even allowed to use paddle wheels for power when they have property on a river. You could put tens of thousands of paddle wheels along the rivers in Maine with virtually no environmental impact and supply power to tens of thousands and maybe hundreds of thousands of homes. Lots to maintain? I'd call that lots of jobs and the upkeep is just a trade off for the fuel needed in coal plants and even nuclear power plants. There's no down side except less profit for the corporations if local communities installed their own paddle wheels.

    54. Re:Economies of scale by cpu6502 · · Score: 1

      >>>Fuel cells aren't any more hazardous than a high energy density battery

      No they're not. BUT the great-grandparent poster claimed fuel cells were safer, and he's wrong.

      >>> I can make electricity (and therefore hydrogen) at home

      I doubt the solar roof would provide enough energy. I've met EV drivers with solar roofs, and they say they only have enough energy for their homes... not for their cars. The same would be true for hydrogen production for cars.

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    55. Re:Economies of scale by Anonymous Coward · · Score: 0

      - yeah, well, 3 to 1, guess who has better odds.

      Whoever has richer parents, duh.

      Doesn't matter how many kids the poor pop out. That 1 precious snowflake of rich parents has much better odds.

      Well, that is, as long as the poor don't use their numbers to overthrow the rich through brute force.

      The rich of course know this. That is precisely why they designed the system we have today, with all that socialism and lack of freedom.

    56. Re:Economies of scale by cpu6502 · · Score: 1

      Technically, no. You could just dump it directly into a diesel engine. Of course we usually separate-out the lighter fuels (kerosine, gasoline) from heavier fuels (highway diesel, freightship diesel, plastics) but that isn't any big deal. You lose very little energy in that process...... not compared to how much energy is lost cracking water to make H2 and O2.

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    57. Re:Economies of scale by 32771 · · Score: 1

      Oh sweeeet I was just waiting for the combination of time and the birth rate reduction thing.

      Since I'm reading Slashdot and are procreationally challenged, I have taken a keen interest in the subject.

      Here is what I have found:

      http://en.wikipedia.org/wiki/Coitus_reservatus

      "Dr. Alice Stockham was taken to court and forced to give up teaching the practice of Karezza in the United States of America. Like many other of the sex reformers, Stockham was arrested by Anthony Comstock.[23] Comstock was backed by Morris Ketchum Jessup, an American millionaire philanthropist who was a founder of the New York YMCA and the Museum of Natural History. Together, they established the New York Committee for the Suppression of Vice which attracted many prominent, powerful and wealthy Americans including J. P. Morgan. Comstock lobbied in Congress for a stronger federal antiobscenity and antireproductive control law."

      Notice how a selfcentered gang of capitalists just had to let America grow. This happened around the year 1880-90. Some Pope became involved in this some time later joining the growth gang.

      I mean, I don't really mind, this runaway growth thing had to happen some time. Evolution doesn't select for sensible resource usage, it selects for greatest energy input at highest efficiencies. Even the high probability that the majority of mankind ever in existence has to be involved in the resulting extinction phase is obvious since exponential growth just has this multiplicative property.

      Oh, here is a link to the power principle:
      http://en.wikipedia.org/wiki/Maximum_power_principle

      I'm not sure I'm interpreting the Maximum power principle correctly but it feels right. But hey I might be wrong, after all we could "Stand on Zanzibar".

      --
      Je me souviens.
    58. Re:Economies of scale by cpu6502 · · Score: 1

      You have a natural right to children except in cases of emergency. Imagine some future hell where 1/2 billion Americans are fighting over food, water, energy (the oil wells are running dry). The two parents and one kid get the government handouts/rations and kids 2 & 3 get none, because there's not enough to support them. (It's as if the other kids don't exist in the government's eyes.) Sorry but that's the way the future will likely unfold. Guess you should have obeyed the 1 child per couple policy.

      --
      My AC stalker: " I personally agree with your posts most of the time, but that won't keep me from modding you troll"
    59. Re:Economies of scale by roman_mir · · Score: 0

      Whoever has richer parents, duh.

      - good. Survival of the fittest, however that's expressed.

    60. Re:Economies of scale by roman_mir · · Score: 0

      You have a natural right to children except in cases of emergency

      You have a natural right to freedom unless it's war on drugs.
      You have a natural right to freedom unless it's war on terror.
      You have a natural right to property unless it's EPA.
      You have a natural right to life unless it's Obama with a drone.

      RIGHTS, just like the CONSTITUTION are needed more than ever EXACTLY when it's an 'emergency', because I can put you into a state of emergency on a daily basis and deny you the rights so easily, you won't know what hit you, and then you will have no right, 0 rights, and you know what? Judging by your approach and attitude I don't even care. You sound exactly like a person who wants to limit the rights of other people with the power of gov't, in my book that's the only real reason to deprive YOU of your rights.

      The two parents and one kid get the government handouts/rations and kids 2 & 3 get none

      - gov't has NOTHING.

      Whatever gov't 'has' it has to STEAL from people who in fact create that wealth. You'll eventually find out that people's natural instincts to their rights to life and procreation and property will put them at odds with whatever 'government' is, and gov't only exists by the silent cooperation of the crowd.

      I see your approach leading to just another bloody conflict, another civil war, but looks like that's exactly something you'd be all for - why, it'd kill off a few million people.

    61. Re:Economies of scale by Anonymous Coward · · Score: 0

      - good. Survival of the fittest, however that's expressed.

      No, that would be a free market and people trading with real goods and services.

      What we have is survival of the richest, where being "rich" doesn't necessarily mean holding real goods and capital, but just having a lot of fake printed money (or digital bits, or "copyrights" and "patents" that say you own an idea that somehow means you're entitled to compensation whenever somebody uses or even just sees your idea)

    62. Re:Economies of scale by CAIMLAS · · Score: 1

      If you have a problem with population density, please. See: Muslim countries, China, and India. The endemic population in the West and Russia has been dropping steadily (and in some cases, rapidly) for the past 20 years. For instance, at the current rate, Italy and Russia will have no significant 'native Italians' or 'native Russians' left within several generations (both under a birth rate of 1.0 per female).

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
    63. Re:Economies of scale by CAIMLAS · · Score: 1

      I agree on population, except...politicians have made so many promises to deliver goodies to future citizens, that failure to grow population will literally cause a revolution when the money runs out as the the population seriously slows or sinks. Hence the desire by some politicians to want to let in foreigners without going through any supervised immigration process.

      This is precisely what's happening in the West with state-run healthcare and poverty assistance.

      The endemic population in the West has been shrinking for roughly 20 years now, with growth rates slowing markedly since around the 1980s. As affluence goes up, birth rates go down. In order for a welfare state to not collapse under the burden of its own weight it must have a perpetually increasing population. This is why most Western countries now have an "immigration problem" which is largely ignored and/or accepted, despite the social ills it causes in turn.

      Since these governments depend upon a Ponzi scheme for their continued existence, a revolution may not be such a bad idea for everyone involved (including the immigrants).

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
    64. Re:Economies of scale by Anonymous Coward · · Score: 1

      But you have as many problems with logic as you do with the very idea of the individual freedom.

      The very fact that I have conceded that we may not be to the point that I have described says otherwise. Meanwhile, the fact that you apparently have no problem with humanity reaching such a breaking point says you've got some problems of your own.

    65. Re:Economies of scale by Anonymous Coward · · Score: 0

      That argument was also mentioned during the Trojan wars, 3200 years ago....
      The problem is 10% of the people using 70% of all the energy sources.
      Or have fake prophets like Al Gore using as much resources as a small village while flying all over the world in his private jet....

    66. Re:Economies of scale by Anonymous Coward · · Score: 0

      Two reasons:

      1. Hydrocarbon fuels, including biofuels, have a higher energy density than batteries, are easier to replenish, already have all the infrastructure set up, etc.

      2. Enough farmland to produce 1 MW of biofuels may (as you point out) be larger than a solar panel producing 1 MW of electricity, but it's cheaper, which is what counts.

    67. Re:Economies of scale by doctorcisco · · Score: 1

      SS was started because folks too old to work any more simply starved.

      Citation needed.

    68. Re:Economies of scale by dbIII · · Score: 1

      The primary argument against fast breeders is that it's a really expensive 1960s way to deal with the Uranium shortage that never happened. The secondary argument is all that produced weapon material from the fast breeder is not needed any more due to large stockpiles and there are easier and cheaper ways to produce large amounts of plutonium anyway. It was a dead end and nuclear technology has moved on.
      There are things like accelerated thorium that some people call breeders but they are a very different technology - plus there are other reactors that are less fussy about fuel and can even use depleted fuel rods from other reactors. Nobody calls a CANDU reactor a fast breeder, or any of the others that can use expired weapon material.

    69. Re:Economies of scale by Anonymous Coward · · Score: 0

      It doesn't make sense with current biofuel technology. Biofuels from cellulosic stock have great potential though, because we already generate tons of waste biomass. Agricultural waste, remains and byproducts from logging/mills, grass clippings - there are incredibly plentiful, and research is progressing on developing affordable means to turn these stocks into fuel. The vast advantage of liquid biofuel over batteries or hydrogen fuel is that it's a drop-in replacement (or only requires a minimal upgrade) for the millions of vehicles already on the road today.

    70. Re:Economies of scale by Zaelath · · Score: 1

      You could attempt to drill the sun, since most of the "abundant" hydrogen in the universe is stored in stars.

    71. Re:Economies of scale by Anonymous Coward · · Score: 0

      I thought the arguments against breeder reactors were mainly cooling (liquid metal / Na-based) and therefore cost, extreme toxicity in case of any failure (Pu-based reaction) and proliferation - the danger of producing Pu-isotopes for nuclear weapon.

      But please correct me, that's just the standard arguments I keep hearing. I would be fine though with any inherently safe reactor like the proposed TerraPower design.

    72. Re:Economies of scale by roman_mir · · Score: 0

      The very fact that I have conceded that we may not be to the point that I have described says otherwise.

      - no it doesn't. You don't get the numeric advantage and you don't get the fact that you'll have bloody war on your hands with your ideas about forcing people to behave how you want them to behave so you can rule them.

      Even when it takes 40 years or 75 years, eventually people rise up and destroy the dictatorship.

      Meanwhile, the fact that you apparently have no problem with humanity reaching such a breaking point says you've got some problems of your own.

      - I do not impose my view of how people should apply their own rights upon others, I don't want to be a dictator.

      I want free market, where people hit the problems and search for solutions within the context of individual freedom. I am much better person than you.

    73. Re:Economies of scale by roman_mir · · Score: 1

      Again: it's survival of the fittest. 'Fittest' doesn't have to be anything specific, if it means 'richest' so be it.

    74. Re:Economies of scale by Anonymous Coward · · Score: 0

      Again: it's not. "Fittest" may not have to be specific, but you can't just attribute anything you want as "fittest"

      Let's put it in another way: if this was really survival of the fittest, then we would have to call today's governments "fit". Hey, the government can print infinite amounts of money, so they're the "richest". The politicians are surviving just fine, while the middle class is slowly dying. So clearly, the government is fit, the masses are not. That would imply all government regulations are good and wise, since hey - who are you to argue with the people who are the "fittest"?

    75. Re:Economies of scale by Anonymous Coward · · Score: 0

      - I do not impose my view of how people should apply their own rights upon others, I don't want to be a dictator.

      I want free market, where people hit the problems and search for solutions within the context of individual freedom. I am much better person than you.

      Nah, he's a much better person than you. Winners are people who DO want to be dictators and impose their views on others, so things get done their way. Winners write the history books, Winners don't care about individual freedoms. Winners care only about THEIR OWN freedom - to hell with yours if you get in their way

      He's got what it takes to be a lead countries. You... well the best you can hope is lead a company... which will sooner or later get unionized and regulated by people like him.

    76. Re:Economies of scale by mhajicek · · Score: 1

      Domestic wind can produce a fair bit more than solar, and the tech is always improving. I looked back and I don't see a claim that fuel cells are safer, but I will assert that they're much easier on the environment to produce. Lithium mining is a very messy business from what I hear.

      I'm not trying to claim that fuel cells are THE solution, just that they're not a dead end tech as cpu6502 had claimed.

    77. Re:Economies of scale by roman_mir · · Score: 1

      Hey, the government can print infinite amounts of money, so they're the "richest".

      - your understanding of the basics of economics is similar to that of a cricket.

      Printing money does not create wealth, wealth is not currency created out of nothing, it's production output of work that is valued by the market.

      The rich are not those who have the most paper, they are those who have production capacity, so your other point is also clueless.

    78. Re:Economies of scale by Anonymous Coward · · Score: 0

      Read my post again. Notice I put quotation marks around the word richest? That's meant to indicate that I already know printing money isn't wealth.

      But in today's world, it is such people who print money who are surviving.

      Ergo, it's not survival of the fittest. If it was, none of these people who print money would be surviving. You are actually agreeing with my other point.

    79. Re:Economies of scale by roman_mir · · Score: 1

      I don't know what you think you mean and what you think your quotes are and clearly I am not going to bother rereading any of your insane comments.

      Surviving of the fittest is completely relative to the situation, so if the situation is such, that the ones surviving are in possession of something, be it real wealth or a printing press - they are the fittest then at that moment. However I don't think you've seen anything yet, nobody had to REALLY SURVIVE yet and those who are just printing money right now and those who you think are NOT surviving (which is nonsense as well), they are not yet in the position to know whether they ARE in fact fittest or not.

      The people who really are the fittest are those who actually over-produce something that others want and can exchange the fruits of their labour with others.

    80. Re:Economies of scale by Anonymous Coward · · Score: 0

      I don't know what you think you mean and what you think your quotes are and clearly I am not going to bother rereading any of your insane comments.

      Ah, so basically, you refuse to listen to other people or read what they say, ignoring reality, and insist in keep telling yourself what you want to hear?

      I'll just smile and nod as you probably won't read this anyway.

      Surviving of the fittest is completely relative to the situation, so if the situation is such, that the ones surviving are in possession of something, be it real wealth or a printing press - they are the fittest then at that moment.

      No, it is completely not relative. Politicians are not fit by any sane definition. But they survive, often better than most of the masses.

      However I don't think you've seen anything yet, nobody had to REALLY SURVIVE yet and those who are just printing money right now and those who you think are NOT surviving (which is nonsense as well), they are not yet in the position to know whether they ARE in fact fittest or not.

      You think wrong. I have seen history. There is no such thing as REALLY SURVIVE. You just survive. And this happens everyday. Throughout history, you don't have to be the fittest to survive.

      For every Steve Jobs who can over produce and survive, there are dead beats who can't produce jack, but leech off of others and still survive. In fact, such leeches thrive the most when they're purposely destructive, like politicians purposely destroying the economy so they can take wealth away from the over productive people.

      The people who really are the fittest are those who actually over-produce something that others want and can exchange the fruits of their labour with others.

      Again, they aren't the only ones who are surviving. There are plenty of people who are (for the 3rd time) politicians, unfit for whatever task they're assigned to "regulate", who survive just fine. What's more, the average politician is better off than the average guy who over produces, and definitely better than the average Chinese worker who over-produces on a factory floor. I wager the average politician is better off than both you or I, on multiple standards of "surviving"

      Ergo, my point all this time: it is not survival of the fittest. If it was the case, those leeches and politicians won't survive, and the world would be a much better place.

    81. Re:Economies of scale by Anonymous Coward · · Score: 0

      You don't get the numeric advantage

      Actually, I understand it perfectly fine. You feel that your three kids have more of a right to live than my one kid, simply because they out number my kid, and thus can take whatever the fuck they want from my one kid.. You are proposing tyranny of the majority. And it is wrong.

      you don't get the fact that you'll have bloody war on your hands with your ideas about forcing people to behave how you want them to behave so you can rule them.

      As opposed to the bloody war you are proposing? Face it, neither my kid nor myself will let you and your kids hog all the resources for yourselves. And in such a situation, neither of us wins.

      I do not impose my view of how people should apply their own rights upon others

      Yes, you do. You are imposing your view that just because you popped out more kids than I, you and your kids some how have a greater right to live than I and my kid. I am proposing a peaceful solution to the problem of over-consumption, while you would rather we revert to caveman days, where might makes right.

      I want free market, where people hit the problems and search for solutions within the context of individual freedom

      The freedom to swing your fist ends where my face begins. Or put into context, the freedom to procreate ends where popping out another kid threatens the existence of my kid.

    82. Re:Economies of scale by cpu6502 · · Score: 1

      I see YOUR approach leading to Mother Nature stepping-in and millions of people dying from starvation. Wouldn't it make sense for human beings to voluntarily limit population, rather than let the cruelty of nature do it?

      --
      My AC stalker: " I personally agree with your posts most of the time, but that won't keep me from modding you troll"
    83. Re:Economies of scale by HArchH · · Score: 1

      How sustainable is the level of the upper lack? Does it have a constant source that exceeds the draw to drive the 20KW turbine? Does the lower lake have an open drain? Is there any impact on the biological conditions in the two lakes (different animal or plant populations, different chemical compositions between the lakes) that the connection is changing?

    84. Re:Economies of scale by MrKettlePot · · Score: 1

      Social security was made as a short sighted reactionary move to combat the effects of the great depression in 1935. The country was on the brink of collapse and FDR managed to get the government to support the poorest, and hardest hit Americans. While taking care of the poor and needy is a noble goal, the effects of that decision have propagated down from generation to generation. The first generation who received this service this treated it as emergency relief during a time of crisis. It has since evolved into a permanent support system people plan to use. Having an emergency relief fund is a great plan. Teaching people that they do not need to try to save their money because they will be able to rely on payments from the government is a terrible plan. In economic terms, it incentivises NOT planning for retirement for the poorest of Americans. The poorest Americans are the ones who need to learn to be the MOST fiscally responsible. Pretending that it is impossible to save money at a minimum wage job is tantamount to telling the lowest income bracket that they can't save money and so shouldn't try. Having a low income job for an entire life means you should have fewer things and live in a smaller building. Only a true consumerist would believe that a bigger house or more things are necessary for life. Having fewer things, living in a smaller building with other people and saving money is still a viable option for people who are responsible with their money. Never the less, this is very difficult, and we do not reward it. In fact, the government punishes responsible lower income people by rewarding the least responsible. There are long term implications for these decisions that are much more convoluted than feeding poor people when they are hungry. We have placed the burden of fiscal responsibility and financial self discipline on the government, eroding the socioeconomic incentives that encourage us to save and be responsible. People who are starving do not need a monthly check, they need a good meal, a place to stay, and a hand up.

    85. Re:Economies of scale by roman_mir · · Score: 1

      You feel that your three kids have more of a right to live than my one kid, simply because they out number my kid, and thus can take whatever the fuck they want from my one kid.. You are proposing tyranny of the majority. And it is wrong.

      - your words were something to the tune of murder (well, either my kid gets food, or your three kids get food. And like fuck I'm letting my kid starve"). I have every right to self-defence from murdering thugs like you.

      AFAIC you are a murdering tyrant, and I am the proponent of freedom, case closed.

    86. Re:Economies of scale by roman_mir · · Score: 1

      None of your business.

      It is none of your business what other people decide to do with themselves. It is not your life.

      You are completely free to limit yourself to whatever, you are absolutely outside of your boundaries telling people how you want them to behave.

      You also don't understand simple economics - with more demand and with enough freedom there will be more supply, it's the law, it's not up to negotiations.

    87. Re:Economies of scale by Anonymous Coward · · Score: 0

      I have every right to self-defence from murdering thugs like you.

      You're not really this dense, are you? The only reason I am a "murdering thug" is because your actions threaten my kid's life. My kid is starving because what little food is available is going to your kids, and there's nothing left over for my kid.

      You may have a right to self defense, but I have every right to protect my progeny from selfish pricks like you who threaten our very existence by the over-utilization of our limited resources. It's just a real shame you're so stubborn and set in your ways. We could have avoided all this conflict if we'd just agreed to limit our birthrates. Instead, you decided to be a selfish prick and just had to pop out one more kid.

      I am the proponent of freedom

      No you aren't, you are the proponent of an arms race that has no winners. Tell me, how would you feel if the shoe were on the other foot? If you were the one with only one kid and I had three hungry mouths to feed? Now your one kid is the one starving because there's no food left over after my three use what they require.

      Again, I am not saying we have reached this tipping point. But unlike you, I do not desire us to ever reach that tipping point. And for that, I truly feel sorry for you.

    88. Re:Economies of scale by roman_mir · · Score: 1

      I am a "murdering thug" is because your actions threaten my kid's life.

      - no, you are a murdering thug because that's the starting point for you. You can't understand simplest of things, that with the actual freedom, free market, people do provide for themselves and we have seen the population near quadruple in 100 years and we know that the ONLY reason that there are starving people out there are governments that prevent people from working, trading freely, applying themselves in ways that governments are dead set to prevent from happening in order to protect their power and their friends.

      My kid is starving because what little food is available is going to your kids, and there's nothing left over for my kid.

      - no, you dumb schmuck. If your kid is starving it's because you are voting for free stuff to be given to you by the government, and thus you are destroying the freedom that allows the people to provide for themselves.

      The more people there are the more demand there is, the more supply is created, because there is new profit to be made (and that's why profit is a virtue all in itself, whoever is making profit is basically improving the world unlike 99% of anybody who is not making a profit).

      Your ideology is to have government control the people in a totalitarian fashion, which prevents them from building new stuff, coming up with new ideas and companies and supply for all that new demand, and then you want the gov't also to give you something? Gov't doesn't have anything it doesn't steal from the people who produce, but if you are going to impose the totalitarian control, there will be NO production capacity and distribution channels available to satisfy that demand, so your entire ideology is leading to the very outcome that you are so afraid of and you are absolutely blind not to see it.

      You may have a right to self defense, but I have every right to protect my progeny from selfish pricks like you who threaten our very existence by the over-utilization of our limited resources.

      - whatever. I already said everything about this in the last paragraph.

      . It's just a real shame you're so stubborn and set in your ways. We could have avoided all this conflict if we'd just agreed to limit our birthrates. Instead, you decided to be a selfish prick and just had to pop out one more kid.

      - you bet I am selfish. I am looking out for myself, but that's your best bet - let the people be selfish and look out for themselves and they'll be searching for profit and doing all sorts of work that brings profit to them, and this includes creating all those things that you think your kids need.

      Your problem is your absolute lack of understanding of economics. 0 understanding of it, no surprise there of-course, modern day 'edumacation system' does that to a person.

      If you were the one with only one kid and I had three hungry mouths to feed? Now your one kid is the one starving because there's no food left over after my three use what they require.

      - I wouldn't be trying to impose the totalitarian crap on anybody and I would gladly allow for people to make profit producing all that supply that my kids might then use. See how easy it is to avoid conflict? It's called free market.

      Again, I am not saying we have reached this tipping point. But unlike you, I do not desire us to ever reach that tipping point. And for that, I truly feel sorry for you.

      - it's funny, I also feel something, but it's not what you feel. I feel sorry for myself for having to tolerate idiots.

    89. Re:Economies of scale by Anonymous Coward · · Score: 0

      What we need is less people

      You first.

    90. Re:Economies of scale by Anonymous Coward · · Score: 0

      Well, the reactors are extremely costly for one. Granted they provide enough energy cheaply enough one could say they earn it back. The problem is storage of spent fuel. Over time, the problem will be "what do we do with this stuff"? Sure, a nuclear rod or two isn't a problem, but if we were to convert all energy production to nuclear, we would be wondering how come all our kids are green. Storing nuclear waste for thousands of years is just not practical in any sense. Destroying it seems impossible, sending it to space/the sun is very costly and also very dangerous. So, the waste is an issue and certainly has costs. With oil, we just pump it into the air and we get the pleasure of breathing it but with nuclear, the waste is too toxic (so is oil in larger quantities ala global warming) to slow release, move around or do anything with it. I'm no nuclear expert, but as far as I have seen there are many costs associated with nuclear energy... unless of course you are selling nuclear power... then all is roses... just ask tepco lol.

      Personally, I used to think nuclear was the answer.... but honestly i don't see it as a viable solution anymore. Wars, greed, natural disasters, and sheer chance simply make it too dangerous for the long haul. If we can make one in space, and beam the energy down to earth then maybe ill reconsider but for now, nuclear is just not a cost effective solution.

    91. Re:Economies of scale by Qzukk · · Score: 1

      there will be more supply, it's the law, it's not up to negotiations

      Where is that supply going to come from? Claims of infinite productivity (given enough technological advance) ring hollow. There isn't an infinite supply of oil, there isn't an infinite supply of farmland, there isn't an infinite supply of anything.

      What will actually happen is that as demand outstrips supply (exponentially, as population curves are wont to grow) the price will rise sharply and the population will collapse whether you want it to or not.

      --
      If I have been able to see further than others, it is because I bought a pair of binoculars.
    92. Re:Economies of scale by Anonymous Coward · · Score: 0

      You still don't understand.... Earth is finite. That means there is a guaranteed upper limit on the number of humans that it can handle, if for no other reason than there is a limit to the number of people who can physically fit on/in this planet.

      and we know that the ONLY reason that there are starving people out there are governments that prevent people from working, trading freely, applying themselves in ways that governments are dead set to prevent from happening in order to protect their power and their friends.

      I am well aware that the current hunger problem is one of distribution. That says nothing about some point in the future where there is nothing left with which to create more food, and where no amount of redistribution will fix things.

      more supply is created

      As I'd just stated, I am dealing with a point in time where you can't create more supply because there is nothing left with which to create more supply! It's all used up! I make no claim of knowing when we might reach such a point, but the fact that earth is finite guarantees that it is possible to reach such a point if we aren't careful.

      you want the gov't also to give you something

      Ok, now you're just making shit up. If you're going to resort to making shit up, then this discussion is over.

    93. Re:Economies of scale by roman_mir · · Score: 1

      You still don't understand.... Earth is finite. That means there is a guaranteed upper limit on the number of humans that it can handle, if for no other reason than there is a limit to the number of people who can physically fit on/in this planet.

      - more nonsense.

      Again: don't stifle the market and stop with your totalitarian bullshit, you are too stupid and shortsighted to be able to dictate to the people. We build skyscrapers and we can have flying and floating and underwater cities with multiple levels, for all I know.

      We could dig into the planet and build above it. We could build levels of space cities if we needed.

      There are all sorts of things that neither you nor I can predict that would happen should humanity be left alone and not be ruled by the tyrants, and people would just do what they always do: create more supply and solve problems.

      I am well aware that the current hunger problem is one of distribution. That says nothing about some point in the future where there is nothing left with which to create more food, and where no amount of redistribution will fix things.

      - it's always the same problem.

      People always look for ways to make profit, and tyrants are standing in the way.

      Profit is the virtue, the most virtuous thing that most people can ever hope to do, because profit is approval by the people of whatever activity. Profit is what tells us that we are doing the right thing by the market, but it must be free market, otherwise wrong signals can lead us in the wrong direction (so profit achieved during a stock or a housing bubble or a money bubble is a response to government meddling with the market and it's not solving a real market need).

      PROFIT is the ENGINE that will DRIVE the people to find new ways to provide supply where YOU cannot even IMAGINE what the problem is in the first place, the solution will be found.

      As I'd just stated, I am dealing with a point in time where you can't create more supply because there is nothing left with which to create more supply! It's all used up! I make no claim of knowing when we might reach such a point, but the fact that earth is finite guarantees that it is possible to reach such a point if we aren't careful.

      - trillions and trillions of years from now, when all of the stars die off you will finally be right.

      Until then you are wrong.

      There is no such thing as "nothing left", the only place where there is nothing left is your head. People will create supply, people will substitute one supply with another, they will create products even if all they can manage to collect is some sunlight and dirt. Just because you don't understand this basic concept means you are not one of those who will achieve profit, but hey, not everybody is really going to anyway. Some are just ballast, but even ballast is needed to keep the ship steady.

      Ok, now you're just making shit up. If you're going to resort to making shit up, then this discussion is over.

      - I don't make shit up.

      I'll quote you yourself right back, see if it sounds familiar:

      We could have avoided all this conflict if we'd just agreed to limit our birthrates. Instead, you decided to be a selfish prick and just had to pop out one more kid.

      - you are talking about "all agreeing to limit birthrates".

      But your REAL meaning is: government mandating this, and that means you want gov't to give you something.

      I KNOW you want a gov't mandate even if you didn't think about it at first, it's what happened in China - they had a gov't mandate. Most people didn't agree to this voluntarily obviously.

      Anyway, do what you need to do and I'll do what I need to do.

      Cheers.

    94. Re:Economies of scale by roman_mir · · Score: 1

      Where is that supply going to come from? Claims of infinite productivity (given enough technological advance) ring hollow. There isn't an infinite supply of oil, there isn't an infinite supply of farmland, there isn't an infinite supply of anything.

      - that's right, there isn't an infinite supply of anything, that's why we substitute and go further.

      150 years ago you could have said the same thing about whale oil - the whales were going extinct. Then people switched to our current form of energy.

      FREE people will figure out supply as long as gov't keeps its hands off the market. Supply of oil is not infinite, so we will switch to other forms of energy eventually anyway, but we will switch and thus we will have supply.

      Supply runs the economy, not consumption, production. Without production there can be no consumption and if we do not allow the market to be free, then we CAN stop this process and prevent supply from being developed and then there will be starvation.

      What will actually happen is that as demand outstrips supply (exponentially, as population curves are wont to grow) the price will rise sharply and the population will collapse whether you want it to or not.

      - sure, if we just relied on nature to provide, that is what would happen. But we do not rely on nature to just hand us new stuff, we are actively looking for new stuff, that's how we are different from other animals.

      Nuclear power is going to be used one way or another to offset the diminishing supplies of other forms of energy, it doesn't have to be uranium either.

      Then it could be thermonuclear at some point. We will have our supply as long as we understand that people need to be free to try and develop it.

    95. Re:Economies of scale by Anonymous Coward · · Score: 0

      we do not rely on nature to just hand us new stuff, we are actively looking for new stuff, that's how we are different from other animals.

      Yup, that's exactly why tyrants always win in the end. Tyrants aren't animals either. They are actively looking for new stuff too, stuff that help them oppress you.

      History is simply going back and forth between free people building new stuff, and tyrants taking over to have fun with that new stuff.

      History also shows the tyrants get to have more fun. They do crazy awesome shit like build pyramids and the great wall, kill millions, force people to the moon even though there's really no economic sense to do so, etc.

      So frankly, you're a sucker if you want to be a free person. You should always aim to be a tyrant

    96. Re:Economies of scale by Qzukk · · Score: 1

      we do not rely on nature to just hand us new stuff, we are actively looking for new stuff, that's how we are different from other animals.

      Food isn't fungible. You can argue that without government invention we'll all be able to eat Soylent Green (but we don't have to like it), but there's still the matter of acquiring the amount of biomass required to keep everyone alive.

      --
      If I have been able to see further than others, it is because I bought a pair of binoculars.
    97. Re:Economies of scale by roman_mir · · Score: 1

      Food is pretty fungible actually. You can replace meats with all sorts of other things, I haven't touched meat for near 20 years now (nor fish nor eggs). Growing plants is really fairly simple, especially when compared to growing large livestock.

      People are constantly looking for solutions that allow them to grow more food in tighter spaces with less waste, etc., it's one of our most important endeavours.

    98. Re:Economies of scale by dmatos · · Score: 1

      The two lakes are basically on the Canadian shield. There was already a stream running between the two of them. The resort has been operating this turbine for tens of years with no significant change to the lake levels.

      I suppose it's possible that the turbine may have decreased the flow rate of the stream.

      --

      It may look like I'm doing nothing, but I'm actively waiting for my problems to go away.
      --Scott Adams
  3. What? by ledow · · Score: 1

    When total energy required on the order of TWatts, you want to boast about 18GWatt being more than EVERYTHING already out there, hydro-wise?

    No. Really. The ecological damage for that pittance of power just isn't worth it.

    1. Re:What? by Colonel+Korn · · Score: 5, Insightful

      When total energy required on the order of TWatts, you want to boast about 18GWatt being more than EVERYTHING already out there, hydro-wise?

      No. Really. The ecological damage for that pittance of power just isn't worth it.

      You're doing it wrong. You need to look at opportunity cost and give more than a vague comparison. The correct question from an environmental perspective is, "How does the environmental impact of 18 GW of micro-hydro compare to the environmental impact of the 18 GW of power that will be generated through other means in its absence?"

      You fall into the trap of thinking any solution that isn't a silver bullet is useless. Sadly, this is how most decision making is done. Hell, your comment is probably better reasoned than most energy decisions made by governments in the form of legislation or about governments in the form of voting.

      --
      "I zero-index my hamsters" - Willtor (147206)
    2. Re:What? by vlm · · Score: 1

      and/or the environmental impact of making the economy 18 GW poorer. So... now we have less profit, so we can't afford to donate to the nature preserve fund, and people can't afford environmental luxuries if they can't eat, so lets just pave over that swamp, I mean wetland, instead of making it a nature preserve.

      Supposedly economic activity creates environmental damage. But I drive thru nice suburbs and slums in my commute, and the slums are literally an open air dump. Somehow I don't think growing slums is an environmental cure all.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    3. Re:What? by jmorris42 · · Score: 3, Interesting

      > When total energy required on the order of TWatts, you want to boast about 18GWatt...

      This. If hydro is currently producing 6% of our electricity, increasing that by 50% gets you all the way up to 9% but the cost in construction and maintaining so many small installs will dwarf the benefit. To borrow someone else's phrase, "Electricity rates would necessarily skyrocket."

      > The ecological damage for that pittance of power just isn't worth it.

      While I do agree in this case, note that the enviros ALWAYS say the ecological damage isn't worth it. ALWAYS. Since they cry wolf so regular most normal folk have taken to discounting claims of enviromental harm. Enviros really should consider that and instead of opposing everything every time tell us what they are FOR.

      Me, I say build the crap of nukes and convert fleets to natural gas.

      It would be a case where the government could make a positive impact and NOT be exceeding their legal bounds. If all large government fleets went natural gas every service station would quickly add the ability to sell to them without any mandate or tax breaks needed. Imagine every new school bus, city bus, police car, etc. converting. Every one of those vehicles stopped needing gas it would relieve a lot of pressure on crude prices AND on our strained refining capacity. Then we could think about the big rigs.

      As for nukes, we should be building them. New safer designs so we can retire the current units which were less safe than a modern design before we have operated them far beyond their original service life. Which design is best? Who knows, so have a bake off and pick a half dozen different designs and build some. Dump some R&D into thorium, if only to get those people on board. Right now electric vehicles are just indirect coal burners, get enough nuke capacity onto the grid and they make a lot more sense. Now if we could just get the battery tech up to scratch....

      --
      Democrat delenda est
    4. Re:What? by ceoyoyo · · Score: 1

      What ecological damage? You mean the "damage" of there being a lake there? Maybe we should drain all the natural lakes because they're all causing "damage?"

    5. Re:What? by mk1004 · · Score: 1

      Good point. People who believe that, say, solar cell production doesn't cause environmental issues are just kidding themselves. I favor approaching energy needs with multiple solutions. Yes, you get lots of different environmental impacts, but you don't concentrate them into a small number of huge impacts. We won't run out of oil and gas for a long time, but at some point, it'll be too expensive to try to keep up with current output. Better to use diverse energy sources, improving efficiency and reducing environmental problems as we go along. Silver bullets should be saved for werewolves.

      --
      I can mend the break of day, heal a broken heart, and provide temporary relief to nymphomaniacs.
    6. Re:What? by wagnerrp · · Score: 1

      TW, singular, not plural. Our current electrical production capacity in the US is right at about 1TW, with yearly average consumption running roughly half that value. That's 2% of our peak output, or 4% of our average, and they're only talking about capacity in the state of Kansas, a particularly dry and flat state generally not considered at all conducive to hydroelectric generation.

  4. Anything but fossil fuels by ericloewe · · Score: 4, Insightful

    Until everyone realizes that the only short/medium term solution is nuclear, we'll need everything we can get that isn't fossil. Especially coal, but natural gas isn't much better.

    Oil won't get much cheaper anytime soon, and will probably get more expensvie. If that happens, this kind of project will be much more appealing.

    1. Re:Anything but fossil fuels by Anonymous Coward · · Score: 0

      So you are one of those folks that think that fossil fuels are the worst thing man kind has ever came up with. This type of project is more unappealing in environmental feedback than most fossil fuel based projects. There are very few solutions that can actually balance the power needs that we desire versus the energy output of the various solutions and their consequences. Right now, Micro-wind farms and Solar projects are the only type of energy plants that we should be investing in.

    2. Re:Anything but fossil fuels by Anonymous Coward · · Score: 0

      Right now, Micro-wind farms and Solar projects are the only type of energy plants that we should be investing in.

      Why, because you own stock in lulzy "green" companies?

    3. Re:Anything but fossil fuels by Anonymous Coward · · Score: 1

      Why exactly is natural gas not much better? Cleaner burning than coal or refined products, we have the delivery infrastructure in place and we have massive reserves of it in the US. Hydro power is one of the least eco-friendly sources of power we've used. It has caused broader and more quantifiable negative effects to species than oil, gas, coal or nuclear methods. Oh, it doesn't produce CO2, it simply directly destroys environments.

      Oh, sorry, you were talking out of your ass. Continue.

    4. Re:Anything but fossil fuels by ericloewe · · Score: 1

      Solar and Wind will never meet our energy demands unless we start using a lot less power than we do now. That doesn't mean we shouldn't use them, it just means we need other stuff.

      Medium-scale hydroelectric might not be very good, but small-scale implementations that take the environment into account and keep the impact to a minimum can help.

      And yes, I do think fossil fuels are one of the worst things we've done, and that we should reduce their use as much as possible.

    5. Re:Anything but fossil fuels by Anonymous Coward · · Score: 0

      You are stating that as a fact. That the solution is to generate more power. Another (semi) factual solution is that people use less energy. Less 2000 mile airplane rides, less hot water, less computer time, dimmer lights. Oh, wait a minute. One months electrical consumption by one aluminum plant or one Space Shuttle Launch (remember those) each used a fair %age of the total residential energy consumption of the USA.

      Higher energy costs would address the issue in it's entireity. (while impacting the poor quite a bit).

      Back to the solution is to generate more power. Power consumption, too cheap to meter, compared to crack cocaine:

      Legalize drugs/crack? some have observed it is already cheap, $10 for a few hours of use. This gives little financial incentive to a high percent of the population to not use (once they start) or to not use a lot.

      Cheap computer processing power and or memory: This gives little incentive for software designers or end users to be economical in their use of computer computing resources. Programmers and end users have always been very happy to gobble up any increase in computers computing resources.

      I propose the same with energy: end users will always demand more, cheaper. Eventually, maybe when we run out of oil, or run out of uranium, or run out of sunlight, or run out of something, the supply will not meet the demand. We have already run out of frugality.

      too lazy to register

       

    6. Re:Anything but fossil fuels by ericloewe · · Score: 1

      Gas is better than oil, but doesn't solve the underlying problems: emissions and limited (very large, but limited) supply.

      I'm pretty sure a natural gas power plant can do more environmental harm than a well-planned hydroelectric installation.

    7. Re:Anything but fossil fuels by ericloewe · · Score: 1

      I'm all for efficiency. I never said we should generate more power, only that we should generate more power from non-fossil sources.

    8. Re:Anything but fossil fuels by Anonymous Coward · · Score: 0

      welll - lets see
            Hydro damages fish stocks
            PV - needs storage & takes up to much space - transmisson lines are a no no
            wind mills kill birds
            coal - well CO2 & radation
            natural gas CO2 & radation
            Those old nukes should all be shut down
            The new nukes - my god no way - think of the radation - we will all die
            So I guess we freeze in the dark!!

    9. Re:Anything but fossil fuels by ericloewe · · Score: 1

      Just in case someone doesn't pick up on the irony: http://xkcd.com/radiation/

    10. Re:Anything but fossil fuels by Anonymous Coward · · Score: 0

      Ken Lay (of Enron fame) killed new nuclear plants in his deregulation idea. In a deregulated area you have generators, transmission companies, and retailers. All are distinct entities. Assume you are a retailer. Your interest is to get power at the lowest cost possible, so you can undersell the competition. So would you sign a contract before the nuclear plant is built that will have an unknown cost of power when it is eventually finished. Consider that a large part of the stranded costs involved in deregulation come from existing nuclear plants for example. Now assume you are a generator and want to build a nuclear plant, you probably need some committed customers to get the loans to build the plant. No long term contracts no loans. Gas plants are far quicker to build and with the futures market nat gas prices can be hedged for a few years ahead. So a retailer would be better off with the gas plant. Now were the old style of electric supply (unified generation, distribution and retailing) is still in place the power company can shove the cost of the nuclear plant onto the ratepayers since the regulator allows it to earn a percentage of its invested capital.
      As an example the plans to build units 3 and 4 of the south Texas plant took their first hit when the San Antonio municipal utility pulled out (it is still an integrated entity), the project was on life support until the Japanese Earthquake last year when the Japanese (Tepco of Fukisima fame)company that was funding the work had to drop out, so for now the project is dead.

  5. Re:something about reservoirs by fuzzyfuzzyfungus · · Score: 3

    ...and their environmental effect.

    I suspect that, in a situation where fossil fuels are becoming scarce, you'd quite rapidly see people's interest in the environment shrink to one a simple question about every object around them: "Am I better off eating this or burning this?"

  6. Maggie Koerth-Baker is an idiot by ShieldW0lf · · Score: 2

    The age of massive hydroelectric power installations is only beginning. It most likely won't be dominated by Americans, but it will dwarf that which exists now.

    --
    -1 Uncomfortable Truth
    1. Re:Maggie Koerth-Baker is an idiot by vlm · · Score: 1

      Regarding the subjectline, I was surprised that a google search indicated via linkedin that she lives in Minnesota. I would have guessed California. Usually you hear people trash talking hoover dam because they live out west where water is scarce, and hoover is "legendary" for being pretty close to running out of water and having to shut down "soon", therefore since the whole world revolves around CA, that means all hydroelectric plants will be shutting down soon.

      Out east we have more water than we know what to do with, and she's close enough that you'd expect her to know that and laugh at the CA and NV people.

      Admittedly, since govt and corps have merged, lots of stupid things are done to maintain power. I would not be surprised if most of the new hydro sites will be built in bone dry deserts as a jobs program, rather than where an engineer would put them to get maximum power...

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    2. Re:Maggie Koerth-Baker is an idiot by Bob+the+Super+Hamste · · Score: 2

      Well depends on where in Minnesota she is. She might be living out in the norther suburbs of the twin cities and because one of the major lakes there is shrinking thus she might think that all the lakes are drying up. Here in Minnesota we have plenty of water even in the drier areas in the south western part of the state where still have lots of smaller lakes, streams, sloughs, and swamps.

      --
      Time to offend someone
    3. Re:Maggie Koerth-Baker is an idiot by Anonymous Coward · · Score: 0

      Actually if you look at the upper Mississippi and Ohio rivers you find navigation dams on them where water spills over the face of the dam. Plans are being made to put generators beside the dams and run the rivers thru the generator in essentially what is called a run of river system.Partly up till now these had not been considered since the rivers are in the middle of coal country, and so coal was cheap and nearby. But since they have to get the coal from Wyoming, since the local coal is high sulfur the economics changed.

        In addition of all places there is now a hydro plant at the old river control structure where the Mississippi and Red rivers meet in Louisiana, that is a 192 mw plant

  7. Sane summary? by MSesow · · Score: 1

    I am a little surprised to see "could small hydroelectric power be a key solution" instead of "could small hydroelectric power be the key solution". Surprised, but happy! It makes me feel like I am reading something with thought behind it, instead of a supermarket tabloid.

  8. I know of existing dams... by dthanna · · Score: 3, Informative

    I know of existing dams in the US - several on the Rock River (north-central Illinois, U.S.A.) - Rockton, Rockford, Dixon, Byron, Sterling/Rock Falls, etc. that were built years ago by Commonwealth Edison for min-hydro power. The dams are still there to provide floodwater control, but have been decom'd for electrical generation.

    Last time I looked, the dam in Dixon station still had generators in operation. http://en.wikipedia.org/wiki/Rock_River_(Mississippi_River)

    Now, I'm no civil engineer.. but if you already have a dam, and the environmental impact associated with it, why not us the head you have to generate some? Yea, your not getting the 200-300' head that you would like, but there is still a lot of potential energy to be captured out of the 20' 30' head out of one of these.

    1. Re:I know of existing dams... by Anonymous Coward · · Score: 1

      Now, I'm no civil engineer.. but if you already have a dam, and the environmental impact associated with it, why not us the head you have to generate some?

      I ask my local government figureheads this question at every opportunity. (My home state also owns several decommissioned hydro sites with existing dams and raceways.) The elected corporate tools always tell me to email their office and they will get back to me with an answer. Not one of them ever has, although I've done this for many years.

      I suspect the answer is that anything that will impact entrenched existing powers is forbidden.

  9. Idiotic Leading Questions in Summaries by Anonymous Coward · · Score: 5, Insightful

    Dear editors/submitters for Slashdot stories:

    Please eliminate the stupid leading/inflammatory/etc. questions at the end of the summaries. Anyone with an IQ higher than that of a grape has already mentally asked themselves far more insightful questions than the ones posed at the end of the summaries. You are just making yourselves look like idiots by asking them.

    Sincerely,
    An Old AC

  10. Small plants by Anonymous Coward · · Score: 0

    I have found it amazing that so many small plants have been abandoned in this area (Western Oregon). Some were fish blockers some were not.

  11. Short answer: No. by JoeMerchant · · Score: 1

    Energy produced = volume of water flowing * square of the distance drop, cut your vertical drop by 1/2, your power output drops to 25%.

    Interesting corollary with the latest simulator findings on fusion power... it might break even at 26M amps input, it gets really interesting at 60M amps, and better and better from there. It doesn't work yet because we haven't made one big enough yet.

    1. Re:Short answer: No. by necro81 · · Score: 1

      Potential energy varies linearly with height, not with the square of height. Put differently, pressure varies linearly with height, and power is flow rate * pressure, so power varies linearly with height.

      Mathematics aside, even if you were correct, I would say "so what?" If the potential is still measured in gigawatts, then it's probably worth looking into. I'll agree it's not a panacea, but it's something nonetheless.

    2. Re:Short answer: No. by JoeMerchant · · Score: 1

      Potential energy varies linearly with height, not with the square of height. Put differently, pressure varies linearly with height, and power is flow rate * pressure, so power varies linearly with height.

      Mathematics aside, even if you were correct, I would say "so what?" If the potential is still measured in gigawatts, then it's probably worth looking into. I'll agree it's not a panacea, but it's something nonetheless.

      Yeah, I caught myself on that just after hitting "Submit."

      Living in Florida, anytime I have looked into micro-hydropower it is the lack of vertical drop (or pressure) that kills it. For any reasonable water flow rate, I come up with total power figures like 6W.

    3. Re:Short answer: No. by Anonymous Coward · · Score: 0

      Living in Florida you need gators on treadmills for electricity. Better get lots 'tho to recharge all those sweet rides from "The Scooter Store"

  12. Re:something about reservoirs by WillAdams · · Score: 2

    Pennsylvania is trying to decide which of the old small dams should stay and which should go --- focusing on the impact that such obstructions have on fish and eel spawning.

    --
    Sphinx of black quartz, judge my vow.
  13. Contained Hydro by MountainLogic · · Score: 4, Insightful

    There are many places such as irrigation channels where you can place micro turbines that will have no ill environmental effect as these do not support aquatic life. It looks like this was not included in the report. For example see hydrovolts.com/ for a unique hydro generator that does not need a damn. These can even be placed in the outflow from some sewage or industrial plants. Not big power, but lots of places you can wedge these in to add distributed generation into the grid - often at the ends of branches where it is needed the most.

    1. Re:Contained Hydro by Scarred+Intellect · · Score: 4, Informative

      There are many places such as irrigation channels where you can place micro turbines that will have no ill environmental effect as these do not support aquatic life. It looks like this was not included in the report.

      Irrigation canals DO support aquatic life. Where do you think they get the water from? Rivers.

      It isn't necessarily vital aquatic life, but then where do you draw the line on vital vs. non-vital life?

      The canals in Eastern Washington provide me with some of the best bow-fishing for carp in the region. Even the wasteways (surplus water from agricultural processes) have plentiful fish. And not just carp.

      They're basically diverted rivers. That being said, turbines placed in irrigation canals will have less impact than those placed in full rivers. But even the impact of a full hydroelectric facility is manageable. Take the Columbia River, we still have record salmon runs from time to time.

      One other hurdle with hydroelectric is that it is not considered renewable, so if there are mandates to require x% of electricity from renewable sources, hydro ain't gonna fit the bill due to lame liberals that deem is non-renewable.

      Being a fan of hydroelectric power, I'm well aware of the issues on both sides of the argument, and still favor it. But I think what you pointed out on the latter portion of your post needs to be made more public, as it is an even better solution.

    2. Re:Contained Hydro by MountainLogic · · Score: 3, Interesting

      Scarred Intellect, fair enough on all points. Hydro was taken off the the table for counting as a renewable for two reasons. 1) They wanted to encourage new renewables to be built and not just count the old renewables and at the time that meant big hydro damns. Including old hydro in the accounting would have resulted in zero new renewables. 2) At the time the rules were codified, hydro was assumed to mean big damns and a certain end to northwest salmon runs. Technology and understanding evolves and there is always room for reevaluation. That said we have also had some near/true extinctions of a number of salmon runs. Even with hatcheries, the genetic diversity of salmon is not what it should be.

    3. Re:Contained Hydro by QuantumRiff · · Score: 1

      The irrigation canals in southern Oregon cover hundreds of thousands of acres.. but their biggest cost is power, to run pumps.. (pretty flat land) http://en.wikipedia.org/wiki/Klamath_Project however, it looks like they are trying to get some power project put along the canal.. (maybe to offset the costs of pumping) http://www.usbr.gov/mp/nepa/documentShow.cfm?Doc_ID=8142

      --

      What are we going to do tonight Brain?
    4. Re:Contained Hydro by PPH · · Score: 2

      That said we have also had some near/true extinctions of a number of salmon runs. Even with hatcheries, the genetic diversity of salmon is not what it should be.

      But you are making a basic error in your logic here. Its not the salmon run that goes extinct or not. Its the species. The bad science promulgated by environmentalists; that habitat equals species has threatened the viability of a number of species (spotted owls and salmon) and eliminated a number of mitigation measures that could save them.

      Hatcheries are excellent tools for enforcing genetic diversity. Its trivially easy to cross breed salmon populations in hatcheries and plant them in new habitats. And they ensure a viable stock of fish where dams or other development have restricted access to wild habitat. But environmentalists' response has been to attack the health and viability of bred salmon while simultaneously complaining that these (healthier) fish are displacing wild raised fish. That makes no sense. They can't have it both ways to suit the argument du jour (sicklier on the one hand, yet hardier when that claim suits them). And the claim (enforced by the courts as 'science') that hatchery salmon are of a different species than wild ones can only be supported by marking the former by clipping their adipose fins (which cripples them) before releasing them.

      Yes, salmon are losing habitat. But that this was going to happen was understood when the first dams want up. So hatcheries were developed to mitigate the problem. Yes, the first fish ladders and hatcheries didn't do very well. But quite a bit has been learned about managing the resource properly and the fact that healthier hatchery stock is wiping out the sickly wild runs argues for that success.

      Back when I worked for PSE we actually had an environmental group that attempted to plant some steelhead trout upstream of the Snoqualmie Falls power plant. The idea was to demonstrate the hazard that the turbines presented to fish passing through them. Yeah, right. The little fishies will get ground up. But the problem is: there are no migratory fish that could ever hope to return up a 270 foot waterfall. So power plant or not, that population would never have been viable. But they were hoping the public wouldn't notice that little fact.

      --
      Have gnu, will travel.
    5. Re:Contained Hydro by RobertLTux · · Score: 1

      "The idea was to demonstrate the hazard that the turbines presented to fish passing through them. Yeah, right. The little fishies will get ground up."

      and the Brydies that hunt in the river thank these doofies for providing a nice snack for them.

      --
      Any person using FTFY or editing my postings agrees to a US$50.00 charge
    6. Re:Contained Hydro by turkeyfish · · Score: 1

      "But quite a bit has been learned about managing the resource properly and the fact that healthier hatchery stock is wiping out the sickly wild runs argues for that success."

      Wild stocks are far healthier than hatchery stock because they are genetically adapted to their specific habitats. Hatchery stock show very much reduced genetic variability and survival rates of hatchery reared young are lower than in wild stock, and much more susceptible to disease when it does enter hatcheries, because most individuals are genetically more alike. Hatchery stocks tend to be poor in percentage of returns because of lower vigor of young for some species have the potential to create havoc through interbreeding that can lower the success of wild stocks. There are actually very few wildstocks of salmon left on the planet that have not had their original genetics contaminated by non-native stock.

      Now it certainly is true that all stocks are under threat in part to rising water temperatures, changes in food ability associated with habitat degradation, but, however, you cut it, more dams will only dramatically increase these problems.

    7. Re:Contained Hydro by Hatta · · Score: 1

      The canals in Eastern Washington provide me with some of the best bow-fishing for carp in the region.

      Why would you want to fish for carp?

      --
      Give me Classic Slashdot or give me death!
    8. Re:Contained Hydro by Nethead · · Score: 1

      Yes, but those irrigation canals don't have water year round. The water is too managed, someone owns each cubic foot of it. Better the wind farms in Eburg or up on Ryegrass to provide year round power, and even those seem mostly idle the times I drive by. I'd say go for Whoops 3. Another plant at the end of SR24 would do more for the area power than any hydro source could. All the infrastructure is there. Just manage the construction a bit better.

      On a personal note, irrigation canals scare the shit out of me. Too many people getting killed in them (and those that try to rescue them.)

      --
      -- I have a private email server in my basement.
    9. Re:Contained Hydro by PPH · · Score: 1

      Wild stocks are far healthier than hatchery stock because they are genetically adapted to their specific habitats.

      Hatchery stock comes out of the same stream as wild stock. Simply grabbing a random fish out of a stream and raising its offspring in a hatchery do not change its DNA.

      Hatchery stock show very much reduced genetic variability and survival rates of hatchery reared young are lower than in wild stock, and much more susceptible to disease when it does enter hatcheries, because most individuals are genetically more alike.

      Under the old methods, perhaps. But we understand a lot more than we used to about diversity and modern hatchery practices have been modified to correct for this. In fact, its possible (but listen to the environmentalists scream) to cross breed salmon from different streams and introduce more genetic variability than what occurs naturally.

      Some cross breeding does occur naturally. The myth about salmon always returning to their home streams isn't quite accurate. They make mistakes. Quite a few confused ones end up at the foot of Snoqualmie Falls. There are no salmon populations that originate above the falls. And yet they try to return. Its also interesting to see how many salmon will make a brand new irrigation ditch their new spawning ground. Odd, as the ditch wasn't there last year. And yet there they are. Salmon ending up in the wrong stream from time to time is what keeps the species from becoming inbred. But that undermines the environmentalist's claim that every fish is a unique species (more a legal position than scientific).

      Hatchery stocks tend to be poor in percentage of returns because of lower vigor of young for some species have the potential to create havoc through interbreeding that can lower the success of wild stocks. There are actually very few wildstocks of salmon left on the planet that have not had their original genetics contaminated by non-native stock.

      That's saying two different things. First of all, hatchery stock is genetically identical to the stock native to the habitat from which it was captured. And if there were some inherent weakness in hatchery stock, natural selection would correct that problem. But they are doing just fine. So, fine, in fact that they have displaced their wild ancestors (as you pointed out). And since they were harvested from wild stock, they are genetically similar. So what's all this 'contamination' talk about?

      The whole issue that environmentalists have with hatchery fish is that they are successful. And as such, they undermine the argument that habitat loss can't be corrected for by hatchery programs.

      --
      Have gnu, will travel.
    10. Re:Contained Hydro by Scarred+Intellect · · Score: 1

      Because I can shoot them with a bow. That's pretty much it.

  14. The finicky environmentalist by crazyjj · · Score: 5, Interesting

    One of my biggest problems with the environmentalist "movement" (and, in fairness, it's really more a mish-mash of a bunch of somewhat different movements) is its propensity for embracing fashionable fads and then tossing them aside the second some new thing comes along. Hydro was once the darling of clean energy, but then someone started complaining about the poor fish not being able to spawn as good as before, and so it was tossed aside like some embarrassing stepchild--in favor of the current green stars-of-the-moment, wind and solar. This in spite of the fact that hydro has BY FAR the longest and most productive history of any of the green energy generators. There are still working dams out there today that have been generating electricity for close to a century (probably some over a century now).

    Makes me wonder how long it will be before someone finds fault with wind and solar and those get tossed aside for some new fad too.

    --
    What political party do you join when you don't like Bible-thumpers *or* hippies?
    1. Re:The finicky environmentalist by Daniel+Dvorkin · · Score: 4, Insightful

      So you're saying that environmentalists change their opinions as new facts come to light? How dare they? Those flip-floppers!

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    2. Re:The finicky environmentalist by wardred · · Score: 1

      That, and we pretty much dammed up all the good "big hydro" spots already. . .

    3. Re:The finicky environmentalist by Anonymous Coward · · Score: 1

      I already have a fault with wind power in my area. In central Nebraska, we have a "Wind Power" movement. At a recent meeting/rally of "greenies", I stood up and asked what would happen after the first Spring, if/when the wind turbines killed several hundred migrating Sand-Hill Cranes. The room was silent. Next fad.

    4. Re:The finicky environmentalist by vlm · · Score: 1

      Its a fashion choice rather than an engineering choice. Oh look, pink skirts are "in" this spring. No wait, throw those out, the new "in" thing is blue lacy skirts.
      If it was based on carefully reasoned decision making, then it would be wise of them to re-evaluate, but its the green equivalent of watching the Style cable channel therefore not respectable.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    5. Re:The finicky environmentalist by Chris+Burke · · Score: 2

      Hydro was once the darling of clean energy, but then someone started complaining about the poor fish not being able to spawn as good as before, and so it was tossed aside like some embarrassing stepchild--in favor of the current green stars-of-the-moment, wind and solar. This in spite of the fact that hydro has BY FAR the longest and most productive history of any of the green energy generators.

      Yes, I'm rather embarrassed myself to admit that for a long time I completely ignored the rather huge amount of habitat destruction a hydro dam represents. Habitat destruction being the biggest, most immediate conservation problem. Are you really shocked that "Hey,let's block up the rest of our waterways!" isn't a rallying cry for environmentalists?

      Makes me wonder how long it will be before someone finds fault with wind and solar and those get tossed aside for some new fad too.

      They already are known to have faults. Wind's impact is pretty light, and bird fatalities that were a problem in some early farms have been largely eliminated (as in, made insignificant compared to building strikes and cats). Bats are still a problem, though, and it's not a very well understood problem as of yet either.

      Still, wind and solar are two of the 'greenest' options at the moment.

      "Do the best thing we know how to do today, and do something better if and when we discover it" is a fairly rational stance for anyone, is it not?

      --

      The enemies of Democracy are
    6. Re:The finicky environmentalist by Anonymous Coward · · Score: 0

      The number of birds kill by wind power seems large, but it is dwarfed by the number of birds killed by other sources:

      http://science.howstuffworks.com/environmental/green-science/wind-turbine-kill-birds.htm [science.howstuffworks.com]

      Don't choose energy sources based on what's new and fancy. Choose them based on what fits your country the best. For some countries, geothermal power performs best (Iceland), for others it is hydropower (Norway), and for others wind power or solar power may be optimal. If none of those options are efficient, hope that a new "fad" comes up which is more efficient for your country.

    7. Re:The finicky environmentalist by Daniel+Dvorkin · · Score: 0

      Kind of like how reflexively bashing environmentalism is in style among certain segments of the population? Got it.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    8. Re:The finicky environmentalist by Anonymous Coward · · Score: 0

      Wind? We can't have wind power anymore because it'll kill all the birds, didn't you get the memo?

    9. Re:The finicky environmentalist by Bigby · · Score: 1

      Hydro is by far the best out of all energy generation we use today. A nuclear plant can't last that long, has direct fueling costs, and low maintenance. A dam just has HUGE upfront real estate costs. Or in the case of Niagara Falls (4.4 GW), flow changes to a natural wonder.

    10. Re:The finicky environmentalist by CAIMLAS · · Score: 1

      That's why I'm not an environmentalist, by any stretch of the imagination. Neither are most "sportsmen" or other people who actually spend a significant part of their lives outdoors.

      They're conservationalists. The general idea is the same, but they're not slack-jawed breathers who occasionally froth at the mouth, they're actually approaching the problem from the reasonable perspective of "let's not make assumptions, embrace what we know, and make only small and potentially reversible changes".

      Environmentalists are the ones which introduce predators to environments in the hopes of eliminating an invasive species, which then destroys the environment. Don't be an environmentalist, it's a legacy with many bodies along the road.

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  15. You wouldn't want it to come to this... by fuzzyfuzzyfungus · · Score: 1

    One convenience of small hydro projects is that(if you are willing to accept lousy efficiency) they can be built with quite minimal technological resources. The hydraulic and mechanical side is classical era stuff and bolting on the electric half is 19th century physics and engineering.

    Larger systems demand substantially greater architectural expertise, if you don't want them to collapse a lot...

    1. Re:You wouldn't want it to come to this... by ColdWetDog · · Score: 1

      It may be simple, but it's not cheap. I live in SE Alaska, 100+ inches of rain per year. Steep fjord like valleys (actually they are fjords). So long as nothing is screwing up, we get 100% of our electricity from hydro. We have two generators, an 18 MW and a 10 MW system. Generators are several million dollars a pop. We have a plan to increase dam height to generate another 10 MW - at close to $100 million in costs (some if which will be used to replace 50 year old equipment).

      That's a lot of money.

      Cheaper than diesel, in the long run but requiring a large up front payment. Small cities / towns can't afford this sort of thing without significant state and federal money. We can't even bond out that kind of money because the tax base isn't there.

      And this is in a pretty good case scenario. Not best case - construction costs are high because it's remote and the geography and geology works against you, but that's life....

      --
      Faster! Faster! Faster would be better!
    2. Re:You wouldn't want it to come to this... by turkeyfish · · Score: 1

      The problem of course lies not in the 19th century physics and engineering, but rather the 19th century accounting of all the environmental costs (to people).

    3. Re:You wouldn't want it to come to this... by jmorris42 · · Score: 1

      > Small cities / towns can't afford this sort of thing without significant state and federal money. We can't even bond out that kind of money because the tax base isn't there.

      Hmm. I'm about as anti-tax as ya get but here I go. I read that statement and hear the marketplace saying you guys need to raise yer revenue to a point where you can buy your own darned electrical capacity instead of asking everyone else to subsidize your lifestyle. Either through property taxes or jacking electric rates you folks should be paying for what you need yourselves. There are many positives to living in a remote location, I don't have to tell you those as you decided to live there, but there are also negatives that raise the cost of living. YOU should be the one paying those costs.

      It is millions of cases like yours that has driven us to the brink of insolvency. Everybody wants to have their subsidy so they can do something that makes little economic sense but dammit they want it. Of course now that we have reached the point where everybody is getting a subsidy for something it means everybody is paying... or borrowing from China, and the whole system is breaking down.

      --
      Democrat delenda est
  16. Re:something about reservoirs by MozeeToby · · Score: 4, Insightful

    Also, smaller dams means smaller, shallower reservoirs. Which in turn means that they tend to silt up pretty quickly.

  17. Think of the fish by Anonymous Coward · · Score: 0

    Dams have a pretty spotty ecological track record, don't they? Makes it harder for fish to migrate, screws with water tables, and when they're end-of-lifed, nobody wants to pay to take them down.

  18. Irony by cpu6502 · · Score: 1

    My state government just spent millions removing dams, in order to restore the natural ecology of the streams and rivers, and protect the Bay. Now another distant government wants to put the dams back.

    Grrrr. This could be titled, 'Politicians waste money tearing dams up, and then putting them back.'

    --
    My AC stalker: " I personally agree with your posts most of the time, but that won't keep me from modding you troll"
    1. Re:Irony by 0123456 · · Score: 1

      This could be titled, 'Politicians waste money tearing dams up, and then putting them back.'

      But just think how many more jobs you create that way.

    2. Re:Irony by cpu6502 · · Score: 1

      Good point. I'll go round and start smashing windows. Then run for Congress on my exemplary job-creation record. ;-)

      --
      My AC stalker: " I personally agree with your posts most of the time, but that won't keep me from modding you troll"
    3. Re:Irony by turkeyfish · · Score: 1

      Sounds like it will work out as well as Arizona selling its State Capital only to buy it back. Might want to ask Jan Brewer how much she saved doing that.

  19. Sorry, I was wrong by JoeMerchant · · Score: 2

    Sorry, I was wrong about the squared term (in hydro power from height, it's linear, but it is a product of the height * flow)... the fusion simulations did quote output varying as the square of the input current....

  20. Stop DHMO by Anonymous Coward · · Score: 2, Informative

    Hydro dams use a lot of DHMO which causes ecological disaster and is extremely dangerous if it spills.
    STOP DHMO NOW!!!

    1. Re:Stop DHMO by 0123456 · · Score: 3, Informative

      Indeed. Far more people have been killed by accidental release of DHMO from hydro schemes than accidental release of radiation from nuclear plants.

    2. Re:Stop DHMO by desdinova+216 · · Score: 1

      I see what you did there...

  21. Ridiculous by Anonymous Coward · · Score: 1

    Ridiculous.

    i't dead easy to calculate whether it's worthwhile to set up a hydro plant. You measure the amount of water flow, the drop, and that directly tells you how much energy is available. You compare that to the costs of building a hydro plant there, taking into account the cost of construction, the cost of money, and the other costs, and come up with a clear-cut indication of whether the project will ever break-even.

    That has been done, for every sizable stream, like 100 years ago.

    There may be a few more sites that are practical now, given the lower interest rates and the desire to cut down on carbon pollution, but not a LOT of sites, and no large ones.

    "Underwater turbines" are a large factor under break-even in almost every case. You need a significant drop to get enough energy to be worthwhile collecting.

    1. Re:Ridiculous by turkeyfish · · Score: 1

      Don't forget to add in the cost of the fishery you just destroyed and all the fishing tackle, and boats and other fishing gear, and that will never be sold, motels rooms not occupied, camping equipment not sold, restaurant meals not purchased, etc., unless of course you are just another one of those businessmen planing to pass those costs on to someone else and pocket the difference.

  22. Local Energy and Efficiency are the Future by TheMiddleRoad · · Score: 0

    We're surrounded by energy sources. When it's 30 outside my house, it's still 60 underground. When it's 90 out, it's still 60 under. With a heat pump, I can harness that energy differential. I've got sunlight for only a few hours a day, but it can make a bit dent in my usage through water heating and electricity. I could even use an electric pump running on excess solar to store water up on my hillside during the day then let it come down during the night for hydro power. Add in an efficient fridge, more insulation, and better heat sealing, and I'll reduce my outside power usage to a small fraction of its current level. Multiply that by a hundred million households and we'll really be getting somewhere.

    1. Re:Local Energy and Efficiency are the Future by vlm · · Score: 2

      We're surrounded by well insulated energy sources.

      Corrected that for you. The delta-T at zero watts transmitted isn't as interesting as the delta-T at a couple KW. A icecube is about 40 degrees cooler than my house, which sounds great, but the rate of cooling from one icecube cannot cool my house at a couple KW rate for very long.

      Be careful because you can easily get into a situation where 500 feet of plastic pipe can only transfer, over the life of the pipes, the equivalent of 50 barrels of oil energy yet take the equivalent of 100 barrels of oil to manufacture, bury, pump, decommission, etc.

      Also you can easily get into a situation where you get a whopping kilowatt of cooling... by running a 2 HP liquid circulation pump. That same 2 HP motor running a reasonable COP around 8 could generate over 6 KW of cooling across a much higher delta T.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    2. Re:Local Energy and Efficiency are the Future by Anonymous Coward · · Score: 0

      Harnessing a 30F degree differential is a joke right? Convert that to Kelvin and you are on a 15 degree swing at a constant of about 280-290? Let's call it 300 and 285 then the Carnot cycle efficiency something like 2% -- very tough place to make a living. I'm a proponent of using geothermal heat pumps -- as constant temperature sources and sinks but not as power supplies. (Very happy with my geothermal HVAC system.) Capturing solar power as electricity is a fine idea, but electricity is high quality energy and you can capture more low quality energy (heat) per square meter cheaper -- hot water for domestic use or heating use, hot air along the lines of http://www.iedu.com/Solar/Panels/.

      Storing energy in a way that it can be harvested as high quality power is a challenge. Storing low quality power is easier as long as you need low quality power. Building a bank of photovoltaic collectors to drive resistive heating in a water heater is, for example, not optimal.

    3. Re:Local Energy and Efficiency are the Future by TheMiddleRoad · · Score: 1

      I suppose you could get into those situations. That's why these solutions are engineered. My understanding is that a geothermal system should last about 20 years. The ground loop should last 50 or more. If it's laid out right and run year round, you don't get heat buildup in the ground. 1KW would be very little cooling for such a system. That would be downright insane. The purpose of geothermal is to make heat pumps more efficient. It's hard to shed heat when the outside temp is 90 degrees, unless you're shedding it into 60 degree soil.

    4. Re:Local Energy and Efficiency are the Future by ColdWetDog · · Score: 1

      Yes you're getting somewhere. You're getting broke. Sure you have a 30 degree temp differential to work with. That'll be $30K US dollars to put in a heat pump whose payout time is 10 years. If it doesn't break. Sure you can superinsulate - for maybe $20000 a house. Got that much spare change? Thought not.

      Lots of energy floating around. Just not lots of cheap energy.

      --
      Faster! Faster! Faster would be better!
    5. Re:Local Energy and Efficiency are the Future by TheMiddleRoad · · Score: 1

      20k is an excessive number for insulation. The payoff can often come in less than 10 years if a house's power bills are high enough. A 5-6KW solar system would make sense for us. Since water heating is such a big part of our energy bill, a solar system or heat exchanger would also make a big difference on the bill, something like 100 a month.

      I wouldn't call 20k spare change, but I could do it, yes.

    6. Re:Local Energy and Efficiency are the Future by wagnerrp · · Score: 1

      When it's 30 outside my house, it's still 60 underground. When it's 90 out, it's still 60 under. With a heat pump, I can harness that energy differential.

      A heat pump uses energy to create a heat differential. A heat engine uses a heat differential to output energy. You are claiming the other way around. At a meager 5% temperature difference between your hot and cold sinks, the energy that can be extracted is so abysmally small as to not be worth trying. There is good reason why engines run combustion temperatures of many thousands of degrees. What that 60F ground temperature DOES get you is cheaper operation of a heat pump to heat or cool your home.

    7. Re:Local Energy and Efficiency are the Future by ColdWetDog · · Score: 1

      20K is what we were quoted to superinsulate our 1970's era house. And I make enough money to pay for it, it's just the ROI didn't make sense with wood heat.

      And yes, there certainly are cheaper ways to save some money for individual households - these should be more widely encouraged. As fuel prices rise, I rather suspect they will be.

      But you are still faced with the problem that you cannot economically conserve your way to a better future. You have to come up with bulk power generation facilities that are rather expensive. And unless you change the economics of the situation, say by making insulation credits quite a bit more generous, it's going to be hard to get the vast majority of the 99% to retrofit significantly. And even harder to get the 99% to actually save significant energy.

      And, in the US, as usual, we appear to be Doing It Wrong. What I see are state and federal rebates for energy efficient windows / doors. Little things that don't help much but are cheap enough for people to purchase. If you seal up your windows in a drafty house, you've done very little - however the rebates are predicated on completely imagined savings that would only happen if you put a new, superinsulated window in a new superinsulated house. It's band aid therapy and as is always the case, bandaids don't prevent patients from bleeding to death. Even if they're shiny high tech bandaids.

      Remember, this is likely to be the 'long recession' - maybe going on for decades or the foreseeable future, whichever comes first. Not all that many folks have the money to invest in something that might save them money over a decade. The US government, of course, has the money, but it's more interested in blowing things up and / or protecting the .01%.

      --
      Faster! Faster! Faster would be better!
    8. Re:Local Energy and Efficiency are the Future by TheMiddleRoad · · Score: 1

      Actually, I think we're heading out of the recession at a good pace right now.

      When we put $500 of blown-in insulation into the attic of our old, uninsulated house, it made a DRAMATIC difference to quality of life in there. We also added an efficient heater/AC at the same time, but hardly needed it because the house was so much nicer with attic insulation. It was far more than a bandage. Windows are usually overestimated regarding efficiency - you're right.

      Efficiency will make a huge difference. It's a huge part of oil doesn't cost $200 a barrel. The real changes will come when energy prices rise, which they will inevitably do. Then we'll curse how we didn't invest earlier.

    9. Re:Local Energy and Efficiency are the Future by vlm · · Score: 1

      That's why these solutions are engineered.

      Thats kind of what I'm getting at. You can't take a situation, sprinkle "engineering" on top, and it'll work, like star trek. Just like you can't add the "security" checkbox to code you're writing. Most of the time these solutions don't pencil out. Its not driven by a hatred of the earth, its just thermodynamics.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
  23. there's no free ride by Anonymous Coward · · Score: 0

    lets not forget that when we harvest the energy, we're changing the flow. If you harvest enough energy for it to matter, you'll be slowing down the flows, which may have an even bigger impact on ecology than the fossils are having now.

    Just look at the damage the big dams do.

    1. Re:there's no free ride by crazyjj · · Score: 1

      Has it occured to you that wind and solar may have unexpected side effects too? There's no free ride, after all.

      --
      What political party do you join when you don't like Bible-thumpers *or* hippies?
  24. A future but it's not the future by Kjella · · Score: 5, Informative

    Here in Norway we got more mountains and rain per square kilometer or per person the US could dream about - okay we have a cold climate too - but not even we are self-sufficient on hydro power or for that matter renewable power. Sure as fossil fuels run out they'll surely be built - just like wind, water, solar, geothermal, biofuel and everything else you can think of - but they won't add up to the current energy usage. This figure pretty much says it all.

    --
    Live today, because you never know what tomorrow brings
    1. Re:A future but it's not the future by ColdWetDog · · Score: 1

      Same problem in SE Alaska (which looks suspiciously like Norway). Lots of hydro potential but it's rather expensive to build out. Problem with steep sided gorges is that it's hard to build damns on them, they tend to happen in the middle of nowhere and transmission lines over rugged terrain ain't cheap either.

      Now, when diesel is $10 / gallon everyone will be whistling a different tune, but here and now it's hard to get the money to go out an put these projects together.

      --
      Faster! Faster! Faster would be better!
    2. Re:A future but it's not the future by nitehawk214 · · Score: 1

      Same problem in SE Alaska (which looks suspiciously like Norway).

      Obviously both were done by Slartibartfast.

      --
      I'm a good cook. I'm a fantastic eater. - Steven Brust
    3. Re:A future but it's not the future by olau · · Score: 1

      Huh? I'm from Denmark, and got the the impression that Norway was generating almost all the needed electricity from hydro. Wikipedia seems to confirm this?

  25. Scarce? Where? by SuperKendall · · Score: 3, Informative

    I suspect that, in a situation where fossil fuels are becoming scarce,

    Nice fiction Asimov.

    In real life we have hundreds of years of fossil fuels left.

    The problem with your assertion is that just like technology help us fend off anything like "peak population", technology also finds new ways to get at and find oil.

    So in the U.S. alone we have way more than enough fossil fuel to last us until really good nuclear / solar sources become viable.

    Like wind turbines, hydro power is kind of a dead end. It requires a lot of effort to maintain and only really makes much sense on the scale where you are really harming the environment around it.

    Look at the history of any large dam and you'll see a trail of destruction behind it. How funny that more dams are being proposed as green...

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  26. All dam-based power is temporary by Anonymous Coward · · Score: 0

    1. dams collect sediment, and eventually become unusable, then must be removed. Typical lifespan is 50-100 years.
    2. dams destroy fisheries
    3. dams eliminate sediment deposition upon floodplains, making floodplain farmland less soil-rich
    4. since downstream-of-the-dam water has low sediment content, it increases erosion downstream of the dam, eliminating sandbars, and scouring riverbeds.
    5. dams greatly increase evaporation and water loss
    6. dams built for "flood control" are usually built for normal springtime snowmelt flooding. they do little to control flooding from rain.

    Hydropower is fine, so long as you do mini-hydro, or towed-array generation. Dam-based power generation is highly destructive, and carries substantial long-term hidden costs, such as the cost of removing the dam at the end of its life, along with the massive amount of sediment that was impounded by the dam.

    1. Re:All dam-based power is temporary by WindBourne · · Score: 1

      So sad that you do not have a clue.
      1) 50-100 years is LONGER than a fossil fuel plant and much much longer than any of the AE plants.
      2) These dams already exists and will be converted to make use of hydroelectric.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    2. Re:All dam-based power is temporary by demonlapin · · Score: 1

      Flood control dams are also built in areas that don't experience snow with the explicit purpose of preventing rain-triggered floods. Be careful when you generalize.

  27. Everythings drier in KS? by Anonymous Coward · · Score: 0

    Kansas isn't really all that dry, depending on the part of the state... eastern ks recieves more rainfall than most of new england.

  28. Re:Scarce? Where? by vlm · · Score: 2, Insightful

    technology also finds new ways to get at and find oil.

    If that were the case, then the energy returned on energy invested would be increasing, instead of decreasing. It doesn't have to hit "1" to stop, either.

    --
    "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
  29. Natural Gas by geoffrobinson · · Score: 1

    Fracking, natural gas, and, if you have the political will, nuclear. That's the answer.

    I'm sure these projects could have a benefit and will be fine. But they don't seem to be a key solution. Everything else can be in the mix, but we aren't moving away from fossil fuels unless we want to nuke up. And as we've seen with Germany and the general green resistance to nuclear, that's not happening.

    But, sure, create a bunch of underwater turbines.

    --
    Except for ending slavery, the Nazis, communism, & securing American independence, war has never solved anything.
    1. Re:Natural Gas by turkeyfish · · Score: 1

      "Fracking, natural gas, and, if you have the political will, nuclear. That's the answer."

      If you go the natural gas route, better plan on hoarding food as global mean temperature are already set to rise at rates that will make it extremely difficult to grow food crops. In just 100 years time given pre-XL pipeline projections of addition of carbon dioxide into the atmosphere will see places like Kansas City, near the heart of the wheat belt, will see temperatures exceed 100 F more more than 100 days out of the year. Little wheat will be grown there as soil temperatures will simply be too high. Farmers in Texas, Arizona, New Mexico, Louisiana, Mississpppi, Florida, Georgia, Oklahoma, Arkansas, the Carolinas will have even less time.

    2. Re:Natural Gas by Anonymous Coward · · Score: 0

      And Siberia becomes beautifully arable... Awesome

  30. Re:Scarce? Where? by fuzzyfuzzyfungus · · Score: 2

    I apologize for the lack of clarity in my phrasing; but I was suggesting a hypothetical scarcity situation: Were fossil fuels to become scarce, you would see a marked decrease in environmental interest.

    At present, such a situation does not exist. If, however, it did, I suspect that you'd find people trampling just about anything in the hunt for new sources.

  31. Hydro is bad for migratory fish by Anonymous Coward · · Score: 0

    So it turns out that Hydroelectric power is not as green as we once thought it was. hydro power damns are a huge barrier to migratory fish such as alewives, shad and salmon. Alewives and shad are enormously important to the ocean food chain and their decline has been linked to the decline in ground fish stocks such as cod, hake, haddock, and other fish. Ted Ames, a MacArthur Genius grant recipient and Maine fisherman has documented this decline:
    http://www.penobscoteast.org/documents/C09-052.1GOMplan_001.pdf

    Add fish ladders to the hydro dams? Sadly, fish ladders are grossly inefficient and event the newest ones only get about 30% over the dam.

    There are many efforts under way to rid rivers of obstacles and barriers to the original wild life and bring the fish populations back:
    http://mainerivers.org/about/advocating-for-free-flowing-rivers/

  32. It won't begin to cover our energy use BUT.... by gestalt_n_pepper · · Score: 1

    We had damn well better do it anyway or we're going to be much worse off than we could be. Anybody who can do arithmetic and use google should have figured out by now that the 160 exajoules added to the world's energy budget each year just by petroleum can't be replaced by "renewables." EVER. The numbers just don't work and can't be made to work (See http://en.wikipedia.org/wiki/Cubic_mile_of_oil). Our best bets are nuclear and thorium and even their numbers are lousy.

    Bottom line? It's a lower energy future. We need to put as much long-term, relatively sustainable, energy producing infrastructure in place while we still can. Ubiquitous, widely distributed, small scale energy production through dams, solar, wind, geothermal, nuclear and any other way we can think of is the way to do that. In 50 years, we won't have 24/7 electricity everywhere, but we may have enough to stay above the level of Somalia if we put enough infrastructure in place today.

    --
    Please do not read this sig. Thank you.
    1. Re:It won't begin to cover our energy use BUT.... by turkeyfish · · Score: 1

      In 2008, total worldwide energy consumption was 474 exajoules (474×1018 J=132,000 TWh). This is equivalent to an average energy consumption rate of 15 terawatts (1.504×1013 W).[1] The potential for renewable energy is: solar energy 1600 EJ (444,000 TWh), wind power 600 EJ (167,000 TWh), geothermal energy 500 EJ (139,000 TWh), biomass 250 EJ (70,000 TWh), hydropower 50 EJ (14,000 TWh) and ocean energy 1 EJ (280 TWh).

      Consequently, replacement of fossil fuels by solar alone will be sufficient to quadruple levels of 2008 energy consumption. So the real question is not whether or not we can maintain a standard of living as seen in Somalia. Rather it's more of a question of what kind of waste of energy we can do without. With regard to that, you point is well taken.

      When one considers that just adding the amount of carbon into the atmosphere that will be created and turned into carbon dioxide by the ill conceived mining of Alberta tar sands and their subsequent transfer via the proposed and now partially approved XL pipeline project will likely raise the global mean temperature about 5-6 degrees on its own over the next hundred years, another perhaps more important question to be asked beyond energy costs and energy production is will most of humanity be able to afford the very limited amount of food that it will still be possible to grow as temperatures in places like Kansas City exceed 100 F for more than 100 days out of the year as are currently expected given pre-XL pipeline projections over the next 100 years? Not having enough energy will for most will be the least of our problems.

      The good news is that there will be many extremely well-fed fat cat fossil fuel company execs and their families that can be consumed at least in the initial days of the worldwide famines that are almost sure to come is soils dry way too much to support primary food production in a few hundred years time.

    2. Re:It won't begin to cover our energy use BUT.... by Hatta · · Score: 1

      Consequently, replacement of fossil fuels by solar alone will be sufficient to quadruple levels of 2008 energy consumption.

      If you have 100% efficient solar panels across the entire surface of the earth. Or to put it another way, at about 25% efficiency (good for current solar panels), you would have to cover the entire earth with solar panels if you wanted to switch entirely to solar.

      --
      Give me Classic Slashdot or give me death!
    3. Re:It won't begin to cover our energy use BUT.... by Anonymous Coward · · Score: 0

      1 EJ from ocean?

      Are you nuts? Thats is so ridiculously low.

      I'd say you could probably get more energy out of the oceans than from wind.

  33. Efficiency First by MountainLogic · · Score: 2

    Want a solution, how about a little efficiency. Doubling efficiency is a no brainier. Every major energy driver has solutions to double efficiency. Wind and solar costs are dropping like a stone and utility scale energy storage is ready for deployment (see Gates' new gravity storage investment). We just need to build in high expectation for efficiency like we have for semiconductor technology. There is a drastic difference between coal and natural gas in terms of atmospheric impact. Gas also has the ability to spin up turbines in seconds so it needs much less wasted hot standby capacity than steam technologies (nuclear/coal). The way fracking is now done is a real issue, but there are cleaner solutions to that to bridge us to a renewable future. FWIW, tar sands are also a major disaster for the environment. It take a huge amount of energy to get the oil out so there are massive impacts to the atmosphere besides the ugly water and soil damage. Until nuclear is ready to pay their own way I'm not going to believe they have a mature technology. The nuclear industry does not buy insurance to cover their potential damages because they have a get out of jail card from congress. If your neighborhood nuke takes out your region, they only have to pay a tiny fraction of the cost because the industry has a strict cap on liabilities (http://en.wikipedia.org/wiki/Price%E2%80%93Anderson_Nuclear_Industries_Indemnity_Act). That's right, if MegaNuke Corp blows a rainbow of toxic and radioactive crud all over your town you are totally out of luck. That tells me they know that their technology is not ready for prime time. Even wall street will not take the risk even given the high profits. That has to tell you something if those pirates find it too risky. And on the back end, who do you think is going to get stuck with the clean-up bill when these things are used-up? And who is going to get stuck with finding a home for this lethal crud for eternity?

    1. Re:Efficiency First by ericloewe · · Score: 2

      I suggest you use the HTML paragraph tags to format your text and improve readability. It can be a pain, but it's worth it.

      Natural gas shares the main issues of oil and coal: pollution and limited (very large but still limited) supply.

      Nuclear power can be made much safer than any fossil, hydroelectric, wind and even some solar power plants. It's a matter of cost. If you keep the bean counters away and just safeguard against anything you can think of (using reason, of course), you'll end up with something that's safer.

      I'm sure someone can quote deaths related to coal/gas/oil extraction or even related to hydroelectric power, compared to nuclear power.

  34. Re:Scarce? Where? by ColdWetDog · · Score: 4, Informative

    In real life we have hundreds of years of fossil fuels left.

    Sort of true. There certainly will be oil in the ground 200 years from now. It won't be easy to get, nor will it be inexpensive. The global taste for fossil fuels, especially liquid fossil fuels is truly enormous and growing (think China and India who are attempting to get to US per capita energy expenditures). The supply of fossil fuels isn't growing much at all (happy words from various US politicians notwithstanding).

    What we have hear is a failure to communicate. Nice writeup on the concept of Peak oil and how we need to change a few things.....

    --
    Faster! Faster! Faster would be better!
  35. Re:Scarce? Where? by ColdWetDog · · Score: 1

    You are seeing fossil fuels become scarce. You are seeing a marked decrease in environmental interest. Look at China and India. Yes, they're both attempting to reign in coal based pollution. No, they are not doing a very good job of it.

    --
    Faster! Faster! Faster would be better!
  36. Re:Scarce? Where? by fuzzyfuzzyfungus · · Score: 3, Interesting

    The good ones are running out; but there still seems to be enough coal, vaguely-bituminous-shale, frackable gas, and assorted other burnables sloshing around, if you are willing to ignore the smell... Which we are.

  37. Hydro is not that bad for migratory fish by Anonymous Coward · · Score: 0

    You are several decades behind. Fish ladders got much better when they let actual scientiest look at them. You lose a bit of energy when fish are migrating, but newer models to better predict fish movement (and looking at the whole river and not a single plant) make a lot of difference.

    In Germany there are rivers where fish have to pass dozens of hydro plants, and there is almost no loss of fish.

    1. Re:Hydro is not that bad for migratory fish by turkeyfish · · Score: 1

      Migrations are hardly the problem. Most migratory fish species have seen their populations so thoroughly decimated that most are less than 90% of their original population sizes. The fact that "no loss of fish" has occurred may only reflect that most of the damage has already been done and this will make it permanent. With viruses and global warming taking out salmon stocks at a rapid rate, most people will simply adjust to the unavailability and high prices for those few species, which can still support fisheries. The bigger problem is the destruction of reproductive and feeding habitat that it caused by dramatic changes in flow volumes and speed, which directly or indirectly affect the amount of sediment load.

  38. Small Hydro for Small Living by swb · · Score: 1

    James Howard Kunstler is a huge advocate of much more decentralized living -- essentially small town living with an emphasis on local agriculture, etc.

    If you have people living in a town of 1000 people near a river, small hydro seems to make sense -- that size of a town could probably get by with 10MW, which assumes 10kW per person average consumption, which I'd guess is probably a little high.

  39. DO THE MATH! by Anonymous Coward · · Score: 5, Informative

    The answer is a solid NO .

    1. Re:DO THE MATH! by CAIMLAS · · Score: 1

      If I can supply power to my house with the stream behind my house and a water wheel, why do I give a dam about what some study says?

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  40. Re:Scarce? Where? by Firethorn · · Score: 4, Insightful

    In real life we have hundreds of years of fossil fuels left.

    In real life we have millions of years; because somewhere between 50 and 200 it'll become increasingly uneconomical to extract said fossil fuels such that alternatives are actually cheaper. The first it's likely to happen to is oil. In 50 years we're likely to let most of it sit in the ground because pulling it out is too expensive except for certain scientific testing.

    Thus the 'peak oil' - at some point extraction cost will exceed the economic worth, and production will start dropping.

    Nuclear is already viable in all but political arenas. Jump the price of power enough and people will hold their nose and select it. Of course, you can't exactly shove nuclear power into a car, and oil is mostly used for transportation. So you're looking at a BIG change if you're going to use nuclear power to provide transport. Something like vast electrification of rail lines, restoration of electric trolly car systems, etc... More dense housing where mass transit is viable.

    Coal is more a competitor for Nuclear, and we have a lot more of it.

    --
    I don't read AC A human right
  41. Breeders by Anonymous Coward · · Score: 0

    I've yet to see a conclusive argument against breeder reactors.

    The reason against breeders is the wast amount of waste they produce. It shared the same problem with reprocessing used nuclear fuel: You multiplily waste for a very little gain.

    The Frensh built a breeder, it was a desaster (mostly financially). Currently they are using it to destroy the plutonium generated by other normal plants instead of breeding new one.

  42. Small Scale Hydro makes sense by Strider- · · Score: 5, Informative

    Small scale hydro can make a heck of a lot of sense. I work with a small community high in the mountains of Washington State, where the primary power supply is a small scale hydro-electric generation system. The funny part is that this technology isn't "new"... The turbines and generators they're using have patent plates on them that read 10-04-86, and that's not 1986. Despite being easily 100 years old, the technology is still easy to maintain, and efficient. Based on the electrical output compared to the water flow, we figure this plant is about 80% efficient, which is pretty good.

    In the summer, the system will generate upwards of 250kW of power, which is more than adequate for the community. In the winter, this does drop down to 30kW or so, but that is still more or less sufficient for the lower winter population.

    The water supply for this system comes off a small creek flowing down the mountain, about 300' up there is a small diversion dam that the creek flows into. Water will either flow into the penstock, or continue down the creek depending on demand. As a side note, the water pressure is sufficient to push some of the water through the entire water treatment plant, and then into a storage tank, to supply the community's drinking water without the use of a single pump.

    --
    ...si hoc legere nimium eruditionis habes...
    1. Re:Small Scale Hydro makes sense by Ion+Berkley · · Score: 1

      In recent history small scale hydro schemes have actually been seen to be more environmentally damaging than traditional large ones, largely because the can escape some of the environmental oversights in various jurestrictions. British Columbia is one of the worst offenders, where 49MW is a key project power output threshold below which it;s much easier to build a scheme. A very informative little film by my friend Bryan, now a Nat Geo camera man: https://www.youtube.com/watch?v=WPtddgUqr4o

      Here's another great link to an NPS site dedicated to the ground breaking remval of 2 obsolete dams on the Elwha River in WA.
      http://www.nps.gov/olym/naturescience/elwha-ecosystem-restoration.htm

      Hydro has it's place, but its not panacea.

  43. Fun with numbers by Anonymous Coward · · Score: 0

    So 5,400 sites to produce 18 GW of power over all of them. To feed a 3,000 GW domestic appetite for electricity. Assuming the 50% increase, that means hydro currently provides 36 GW. This would make it 54 GW total from hydro. What is the cost per MW installed for these 5,400 solutions?? Compared to other sources?

    That also sounds like 5,400 cases of NIMBY.

  44. Actually, more reservoirs will be added by WindBourne · · Score: 1

    Here in western USA, we have a number of reservoirs that do not have hydroelectric on them. These will most likely be modifed in the future to have that. Some of these will generate 100's of MW or more. In addition, it is a certainty that Colorado WILL build one large reservoir in the west. The reason is that if we do not, we will see Californa, Nevada, and Az contine to steal our water. It is a case of use it or lose it. That large reservoir (most likely 2-forks) will produce something close to a gigawatt or more.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  45. Hoover, really? by Life2Death · · Score: 0

    I totally agree, they'd never build anything that small these days!

    We just finished building one far greater in china, and I suspect this is the new age of Super Dams

  46. Where to start.... by tacokill · · Score: 1

    a) We don't use oil for producing power. We use oil, almost exclusively for transportation.
    b) Coal is a fossil fuel. So is natty gas.
    c) How the hell did this get modded +5 insightful?

    1. Re:Where to start.... by ericloewe · · Score: 1

      a) Oil is not widely used for electricity generation, but it is used.
      Besides, does it really make that much of a difference where we use oil? The only applications I can remember right now that really rely on oil or some sort of analogue is aviation and shipping, with limited mid-term possibilities for new propulsion systems.
      Just eliminating road traffic and backup generators (replacing combustion engines with fuel cells or batteries, depending on application) would be a very large reduction in oil consumption. Besides the environmental benefits, there would also be socio-political benefits.

      b) I do know coal is fossil. I meant it as: "Especially not coal" I wasn't very clear, I'll give you that.

      c) Moderating is not about agreeing or disagreeing, it's about recognizing valid points and useful discussions.

    2. Re:Where to start.... by nojayuk · · Score: 1
      "a) Oil is not widely used for electricity generation, but it is used."

      Japan is reportedly burning about 200,000 barrels of oil a day at the moment to generate electricity to cover the loss of their nuclear reactor fleet due to shutdowns and inspections. Some of that is bunker oil but other reports say that they're also burning unrefined crude oil in old demothballed coal-fired power stations.

    3. Re:Where to start.... by ericloewe · · Score: 1

      Yeah, but they're pretty desperate without their nuclear plants. I'd say it's hardly the norm.

  47. Pumped Storage by Tokolosh · · Score: 1

    The answer is yes, and the reason is http://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity to compensate for variable power sources, such as wind and solar.

    Personally, I think the environmental problems of dams are overstated, and those of bio, solar, wind are understated.

    See http://conesteepark.com/history/a-lake-in-transition for what has happened to a 120-year-old dam in my neighborhood

    “The Stone Age did not end for lack of stone, and the Oil Age will end long before the world runs out of oil.” - Sheikh Yamani

    --
    Prove anything by multiplying Huge Number times Tiny Number
    1. Re:Pumped Storage by turkeyfish · · Score: 1

      "Personally, I think the environmental problems of dams are overstated,"

      Obviously, you don't know much about fish biology. Dams have the capacity to take out entire species and have done so on multiple occasions. Some of the larger dams, such as the Three Rivers Georges dam in China and the anticipated completion of the damning of the Mekong River have already wiped out hundreds of species, and even cut productivity of many marine species by half or more. This happens because primary productivity and fish reproduction is strongly affected by even small changes in flow and current speeds as it dramatically changes the amount of suspended materials which can either serve to provide nutrients or smother habitat in excessive silt loads. When one considers that 50% of all protein consumed by humans is in the from fishes, this is a very big impact indeed. If damns take out only about 5% of all protein, millions of people can be expected to starve to death, without an alternative source of protein. Consequently, you may have a lot of angry people soon knocking on your door for restitution, not to mention thousands of very unhappy fishermen and businessmen who depend on healthy recreational and commercial fisheries as well.

    2. Re:Pumped Storage by gestalt_n_pepper · · Score: 1

      Which is why you have diversion dams that leave a clear corridor for fish to move.

      While we're on the topic of narrow minded, cliche' engineering concepts, there's no reason for dams at all. Another way to get power out of a river is with a distributed array of low head turbines throughout the length of the river. The system is robust (no one failing turbine takes out the whole system), can be built out incrementally over time, and does not require the overhead of a dam. Admittedly, other maintenance is required, and you lose the advantage of flow control of the river.

      --
      Please do not read this sig. Thank you.
    3. Re:Pumped Storage by Tokolosh · · Score: 2

      The species loss you describe may be true, but you have not made a case that this is worse than the benefits from the dam.

      Also, if some fish species are lost does not mean that the total fish biomass decreases. On the contrary, the dam creates a larger habitat for the remaining fish, and thus more food. I have seen this myself at http://en.wikipedia.org/wiki/Lake_Kariba

      50% of protein may come from fish, but how much of this is from the oceans, how much from rivers, how much from dams and lakes?
       

      --
      Prove anything by multiplying Huge Number times Tiny Number
  48. My small Alaskan town by Anonymous Coward · · Score: 0

    I am from a tiny rural community in Alaska, one in that is isolated enough to make fuel quite expensive - I haven't visited in a while, but the last time fuel down in the "lower 48" was as expensive as it is now, gasoline was over $5.50 a gallon, not to mention diesel at almost $6.50. This was enough to make electrical bills quite painful, to the tune of about 75 cents/KWH (No, I'm not joking or exaggerating). A few years ago, a very small hydroelectric dam was installed at a local river in an effort to lower power costs and provide a source of energy cleaner than the old diesel generators that were then in use. Electricity still isn't the cheapest, but as soon as the dam's generators switched on, it dropped over 20 cents off of the hourly rate, and will most likely continue to drop as the project pays for itself. The town's small grid is now run entirely off of this one dam, with the diesel generators serving only as a backup. Now, I'm no expert, but this seems like progress to me. For a rural community accessible only by boat and plane, having a reliable power source that can run year-round without the need for shipping in expensive fuels, these kinds of projects are nearly priceless, and for any community, an interim alternative to hydrocarbon power is a positive thing. Now if only we can convince people that the word "nuclear" does not have to mean death and destruction...

  49. Really small hydro has a past and a present by Anonymous Coward · · Score: 0

    In Big Sur one of the state parks has a Pelton Wheel on display. It was used to generate electricity early in the 20th century. That type of setup is good if you have a low flow but a high drop, which is exactly what you have there. In fact the terrain is so rough and beautiful that it has few remaining residents and is mostly parkland. The Pelton Wheel and its small housing did not detract much from the beauty although I suspect the noise of it actually operating might not be so pleasant.

    I have also seen some property for sale with legal microturbines generating power for a single residence. If this can be done in California with such very restrictive laws it can be done everywhere. However, the guy might have been grandfathered in or gone through an awful lot of red tape and fees. That's the present.

    The future? Yeah sure. It's just not going to be a huge percentage though. A few rural people can avoid the expense of the grid. A few municipalities will supplement their power. Small hydro, or any alternative source for that matter, cannot be the sole prime mover of a high energy society.

    1. Re:Really small hydro has a past and a present by desdinova+216 · · Score: 1

      the only drawback with something like that in theory is that the existing power utility company would not be able to make as much money

  50. Small scale? No way. by Anonymous Coward · · Score: 0

    That could never work, because it would imply a multitude of energy-producing options, each region choosing what best suits it, rather than one simple, efficient system that fits everyone nationwide. Can't have that!

  51. Re:Scarce? Where? by Sperbels · · Score: 0

    I apologize for the lack of clarity in my phrasing

    There was no lack of clarity. It came through loud and clear. Kendall just ignored it and attacked. Happens all the time when dealing with zealots. Playing devils advocate, even if it's clear that you are, will make you a target of people who are governed more by emotion than reason.

  52. Too Many Fucking People Fucking! by Anonymous Coward · · Score: 0

    FFS, we don't need more energy generation or storage. All such discussion is merely mental masturbation postponing the inevitable Malthusian Nightmare.

    The only (ONLY) practical long-term solution is FEWER FUCKING PEOPLE (and fewer people fucking). This WILL happen one way or the other. Nothing can stop it.

    If we grab it by the balls NOW and stop the ignorant (unaware that they are fucking the human species to death) from fucking-out 5+ children each and restrict everyone to ONE CHILD PER COUPLE, we can save the world and the human race.

    If we don't do that, we fuck far faster than we THINK. Technology won't be able keep up with our demand for food and energy, leading to global resource wars, famine, and giant fucking calamity the SHTF'ers dream of.

  53. Re:Pumped Storage Sucks - DO THE MATH ! by Anonymous Coward · · Score: 0

    You obviously haven't done the math. Pumped storage sucks.

    http://physics.ucsd.edu/do-the-math/2011/11/pump-up-the-storage/

  54. Atlantropa by Soralin · · Score: 1

    Bah, you call Hoover Dam a giant hydroelectric project? Now this: http://en.wikipedia.org/wiki/Atlantropa is a giant hydroelectric project, building a dam across the Strait of Gibraltar, and lowering the Mediterranean sea by 200m in the process. :)

  55. Re:Scarce? Where? by rgbatduke · · Score: 4, Insightful

    In general I agree with your point, but in fact hydroelectric ties with nuclear for currently having the lowest cost per delivered watt of power of all the extant methods of power generation. Wind is, as you point out, a dead end except for (possibly) solar updraft that is really a variant of solar, not a hillside of windmills. Solar PV has a Moore's Law that appears applicable, which predicts that by the end of this decade it will likely be break even compared to e.g. coal in amortized cost per delivered watt, without subsidy, and thereafter will become ever more economically profitable on a comparative basis.

    Tragically, nobody wants to look at nuclear, especially new generation nuclear that is far safer or thorium that is both safer and not subject to nuclear arms proliferation concerns. Fusion is still on a distant horizon, but if/when it is realized everything else goes away.

    With the possible exception of gasoline. Like it or not, it is difficult to imagine any other way of storing 35 kW-hours in the volume occupied by one gallon of gasoline, in a reasonably stable and safe way. Even if fusion is perfected, solar becomes secondary universal and coal goes away, we'll probably end up synthesizing gasoline (or an equally energy dense equivalent) simply because of that.

    BTW, not all dams are evil, nor are their reservoirs. I'd guess most of them are more beneficial than not. But either way, that can be decided on a case by case basis -- it isn't reasonable to say "building dams is always bad" as people have built dams without worrying about generating power just to regulate flooding or facilitate irrigation or cheap transportation. Beavers build dams in the wild -- sometimes they are "good", sometimes humans go and tear them down as "bad" -- depending on where they are and what results from the dams.

    rgb

    --
    Even when the experts all agree, they may well be mistaken. --- Bertrand Russell.
  56. Say Goodbye to FW Fishes by turkeyfish · · Score: 1

    Studies have shown that dams on rivers and streams severely impacts reproduction in fishes, particularly since it alters stream volume and sediment load that directly impact on suitable nest and spawning sites as well as more indirectly on feeding sites, not to mention creates barriers that make it impossible for fishes to move to these sites from up or downstream. With this many projects under consideration you can pretty well kiss most of the North American fish fauna goodbye if these are approved. Of course, this probably won't bother those who won't mind leaving the earth a sterile and uninhabitable wasteland if they think they can make a buck or get a kickback to the their campaign.

    1. Re:Say Goodbye to FW Fishes by Anonymous Coward · · Score: 0

      Sure, just tell that to the organizers of this annual tournament http://www.mooredamfishingtournament.com/winners.html
      The reservoir is only about 50 years old and it's full of life.

  57. Re:Scarce? Where? by TheLink · · Score: 1

    I see some increase in environmental interest in China.

    See: http://www.china.org.cn/environment/2011-11/07/content_23843392.htm

    Wan Bentai, the chief engineer for China's Ministry of Environmental Protection, said heavy metal from smelter chimneys, water run-offs and tailings has polluted in total about 10 percent of the countryâ(TM)s farmland, and the pollution levels have exceeded government limits, according to Southern Metropolitan Daily.

    To me when they are even allowed to say and publish stuff like this it means the situation is so crap that the top are considering it a serious enough matter. And such announcements are made to help prepare the way for possibly draconian/drastic actions in the future.

    They're also building more nuclear power stations.

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  58. Sure. by DaveV1.0 · · Score: 1

    As long as you don't mind massive habitat destruction. All the environmentalists will be fine with that, right?

    --
    There is no "-1 offended" or "-1 you don't agree with me" mod options for a reason.
    1. Re:Sure. by Anonymous Coward · · Score: 0

      As an environmentalist, I don't have a problem with dams. Land naturally re-shapes over time, and it causes lots of animal migration and ecological change. Water does that all on its own, and life is perfectly designed to adapt to such changes. The humble beaver wouldn't exist if nature couldn't handle the reality of constant chaotic geo-morphing.

      What dams do NOT do are poison the water, soil and air with toxins. And they don't melt down.

      Simple, elegant and hard to kill people with.

      Hydro electric power was the right answer from the start. It's only disadvantage is that it's not portable, but thanks to the simple electric cable, that doesn't really matter.

  59. Re:something about reservoirs by OldHawk777 · · Score: 1

    after the last century and the start of this century, when do we now worry about environmental effects?

    --
    Unaccountable leaders are masters, and unrepresented people are slaves. How do US and EU fare?
  60. Re:something about reservoirs by green1 · · Score: 2

    sure reservoirs increase the efficiency of hydro electric generation, but I don't see why we can't do hydro without them. run-of-river projects should be no problem, and have a tiny environmental footprint. back to the old days of waterwheels, no reservoirs flooding land, no dams impeding fish...

  61. Military Nuclear is an example by RobertLTux · · Score: 2

    Can anybody point to any actual accidents in the US Navy nuclear program that did not involve somebody shooting at a sub??
    (note http://www.arlingtoncemetery.net/rlmckinl.htm does not count due to it being a suicide)

    this is how you do "safe" nuclear.

    --
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  62. Dams are *NOT* the only way to solve this. by gestalt_n_pepper · · Score: 1

    Speaking of narrow minded, cliche' engineering concepts, there's no reason for dams at all. Another way to get power out of a river is with a distributed array of low head turbines throughout the length of a river. The system is robust (no one failing turbine takes out the whole system), can be built out incrementally over time, and does not require the overhead of a dam. Admittedly, other maintenance is required, and you lose the advantage of flow control of the river, but these are not mutually exclusive solutions. At some locations, a dam makes sense. At others, turbines are a better solution.

    Quantitatively, this will never be a substitute for coal, gas and oil. Nothing is, but in the long run, it's probably things like this or nothing at all.

    --
    Please do not read this sig. Thank you.
    1. Re:Dams are *NOT* the only way to solve this. by WindBourne · · Score: 1

      While I like your thinking, you are wrong about the dams. These are dams that already exist. For example, I grew up on Wonder Lake, IL. The dam on it is about 25-30' tall. It is perfect for adding a couple of 100's up to a MW of power. And more importantly, it is CHEAP to do.

      --
      I prefer the "u" in honour as it seems to be missing these days.
  63. peak oil doesn't matter. by databaseadmin · · Score: 1

    As an 80%+ correct statement.

    Oil makes transportation.

    Coal with some Hyrdo and Nuclear makes Electricity.

    Natural Gas makes home heating.

    Until most cars a electric cars (>15yrs), Hydro can only replace Coal and Nuclear.

  64. Re:Scarce? Where? by mayko · · Score: 1

    Nuclear is already viable in all but political arenas. Jump the price of power enough and people will hold their nose and select it. Of course, you can't exactly shove nuclear power into a car, and oil is mostly used for transportation. So you're looking at a BIG change if you're going to use nuclear power to provide transport. Something like vast electrification of rail lines, restoration of electric trolly car systems, etc... More dense housing where mass transit is viable.

    You're right, and this is also why the pure electric car isn't viable yet. Our current infrastructure is designed around the idea that I put energy into my car and drive it until it is almost gone... then put more in and keep driving with no down-time. Whatever solution we come up with has to fit this or it is a step backwards. For this reason I'm a big fan of hydrogen fuel. Electric drivetrains have already proven to be successful in a number of vehicles. So lets start building hybrid vehicles... and I don't mean the battery-laden type like the Prius. Think more along the lines of locomotive style hybrids. Small efficient engines powering an electric motor. By making the drive-line standard we will have a platform which we can swap in the most cost efficient energy source available at a given time.

    Then if Nuclear is widely adopted we use excess electricity to generate hydrogen fuel.

  65. SnoPUD by Nethead · · Score: 1

    My Public Utility District is building several small hydro projects and updating others. They also have applied to the FERC for a license to build tidal power.

    --
    -- I have a private email server in my basement.
  66. Re:something about reservoirs by Maury+Markowitz · · Score: 4, Interesting

    > ...and their environmental effect.

    I think you missed this part:

    "produce power from underwater turbines"

    These are called "run of river" systems. Instead of a dam that creates an artificial height difference, they are based on using natural changes in height of the landscape. What you do is dig a tube between two points on the river, and the difference in height between the two provides the power.

    Although everyone things of dams, run-of-river systems are very common. Niagara Falls is a good example. This project has little visual impact, and none of the detrimental effects normally associated with hydro. The failure modes are also quite benign, generally loss-of-power, not loss-of-life.

    I've never seen a good argument not to build these where possible. Except for financial, of course.

  67. Improve existing hydro by ChrisMaple · · Score: 1

    Many, perhaps most, medium sized hydroelectric installations fail to use a lot of the energy available to them. The plants are sized to be able to run all year, and when storage is exceeded the excess water runs through a spillway or over the top. Resizing such plants might not be cost-effective, but less power would be wasted, and it would be easier for power companies to maintain than a horde of small plants.

    In my opinion, small plants are best for an ambitious streamside property owner as supplemental power and a hobby. And nothing beats the rustic charm of a water wheel.

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  68. Damn it by tepples · · Score: 1

    For example see hydrovolts.com/ for a unique hydro generator that does not need a damn.

    Good, because I sometimes have trouble giving one.

  69. As a whitewater kayaker... by SCHecklerX · · Score: 1

    Please stop damming our fscking rivers. Dams are arguably the most eco-unfriendly source of power in existence. I swear the Army corps of engineers also won't be happy until every river in this country has been turned into a lake.

  70. Location of one by slack_justyb · · Score: 1

    Here is the location for one that I've seen USGS and TVA surveying for sometime now. When I asked the guy what they were doing, they said they were looking into how easy it would be to slip a hydro-electric generator here.

    As you can see, it already is dammed so I'm not sure what ecological effects adding a generator would add, but I doubt that it would be any worst that the current situation of algae bloom happening every five to six weeks at the location.

    1. Re:Location of one by bussdriver · · Score: 1

      The link I have is dead but a german guy had built a clever dam that didn't do much harm. it was a large drain and the water would swirl around down the drain; it was easy to allow a stream to pass while putting most the water into a large bowl to flush down the drain. the turbine was vertical and worked of the spin of the water down the drain but a more intrusive prop could be used. Sure it is not as powerful and its lower scale... I'm not sure it would scale that large. but it is an Aerator as well and can be done without causing harm...

      actually, dams could be done with less harm if they provided a minimal stream to route around the lake.

  71. Re:Scarce? Where? by sycodon · · Score: 1

    I'm wondering what destruction you see behind the Glenn Canyon (Hoover) dam?

    Or maybe you are talking about the lack of destruction from the Colorado river not flooding downstream communities.

    --
    When Fascism comes to America, it will call itself Anti-Fascism, and tell you to give up your guns.
  72. Re:Scarce? Where? by markhb · · Score: 1

    Glen Canyon and Hoover are separate dams; Glen Canyon Dam is upstream of the Grand Canyon and Hoover (which spans Black Canyon acc. to WP) is downstream of it. So far as the destruction goes (and I am not one to harp on such things, but this answer seems obvious), I suppose everything that is now at the bottom of Lakes Powell and Mead (respectively) could count. Cf. the former Maine plantations of Dead River and Flagstaff.

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  73. Re:Scarce? Where? by Anonymous Coward · · Score: 0

    bah, fischer tropsch can and has made gasoline from coal, peat, your dead grandma, poplar trees, crop residue and your poop for $80 bbl oil equivalent or about $3.00/gal. The only problem is that you have large capital expenditures -like military grade expenditures! No one is willing to spend a dime in this country because we're in decline. Same reason we don't put solar in the ground although it is cheaper than a hundreds of GW of existing capacity in the US. Why invest in a declining empire?

  74. Re:Scarce? Where? by K.+S.+Kyosuke · · Score: 1

    Yes, they're both attempting to reign in coal based pollution. No, they are not doing a very good job of it.

    Actually, China does reign in coal based pollution. But that might be something different from what you were probably attempting to say.

    --
    Ezekiel 23:20
  75. Re:Scarce? Where? by Anonymous Coward · · Score: 3, Informative

    In general I agree with your point, but in fact hydroelectric ties with nuclear for currently having the lowest cost per delivered watt of power of all the extant methods of power generation. Wind is, as you point out, a dead end except for (possibly) solar updraft that is really a variant of solar, not a hillside of windmills. Solar PV has a Moore's Law that appears applicable, which predicts that by the end of this decade it will likely be break even compared to e.g. coal in amortized cost per delivered watt, without subsidy, and thereafter will become ever more economically profitable on a comparative basis.

    On the surface, it looks like he knows what he's talking about. However, ask a subject matter expert [myself] and it's clear he's spouting nonsense. Maybe some collection of facts that were true at some time... But let's examine them now.

    1. Wind is a dead end?

    Except for having the largest project pipeline of any energy conversion technology. FYI, it will remain the largest pipeline until solar eclipses it. These industries will grow to 10 - 100x at current economics without hitting storage walls and without improving economics. I can not consider how a 10 - 100 fold increase in production and 6 - 13% of global production (at the storage wall) can be considered a dead end

    2. The application of Moore's law to PV

    No. The barriers to PV production have been varied, most reasons are are not related to semiconductor production. Historically it was the cost of production of high purity polysilicon because they competed with semiconductor industry (nothing to do with transistor count). We can make cheap solar grade 6-9N poly now. Slow technological advances have decreased wafer costs and increased wafer efficiency. Cell/Module production costs have scaled well with production capacity (standard manufacturing learning curve). Equipment costs are cheap enough to compete with coal / nuclear. We might see another 50% drop in silicon module asp (due to ~19-21% quasi-mono cells displacing mono) PV in the next few years, but for all intents and purposes they are cheap enough. BOS will go down by a factor of 2 - 3 with cheaper inverters from China or microinverters. All that's left are to tackle ridiculously disproportionate installation costs, which are a relic of the tortuous development of the industry. Large firms will swallow up the crappy downstream industry we now have, prices will/are drop/dropping and install costs will find a home at less than 1 $/Wp. Again, nothing to do with Moore's law or anything like it... Utility scale projects are already approaching $3/Wp installed ! because they can efficiently minimize these ridiculous human costs. There will be utility installs at 1.50 $/Wp in 2012. These utilities will run these plants for 30-40 years and produce electricity at 0.03-0.04 $/kWh. Nothing will come close except high capacity factor natural gas.

    3.break even with coal by 2020

    There is no magic coal/solar price point. Historically $1/Wp module ASP has been a target that approximates coal grid parity. We achieved this in Q2 2011. Otherwise solar beats coal in some places and solar will never beat coal in other places. Presently, module ASPs are less than 0.9 $/Wp and will probably be less than 0.8$/Wp by the end of 2012. Furthermore, coal is no longer the target. Coals prices have been steadily increasing for 15 years, while quality steadily decreasing for decades. Natural gas is the cost leader at present day prices, mainly due to fracking. Solar may never catch up to gas, but a solar / gas grid is already more flexible and cheaper than nuclear or coal.

    4. nuclear and coal are the cheapest

    Yeah yeah, let's stop comparing the cost of generating fully-depreciated 40 year old equipment with new solar plants. Solar is cheaper than both today. There are plenty of issues with solar (e.g. less than 0.25 capacity factor), but raw economics is no longer one of them. W'ere pr

  76. Re:Scarce? Where? by 32771 · · Score: 1

    There are EROI figures around that place the 1:1 Oil EROI point at around 2030 to 2050. An EROI of 3:1 is needed for society to function supposedly, hard to separate Oil from other sources of energy though.

    Here is a paper regarding the projected Oil EROI.
    www.mdpi.com/2071-1050/3/10/1796/pdf

    --
    Je me souviens.
  77. Environmental Impact? by Bensam123 · · Score: 1

    Everyone pretty much understands that ecological environments are destroyed when dams are built... but why don't many people think further then that? Life exists in all parts in the world, a giant lake above a dam isn't going to be automatically devoid of all life. An environment will be destroyed, but a new one will pop up. There are ways that both the environment and people cope with change like this. The environment will readjust on it's own and people can do things like install fish ladders.

    I don't understand why people throw up a red flag and seem to think that as soon as a dam is put in it eradicates all life within a 10 mile radius and prevents any sort of life from coming back. There is a regenerative factor here that should be considered as well. You can't step on any part of the world without being ecologically damaging, heck just being alive is ecologically damaging.

  78. Re:Scarce? Where? by CAIMLAS · · Score: 1

    Like wind turbines, hydro power is kind of a dead end. It requires a lot of effort to maintain and only really makes much sense on the scale where you are really harming the environment around it.

    Not true.

    This may be true for the larger hydro installations around the world, but it it is by no means true of them all. I know it's true for the Three Gorges dam in China (partially due to how they operate it, but that's China for you), and may be true for other dams, such as Hoover which has a very high flowrate at its spillway, through the tail water.

    Yes, constructing and initiating a hydroelectric dam will be 'destructive' to the environment around it. It doesn't harm the environment, though: it changes it. It's arguably much less destructive than a naturally occurring spillway. You may know them as waterfalls.

    Additionally, dam construction can help environmental diversity. It doesn't necessarily hurt it. A river prone to seasonal flooding and land destruction (as occurred annually prior to the construction of the US dam system along the Missouri and Mississipi) can have the spring surges regulated to reduce the number and frequency of actual flooding along its length. Those dams can be converted to produce hydroelectric power where they are not already doing so - and there are quite a few of them which are still just dams.

    Ecological benefits (change, not destruction) from dams is pretty significant. It creates more marshland acreage (always a diverse habitat of wildlife), provides more variety in waterways, reduces river-length erosion, and so on. The hydroelectric potential of a dam is almost all a bonus. Dams are a good idea if you want to live anywhere near a major river or have periodic seasonal flooding of any sort.

    Consider, for a second: the New York Reservoir System has something close to a trillion gallons of water. These are all resevoirs - man made lakes on natural water sources (natural springs, rivers) which have been in use for over 100 years at this point. They don't (as far as I know) harness hydroelectric, they've just got a dozen or so spillways per lake (depending on size). That is a lot of wasted power which, while not significant on the grander scale, would help none the less.

    There are many areas which would benefit substantially from hydroelectric power, simply because it would provide them with the excuse of derming their rivers and making a reservoir with a dam they could seasonally regulate - which happens to produce hydroelectric.

    Hydro-electric is, per kWh, very cheap. The majority of the state of South Dakota is powered by a the 4 hydro dams on the Missouri river, the Oahe being the largest. We pay half (or less) the power rate of places like California. As of 2011 it was still something like .06$ per kWh (it's gone up a bit due to being sold out of state, I believe). While the initial construction of a dam is surely very expensive, it's a very wise long-term investment.

    --
    ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  79. Re:Scarce? Where? by Firethorn · · Score: 2

    Whatever solution we come up with has to fit this or it is a step backwards.

    I somewhat disagree. Right now it's 'drive it until it's more than half empty, then drive to a fill up station and pay to spend several minutes pouring flammable liquid into it'. There ARE negatives to the way gasoline filling works. Thus, moving away from this model can be a advantage, if done right. One such possibility is inductive charging for EVs.
    Stage 1: Recharge at home via cable. Let's say that it takes 10 minutes, on average, to navigate a gas station and fill up, once every two weeks. 260 minutes spent at the gas station. As long as it takes you less than 42 seconds to hook up the charging cable 365 times over the year, you're saving time.
    Stage 1.5: Add capability to recharge at work/restaurant/mall/parking lot via cable. Takes a bit more time, but you're more likely to be topped off for any long trips. If batteries are still a significant issue, allows you to make the battery smaller, as you're charging more often.
    Stage 2: Recharge at home via induction: You simply park in the designated spot. Newer induction systems are more capable than ever at non-perfect alignments and longer distances. Time savings: Significant.
    Stage 2.5: Recharge at work/restaurant/mall/parking lot via induction - I view induction systems as less likely to be damaged and more universal(you can always play with how the loops are connected to vary voltage). It's also faster.
    Stage 3: Induction systems placed in roadways provide charge while driving. It might not be able to 'keep up' at highways speeds, but if it takes care of 50% - that takes a 300 mile charge to 600, effective. Worst case you slow down.

    For this reason I'm a big fan of hydrogen fuel.

    I'm not a fan of hydrogen because while it's the highest energy fuel by mass, it's about the lowest by volume. It also tends to leak. By the time you're storing a significant amount in a space small enough for a car, you're looking at pressures high enough that it ends up heavier than LiIon batteries for the energy contained. Making hydrogen is also inefficient - though processes have improved significantly, it's still much more energy efficient to charge batteries up. It's bad enough that NG is a better solution, and we even have fuel cells that work with it.

    A big reason that the prius is as efficient as it is is still because of the battery - the ability to store the stopping energy and use it for the subsequent start saves a lot of energy. Still, one could do the same thing with a much smaller amount of super-capacitors. Besides, LiIon killed a lot of the advantages fuel cells had over batteries.

    Personally, if you ask me my vision of a future where fossil fuels either don't exist or are not used, I see a variety of fuels being used. Electric for in-city short range use, and big things like trains have a continual tap. For vehicles that have to leave the area of the grid or just drive that much - it varies from hybrids fueled by algae based fuels to NG.

    --
    I don't read AC A human right
  80. Re:Scarce? Where? by CAIMLAS · · Score: 1

    You are seeing a marked decrease in environmental interest. Look at China and India.

    You're not exactly helping your cause there, buddy. Do we also have rare earth, iron, salt, etc. shortages? No, not really. This is, well, China and India we're talking about, here. China and India are using those, too. What we have is a shortage of cheap oil, which is a significantly different situation largely because China and India are ramping up their industrialization.

    And, again, it's China and India, home of the largest slave/slum/underclass populations in the world for the past several millennia, where disposal of human waste in the streets is still common and accepted.

    --
    ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  81. Re:Scarce? Where? by CAIMLAS · · Score: 1

    In real life we have millions of years; because somewhere between 50 and 200 it'll become increasingly uneconomical to extract said fossil fuels such that alternatives are actually cheaper. The first it's likely to happen to is oil. In 50 years we're likely to let most of it sit in the ground because pulling it out is too expensive except for certain scientific testing.

    And in 50 years, they will cap the wells they are using un-cap the previously capped wells which weren't producing as rapidly as they had, and start using them again for another 50+ years. There are more wells capped (which will likely produce again at higher yields than previously) today than there are wells in use.

    --
    ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  82. Re:something about reservoirs by Anonymous Coward · · Score: 0

    Run-of-river has it's own set of problems. In BC they've had big problems, include de-watering creeks and fish-kills. DFO complain about how they kill fish.

    http://www.globaltvbc.com/run-of-river+projects+are+killing+fish+according+to+foi+documents/6442599542/story.html

  83. Re:Scarce? Where? by Anonymous Coward · · Score: 0

    Thus the 'peak oil' - at some point extraction cost will exceed the economic worth, and production will start dropping.

    That's not peak oil - that's the end of oil, when nobody bothers extracting it because it's not worth the effort. Peak oil is when production stops increasing and starts to decrease: because the amount of oil that's worth extracting is smaller this year than last year.

  84. Re:Scarce? Where? by Jmc23 · · Score: 1

    There's always the slim chance that humans will mature and realize that the environment is more important than their lavish unnecessary lifestyles.

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  85. Obviously more than one type of fossil fuel by dbIII · · Score: 1

    In real life we have hundreds of years of fossil fuels left.

    Yes, but the easily accessible, usable and transportable liquid oil is being used up. Coal is cheap but not as easy to use on a small scale. Changing coal to oil or even oilshale to oil adds a lot of extra expense, and while plenty of gas (gas as in propape, butane etc not gasolene) is available it's relatively difficult to transport and store in comparison.
    So while fossil fuels are not running out the cheap and easy stuff is.

    technology also finds new ways to get at and find oil.

    I see now, you are pretending to be the joke economist in a crashing plane waiting for someone to sell him a parachute. It's not a simplistic curve that goes up forever - real geological structures that contain oil under a lot of real rock are finite and not infinite, and as the cheap and easy stuff is used up it gets a lot harder to find or expensive to drill down to the other stuff. There is no instant technological fix for things like getting oil out of shale - real physics gets in the way (volume increase during oil extraction - so the stuff needs to be dug up as if it is much harder coal only producing less energy per tonne).
    It's also odd that you are describing the cheapest form of power per MW as a dead end which makes we wonder why you thought you knew enough about this topic to be able to add anything to the discussion. The price per MW decreases with scale for hydro, but at small scales where it is not directly cost competive it is still used due to the rapid startup time (typically less than a minute instead of several hours for any thermal solution) so that it can be brought on or offline rapidly as needed. That's why there is a lot of mini-hydro sometimes coupled with pump storage to cover peak loads.

  86. Look it up guys by dbIII · · Score: 1

    Why invent a new personal definition of peak oil? Just look it up instead of making shit up, but at least you had the decency to list your own personal definiton.
    Also, sadly, you got your description of Nuclear backwards for now (but hopefully not for long) - it is only viable in political arenas - Japan with the short term energy independance goal in case they get blockaded for a year or two, a cover for a weapons program (Egypt, Pakistan, Indonesia, North Korea, South Africa etc) or with France etc a not yet fully viable spinoff of a weapons program with a lot of tax money propping it up. Please keep reading before you call me names. There has been a lot of progress and reactors such as pebble bed (built) and accelerated thorium (under construction) are showing a lot of promise, and reactors such as the AP1000 (under construction) could come close. So while the fanboys of 1970s nuclear technology will tell you that it's already perfection and only stopped by those hippies and their dog, there it is instead still an evolving new technology that needs a few more pilot plants before committing to a lot of reactors that no bank on earth is going to finance at this point anyway. With all the exotic technology involved with nuclear reactors you need to build them big (or a lot of little ones in the same place) to compete with other technologies. The edge nuclear power has over coal and oil is much higher steam temperatures - that advantage comes with a cost in materials which becomes less important as the scale increases. At this time financial (not political) constraints along with the technological ones are preventing the construction of much in the way of nuclear reactors - in fact it's a political action to override that and get one built. Private enterprise alone is not going to build a reactor anywhere at this point. Give it a few years (and some government funded R&D) and that may change. For now Westinghouse et al spend more money per annum on lobbying than they do on R&D so it's going to have to be government money.

    1. Re:Look it up guys by Firethorn · · Score: 1

      Call you names? That's not good debating technique. I might attack ideas, but not you. Line breaks would be nice though.

      Why invent a new personal definition of peak oil? Just look it up instead of making shit up, but at least you had the decency to list your own personal definiton.

      I thought my definition was pretty much standard? It's the point where oil production levels out and starts decreasing because extraction costs have risen to the point that increasing production further isn't economical. Whether that's because the economic gain is less than the cost, or because an alternate has risen that has a better benefit ratio.

      There has been a lot of progress and reactors such as pebble bed (built) and accelerated thorium (under construction) are showing a lot of promise, and reactors such as the AP1000 (under construction) could come close.

      Pebble bed reactors aren't showing as much progress as I'd like. I really like the promise of thorium. I'm not a fanboy of 1970's tech, matter of fact, I'd be supporting shutting down the reactors from that time period as soon as we finished replacing the coal power plants(sooner in a few cases).

      The edge nuclear power has over coal and oil is much higher steam temperatures - that advantage comes with a cost in materials which becomes less important as the scale increases.

      Source on this? Hate to break it to you, but to my knowledge coal plants(~374C) actually get their steam HOTTER than nuclear plants(~350C). Heck, there's a coal fired plant that reaches 600-620C. This could be fixed by newer nuclear plant designs, but the old designs just don't get that hot. I'm also irked that our environmental regulations often mean older, less efficient and more polluting plants keep operating under grandfather clauses than getting new plants built. That goes for ALL plant designs, coal, nuclear, even gas.

      There's not much more 'exotic technology' in a nuclear reactor, one could even argue that there's less, than what's in a modern 'clean coal' plant.

      At this time financial (not political) constraints along with the technological ones are preventing the construction of much in the way of nuclear reactors - in fact it's a political action to override that and get one built.

      An absolutely HUGE portion of the cost is the permitting process, and that's political. Fix that and you'd see more reactors built. Personally, my goal power proportions is 40% nuclear, 20% wind, 20% solar, 20% other(hydro, biomass, etc...)
      Right now, about 20% of power in the USA is nuclear and is provided by 104 reactors. So figure on building ~208(increase to 40%, decommission the older less safe reactors). But new reactors tend to be bigger than the old ones: Another calc: 806.2 TWh/year. A 1 GW reactor like the AP1000 should produce ~8TWh a year. So replacement would only be 100 reactors, or 200 to both expand and replace. Of course, the AP1000 is actually a 1.2GW reactor, so it'd only be 167 reactors. Figure on a 5 year build, break ground on 1 this year, 2 next, then 3 and so on, and you'd be finishing up in 25 years assuming a few delays. Peak would be 18 years from now, starting up 14-18, depending on slippage and expansion.
      167 more or less identical reactors would give you lots of comparative advantage on safety and maintenance engineering costs. Still, I think that making a quarter of them AP1000, and 75% other standardized designs would be good. Don't forget to set them up to use the waste heat for something useful, if possible. Up in Alaska use some of the micro-nuclear plants to also provide steam for heating buildings. Some of those are in the single digit to low double Megawatt. Heck, get a thorium design out, and at least build a test plant.

      --
      I don't read AC A human right
    2. Re:Look it up guys by dbIII · · Score: 2

      I thought my definition was pretty much standard? It's the point where oil production levels out and starts decreasing because extraction costs have risen to the point that increasing production further isn't economical.

      The second part is the extra baggage. By what the oil industry uses the peak is just a maximum on the production over time curve and the reason is another issue to talk about. Technically peak oil was in 2008, it may not be the final peak, but we're definitely not extracting as much oil as was being done back then. The economic crisis was the reason for the sudden drop in production.

      There's not much more 'exotic technology' in a nuclear reactor, one could even argue that there's less, than what's in a modern 'clean coal' plant.

      Now where on earth do you get that rubbish from? I used to be an engineer with a focus on metallugy in the electricity generation industry and since I was dealing with high temperature pipework I was reading a lot about similar materials in reactors and being assisted by people that worked with reactors and had developed some good techniques in remaining life analysis. Sorry but you are wrong, there's those things called neutrons that do a lot of damage to materials that are not designed to survive being bombarded by them, there's the exotic stuff you need to handle liquid sodium cooling if it's there, temperatures and pressures are higher, the list goes on. If nuclear didn't give you more steam it would be fairly pointless wouldn't it? Hotter and higher pressure means you need to design for it, it should be obvious.

      Source on this? Hate to break it to you, but to my knowledge coal plants(~374C) actually get their steam HOTTER than nuclear plants(~350C)

      Look up "flame temperature". That's your limit with combustion. Nuclear has different limits. If nuclear couldn't give you hotter steam and a better temperature difference then nobody would have ever suggested nuclear power. Look up "carnot cycle" if you don't know of it yet. It's the idea behind nuclear power so if you don't know the simple concept of how it works then all you have to rely on is truth in advertising.

      167 more or less identical reactors would give you lots of comparative advantage on safety and maintenance engineering costs

      Not until after you've had one good pilot plant, as France shows where they recently had to fix a newly discovered fault in all of their standarised reactors. Economies of scale only work when you have something that doesn't need to be redone, and since all of the current operating reactors are nowhere near as good as seems possible in the short term or are experimental (eg. no AP1000 is running yet), there is nothing mature enough to immediately propose something like that. Also there are major manufacturing bottlenecks with turbines alone let alone reactor parts so a lot of those reactors would be built one after the other - a very long timescale by which time why bother building a GenIII+ design like the AP1000 at all when there's probably been some GenIV stuff running for a few years by the time you've build your 40th reactor.

      An absolutely HUGE portion of the cost is the permitting process

      Not in China but those AP1000s (one almost finished) still were not cheap. The Indian stuff may cost less again but that's still a vast expenditure. I'm not in the USA so I'm ignoring your regulatory basketcase and energy sector corruption because it would have to be reduced or removed before any large project is possible anyway. It's nothing but a barrier to entry for new players and to keep the money going into the current pockets no matter what clothing it wears. A company with the right connections could probably do things as cheaply as China. In competition with that well connected company and they'll bleed money forever and the plant will ne

    3. Re:Look it up guys by Firethorn · · Score: 1

      Sorry but you are wrong, there's those things called neutrons that do a lot of damage to materials that are not designed to survive being bombarded by them, there's the exotic stuff you need to handle liquid sodium cooling if it's there, temperatures and pressures are higher, the list goes on. If nuclear didn't give you more steam it would be fairly pointless wouldn't it? Hotter and higher pressure means you need to design for it, it should be obvious.

      Okay, a nuclear reactor has to worry about neutron flux. In a clean coal plant you have to worry about the equipment that removes the mercury, lead, sulfur, and all the other pollutants. You have equivalents of catalytic converters, and as I mentioned, the temperature is actually lower in current nuclear plants. They need to move away from water cooling before they can get them hotter.

      Look up "flame temperature". That's your limit with combustion. Nuclear has different limits. If nuclear couldn't give you hotter steam and a better temperature difference then nobody would have ever suggested nuclear power. Look up "carnot cycle" if you don't know of it yet. It's the idea behind nuclear power so if you don't know the simple concept of how it works then all you have to rely on is truth in advertising.

      I listed my sources, did you check them out? How about you check your own sources? Charcoal can reach 750-1,200 C per the chart, and it's pretty much the same as coal. Also, you can boost temperatures by manipulating the atmosphere - coal plants today operate in 'forced draft' modes, much like how old time blacksmiths could melt iron with charcoal by operating a bellows to increase the temperature.

      Not until after you've had one good pilot plant, as France shows where they recently had to fix a newly discovered fault in all of their standarised reactors.

      Hmm... Are you completely reading my posts? I revised my post saying to make maybe a quarter of them AP1000, but then again you did mention 40 - and that would be a quarter. Of course, by my time scale we'd be breaking ground on the 40th reactor in the 9th year, which wouldn't leave time for more than a test advanced reactor to be breaking ground, much less completed and operating. The AP1000 is pretty much an evolutionary, not a revolutionary design. It shouldn't hold too many surprises. Still, we are looking at having 6-10 under major construction when the first comes on line, with two more about to be. Heck, with enough construction delays the ones started second might actually beat the first. Hmm... How long do you think the test plant needs to operate before you start duplicating it?

      As for the construction bottlenecks -that's why I wanted to start with only 1 reactor. I just view the problem as big enough we really need to hurry on it. You're going to have to build manufacturing to build the manufacturing. Also, it gives you a year of experience with the construction of the first reactor before you start on the 2nd two, and so on...

      As for economy of scale - like I said, it's mostly engineering savings. You only have to engineer ONE fix(hopefully), that you can spread to ~40 plants. Rather than the current situation of engineering a solution for one pretty much unique plant every time. Yes, a recall/fix costs more dollars when you have a lot of identical plants, but it's fewer dollars per plant because you don't have to duplicate all the work. Plus, something goes wrong in one plant, you can distribute the fix action to all of them, know what to look for in the rest. It happens with planes all the time.

      China's reactors are ending up more expensive, yes, but let's face it: Prototypes tend to be expensive. I've seen figures that the first AP1000 is likely to cost almost twice as much as the next due to all the permitting and 'practical R&D'.

      --
      I don't read AC A human right
    4. Re:Look it up guys by Firethorn · · Score: 1

      Where did my statement on Nuclear power temp go? - Yes, I very much know about the Carnot cycle, and it's not limited to nuclear power. It's for ALL heat engines. Basic synopsis from memory: temperature differential sets maximum efficiency. Increase the temp of your hot side, lower the temp of your cold, and efficiency increases. Theoretical efficiency is perfect only if you have an unlimited absolute zero heatsink.

      In my earlier post, I mentioned that current nuclear plants only get up to around 350C. There are thus far theoretical ones that can get much hotter, but they have to move away from water as a coolant to do it.
      Hot side: 350C = 623k, Cold side: 100C = 373k, I use 100C as the cold side because even with tricks like lowering the pressure below 1 atm, you don't want the water vapor condensing in the turbines.
      Max efficiency: ~40%. Real world it's more like 30%.
      The coal plant that gets it's hot side up to 600C?
      600C = 873k, 100C = 373k, 57%. Making the advanced coal plant actually MORE efficient thermally.

      --
      I don't read AC A human right
    5. Re:Look it up guys by dbIII · · Score: 1

      and as I mentioned, the temperature is actually lower in current nuclear plants.

      With respect, where the hell are you getting this from and why are you so confident? Your odd 620C isn't very hot at all - scroll down to superheated steam boilers:
      http://en.wikipedia.org/wiki/Boiler
      Since with nuclear you don't hit the same limit of flame temperature so you can go far hotter and get greater efficiency, but you have to pay for that in other ways. Making it as large as you can makes some costs less of a percentage of the total which is why they have to be very large to compete.

      Of course, by my time scale we'd be breaking ground on the 40th reactor in the 9th year

      That's not even funny so I really don't see the point of that statement. If you were actually serious somebody has been pulling your leg - take a look at time scales for even small conventional thermal power plants and then read a bit about the construction times of the current operating nuclear powere plants to see how badly you've been fooled.

      Rather than the current situation of engineering a solution for one pretty much unique plant every time

      I gave the reasons for that above - they are currently steps in an experiment and incremental improvements instead of a solved problem. That won't happen forever but just building a pile of flawed plants at once is like trying to have a baby in a month with nine mothers. Getting it right the first time is somewhat naive since it is cutting edge technology. Apollo 2 didn't land on the moon.

      Charcoal can reach 750-1,200 C per the chart, and it's pretty much the same as coal.

      Either I must have missed the 6000BC steam powered industrial revolution or you've made a very incorrect assumption. Take a look at this paper which turned up near the top of a google search and note the flame regions at 2200K in a diagram in section 4.1 (http://flox.com/documents/03_Coal.pdf)

      In a clean coal plant you have to worry about the equipment that removes the mercury, lead, sulfur, and all the other pollutants.

      Scrubbers are cheap so long as you have access to a LOT of water. Bag filters are cheaper but only get those you listed and not the NOx and SOx. It's irrelevant anyway because I was writing about very expensive bits in or near the reactor, and slightly more expensive bits in the boiler. The cutting edge of technology isn't cheap.

    6. Re:Look it up guys by dbIII · · Score: 1

      about the Carnot cycle, and it's not limited to nuclear power. It's for ALL heat engines

      I never said it wasn't. From the point of view of the turbines a nuclear plant is just a hotter coal or oil fired plant.
      I've got no idea where you are getting those weird numbers from and getting everything backwards. Why would you bother to run a nuclear plant cold and at low pressure when you can get more efficiency running it hotter and high pressure?
      It appears that you are getting confused between the heat source and the heated up steam. The steam never reaches the flame temperature. A reactor can put more heat into the steam than a flame and give you more energy at both higher pressures (which reduces the temperature) or higher temperates (lower pressure for the same energy input).

    7. Re:Look it up guys by Firethorn · · Score: 1

      With respect, where the hell are you getting this from and why are you so confident? Your odd 620C isn't very hot at all - scroll down to superheated steam boilers:

      1. Did you follow the links I posted? They're right there.
      2. RDK8, Karlsruhe, Germany, 600C & 620C (reheat) steam temperature 46% net efficiency. I posted the temperatures as a link earlier, so why are you asking now?

      Since with nuclear you don't hit the same limit of flame temperature so you can go far hotter and get greater efficiency, but you have to pay for that in other ways.

      Ah, I see the problem now. Okay, here's the reason why modern high efficiency fossil fuel plants have higher steam temperatures(And therefore efficiency) than traditional nuclear plants. You mentioned neutron bombardment, but neglect a crucial fact: Current nuclear power plant cores are liquid water cooled. Depending on the design, the water even acts as a moderator - no water, the reaction doesn't work right. In order to keep water liquid at these high temperatures, you have to pressurize the reactor. There's a limit on how much pressure you can build the vessel to withstand, thus the limit on steam temperature with BWR/PWR reactors. Now, if you switch to liquid metal, salt, or even helium you can do away with most of that pressure, and are thus free to raise the temperature. Heck, with the first two you can theoretically run the reactor at 1 atm. There's even some theoretical reactors that exceed the melting point of Uranium, and operate completely in a liquid state. Still, all the commercial nuclear reactors in the USA right now, and most of the rest of the world, are of the BWR/PWR type.

      So, you've mentioned 2200K - 1, 927C. I've posted sources on
      A BWR operates at ~75 atm, and a PWR around 158. That limits a BWR to 269C, and a PWR to 315C using this calculator.

      With fossil fuel power plants, as you've amply proven, you don't have any need for the water to be liquid, and you CAN get the temperatures up into the supercritical range.

      Since with nuclear you don't hit the same limit of flame temperature so you can go far hotter and get greater efficiency, but you have to pay for that in other ways. Making it as large as you can makes some costs less of a percentage of the total which is why they have to be very large to compete.

      The sources I'm seeing say that the large pressure vessel needed makes having it handle higher pressures MORE difficult, not less.

      Either I must have missed the 6000BC steam powered industrial revolution or you've made a very incorrect assumption. Take a look at this paper which turned up near the top of a google search and note the flame regions at 2200K in a diagram in section 4.1 (http://flox.com/documents/03_Coal.pdf)

      Why are you trying to prove me right? Back on the pollution stuff - there's a lot of cutting edge technology even in coal today.

      I'm sure there's more, but I have to go.

      --
      I don't read AC A human right
    8. Re:Look it up guys by dbIII · · Score: 1

      We appear to have got some wires crossed about limits of heat input (Watts you can pump into the fluid) which is why I've been writing about flame temperature being a hard limit. Nuclear has other limits depending on the size and design of the reactor, leading to some reactors producing far more heat than the largest practical flame heated boilers. Does that clear up the miscommunication and show why nuclear power was proposed in the first place? The only problem today is putting that into practice which is not helped by there being very relatively little R&D over the past 40 years.

    9. Re:Look it up guys by Firethorn · · Score: 1

      We appear to have got some wires crossed about limits of heat input (Watts you can pump into the fluid) which is why I've been writing about flame temperature being a hard limit.

      What set me off was your saying that nuclear plants run hotter than coal plants. I knew that to be untrue; thus responded. I acknowledged in my very first post that nuclear plants could be run hotter with modern designs, though I didn't specify changing the working fluid until later.

      The thing about 'largest practical flame heated boilers' is that they're very easy to parallelize. You need more power, you add boilers. The local coal Heat&Power plant has 5 boilers, installed over a period of 35 years.

      That's not as easy for nuclear plants, at least not yet. Liquid Thorium reactors are promising in this regard though.

      --
      I don't read AC A human right
    10. Re:Look it up guys by dbIII · · Score: 1
      Heat is in Watts, but some confusion with temperature and some incorrect late night posts on my part didn't help.

      The thing about 'largest practical flame heated boilers' is that they're very easy to parallelize. You need more power, you add boilers.

      Pebble bed also exploits this idea to produce as much energy from several small reactors as could be produced from a single large and less inherently safe reactor. There are a few other designs (eg. designs out of Los Alamos based on submarine reactors) along those lines. After TMI a lot of work went into reducing the size of reactors and we are seeing some of the results now.

      On the coal side adding more boilers and supporting infrastucture is difficult because for a few reasons - they are huge and take up a lot of land and all the associated requirements (eg. cooling water dam, ash dam, other ash storage, etc) take up even more. That's another reason why energy gnerating nuclear plants are built at huge capacities, since at a point a very large nuclear plant is going to look more economicly attractive than a very large coal fired plant. That's for the entire thing not individual reactors.
      As an aside, the people that push obsolete nuclear to prey on the taxpayer love to use that real economy of scale as the foundation for a lie. They like to compare very large nuclear under perfect theoretical conditions to very large photovoltaic arrays of 1970s technology and 1970s pre-electronic revolution fabrication efficiency. Since nuclear scales up while if you double the area of photovoltaics you only get double the energy there will always be a point where most nuclear will win on a direct single factor comparison. Skewing the game by pretending solar never got to benefit from the economy of scale from microprocessor fabrication brings that crossover point down and makes even the nuclear dinosaurs look good. There's a lot of counterproductive bullshit being spread by those that spend more on lobbying than R&D. Also photovoltaics have their own practical existing niche so those that use them as a strawman in comparison to unbuilt reactors are setting themselves up for a fall.
      We don't need a huge number of obsolete plants, we need a slightly less number of more practical plants built in whatever time it takes to get it right. By the time more than a decade is spent building a very large old reactor design some upcoming small ones could have gone through a couple of prototypes and have the final production design built. That takes the sort of work that is currently only going on in India and China (with help from Germany etc). The USA only has tiny pockets of expertise to attempt such an approach and it will take a few years to build up from there.

    11. Re:Look it up guys by Firethorn · · Score: 1

      Heat is in Watts, but some confusion with temperature and some incorrect late night posts on my part didn't help.

      'Heat' is temperature. Watts is power. The relations between the two is complex; but in general the more power involved, the faster the temperature gain/loss.

      On the coal side adding more boilers and supporting infrastucture is difficult because for a few reasons - they are huge and take up a lot of land and all the associated requirements (eg. cooling water dam, ash dam, other ash storage, etc) take up even more.

      Perhaps, but my local power plant is only about the size of a hanger. Compared to less dense power supplies such as solar and wind, the footprint isn't a problem. We don't have any special need for it to be denser.

      . Skewing the game by pretending solar never got to benefit from the economy of scale from microprocessor fabrication brings that crossover point down and makes even the nuclear dinosaurs look good. There's a lot of counterproductive bullshit being spread by those that spend more on lobbying than R&D. Also photovoltaics have their own practical existing niche so those that use them as a strawman in comparison to unbuilt reactors are setting themselves up for a fall.

      Where did this come from? I actually proposed having 20% of the energy come from solar. Solar is still expensive, but then, ALL new power sources today are expensive. It makes sense to build solar in ideal areas, but 'ideal' doesn't cover more than a fraction of our electricity needs. And I certainly hope I haven't given the perspective that I want to build 'dinosaurs'. I want GenIV reactors, darn it! I want micro-nukes providing electricity and heat to small Alaskan towns!

      Building Gen3 reactors for a bit would be to get the experience needed and to at least start replacing polluting coal and end of life nuclear plants.

      --
      I don't read AC A human right
    12. Re:Look it up guys by dbIII · · Score: 1

      Where did this come from?

      Sorry, thought I made it clear with the bit before it:

      As an aside, the people that push obsolete nuclear

      Which of course is not the people that want GenIV reactors, or the micronukes that grew out of the lessons of TMI. Until relatively recently even Westinghouse was pushing hard to get taxpayers money to build TMI painted green instead of more recent technology. Some of the US nuclear lobby is still pushing the dinosaur tech.
      As for heat, I meant Joules but appear to have posted with most of my brain turned off. Also that footprint is huge for plants on the GW scale and does make it difficult to add more boilers - at one coal fired power station I did some work at in the 1990s a large portion of the side of a hill had to be removed to make more space for one more boiler to provide only another 440MW.

    13. Re:Look it up guys by Firethorn · · Score: 1

      Until relatively recently even Westinghouse was pushing hard to get taxpayers money to build TMI painted green instead of more recent technology.

      The fixes implemented after TMI pretty much precludes another TMI. It's like continuing to lambast Pintos for catching on fire if Ford had implemented a fix as soon as it was discovered.

      If you want to really simplify things, the AP1000 design is a generational change from the Babcock&Wilcox, given that both are PWR plants. But that would be a bit like comparing a 2000 model honda civic with a model T. - The new design boasts 50% fewer safety valves, 80% less safety piping, 85% less control cable, 35% fewer pumps, and 45% less seismic building volume. Eliminating parts might seem dangerous, but it also means that there are fewer things to break/go wrong.

      --
      I don't read AC A human right
  87. Re:Scarce? Where? by dbIII · · Score: 1

    Ties with nuclear? Where is that magic nuclear plant? What's it's name? Where do I find the total for capital and operating costs for that plant?
    Sorry kid, you've been conned by a very audacious lie. Watch out if somebody tries to sell you a bridge. Nuclear has it's place but you've been fooled by a very wild claim.

  88. In the US, we've already hit peak oil by musicalmicah · · Score: 1

    Thus the 'peak oil' - at some point extraction cost will exceed the economic worth, and production will start dropping.

    The United States hit domestic peak oil production in 1970.

    1. Re:In the US, we've already hit peak oil by Firethorn · · Score: 1

      Production, not usage though. It's now a global product.

      --
      I don't read AC A human right
  89. How much water to do 20 KVA (kw) by barv · · Score: 1

    Assume two lakes with a water level difference of 2 meters (a bit over 6 feet).

    20000 watts = mgh

    Where m = kg/s, g=9.8, h=2m

    Solving for m gives 1000 kg/s (1000 liters sec - about 400 gallons/sec)

    So 100% efficient needs one tonne water per second. That size about 50% efficient.

    That's a pretty big turbine. 2 tonnes of water a second. A NS a lot of water.

  90. Re:Scarce? Where? by rgbatduke · · Score: 1

    I should say that hydroelectric ties with nuclear for (both) plants built a long time ago. There is almost no new nuclear construction, but I agree that levelized costs for new nuclear are higher (hopefully because they are spending more making them safe). Current levelized costs are also inflated for new coal and gas because of the "need" (for better or worse) for carbon scrubbers and so on to meet new emissions standards.

    Otherwise hydro still has an advantage over nearly anything except perhaps NG in new construction. No fuel, established, straightforward technology and engineering, low operations and maintenance.

    However, this just emphasizes the point I was trying to make, which is that hydro isn't stupid (where it works), it is actually brilliant -- almost the cheapest possible power. Another day we can debate the relative merits of nuclear, and whether new nuclear costs would diminish if anyone were to start to actually build new nuclear plants in the US at a rate of more than 4 at a time on a good year. Suffice it to say that cost estimates are highly volatile and have varied by as much as a factor of two in the last six or seven years (depending on who is doing the estimates and what their motivation and alignment is).

    This volatility (part of which is indeed related to uncertainties in fuel price and long term supply) is actually something that further favors fuel-free electricity (or, in nuclear, the development of Thorium based plants). Much-maligned onshore wind ranks pretty high in http://en.wikipedia.org/wiki/Cost_of_electricity_by_source. But look for levelized cost of PV to drop as the technology advances, both the up-front capital cost, fixed O&M (currently absurdly high compared to what it will become), and transmission costs. A drop in total cost by a factor of 2 over the next decade (quite plausible given Moore's Law for the actual cells plus economies of scale realized with larger scale implementation) makes it competitive with everything, especially if one allows for the gradual increase in fixed (fuel) O&M for most generation methods. A second factor of 2 over the following decade will make PV cheaper than everything but -- perhaps -- hydro.

    IMO -- gazing into a cracked crystal ball, perhaps -- by the mid 2020's we will see a strong run on PV solar construction, sooner if certain key problems (such as power storage in advanced new batteries or a quantum leap in constant cost efficiency or a quantum drop in constant efficiency cost) are solved. I have a lot of faith in the science and engineering here -- it's just a matter of time before they figure out solar cells that cost $0.25/watt instead of $2.25/watt (which is roughly their current cost at consumer retail, although around half of this in volume). There is also a lot of room to drop the cost of manufacture and installation of plant-ready units.

    A lot of fun to speculate about (and eventually in) actually...

    rgb

    --
    Even when the experts all agree, they may well be mistaken. --- Bertrand Russell.
  91. Re:Scarce? Where? by dbIII · · Score: 1

    You didn't name the plant. Nobody ever does. I wonder why?
    Sorry kid, you've got some good points there but that was not one of them. I've been hearing that shit since the 1980s and nobody can ever name the magic plant that can even break even. You've been conned.

  92. Re:Scarce? Where? by rgbatduke · · Score: 1

    Wow, so all those companies that build nuclear power plants, they must be run by really stupid people who like to lose money! I never knew. I thought Shearon-Harris (about 15 miles from where I'm sitting in NC) was profitable, but now I see that it is a loss leader or something. Thanks for opening my eyes!

    rgb

    --
    Even when the experts all agree, they may well be mistaken. --- Bertrand Russell.
  93. Re:Scarce? Where? by Firethorn · · Score: 1

    I have no doubts they'll uncap some of the wells, that they'll get at least a few more years out of them. However, most of the older capped wells were always too low capacity - they're more likely to drill new ones in the same area that go deeper. Even then, they're unlikely to get 50 years out of one.

    --
    I don't read AC A human right
  94. That sort of comment is depressing by dbIII · · Score: 1

    They don't lose the money. The "stupid person" is you if you are paying taxes. Your ignorant attempt at sarcasm simply shows you are unaware of that, thus know next to nothing about the subject but still want to make a noise and it probably says a bit about your education system being insufficient to prepare people to operate as informed citizens :(

    1. Re:That sort of comment is depressing by rgbatduke · · Score: 1

      Teach me, Obi-wan. Provide me with an objective third party analysis of the cash flow for Shearon-Harris that demonstrates how my tax dollars are being sucked into subsidizing it any more than they are (say) being sucked into subsidizing the oil industry or any of the other energy producing industries, all of which (as public utilities) get a variety of sweetheart deals to locate plants here or provide power there. But seriously, I am happy to learn. Just not learn from sarcasm and an assertion that there is some sort of global conspiracy to line the pockets of companies for building nuclear reactors. Back in the 50's yeah, when we were building all of our enormous nuclear arsenal decisions were made (such as dumping Thorium in favor of Uranium) that made nuclear power generation an easy way for the government to get subsidized plutonium as a byproduct. But even then, nuclear power was about making money for investors.

      So please, back up your assertions of conspiracy and major government subsidies (compared, in all fairness, to those available throughout the industry) with non-bullshit numbers from believable sources, or I'm afraid I'll have to just believe the Wikipedia pages that has government reports that list the comparative fully levelized costs of electrical power made in various ways, nuclear in particular (assuming new, current construction). At least they list their sources. Of course, being a conspiracy I'm certain they are all lying, but I'm still very curious as to how you know the Truth, and just where this Truth is to be found.

      Ignorantly yours (but awaiting objective third-party non-bullshit Enlightenment),

      rgb

      --
      Even when the experts all agree, they may well be mistaken. --- Bertrand Russell.
    2. Re:That sort of comment is depressing by dbIII · · Score: 1

      Take a look at those references the wikipedia pages are based on and don't accept the "everyone in US energy is corrupt so it's the same worldwide" bullshit. It's amazing you swallow that whole while using the words "conspiracy theory" without understanding that you have been conned into pushing one. Wake up instead of sleepily pushing somebody else's bullshit.
      The truth is very easily found. Talk to somebody that has worked in the energy industry in at least two countries, or start reading beyond the sports section in newspapers.

  95. Re:Scarce? Where? by jwhitener · · Score: 1

    Why do you think that wind is a dead end? We have it all over Oregon mixed throughout farmland and it is working quite well. For the rest of the country with little farmland, what is wrong with floating offshore wind farms? There are numerous examples of offshore wind farms working. And currently under development are deep ocean wind farms, 100+ miles offshore. We have way more water area than land area.

    And cheap, non-rare material batteries are close to commercial existence. http://web.mit.edu/newsoffice/2012/liquid-batteries-0214.html .

  96. Re:Scarce? Where? by jwhitener · · Score: 1

    I've seen this stated twice now, that wind is a dead end. Why?

    Oregon has 7% (up from 1% 12 years ago) wind power now, and climbing. http://en.wikipedia.org/wiki/Wind_power_in_Oregon
    MIT is really close to large scale power storage http://web.mit.edu/newsoffice/2012/liquid-batteries-0214.html

    There are numerous examples of offshore wind farms that appear to be working well. We have way more ocean space than land space. I listened to an NPR story about large scale 100+ mile offshore wind farms under development right now.

    Sure, it may only be a slice of our total for the foreseeable future, but wind certainly seems like we should keep pursuing it.

    From a Harvard study http://www.pnas.org/content/106/27/10933.full.pdf

    In the lower 48 states, the potential from wind power is 16 times more than total electricity demand in the United States, the researchers suggested

  97. Re:Scarce? Where? by RockDoctor · · Score: 1

    The global taste for fossil fuels, especially liquid fossil fuels is truly enormous and growing (think China and India who are attempting to get to US per capita energy expenditures).

    Actually, I think that what they're attempting to do is achieve Western/ First World levels of living standards. As a consequence of that, they are very likely to increase their per capita energy consumption, but you'd have to search long and hard to find a third-world person who actually gave a real shit about their energy consumption, compared to the huge shit that they give about their standard of living.

    --
    Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"