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Solar Power Eliminates Utility Bills in U.S. Home
skyhawker writes "Yahoo! News is running an article about a New Jersey home that uses solar power to provide 100% of its energy needs, including fuel for the owner's hydrogen fuel cell-powered automobile. From the article: 'Strizki runs the 3,000-square-foot house with electricity generated by a 1,000-square-foot roof full of photovoltaic cells on a nearby building, an electrolyzer that uses the solar power to generate hydrogen from water, and a number of hydrogen tanks that store the gas until it is needed by the fuel cell. In the summer, the solar panels generate 60 percent more electricity than the super-insulated house needs. The excess is stored in the form of hydrogen which is used in the winter -- when the solar panels can't meet all the domestic demand -- to make electricity in the fuel cell.'"
Don't sever your connection. If you have any surplus energy, the supplier will pay you for it.
nothing
Read the whole article, please people. . . .
FTA: "While the cost may deter all but wealthy environmentalists from converting their homes, Strizki and his associates stress the project is designed to be replicated and that the price tag on the prototype is a lot higher than imitators would pay. Now that first-time costs of research and design have been met, the price would be about $100,000, Strizki said."
But then again it is more sensational for you to use the R&D cost of $500,000 right?
Self proclaimed wannabe geek. You know how it is. Most of us who read this stuff probably fit in that category.
They probably wouldn't be too upset. Integrated solar shingles have come a long way: http://www.solar-components.com/pvshingl.htm
-Rick
"Most people in the U.S. wouldn't know they live in a tyrannical state if it walked up and grabbed their junk." - MyFirs
Most solar panels are covered under warranty for 80% of their maximum rated power output for 25 years, and the panels themselves are generally expected to last around 40 years, though efficency does decline over time.
ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
New solar cells developed with nano-technology at the University of Toronto (http://www.news.utoronto.ca/bin6/050110-832.asp ) convert light from the blue-yellow end of the spectrun down to the near-infrared (current cells work only in the bluie-yellow end of the visible spectrum). This could increase the conversion efficiency by a factor of 5. Additionally, this technology lends itself to be able to literally print the cells on a plastic substrate, significantly lowering manufacturing costs.
Currently, a typical home solar setup produces about 4.5 KW (max) and costs about US $25,000 to install. Payback takes about 20 years. If this new technology could change both numbers by a conservative factor of say, 3, you'd be looking at 13.5 KW (max) systems going for about US $8,500, and payback times of 5 years or so. Then, you'd have something.
Look Out Above!
What is the Energy Payback for PV?
Energy Payback of Roof Mounted Photovoltaic Cells
>>the reason so few people are green
>I should really improve my insulation, but don't. Why? Because there's no payback in natural gas savings.
>...so I do the things I can afford: Recycle, fix dripping taps, take the bus when I can. I realize there are often higher-purpose reasons than cost savings, but many people simply can't *afford* to be green.
I spent less than $700 and one full day of labor for me and my wife on a weekend on insulation on my house Fall of '05. The savings on the utility bill paid for the cost of the insulation (including the price of renting the blower to blow it in and buying a decent ladder) in less than a year.
I also replaced all the windows in my home with triple pane Low-E argon filled windows earlier this year. Yeah that ran me just shy of $5000 installed. I financed it through the same company I bought the windows from 1 year same as cash. I expect the energy savings to pay for the windows in roughly 7 years. The new windows also look a lot better and came with a lifetime warranty against breakage that is transferable if I sell my house. The added value to my home will almost pay for the windows by itself if I sell the house.
I agree that solar panels, hybrid cars, even projects like the windows I did can have a high up front cost. A lot of people cannot afford that cost up front, but simple projects like insulation, sealing around doors better, etc. are cheap and really will start having benefits that add up pretty quickly.
But you happily store gasoline? You do realize that hydrogen has roughly 60% of the explosive power (potential energy) that gasoline does don't you? Storing hydrogen is far safer than storing propane even. Propane is also more explosive and since it is heavier than air it can fill areas in the event of a leak creating a massive explosion hazard. Hydrogen, on the other hand, can be stored in metal hydrides and be completely free from the possibility of accidental leaks even in cases of tank punctures and for that matter total tank destruction. Also, if the fuel hydrogen does leak it rapidly heads up and out of the atmosphere meaning your kids won't end up suffocating in a pool of sunken fuel with no oxygen.
But you are of course free to think what you like.
Say bad words about my book, in cold oatmeal, or I shall sue!
I could buy a hybrid car. I don't. Why? No payback
People play the no payback card all the time but few stop to do the math.
I bought a used Prius (1 year old) for $18,000. My Wife bought a minivan at at the same time for the same price. The math for the no payback was for new vehicles for those who drove fewer than 20K miles/year and gas was $1.50/gallon.
I had the forsite to know the resale value whould hold up on the Prius (have fun, look up the resale of a 02 Caravan and a 02 Prius). I am not singing the depreciation blues. I can get most of my money back out today if I wanted. With gas at near $3.00 a gallon and I'm reaching 100K miles, I am seeing my payback now. Some cars need a transmission replacement for nearly $4K after 100K miles. The $5K battery replacement everyone was afraid of is now a $3600 dollar item, It is cheaper than a transmission replacement. It is possible to replace a failed 7.2V cell instead of all 36 in the entire pack.
As a bonus, my Prius doubles as a replacement source of electric power while traveling or during outages. I have installed a 1KW inverter. While not driving the power not used for the heater/AC, lights, defroster, power steering, air brake compressor, etc, is easly diverted without overloading the electrical system. It is the most fuel effecient electrical generator I have ever used. The car side of things is 20KW. When parked the engine shuts off instead of running constantly. It starts up and runs a few minutes then shuts back down to repeat in about 20 minutes. This is perfect for running the freezer in an outage. I don't have the engine running all the time when it isn't needed.
Add a few CF lights, the laptop, and the TV to the mix and a tank of gas lasts for days unlike a portable generator. I have run 3 days this way and used less than a quarter tank of gas. (13 gal tank)
The truth shall set you free!
Funny, I've had two sets of batteries operating concurrently for 16 years and they are as good as the day I acquired them. That's 24 x 2 volt, 660 amp-hour flooded lead-acid cells.
I maintain them carefully, which is probably why I've never had to replace them, whereas others who think that batteries will look after themselves, seem to be replacing theirs every few years, at great expense.
I'm tired of hearing from all these people WITH NO EXPERIENCE WITH PV SYSTEMS telling the world how inadequate such systems are when I've been off-grid for years with no problems ever.
Then there are the guys who buy a PV panel or two, rustle up a few old car batteries, and think they can live utility bill-free forever...then whine like little girls when they don't get the performance they expected and there system craps out in a short time.
It's like any geek project: you have to plan and maintain.
Calculate the size of your PV array, then add another 50% capacity to cover unforseen loads (which always appear). Those who tell you that the juice dries up at the first sight of a cloud are talking out their asses, as usual. You will still get plenty of amps from a decent array on even the cloudiest of days. The only time your PV panel power quits is at night. If in doubt, add a wind generator to your system.
Obtain the heaviest cable you can. I've seen big systems wired together with ridiculously thin stuff, just to save a few bucks. Result? Burning smells, dim lights, and dashed hopes. And do a nice tidy job with all cable runs and connections. Duct tape and blutak just doesn't cut it. Work like a pro or don't waste your time.
Get a decent regulator and inverter. Over-estimate you loads, so that the unit can cope with peaks you otherwise wouldn't have anticipated. And get the type you can download live data from, as the difference it makes in your ability to manage your system is immense. It's hard manage a thing when you have no clue what it's doing. Extra money, yes, but either spend the cash or stick to paying your utility, the Piss-Or-Get-Off-The-Pot plan.
Acquire the correct battery type. Most people seem to want sealed lead-acid or gel types, which is fine, but they are blackboxware, and almost impossible to maintain, since you don't really know what's happening inside them. I've seen many of those type die brand-new. Why? There's no way of knowing. These types may be "cleaner" to have around the home (no electrolyte top-ups), but in the long term they actually cost a lot more, since you have to replace them fairly often, and a random selection of cells are guaranteed to fail prematurely at awkward moments.
I prefer flooded lead-acid cells. No, you can't use cheap car or truck batteries and have a usable system. It'll be fucked within months, or even weeks. And "Marine deep-cycle" batteries are not much better. You have to use the right type, and as far as I'm concerned that's the (usually) 2 volt flooded lead-acid standby/telecommunication variety. Heavy as hell, very expensive to buy new, but will last most people's lifetime, literally, if properly maintained, which means you have to forget all that shit your friend's cousin's brother told you, and learn something. It's not difficult or time-consuming, but the results are very expensive and inconvenient for the retards to lazy or stupid to take the time to do so.
A working off-grid system is perfectly feasible, a fact which many of us with working off-grid systems can and will attest to. Yes, it takes work, time, and money, and probably cost you less to stay on-grid, but if you don't care about that, or have no choice, then it's easily doable, so ignore the fuckwads claiming it isn't, because chances-are good THEY HAVE NO EXPERIENCE AT ALL WITH THE STUFF THEY'RE BLATHERING ON ABOUT.