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Power Technology

Existing Solar Tech Could Power Entire US, Says NREL 589

derekmead writes "A new report from the National Renewable Energy Laboratory finds that solar holds more potential to generate more power (PDF) than any other clean energy source. The NREL broke things down into four groups: urban and rural utility-scale photovoltaics (giant solar plants, basically) as well as rooftop solar and concentrated mirror arrays. Between those technologies, which are all already on the market, the NREL reckons there's a proven potential for solar to hit a capacity of 200,000 gigawatts in the United States alone. For some perspective, 1 gigawatt is what a single nuclear power plant might generate, and it's more than most coal plants. A gigawatt of capacity is enough to power approximately 700,000 homes."
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Existing Solar Tech Could Power Entire US, Says NREL

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  • by fustakrakich ( 1673220 ) on Wednesday August 01, 2012 @06:06PM (#40849009) Journal

    In a capitalist society, abundance is not a feature.

  • by Anonymous Coward on Wednesday August 01, 2012 @06:12PM (#40849085)

    I see you've abandoned all attempts to actually discuss alternative power, in favor of just making up stupid shit to say about other people. Well done.

    I would welcome better reactors before going straight to $7,000/kwh and covering everything in sight with horribly inefficient pv's.

    But I guess I'm just some kind of hate spewing, earth destroying, hyper-religious jackass. Don't mind me.

  • by Anonymous Coward on Wednesday August 01, 2012 @06:12PM (#40849099)

    ...and if every home can generate their own power at point of usage.. Well there is no long term market in that except panel cleaning.

  • Thorium (Score:3, Insightful)

    by Anonymous Coward on Wednesday August 01, 2012 @06:14PM (#40849125)

    We could just design and build thorium reactors for a lower cost.

    They are safe.

    They do not take up valuable farm space or displace native creatures and plant life.

  • Scenery (Score:3, Insightful)

    by verifine ( 685231 ) on Wednesday August 01, 2012 @06:18PM (#40849169)
    I for one am looking forward to that day when I can see nothing but solar cells. Desert? Heck no, solar cells! Mountains? Nope, amorphous silicon as far as the eye can see.
  • 700,000 homes (Score:4, Insightful)

    by Anonymous Coward on Wednesday August 01, 2012 @06:18PM (#40849173)
    Not that I think solar's a bad idea, but there's an assertion made in this (stated as if it were a fact) that a gigawatt of electricity is enough to power 700,000 homes which I think may not bear scrutiny.

    First, you need more peak energy production with solar than with fossil fuels or nuclear, because you also have to be storing up energy for dark hours/cloudy days.

    Second, that sounds like it's estimating some pretty low consumption per household, which probably isn't realistic. Electric consumption per household is on the increase, and I'd expect this to continue. More so if there's a move toward electric/hybrid vehicles recharged at night.
  • by Razgorov Prikazka ( 1699498 ) on Wednesday August 01, 2012 @06:21PM (#40849221)
    <quote><p> In a capitalist society, abundance is not a feature.</p></quote>

    True, its actually a bug!
  • by X0563511 ( 793323 ) on Wednesday August 01, 2012 @06:22PM (#40849235) Homepage Journal

    So, it's a fancy battery (just storing thermal energy until conversion to electricity, instead of storing the electricity).

  • Re:duh (Score:5, Insightful)

    by Fished ( 574624 ) <amphigory@gma[ ]com ['il.' in gap]> on Wednesday August 01, 2012 @06:22PM (#40849239)

    Seriously, building such things is not a "cost" but an investment. Just allocate the whole cost of the past several Middle-Eastern wars to your power bill and see how it goes for ya.

  • Cost is important! (Score:5, Insightful)

    by xzvf ( 924443 ) on Wednesday August 01, 2012 @06:35PM (#40849373)
    I've looked at putting solar panels on my house, and it will cost $30K after tax breaks and credits. The life span of a solar panel is 15-20 years with a denigration of efficiency of about 25% over that period. Then they will have to be replaced again. The payback period is roughly 10-12 years, so I'd come out ahead, but I have to make a significant capital purchase and live in the house for over a decade. What happens if I get a new job that requires me to move next year? The $30K investment in the house doesn't raise it's value that amount. For this to work, the payback period will have to drop to 5-6 years, and solar panels will have to be considered a viable option. Geo-thermal heat pumps, vertical wind turbines, efficient appliances, zone cooling and heating, tankless water heaters and (to channel Jimmy Carter) sweaters have more reasonable payback.
  • by Anonymous Coward on Wednesday August 01, 2012 @06:42PM (#40849443)

    The nuclear plant outside Phoenix produces over 3.3 GW. Stating that a nuclear plant "might produce" 1 GW to make your photovoltaic inefficiency sound better is disingenuous at best. Also, last time I checked urban rooftops are already cluttered with equipment, not just sitting there waiting for someone to exploit that real estate, and rural areas are often full of food producing, recreation having, wildlife harboring land. Why you'd want to cover that with vast arrays of shiny glass and metal I can't say. Just remember, all those arrays need plenty of grease, and petroleum products to keep them operational. They'll still result in plenty of pollution of their immediate footprint, which is enormous.

  • by ceoyoyo ( 59147 ) on Wednesday August 01, 2012 @06:43PM (#40849453)

    No, it doesn't. So long as the solar panels pay for themselves, they're viable. It may not be viable for an individual to put them on his roof (mostly because they are undervalued in the market, if what you say is true) but that has nothing to do with whether you can go and build solar power plants to replace coal, nuclear, gas and oil.

    Just because one specific type of solar installation might not be perfect (for you) doesn't mean solar itself won't work.

  • by Charcharodon ( 611187 ) on Wednesday August 01, 2012 @07:14PM (#40849871)
    Well it was getting cheap. I've been watching the prices on wholesalesolar.com drop about $5 a month on 235 watt panels.....right up until Congress passed a tarrif on Chinese made panels now it's going right back up.

    Can't have all those political allies solar companies going tits up after they poor tens of billions of dollars into them.

  • by Darkness404 ( 1287218 ) on Wednesday August 01, 2012 @07:31PM (#40850037)
    The fact that something needs to be subsidized shows that it makes no economic sense. You can steal your way to a profit, but that doesn't mean you're a good businessman.
  • Sorry but I disagee. Subsidies make sense when you're trying to jumpstart something like this that will have an overall benefit to the country. Spiking demand for panels to get production numbers up, getting a support system of installers built, and lowering the demand on local power production are all good reasons to want subsidies IMO. If I could get panels on my roof without having to get a second mortgage - on a home that is already upside down - then I'd do it and lower my demand on the grid. But I can't, costs are way over the top, so in my area where there appears to be almost no subsidies or other incentives this industry stagnates. I've got a terrific location for panels but no way will I spend the coin it would currently require...

  • by buybuydandavis ( 644487 ) on Thursday August 02, 2012 @04:37AM (#40853391)

    People in Australia got retardedly-high feed-in rates (ie. every kWh they feed into the grid provides a power bill rebate of ~50c compared to every kWH they pull out of the grid costing them ~15c) ...

    Hmm. Why bother with solar panels at all? Seems like there should be a way to make money when you can buy at 15c and sell at 50c. How do they know where you're getting the energy that you're selling?

I have hardly ever known a mathematician who was capable of reasoning. -- Plato

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