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View Diary: NREL Study: Solar Power could provide 100 Times the Amount of Current U.S. Electricity Needs! (251 comments)

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  •  The estimate of the costs given by RWI was (8+ / 0-)

    based on old feed-in-tariff rates and it completely underestimated the lifespan of solar power plants and modules, ie. it does not factor in at all that solar power plants will be producing the cheapest electricity around after the 20 year f.i.t. rate expires.

    Solar power already is much cheaper than you think.

    In fact, the cost of electricity from solar pv ground installations in the MW range in Germany already is cheaper than electricity from new nuclear.

     

    "A candle loses nothing by lighting another candle" - Mohammed Nabbous, R.I.P.

    by Lawrence on Tue Jul 31, 2012 at 09:15:52 AM PDT

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    •  And also underestmiated is the (1+ / 0-)
      Recommended by:
      Deward Hastings

      increasing lifespans of nuclear. all nuclear plants built now and that have come on line in the last 10 years have 60 year life spans.

      Solar only hit's midday peak or 'noon', which is, in the US, is not peak load. Peak load is on the downward slide of solar, from 1500 to 1900 hours. In fact, if you look at at the CALISO site you'll see it's in the last afternoon when the rated 'capacity' of solar is about 1/4 of what it needs to be. Of course this is seasonally adjusted.

      Solar PV cannot run an industrial 24/7 society. Even those whacky Germans understand that (which is why the biggest industry supporting solar is not the solar industry...but the natural gas industry).

      If you build out a CSP site...I notice NO ONE on this list has stated the cost for this...turning this into a "24 hour" operation would require dividing the 5 or so hours of peak production by 4/5ths to get your "24 hour" generation. Thus a CSP site that can output say, 1000MWs for 4 or 5 hours if tied to a molten salt storage (costs please?) divided evenly around that 24 hour cycle, would out put about only 200MWs, if they are lucky. Maybe more in the summer and less in the winter.

      David

      Dr. Isaac Asimov: "The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny ...'"

      by davidwalters on Tue Jul 31, 2012 at 09:41:51 AM PDT

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      •  Sorry, should of privided a link to the CALISO (0+ / 0-)

        forcast chart:
        http://www.dailykos.com/...

        Today's peak, at a whopping 39000+ MWs is at 1700 hours (that's 5pm for non-industry types). Do you think our mythical 1000MW CSP plant is outputing "1000MWs" then? I don't think so. The vast array of new gas turbines, however, will be balls-to-the-wall at full load. Buy gas stocks now if you want to make some money.

        David

        Dr. Isaac Asimov: "The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny ...'"

        by davidwalters on Tue Jul 31, 2012 at 09:45:38 AM PDT

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