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View Diary: This Week in Renewable Energy News: Low Cost Thermal Storage (47 comments)

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  •  Do you mean $0.78/KWH as stated, or /KW capacity? (1+ / 0-)
    Recommended by:
    jamess

    $0.78/KWh looks uncompetitively expensive.

    The linked article says KWh, but the present cost of delivered electricity
    is on the order of $0.1/KWh, ($100/MWh) according to Wikipedia.

    There's no such thing as a free market!

    by Albanius on Sat Nov 17, 2012 at 08:47:55 PM PST

    •  As Bill McKibben says, Do the Math! -nt (1+ / 0-)
      Recommended by:
      jamess

      There's no such thing as a free market!

      by Albanius on Sat Nov 17, 2012 at 08:48:42 PM PST

      [ Parent ]

    •  It the unit per storage cost. (0+ / 0-)

      compared to Lithium Batteries,

      it's a downright bargain.


      Isn't it time to fix the Filibuster?
      -- Here's how.

      by jamess on Sat Nov 17, 2012 at 09:54:16 PM PST

      [ Parent ]

      •  But the cost of extracting energy (2+ / 0-)
        Recommended by:
        jamess, Odysseus

        in a usable form seems to neglect the need for something like a steam turbine or solid state thermoelectric devices to get the energy back.  While it makes sense for a system that already uses heat, from a thermal solar facility to household heating and hot water system, comparing to Li batteries on cost is pretty unfair, when they are optimized for weight and charge/discharge characteristics.  It seems like iron-air batteries, already making commercial inroads for storing energy generated as electricity, would be the one to beat. It seems inherently inefficient to convert electricity into heat then try to extract it again.

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