Skip to main content

View Diary: Solar Photovoltaic Generating Capacity Averaging 65% Compound Annual Growth Rate for Last 5 Years (161 comments)

Comment Preferences

  •  no no no separate batteries. (2+ / 0-)
    Recommended by:
    Norm in Chicago, Wee Mama

    The last thing you want are batteries in every device.  

    Refrigerators and anything with a heating element e.g. toasters, coffee pots, etc., are wholly impractical to build with internal batteries.  And internal batteries will mean a constant hassle of replacing a score of nonstandard battery types.

    Better: "house batteries," sufficient battery capacity to store a whole house's power usage for e.g. 48 hours (not only overnight but cloudy days).  

    Best of all: no batteries in the houses.  Batteries ultimately wear out and have to be disposed of or recycled in some way, and replaced: a very large expense and (depending on battery type) a hazardous waste disposal problem.   So instead of batteries, use molten salt (thermal) storage or gravitational (kinetic) storage on the grid.

    •  What about a largish fuel cell in the basement or (2+ / 0-)
      Recommended by:
      Wee Mama, G2geek

      an even larger one per neighborhood, to replace the batteries?

      We spend money we don't have on things we don't need to create impressions that won't last on people we don't care about. Tim Jackson

      by Athenian on Wed Jul 06, 2011 at 07:01:34 AM PDT

      [ Parent ]

      •  yeah that could be done. (1+ / 0-)
        Recommended by:
        Athenian

        Fuel cells in local substations for example.  Fuel cells in the house are doable where there's enough space.  In cities there's not enough space in individual units & houses, but there are more substations or other utility-owned locations for them.  

        Fuel cells could offset some of the intermittency of solar by converting water back and forth as needed, though at present that's expensive compared to some other options.  

Subscribe or Donate to support Daily Kos.

Click here for the mobile view of the site