• amelore@slrpnk.net
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      7 months ago

      Yes, suspended weights, also spinning flywheels, hot salt, hot sand
      There’s options besides pumped hydro, hydrogen and batteries

    • jol@discuss.tchncs.de
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      7 months ago

      It’s slithly better the more dense the material, but that’s basically the same thing. You could say that depending on the location, using water is much more practical.

      A much more interesting one I saw was the molten salt ones, where basically you store the energy as heat in a sealed place, and then when you need it, you use that heat to run turbines.