• 9point6@lemmy.world
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    2 days ago

    We actually have a growing amount of gravity battery capacity in the UK, currently a drop in the ocean around 15GWh, but I believe 200% of that is currently in construction.

    IIRC the same article I read about this suggested we could make use of all the old coal mines, retrofit them to become gravity batteries relatively cheaply and gain magnitudes more capacity than we have today.

    • Bytemeister@lemmy.world
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      2 days ago

      Oooh. Very interested in this. I was thinking about trying to build my own gravity battery, but my back of the napkin calculations for the mass and height are nutty. I don’t think a small scale home-size device would be viable…