lens17@feddit.detoSolarpunk@slrpnk.net•Gravitricity: Storing energy using gravitational potential
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6 months ago“Underground” is mentioned in the text above. I know that some people are considering to store heavy blocks connected to ropes in the shafts (?) of old coal mines that go down hundreds of meter. Use a single, very heavy block and you’re good to go. Though I don’t think that it holds a significant amount of energy (too lazy to calculate and no feeling for the possible dimensions of such a block). Also, digging new shafts should be prohibitively expensive for energy storage.
Have you heard of “Themes”?