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Hacksaw@lemmy.ca ⁨2⁩ ⁨weeks⁩ ago

The energy math doesn’t make sense for grid scale applications with solid objects.

youtu.be/iGGOjD_OtAM

However if you can get water between two places it can work quite well. You need to live close to a big change in altitude and do a bit of geoengineering to create the upper and lower reservoirs, which can be destructive to local ecology, but not as much as a dam.

…wikipedia.org/…/Pumped-storage_hydroelectricity

You can also use pumped air underwater with higher energy losses than pumped storage hydro because of compatibility of air.

electricalindustry.ca/…/1785-world-s-first-utilit…

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