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759

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[–] 3 pts

Also a closed form of hydro where they pump water uphill into a pond, then let it fall back down to harvest the power.

[–] 1 pt

I e always wondered why this isn't done. Likely because it makes too much sense.

[–] 0 pt

It's done just requires unique land formation

[–] 0 pt

Literally any dam.

Edit: *Hydro-electric dam

[–] 0 pt

I assume efficiency loss, and the space to build it.

[–] 0 pt (edited )

Batteries are not efficient at all. Minimal losses but the actual infrastructure is total shit as far as a solution goes. Higher losses with using a water/gravity battery. But it works and has extremely high unfaltering yields. Use "green" energy to power the pumps and gravity/natural rainfall for everything else.

Edit: plus you get drinking water reservoirs and recreational areas. It's a win, win, win, win.