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A comment on Why Is Hydroelectricity So Green, and yet Unfashionable?. Parent comment

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by seanmcdirmid on Friday October 28, 2022 @12:35AM (#33367721)
Pumped storage can also be used with existing hydro stations, just have a reservoir at the bottom to save water that can be pumped back up to the top of the dam. See https://www.nwcouncil.org/sites/default/files/MarkJones_1.pd... for the one at grand coulee.
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Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by pencilguin on Friday October 28, 2022 @01:39AM (#33368064)
California has dozens of hydro power reservoirs high up in its Sierra Nevada range, many built a century ago, with penstocks down to power stations far below. The penstocks have lately been fitted with pumps to push water back up.
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