pbjamm t1_j0lq8vn wrote on December 17, 2022 at 4:56 PM

Reply to comment by bull1226 in Switzerland’s Giant “Water Battery” Starts Working by Wagamaga

There is a series of lakes in California (the Edison Lakes) built by the power utility over a century ago. No pumped hydro as far as I know but a series of man made lakes that each generate power as the water works it's way down the mountain.

beebeereebozo t1_j0lss2c wrote on December 17, 2022 at 5:13 PM

The Helms Project in that area is pumped storage using Courtright and Wishon lakes. Has been operating since 1984. https://en.wikipedia.org/wiki/Helms_Pumped_Storage_Plant