I think pumped storage is 70 to 80 efficient. I think the Helms Pumped Storage P... | Hacker News

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Gibbon1 on June 26, 2022 | parent | context | favorite | on: Enormous Swiss water battery to start operating ne...

I think pumped storage is 70 to 80 efficient.

I think the Helms Pumped Storage Plant is about 120 million kwh storage(guess).

https://en.wikipedia.org/wiki/Helms_Pumped_Storage_Plant

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