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A comment on Construction begins on world’s biggest liquid air battery. Parent comment

Re:Construction begins on world’s biggest liquid air battery by newyankee on Wednesday June 24, 2020 @03:55AM (#23625304)
Are they efficient ?
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Re:Construction begins on world’s biggest liquid air battery by ashtonkem on Wednesday June 24, 2020 @11:51AM (#23629375)
Pumped hydro hits about 80% efficiency. So if you’ve got the right geography for it, it’s one of the best choices available.
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