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schwangeronis t1_j0mhf9i wrote

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

The main reason these batteries are attractive is that they only pump when there’s excess power in the system, which is a hurdle for wind and solar power. So if the sun isn’t shining and the wind isn’t blowing the battery is discharging water.

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The_Ombudsman t1_j0mxhxq wrote

That's all well and good, and was covered in the article.

Doesn't really answer my question though.

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schwangeronis t1_j0n87ig wrote

Oh right, there’s loss in the system. I can’t answer how it compares to a conventional battery, but I can say it’s cheaper

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