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A comment on New England's Largest Battery Is Hidden Inside a Mass. Mountain (2016). Parent comment

Re:New England's Largest Battery Is Hidden Inside a Mass. Mo... by jakzurr on Wednesday May 25, 2022 @11:25PM (#31514085)
Not Carnot, it's mechanical. https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricit...

It's not 100%, but it's not bad.

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Re:New England's Largest Battery Is Hidden Inside a Mass. Mo... by olau on Thursday May 26, 2022 @04:42AM (#31516092)
The comment you're replying to is discussing using heat for pressure, not electrical pumps.
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Re:New England's Largest Battery Is Hidden Inside a Mass. Mo... by jakzurr on Thursday May 26, 2022 @07:22AM (#31517041)
Ah, you're absolutely right, that was my mistake. hp48fan seems correct that it would make a minuscule difference.
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