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MIT scientists propose power storage using cement blocks
(www.datacenterdynamics.com)
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this post was submitted on 04 Aug 2023
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I thought this was going to be the thing where they use cheap power to raise big weights and then generate power from gravity lowering them.
In general those are a bad idea. A lot of complexity for not much power storage.
Presurized caverns or pumped storage are much better version of that idea.