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This startup wants to use the Earth as a massive battery
(www.technologyreview.com)
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this post was submitted on 09 Aug 2025
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True! I just wonder how much energy they'd realistically be able to store for a given amount of resources. Like, does this have the same issues as Lifted Weight Storage? Where the energy density just doesn't really make sense once you get right down to it. I don't know the relevant math to determine how much water and at what pressures might be required to scale this up to the 500MWh/1GWh range. It might be perfectly fine.
EDIT: fuck man I'm not writing well today. edited to make me sound like less of a cretin