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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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This doesn't make any sense. EGS is already a thing, and this doesn't exactly sound cheaper. The benefit you get from EGS is constant output instead of going through all this trouble to recreate a battery.
I'll also note there's no confirmation that this is a closed loop, meaning this could draw a lot of water in a region beset by ongoing drought.