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A comment on Gravity Energy Storage: Alternative to batteries for grid storage. Parent comment

Re:Gravity Energy Storage: Alternative to batteries for grid... by jandrese on Tuesday January 05, 2021 @04:28PM (#25651355)
Usually when you see compressed air storage solutions they're talking about plugging up an old mineshaft or cave and pumping air in.

Doing it under water would seem to have some advantages, like a less catastrophic failure condition and having a ready place to sink all of the heat. Downside is that the water would cool the air much more effectively than solid rock so you lose efficiency.

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Re:Gravity Energy Storage: Alternative to batteries for grid... by jayd16 on Tuesday January 05, 2021 @04:41PM (#25651529)
Are there any combination solar, hydro, fracking/oil plants? I'm joking but not entirely. Not sure how much water would fit in an oil field but it seems like a natural reservoir one could use.
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Re:Gravity Energy Storage: Alternative to batteries for grid... by jandrese on Tuesday January 05, 2021 @04:51PM (#25651647)
The trick would probably be getting your energy back after you've pumped the old oilfield full of water. Most oil fields aren't gushers, especially after they've had most of the oil sucked out of them.
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