It requires less surface area, both due to compressibility and due to hydrodynam... | Hacker News

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		tristor on Jan 12, 2022 \| parent \| context \| favorite \| on: Goldman Sachs invests $250M in compressed air ener... It requires less surface area, both due to compressibility and due to hydrodynamics. Additionally, water is a strong erosion source, air is not, so this can make use of existing excavations much easier and deep excavation is very very expensive.

Murkin on Jan 13, 2022 [–]

But they already fill the underground containers with water when there is low air pressure. (thats what the reservoir on top is, no?)

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