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A comment on Giant 'sand battery' holds a week's heat for a whole town. Parent comment

Re:Giant 'sand battery' holds a week's heat for a whole town by omegabravo on Thursday March 14, 2024 @06:46AM (#39702255)
You would need a pressure vessel and corrosion resistance, and potentially a pump driving up the cost.

solar panel with sand is mechanically and electrically much simpler

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