But then why put it in the house and not e.g. in the ground? | Hacker News

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		AnthonyMouse on March 14, 2024 \| parent \| context \| favorite \| on: Giant 'sand battery' holds a week's heat for a who... But then why put it in the house and not e.g. in the ground?

mkesper on March 14, 2024 [–]

1. Not possible everywhere 2. Probably more expensive

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