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A comment on A sand battery could transform clean energy. Parent comment

Re:A sand battery could transform clean energy by automatic6131 on Friday November 04, 2022 @11:10AM (#33468013)
But missing the crucial second half, releases electricity on discharge.
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Re:A sand battery could transform clean energy by tomrod on Friday November 04, 2022 @11:14AM (#33468101)
It's not a chemical battery, which releases energy as electricity, but electricity can certainly be generated using heat stored in heated/molten sand.

Ultimately its about energy transfer, efficiency, and storage.

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Re:A sand battery could transform clean energy by tuatoru on Friday November 04, 2022 @03:04PM (#33472043)
It's an accumulator for a district heating system, which are apparently common in Nordic countries.

Traditionally district heating systems use waste heat from thermal generation of electricity, which heat is free.

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