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bstix@feddit.dk ⁨1⁩ ⁨week⁩ ago

The sand storage is used for district heating. It’s not much of a substitute for single homes that have electrical heating or are off-grid.

It’s a great way to balance the both the electrical and the heating grids so that more electricity from renewables can be used to offset other means of heat production, but it needs to be done by the district heating supplier. I doubt it makes sense for individual houses.

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