89
Giant 'sand battery' holds a week's heat for a whole town
(newatlas.com)
A community for high quality news and discussion around technological advancements and changes
Things that fit:
Things that don't fit
They didn't say, but I'm wondering what the loss is when you convert the heat back into electricity. I assume they're boiling water and turning turbines with it- I can't imagine they're losing too much.
They're using heat exchangers to add it to the municipal heating loop. No electricity involved on that side.
I saw that, but they said it could be converted to heat with a loss.