this post was submitted on 28 Jul 2026
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Finland builds the world's largest sand battery. Site can cheaply store energy for entire month. No "rare earths" or critical materials used. Estimated at $25/KWh (www.cnbc.com)
submitted 10 hours ago by Lugh@futurology.today to c/futurology@futurology.today
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[–] phdepressed@sh.itjust.works 4 points 9 hours ago (1 children)

Probably that not just any sand will do. Similar with building concrete/cement the sand used is important, even desert countries often have it shipped in because desert sand isnt the right type.

[–] Keilik@lemmy.world 2 points 9 hours ago

Psssh I know some contractors in Florida that could build these sand batteries for 1/10th the cost. Probably with performance correlating with price too, that’s a bargain