this post was submitted on 28 Jul 2026
67 points (100.0% liked)

Futurology

4328 readers
132 users here now

founded 3 years ago
MODERATORS
voidx@futurology.today
Lugh@futurology.today
Espiritdescali@futurology.today
AwesomeLowlander@futurology.today
67
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
9 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] cogitase@lemmy.dbzer0.com 9 points 8 hours ago

that’s about 100x more than I was expecting.

That's the construction cost. If the cycle life is 1000, then you would get $0.025/kWh.