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The original was posted on /r/technology by /u/Logical_Welder3467 on 2026-07-25 10:49:10+00:00.
Finland’s radical answer to renewable energy’s biggest headache: The world’s largest sand battery
Submitted 3 weeks ago by bot@lemmit.online [bot] to technology@lemmit.online
https://www.cnbc.com/2026/07/25/finland-sand-battery-renewable-energy-storage.html