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Sat, Jul 25 11:23 AM

💻 Technology

Finland's answer to renewable energy's headache: largest sand battery

Hacker News•Sat, Jul 25, 2026, 10:20 AM•2 min read

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Source: [Hacker News](https://www.cnbc.com/2026/07/25/finland-sand-battery-renewable-energy-storage.html)

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