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A sand battery in Finland is transforming sustainable heating

From housing to businesses and a municipal swimming pool, this battery is slowly changing the game for Finland's district heating.

The battery is a high-energy storage facility located in Kankaanpää and is fed power from the grid whenever excess electricity is available. Sand is the second most exploited natural resource after water and its emissions-heavy mining is highly damaging to local ecosystems. Scaling up, a similar sand battery will be installed in the city of Pornaien in a recent agreement between Polar Night Energy and district heating company Loviisan Lämpö.

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