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World’s Largest Sand Battery is in FinlandPolar Night Energy has recently powered up the world's largest Sand Battery in Pornainen, Finland. Standing 13 metres tall and 15 metres wide, this modern marvel is packed with 2,000 tonnes of crushed soapstone sand, a by-product of the local fireplace manufacturing industry.The Sand Battery is a thermal energy storage (TES) system. Excess energy from…Load more