The Sand Battery will be approximately 13 meters high and 15 meters wide
Image: Polar night energy
By ESS news
Finnish startup Polar Night Energy has announced that construction of its sand-based thermal energy storage system in Pornainen municipality in southern Finland is proceeding according to plan. The 1 MW system will provide thermal energy for Loviisan Lämpö’s district heating network.
Once operational, it will be able to store up to 100 MWh of thermal energy – a capacity equivalent to almost a month of heating demand in summer and a week of demand in Pornainen in winter. Polar Night Energy said its sand battery acts as a powerful, high-capacity reservoir for excess wind and solar energy, storing energy in sand as heat.
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