RECORD-BREAKING BATTERY WITH A SECRET SUPERPOWER – SAND

Polar Night Energy has built an industrial-scale sand battery in Pornainen for Loviisan Lämpö’ s district heating network. The battery delivers 1 MW of thermal power and a storage capacity of 100 MWh.“ The Sand Battery means a lot to Loviisan Lämpö. It allows us to drastically reduce our emissions and improve the reliability of heat production,” says Mikko Paajanen, CEO of Loviisan Lämpö. The Sand Battery is expected to reduce annual CO₂-equivalent emissions from the local heating network by around 160 tons, cutting climate emissions in Pornainen’ s district heating by nearly 70 %.

16 November 2025