pv magazine
Summary
Finnish startup Polar Night Energy has announced its industrial-scale sand battery in Pornainen, southern Finland, is now operational following commissioning by district heating company Loviisan Lämpö.
The Pornainen sand battery delivers 1 MW of thermal power and offers a storage capacity of 100 MWh, making it 10 times larger than the world’s first commercial sand-based, high-temperature heat storage system launched in Kankaanpää in 2022 and the largest in the world to date.
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