Polar Night Energy, a startup in Finland, has developed a sand battery that can store heat for many months and ensure the supply of green energy throughout the year.
August 16, 2022
Polar Night Energy, a startup in Finland, has developed a sand battery that can store heat for many months and ensure the supply of green energy throughout the year. This device, which has been installed at the Vatajankoski Power Plant in Finland, uses a silo with thick walls that is