As fossil-fuel-derived energy systems facilitate the degradation of the planet, researchers have been innovating alternative and sustainable solutions—including the world’s first sand battery from Finnish startup Polar Night Energy. Currently operating in Finland’s Kankaanpää district, the battery relies on a large steel tank full of regular, dry sand with a heat exchanger buried in the middle. When the sand is heated, the tank can store …
The World’s First Sand Battery Debuts in Finland
