Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The new Polar Night Energy ...

To cut fossil-fuel use, a small town in Finland has adopted crushed soapstone, a sand-like material, as a heating medium.

Finland has inaugurated an industrial-scale sand battery this week in the southern town of Pornainen, where it'll take over heating duties from an old woodchip power plant for the municipality. It's ...

An innovative thermal energy storage system has redefined the way a small Finnish town heats its residential and commercial buildings, with an enormous silo of 2,000 tons of crushed stone capable of ...

A small town in Finland is about to ditch fossil fuels in its heating network thanks to a sand-filled energy storage tank the size of a house. Finnish startup Polar Night Energy recently turned on the ...

Polar Night Energy will deploy an industrial-scale thermal energy storage unit for Lahti Energia’s district heating network in Vääksy, Finland. The sand battery will provide 2 MW of thermal output and ...

A small town in Finland is experimenting with a new type of infrastructure: the world’s largest sand battery. The battery—a 42-foot-tall, nearly 50-foot-wide silo filled with 2,000 tons of crushed ...

A small municipality in southern Finland recently installed the world's largest "sand battery" to supply the town's heating. The new sand battery, designed by Polar Night Energy, is effectively a ...