World’s biggest sand battery to heat Finnish town without fossil fuels
Wednesday, 11 June 2025 () 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 so-called sand battery in the municipality of Pornainen, an hour north of Helsinki. The machine, which uses dirt to store excess renewable energy as heat, will warm the homes and businesses in the town of 5,000 people. It is expected to replace natural gas and oil in Pornainen’s district heating network entirely, slashing emissions by an estimated 70%. “This project is a powerful example…
International sand masters transform Danish coastline
A troupe of world-class sand sculptors has descended on Hundested, Denmark, as the town prepares to open its 14th annual sand sculpture festival..
Credit: euronews (in English) Duration: 01:00Published
Wednesday, 11 June 2025 ()
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 so-called sand battery in the municipality of Pornainen, an hour north of Helsinki. The machine, which uses dirt to store excess renewable energy as heat, will warm the homes and businesses in the town of 5,000 people. It is expected to replace natural gas and oil in Pornainen’s district heating network entirely, slashing emissions by an estimated 70%. “This project is a powerful example…![International sand masters transform Danish coastline [Video]](https://video.newsserve.net/300/v/20250519/1411220388-International-sand-masters-transform-Danish-coastline.jpg)
