Polar Night Energy, which in 2022 implemented the world’s first commercial sand-based, high-temperature heat storage system ...

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 ...

Engineers create a sand battery that they say will slash the carbon emissions in Pornainen, Finland, by 70% — it uses renewables to heat the sand to almost 850 degrees Fahrenheit. When you purchase ...

Hackaday.io user [mabe42] works during the week away from their home city and rents a small apartment locally to make this life practical. However, the heating system, a night-storage system, is not ...