Finnish startup Polar Night Energy and Loviisan Lämpö, a district heating company in Finland, plan to construct an industrial-scale thermal energy sand-based storage system in the municipality of ...

A scientific group has proposed adding thermal solar panels to air-source heat pumps while also using grid heating to keep temperatures stable at night. The group modeled a system that could reportely ...

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 ...