In cold places district heating solutions with seasonal storage, like this one, make a lot of sense: https://www.vantaanenergia.fi/en/about-us/projects/varanto

In cold places district heating solutions with seasonal storage, like this one, make a lot of sense: https://www.vantaanenergia.fi/en/about-us/projects/varanto-the-cavern-thermal-energy-storage/ https://www.vantaanenergia.fi/en/about-us/projects/varanto-t...