The Federation of Tampere Evangelical Lutheran Parishes wants to pump excess heat from its Valtiala furnace into the local central heating system to heat homes in the town as well as in nearby Kangasala.
If the parish union and Kangasalan Lämpö reach an agreement, the crematorium’s excess heat could be warming homes in the area by next winter.
super common in Sweden.
there are central heating plants that supply heat for whole communities.
https://en.m.wikipedia.org/wiki/District_heating
These seem to be everywhere in Finland too.