Around 50% of heat installations can be optimised

Source: HOFOR
Link: https://www.hofor.dk/baeredygtige-byer/udviklingsprojekter/smartere-fjernvarme/

25% of all district heating installations are faulty

Source: HOFOR
Link: https://www.hofor.dk/baeredygtige-byer/udviklingsprojekter/smartere-fjernvarme/