Today’s technologies allow that local biomass, which exits in sufficient quantities, can be converted into heat energy. In particular, this includes the use of the untreated residual wood from forest cultivation and the timber industry. This heat energy is distributed in the form of hot water by using the district heating network to individual public and private consumers. The burning of renewable biomass is, in contrast to fossil fuels such as mineral oil, coal and natural gas, climate-neutral and thereby contributes to the reduction of CO2 emissions into the atmosphere.