Heating plants in Serbia use mainly fossil fuels. The share of natural gas in DH increased to 77%, while the remaining shares consisted of heavy oil with 13%, and coal with 10%. Wood accounts for a negligible 0.00062%. The Energy Development Strategy plans to expand existing district heating systems, with a reduction in the use of petroleum products and coal, and an increase in the use of biomass and natural gas, by 2030. Preconditions have been created for the development of the thermal energy market, defining the energy activities of production, distribution and supply of heat.