The state policy on energy efficiency and renewable energy sources is under implementation. As stated in the Energy Sector Development Programme until 2030, the development of centralized heating systems on the basis of cogeneration plants where it is economically feasible is one of the main directions of heating systems development. According to the Energy Sector Development Programme until 2030 it is envisaged to reduce the electricity production from coal to 60 per cent, compared to 70 per cent in 2006.