The project will include the installation of installations based on renewable energy sources on 31 buildings, including photovoltaic cells and heat pumps in 8 communes from the Bialystok Functional Area. The facilities will be located on and in buildings or land owned by the municipality. The predominant (70-100 %) amount of energy produced in RES equipment will be used for its own needs. The effects of the project will include reducing the amount of energy consumed from conventional sources, reducing emissions to the air not only of greenhouse gases such as CO2, but also of co-associating pollutants, such as dusts, sulphur dioxide, nitrogen oxides, i.e. pollutants that directly and indirectly affect the health of BOF residents. The implementation of the project will improve the quality of the environment, in particular the air. These solutions will also contribute to the energy sustainability of BOF municipalities, including the supply of heat to public buildings, as well as to increase the energy efficiency of these buildings and thus reduce the cost-consuming maintenance of these buildings. RES installations will result in partial independence from conventional sources. Municipalities, thanks to lower expenditure on electricity or heat, will be able to use the saved funds to carry out other public tasks. In addition, investments based on renewable energy sources increase energy security and become independent of changing electricity prices. The implementation of the project will have a positive impact on the socio-economic development of BOF. The main objective of the project is to reduce air pollution by installing RES on public buildings in BOF. The target group consists of the inhabitants of the BOF area, in particular the inhabitants of: The towns of Bialystok, the municipality of Choroszcz, the commune of Czarna Białostocka, the municipality of Dobrzyniewo Big, the Communes of Juchnowiec Kościelny, the Communes of Łapy, the Municipality of Supraśl and the Municipality of Turośń Kościelna.