Selected communes and their residents appreciate the benefits arising from the use of renewable energy sources. They are aware of the benefits of mounting solar collectors. Analyzed communes received EU support to enable the implementation of projects using solar energy. It should be emphasized that the installation of these devices is a very costly investment, so in both cases the union’s support was a very important to the project. EU financial assistance was one of the key factors enabling the installation of solar systems. The study shows that the most important indicator for the residents of imaging performance solar collectors or the coverage of demand for hot water, was almost 50%, which is a very good result. Reduce emissions of air pollutants in the Biłgoraj community reduced to about 1560 tons per year and in communities of the eastern Mazovia to 1357 tons per year.