The object of the project is the design, delivery and assembly of 124 photovoltaic microinstallations and 22 solar collectors installations in residential buildings. In residential buildings, there are 2 types of photovoltaic installations with a power of 2,24 kW and 3.20 kW and 3 types of solar collector sets. The main components of photovoltaic installations are: panels of 7 or 10 pieces respectively, inverter and control-measuring module. Each photovoltaic installation will operate on-grid, with the priority being to meet current electricity demand and surplus electricity to the grid. The solar system will consist of 2 to 4 collectors along with equipment, and its task will be to support the heating of the stream.