Reduce temperature, solar panels, which use air as a medium for heat from the solar panels. The use of convection with air. The study of the mass flow rate of air through the cooling fins, which resulted in increasing the efficiency of solar panels. Which is aimed at the mass flow rate of air through the cooling fins, which have resulted in increased efficiency of solar panels. Compare and find the optimal flow rate for increased efficiency solar panels, which are 3 types of single-crystal thin-film and crystalline compound. The fan draws air into the air shaft, which is designed for a flow of air to the right and use air as a medium to flow through the aluminum fins underneath the solar panels.