Reduce the temperature of solar panels using the air as intermediaries in bringing the heat from the solar panels. The use of convection with air. The effect of the mass flow rate of air through the cooling fins on the optimization of solar panels. The purpose is to study the effects of the mass flow of air to the optimization of solar panels. And comparing the flow rate to optimize photovoltaic three types of single crystal and polycrystalline thin-film alloys. By installing an exhaust fan with air vents designed to force the flow of air to the right and use as an air flow through the aluminum fins of the solar panels.