Dusting and moss on the solar panels can cause low productivity of the solar system, Therefore, in order to maintain high productivity of electricity generation, the most important maintenance of the solar system is cleaning the solar panels or, other works, such as checking up the connection, and other control systems. General Recommendations in preventive maintenance of solar systems, solar panels should be cleaned at least every three to six months. However, depending on location and dust levels in the environment, the need for cleaning may increase more frequently.