Due to the lack of moving parts, there aren’t many fees connected with solar panel maintenance once you’ve covered the installation charges. You can simply wash the face of the panels with a regular garden hose for a general cleaning. This is best done in the morning or evening. Also, do not shower the solar panels with cold water while they are still hot, since this may cause harm. Furthermore, if the panels require further cleaning beyond what the hose can give, you may scrub them with a sponge and soapy water.