How often should solar panels be cleaned?
A contentious question that is hard to answer. In general, the cleaner you keep your panels the more yield you will receive from the solar panels, the cleaner the surface and less dirt and or dust or debris on the panel the greater power that the panel is able to produce. Panels are within reason self-cleaning, If a panel has a relative pitch then the general weather conditions will offer a reasonable amount of cleaning, it won’t clean the backed on or hard to remove dirt and pollen but will clean most basic dust on a regular basis when it rains. Most installers and or companies suggest that every year or every second year is a good timeframe to get your panels cleaned. The only thing to note is that it costs money most of the time to get your panels cleaned and you need to make sure that the cost of the cleaning doesn’t out way the benefit of cleaning the panels.