Take your hose and gently spray down your panels. Spraying the panels will help to remove the top layer of dirt, loosen up the other layers, and cool your panels if you need to place your hands on them during the cleaning. While you are spraying, note any stubborn pieces of debris or dirt that don’t seem to be moved by the water.
The experts at Solar Panel Cleaning Ltd explain that if you don't regularly clean your solar panels dust can accumulate and even just one dusty cell can affect the performance of the entire panel.
Mistake: Cleaning solar panels during the peak heat of the day can cause the water and cleaning solution to evaporate quickly. This not only leaves streaks and residues on the panels but can also increase the risk of thermal shock, where a rapid temperature change can damage the glass.
When cleaning solar panels, you should consider doing so while staying on the ground as it is much safer. You can use a hosepipe equipped with a suitable nozzle to accurately direct water onto the panels without having to climb up on the roof. However, cleaning solar panels from the ground might not be a possibility for you.
Alternatively, some window cleaners offer solar panel cleaning services. While they may not be able to identify any issues with the solar panels where a specialist could, it is an option for a routine clean after bad weather, rather than as technical maintenance. How often should solar panels be cleaned?
Any leftover water or soap stains can be prevented by air dying the panels. When cleaning solar panels, you should consider doing so while staying on the ground as it is much safer. You can use a hosepipe equipped with a suitable nozzle to accurately direct water onto the panels without having to climb up on the roof.