Although a solar system is relatively low maintenance, it is in your best interest to clean your panels from natural grime and debris to allow maximum absorption of sunlight and optimal generation of electricity. The surface of your panels is smooth, like a window, and you can clean them the same way and with the same care as you would your windows.

It is just important to consider the type of cleaning solution used, as the runoff from your panels will spill onto your roof and end up in your gutters. If your gutters lead to tanks utilised for household consumption or watering your vegetable garden, it is important to use a non-toxic, biodegradable, safe-for-human-consumption washing aid.

Rinse with Low Pressure
Usually, a quick rinse (especially during drier seasons when there is less rain to do this job naturally) is all you’ll need to deal with the layer of dust. Use a garden hose or low-pressure washer to rinse your panels. High pressure can scratch and damage the panel surface.

Wash with Soapy Water
For a more thorough clean (especially if your panels are exposed to tree sap or tougher grime), use a mild, safe soap to clean the panels by hand, Use a gentle mop or scrubber, and perform a wash as you would on your windows or car.

Check & Service
While you are up there, use the opportunity to check all fittings, connectors, and wiring.