- Solar Panel Cleaning
$12/panel with a $149 minimum. We use a biodegradable soap formulated just for solar panels. Keeping your solar panels clean will maximize the photovoltaic potential. It is normal to increase the solar intake by 10% to 50% when they are clean over being dirty. Solar panels are meant to be dark and they absorb the light the best this way. Dust and grime can be lighter in color, reflective, and also filter out the Sun rays.