I have been cleaning solar panels for years now and what I have found is that there is more to it than appears at first glimpse. Beginning Solar Panel Cleaning When I first started, I looked at solar panels as essentially a one-sided window. I cleaned them with a strip washer, squeegee and extension pole. This method produced an acceptable result but failed to provide adequate rinsing. It also tended to pack dirt into the solar panel frames. When I dug deeper into the best method for cleaning solar panels, I read how deionized water [...]