Cover Image for Wash Your Solar Panels

Wash Your Solar Panels

I am lucky enought to live in southern California and I am also lucky enough to have solar panels on my roof. I had been meaning to clean them for a while and the “while” turned into 3-4 years. I finally got around to cleaning the solar panels a couple months back and the difference in the output before and after the cleaning was pretty noticeable.

Lesson being; if you have solar panels, don’t forget to clean them occasionally.

Take a look at the image below. You can clearly see the trendline for the daily output going down as the days become shorter and shorter in October. On the day that I cleaned the panels, October 22nd, there is a big jump in output and then the same trendline continues only at a higher total output.

Power output graph