How to clean your solar panels on the roof??
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House wash....uses a garden hose toget a detergent to clean the siding and you ca switch to clear water for a rinse. Shouldn’t harm the panels.
We hose them off intermittently. Before doing anything, read your lease or purchase agreement and follow their recommendations in order not to void your contract or warranty.
If you are good to go, here are some suggestions:
https://evergreensolar.com/how/cleaning/
https://www.energymatters.com.au/panels-modules/cleaning-solar-panels/
And then there are those that say no . . .
https://cleantechnica.com/2013/04/12/how-to-maintain-and-clean-rooftop-solar-dont/
result for clean solar panels on roof
Avoid using detergents if possible as these may streak the glass of the panel. Use of abrasive powders also risks scratching the panels. Given the nature of good quality solar panel glass, clean water and a little scrubbing with a coarse cloth covered sponge or soft brush should remove the most stubborn grime.
https://www.youtube.com/watch?v=r1W3lHpNszg
Don't worry too much about them. If you clean them, in a day or so they are dirty again. The net loss of solar energy is only about 1% which is not enough to make more than a few cents difference in your power bill.
Don't know what your panels are made of.... but lots of videos on YouTube... https://www.youtube.com/results?search_query=how+to+clean+solar+panels+on+the+roof
The solar panels should come with a set of instructions on how to care for them, if anything at all. They are pretty much unreachable if they are on your roof.