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Honor Student
Posts: 11
Registered: ‎05-16-2014

Drop in solar panel energy production

I noticed that my energy production mysteriously dropped by 20% last month.

Does this mean I have to replace the entire system?
Teacher
Posts: 15
Registered: ‎05-16-2014

Re: Drop in solar panel energy production

Do you have a lot of shading or dirt covering the panels? That may be causing mismatch, bringing down your energy production, especially if you don’t have microinverters.
Honor Student
Posts: 11
Registered: ‎05-16-2014

Re: Drop in solar panel energy production

How much is “a lot? Here is a picture of what I'm dealing with:
clean me.png
Teacher
Posts: 15
Registered: ‎05-16-2014

Re: Drop in solar panel energy production

Oh, that is a lot....

Easy solution: Clean off the solar panels with water. A simple spray of water from a garden hose will do.