Dirty Panels Patterns

Look at the above graph and see if you see what I see. On Sept. 1, the panels looked dirty so I washed them on Sept. 2. See the kilowatts produced went up 2 units? Now on Sept. 22, I saw the panels were dirty and so the units produced seems down 2 units each day since. I have not washed them yet and will hopefully next Saturday, Oct. 2nd. We will see if the units go up 2 units again.

By the way, the graph is low for today since the day of sunshine is not yet over.

About dansolar

Teacher of the Deaf 35 years Solar supporter since 1970. Solar panel system owner since August, 2010
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