What I forgot to mention is brand new I was seeing peaks of 210 to 220 watts... so the fact that I am still seeing this 7 years later without any panel cleaning other than the occasional rain tells me the degradation is minimal. Based on specs I should be seeing a 6% loss by now and I am not.
12 panels - 60 cell Poly - 245 Watt STC installed in 2012
12 controllers that are 98.5% efficient @ 200 watts
All of them showing 210-220 watts peak from the controller output with 216 average - based on spec degradation I should be seeing 196-206 watts peak....
It all depends on cell quality and the Canadian Solar C6SP245 that I have seem to be real good.
Just not seeing the degradation you are claiming with my panels.... not to say other foreign made ones would not have an issue.
Cheers,
Rob
12 panels - 60 cell Poly - 245 Watt STC installed in 2012
12 controllers that are 98.5% efficient @ 200 watts
All of them showing 210-220 watts peak from the controller output with 216 average - based on spec degradation I should be seeing 196-206 watts peak....
It all depends on cell quality and the Canadian Solar C6SP245 that I have seem to be real good.
Just not seeing the degradation you are claiming with my panels.... not to say other foreign made ones would not have an issue.
Cheers,
Rob
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