Salvo wrote:
The irradiance during the test probably wasn't 1000W/m^2 but somewhat lower. It's difficult to determine irradiance. But you can see from this graph the greater the irradiance the greater Vmp becomes.
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Salvo that is part of the big puzzle to me. The Isc was over the rated Isc of 8.3 so to me that means the panel is at least at STC for irradiance, allowing for the high temperature raising Isc but lowering Voc.
I just figure if the Isc is over its rating that means the insolation is ok, and any losses are from something else. No?