Quote:
Originally Posted by Travis
I have one 85W panel. I've never measured that many Watts under load, but have often measured the nameplate Amps under load (Imp). As long as I am getting the rated energy out of it, I hadn't really worried about the Watts.
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Watts is amps times volts and that is part of where a maximum power point tracker comes in, it adjusts the load so your voltage and amps add up to the highest number of watts allowing you to get a few more watts out of a panel, any panel, but when comparing panels you should compare the rated output as the rated output is what they are warrantied to put out for 25 years and what they will produce with normal use without any other fancy devices, otherwise it's like buying a car based only off what kind of mileage it gets while driving a steady 55mph on a flat road.