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Ryland · 06-07-11, 07:27 AM

Those are not really 220 watt panels, they are 194 watt panels.

Max Peak Power Pmax 220 W (0% / +3%)
CEC PTC Listed Power 194 W

You have to go to their "250 watt" panel before you get 223 watts out of it, that is, if you wanted to compare rated outputs to rated outputs, instead of their "Max Peak Power" the rated output is based off 1000 watts per square meter of sun energy hitting the panel and is what your sun hours per day is based off.
Either way, the listed power output is what you want to compare, it's like comparing EPA miles per gallon when comparing cars.

06-07-11, 07:27 AM	#6
Ryland Master EcoRenovator Join Date: Mar 2009 Location: Western Wisconsin. Posts: 913 Thanks: 127 Thanked 82 Times in 71 Posts	Those are not really 220 watt panels, they are 194 watt panels. Max Peak Power Pmax 220 W (0% / +3%) CEC PTC Listed Power 194 W You have to go to their "250 watt" panel before you get 223 watts out of it, that is, if you wanted to compare rated outputs to rated outputs, instead of their "Max Peak Power" the rated output is based off 1000 watts per square meter of sun energy hitting the panel and is what your sun hours per day is based off. Either way, the listed power output is what you want to compare, it's like comparing EPA miles per gallon when comparing cars.