I have 16 x 160 watt Evergreen poly modules on the rack. It was all installed at once, about 2 years ago. I just recently added 3.3kw to my roof using 185 watt monos and Enphase inverters.
I have been trying to compare the output of my central inverter system to my Enphase system. If I compare production per/watt it seems that the Enphase system puts out about %25 more. I definately need to do more day to day comparisons of output to get long term numbers of which system is better.
You also have to consider the Enphase modules are high quality monos and the Evergreens are "Blemished" and 2 years old
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