I am not sure how you plan on mounting your panels.
I mounted mine 4” off a white metal roof with space between the rows. This lets alot of air under them.
If I have one bad microinverter I don’t have to take out a bunch of panels just replace one microinverted.
If you have the space you might thing about giving the panels some extra room.
I have compared my system to other with the same KW instlled and we seem to generate more power.
I am a good bit over my PV watt est. My panels are not at the best angle but al little off angle does not seem as important as less heat
I don't know if you want to know about panel sales but I was just emailed good 245 watt panels for .74/w
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