ArcticGranite
Well-Known Member
5 to 7, warrantied for 25.
7 or 8 years ago I had your scepticism, PV panels just weren't quite there yet and storage solution were clunky at best.
Now people have competitions to see who can power their house without the solar input on batteries alone for the longest time.
It's getting to the point where alot of utilities won't let you sell back to the grid because they'd end up sending you cheques every month because arrays produce such a surplus.
My neighbors put up rooftop solar, $24K. I'll see what it generates. There's no batteries. Winter production was minimal, snow/frost/ice fog/lo sun angle. I'm curious though.