I used them while designing my system. Just checked the numbers again against last 365 days - 97.5% accurate. Previous check I did year ago - I think it was more like 99.9% accurate.
My 3 month old system is running about 20% above their numbers, not clear on where the difference is. From some other modeling using pvlib, I suspect that the panels are over producing, as that’s the easiest way to make the numbers work. It’s also possible that the measurements are miscalibrated, or we’ve just had weather that’s not in line with historical averages.
