I understand the microinverter bell curve and how clipping can be both harmful & beneficial. I don't know, in my situation, if it's something I should complain about. Maybe, the bottom line is my production in the first ten months seems to fall about 10% short of the projection in the contract, using the numbers back in Post #86. 13,815 kWh projected; 12,361 kWh actual.
Also, I understand not getting the STC of 38x320=12.16kW. With my 38x250 microinverters, that equals 9.5kW. But, I peak at 10.28kW. Shouldn't the microinverters be clipping me at 9.5, not 10.28?
Well, lets take your questions:
Clipping is not harmful if the number of panels per string of inverters does not exceed that 20A capacity and actually, in reality only 80% of that 20A is where one designs, not full 20A
To answer your question on that 600 inverterI would say has a bit more output.
With your setup with larger panels you will produce more energy on the longrun as it will ramp up, generate more power with lower sun angles as the clipping images shows. So, it is all beneficial.
I am sure the projection is off as your inverter will never give you that extra 10%, it is clipping and because it is clipping yopu are only 10% less that projected. If the panels were closer matched to the inverter, that difference would be perhaps 13%-15% less, While I see hoiw their projection was calculated, only on panel size, you will never get there as it cannot happen, even in ideal consditions.
As to that 9.5 and 10.28, it happens as the inverter will overclock on the clipping, perhaps by 5%, in that number it is 8%. And, that 10.28 was over a much longer time span, more energy produced versus a no clip bell curve that just reached max output for about 15 min or so
My small inverter rated at 215W has produced max 226W once. Yours over time, perhaps more often will get closer to that 9.5kW.
Enjoy the bonus. No, it isn't a brick wall cut off on the inverters.
Here is a modeled shift in orientation: