A common and valid QUESTION.
Recently a customer bought a 10kW system and as he monitored its output he noted the MAX generation was 8 KW. Like many customers he was thinking this was off and there was something wrong with the system. I was able to easily explained to him that this is normal and wanted to share the quick and easy explanation for this difference in name plate system size and actual real time output. Here is how it works and why panels do not generate their rated capacity.