Renaissance Man
New Member
Hello! I am new to the forum and just getting started on a DIY residential solar grid-tied system. Before I can begin, I have to fill out the paperwork for a site review from my utility company. One question is the "Capacity Factor" of my system. My system, when built, will be about 15.4KW from the panels and my PVWatts annual production is estimated at 19,241KWh. Can anyone explain the way to calculate the CF?