I installed 40 panels in 2016 and completed another 20 panels for Phase 2 in 2017. My system is 16.1 kW gross and 14 kW net with my enphase microinverters. When my solar system was new, I hit 107 kWh on a perfect and cool, sunny May day. After 7 years and some degradation, I just hit 92 kWh...