03/25/2019
WNW San Antonio install
San Antonio, TX
The system is rated at 9.3kw, but realistically, it generates more like 8.4 peak on clear days. Take into account accumulation of dust on the panels, this is very reasonable.
SunPower reply
03/29/2019
Thank you for choosing SunPower! Yes, it is helpful to keep panels clean for maximum production. Hopefully you're aware that there are many window washing services that also specialize in cleaning solar panels, and it is affordable. Check with your local SunPower dealer for recommendations.