APS is the largest electric utility in Arizona, United States. With 6,500 MW of generating capacity, APS serves more than one million customers in 11 counties throughout most of the state. From APS’s perspective, power generation from rooftop PV is essentially negative demand, contributing to the duck curve in APS’s daily load profile. Significant challenges occur when cloudy weather limits the amount of energy generated by rooftop systems especially sudden storms during monsoon season.
Read more about how TESLA’s load forecasts help improve APS’s planning decisions here.