15
Aug
Real-world wake-up calls When our factory in Phoenix lost grid power for 36 hours (scenario), the rooftop PV array produced only 18% of expected output during critical daylight hours (data) — who covers the production loss and the payroll that follows? For a practical solar installation guide, I start by walking through these gaps with you, step by step. I vividly recall a 50 kW commercial rooftop array I helped specify in June 2018 in downtown Phoenix; shading from a new adjacent building and a mismatched inverter left us 15% short of predicted kWh, and that shortfall cost the owner…