What Does Solar Panel Derating Mean? Real Output Explained
Solar panel derating means reducing a solar module’s laboratory-rated power to estimate the lower output it will produce under real operating conditions. The reduction accounts for temperature, irradiance, shading, soiling, wiring, inverter conversion, mismatch, equipment limits, and aging. A 400-watt panel with a 0.80 combined derate factor produces about 320 watts under the modeled conditions. […]