Solar Panel Temperature Derating Calculator

Overview

Calculate how much power is lost by a solar panel/system due to temperature effects.

Compare the performance of Mono/Poly panels and Thin film amorphous panels due to temperature effects.

NOCT	°C	Cell temp @ 800mW and 20°C ambient, typically 45°C
Pmax/°C	%	Coefficient for max Power varying with temp, -0.48% for mono/poly, -0.20% for amorphous
Ambient Temp	°C
Incident Irradiation	^mW⁄_m²	Incident irradiation is about 1000^mW⁄_m² in summer when the sun is overhead
System Size	Wp