PV Temperature Derating Calculator
Specifications are provided at 25C operating temp, but actual temps are higher in operation. Derating is about 0.4%/C - or 8% at the typical 45 degree workign temp.
Derating calculator:
https://www.digivation.com.au/solar/tempderate.php
See Also
- Solar angle derating - Solar Angle Calculator
- For Seed Eco-Home 4 - total derating takes nominal 6.4kW to 5.3kW. See PV design optimization - [1]