METHOD
How it is calculated
Saving = self-used energy × price + exports × sale price − maintenance. Payback = investment / saving.
⌂ Home, building and energy
Solar payback calculator
Estimate savings and simple solar payback.
01
Your inputs
Starting values are an example. Replace them with your own.
Your inputs stay in your browser.
02
Your result
Enter your details and run the calculation.
TRACEABLE
Sources and validity
Shown model from 2026-10-13.
How we maintain data ↗