About SolarPayback

Free solar payback calculators built on open data.

SolarPayback helps U.S. homeowners estimate whether solar panels make financial sense in their city. We combine satellite-derived solar irradiance from Open-Meteo, EIA electricity rates, and DSIRE incentive data into a simple, transparent calculator.

Unlike installer lead-gen sites, we do not sell your contact information. Our calculators are free, anonymous, and built for educational purposes.

Data Philosophy

We prioritize open, public-domain data sources. No paywalled APIs. No proprietary black boxes. Every assumption is documented on our methodology page.

Disclaimer

SolarPayback is an informational tool, not investment advice. Always obtain multiple quotes from licensed installers and consult a tax professional before claiming credits.