Terms of use
Please read these terms before relying on anything here.
Estimates only
Everything on this site — including payback periods, savings projections, system sizes, and verdicts — is an estimate generated from public data and stated assumptions. Actual results depend on your specific roof, utility, usage, equipment, and installation pricing, and will differ.
Not professional advice
This site does not provide tax, legal, financial, engineering, or contractor advice. Nothing here is a recommendation to buy, lease, or finance a solar system, or to choose any particular installer or product. Consult qualified professionals before making decisions.
No warranty
The information is provided "as is," without warranties of any kind. We make no guarantee that data is current, complete, or accurate, and incentive and net-metering rules change frequently. Verify all figures with your utility, state program, and a tax professional.
Limitation of liability
To the fullest extent permitted by law, we are not liable for any decisions made or losses incurred based on this site's estimates or content.
External links
We link to third-party sources (such as the IRS, EIA, NREL, and DSIRE) for your convenience. We are not responsible for the content or accuracy of external sites.