How this solar payback calculator works
Net upfront cost equals installed cost minus incentives. Simple payback is net cost ÷ annual savings. Lifetime net savings is annual savings × analysis years minus net cost.
How to use it
- Installed project cost. Enter the value in $.
- Credits/incentives. Enter the value in $.
- Estimated annual bill savings. Enter the value in $.
- Analysis period. Enter the value in years.
- Request the result. Add your email, then select “Email & show my result.”
What to do with the number
This is a simple payback model; it does not model panel degradation, rate inflation, financing, taxes or investment opportunity cost. Use an annual-savings estimate based on a site-specific production model rather than roof area alone.
Planning estimate
Use this result as a starting point, not a guarantee. Product specifications, site conditions, manufacturer guidance, local codes, taxes, labor, tolerances, and rounding can change the real requirement or cost.