Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Payback Period Calculator (with Incentives)
Determine how many years your solar installation takes to break even after applying the federal tax credit, state rebates, and your local electricity rate. Use it before signing any installer quote.
Simple payback period
9.03 years
6-10 years is the common US residential range after the 30% federal credit. At 9 years you recoup costs with roughly 16 warranty-years of free electricity remaining.
Payback is the years for net electricity savings to repay the post-incentive system cost; most residential PV systems carry 25-year production warranties, so payback well under that means decades of free power.
Solar Loan Payment Calculator
Determine your fixed monthly payment for a solar loan and see how the federal tax credit and monthly electricity savings affect your true net cost. Use it when comparing financing options before signing a solar contract.
Key differences
| Solar Payback Period Calculator (with Incentives) | Solar Loan Payment Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 5 | 5 |
| Result | Simple payback period (years) | Net Monthly Cost ($) |
| What it does | Determine how many years your solar installation takes to break even after applying the federal tax credit, state rebates, and your local electricity rate. Use it before signing any installer quote. | Determine your fixed monthly payment for a solar loan and see how the federal tax credit and monthly electricity savings affect your true net cost. Use it when comparing financing options before signing a solar contract. |