Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Solar Energy
Solar Payback Period Calculator
Calculate how many years a solar PV system takes to pay back its net upfront cost through annual electricity bill savings. Use it as the primary financial test when evaluating whether to install solar.
Fill in the required fields to see your result.
Solar Energy
Solar Financing Comparison Calculator
Compares the true monthly net cost of financing a solar installation with a loan versus the monthly savings it generates, helping you decide whether to pay cash, take a loan, or lease. Use it at the point-of-sale when evaluating installer quotes.
Fill in the required fields to see your result.
Key differences
| Solar Payback Period Calculator | Solar Financing Comparison Calculator | |
|---|---|---|
| Category | Solar Energy | Solar Energy |
| Inputs required | 3 | 4 |
| Result | Payback Period (years) | Net Monthly Cost (Loan) ($) |
| What it does | Calculate how many years a solar PV system takes to pay back its net upfront cost through annual electricity bill savings. Use it as the primary financial test when evaluating whether to install solar. | Compares the true monthly net cost of financing a solar installation with a loan versus the monthly savings it generates, helping you decide whether to pay cash, take a loan, or lease. Use it at the point-of-sale when evaluating installer quotes. |