Solar Payback Period Calculator

Calculate how many years it takes to recoup your solar investment.

System Cost

Federal Tax Credit

State/Local Incentives

Annual Production

kWh

Electricity Rate

$/kWh

Annual Rate Increase

Panel Degradation

%/yr

Tab to move between fields

Payback Period

11 years

Net System Cost

$17,500

First Year Savings$1,500

25-Year Savings$51,137

25-Year ROI192%

How to Use This Calculator

Enter the total installed solar system cost before incentives.
Input available rebates, tax credits, and utility incentives.
Set your annual electricity bill savings from solar generation.
Enter the expected annual solar degradation rate.
Review the simple payback period in years and the 25-year NPV of the investment.

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