Solar Panel ROI Calculator

Free solar panel ROI calculator. Calculate payback period, lifetime savings, and return on investment for residential solar panels. Includes tax credits and incentives.

CalcLeap Editorial Team

Reviewed by certified professionals · Last updated April 1, 2026

Calculate Your Solar ROI

Total System Cost ($) Average residential solar system: $15,000-$30,000

Federal Tax Credit (%) Current ITC (Investment Tax Credit): 30% through 2032

State/Local Incentives ($) Rebates, SREC programs, etc. (varies by state)

Current Monthly Electric Bill ($)

% of Bill Offset by Solar (%) Most systems offset 80-100% of electricity usage

Annual Electricity Rate Increase (%) US average: 2-4% per year

System Lifespan (years) Solar panels typically last 25-30 years

Your Solar Investment Results

Net System Cost (after incentives): $0

First Year Savings: $0

Payback Period: 0 years

25-Year Lifetime Savings: $0

Return on Investment (ROI): 0%

Equivalent Annual Return: 0%

Understanding Your Solar ROI

How Solar Panel ROI Works:

Net System Cost: Total installation cost minus federal tax credits and state/local incentives
Payback Period: Number of years to recoup your initial investment through electricity savings
Lifetime Savings: Total money saved over the system's 25-year lifespan
ROI: Total return as a percentage of your initial investment

Factors That Improve Solar ROI

✅ High electricity rates in your area
✅ Good sun exposure (south-facing roof, minimal shade)
✅ Available federal, state, and local incentives
✅ Net metering programs (sell excess power back to grid)
✅ Rising electricity costs over time
✅ Low-interest financing options

Current Federal Solar Tax Credit (2026)

The federal solar Investment Tax Credit (ITC) allows you to deduct 30% of the cost of installing a solar energy system from your federal taxes. This credit is available through 2032.

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