Solar Panel ROI Calculator
Calculate your savings and ROI for switching to solar energy.
Payback Period
7.8 Years
Net Cost
$14,000
20-Year Profit/Savings
$22,000
Method
How this calculator works
Payback Period (Years) = Net Cost / (Monthly Savings × 12). 20-Year Savings = (Annual Savings × 20) - Net Cost.
NetCost = GrossCost - Incentives
AnnualSavings = MonthlySavings * 12
PaybackYears = NetCost / AnnualSavings- Enter the total gross cost of the solar system.
- Enter any tax incentives or rebates.
- Enter your average monthly electricity bill savings.
- View payback period and long-term savings.
Examples
Worked examples
Real numbers, end-to-end results.
$15,000 cost, $4,500 incentives, $150/mo savings
Payback: 5.8 years
Based on standard 30% federal tax credit.
Use cases
When to use it
- Home renovation planning.
- Evaluating green energy options.
- Financial forecasting.
FAQ
Frequently asked questions
What is a good payback period for solar panels?
A typical solar payback period in the US is between 6 and 10 years, depending on your location, system cost, and local electricity rates.
Are tax incentives included?
Yes, this calculator allows you to subtract any federal, state, or local tax incentives from the gross cost.
How long do solar panels last?
Most modern solar panels have a lifespan of 25-30 years, often with warranties guaranteeing 80% or more of their original efficiency at 25 years.