Solar Panel Payback Calculator
Find out how many years until solar panels pay for themselves. Enter system cost, incentives/tax credits and annual electricity savings to see payback year and a cumulative savings chart.
How to use this tool
- Enter total system cost, tax credits / incentives, annual electricity savings and analysis period in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your payback period and the full breakdown beneath it.
Solar panels can dramatically cut electricity bills, but the upfront cost is significant. This calculator finds the payback year — when cumulative savings equal your net investment — and shows the profit beyond that point.
The US federal solar tax credit (ITC) is currently 30% of system cost. Many states offer additional incentives.
Frequently asked questions
- What are typical solar savings?
- A 6–8 kW residential system typically saves $1,200–$2,500 per year depending on local electricity rates and sunlight. Check your last 12 months of electric bills to estimate your savings accurately.
- How long do solar panels last?
- Most panels carry 25-year performance warranties and last 30+ years. Output typically degrades about 0.5% per year.