Solar Panel ROI Calculator interactive tool
Cost before any tax credits or rebates.
Federal ITC is typically 30%.
What Is Solar Panel ROI?
A solar panel ROI calculator evaluates the financial viability of installing a photovoltaic (PV) solar system on your home. Transitioning to solar is a massive capital investment, and this energy savings estimator helps homeowners determine exactly when that investment will become profitable.
Understanding the Payback Period: How Long to Break Even on Solar Panels?
The most important metric in solar math is the payback period. This is the amount of time it takes for the monthly savings on your electricity bill to equal the initial cost of installing the panels.
For example, if a system costs $15,000 after eligible incentives and saves $1,500 per year in electricity costs, the simple payback period is 10 years. Real results can differ because of maintenance, financing, panel degradation, utility rules, and changing electricity prices.
Crucial Financial Variables for Solar Return on Investment
- System Cost: The total price paid to the installer (typically $2.50 to $3.50 per watt).
- Incentives: Rebates and tax incentives vary by country, state, utility, eligibility, and year. Check current government and utility guidance before including them in a projection.
- Utility rates: Electricity prices, export credits, and local rules affect the savings estimate.
How To Use the Solar Panel ROI Calculator
- Enter the total upfront cost of the solar installation before tax credits.
- Input the percentage of federal or state tax incentives you qualify for.
- Enter your average monthly electricity bill and the system's estimated offset percentage.
- Review your calculated payback period (in years) and your 25-year estimated savings.
- Understand how long to break even on solar panels with this energy savings estimator.
Solar payback period and break-even estimate
This solar ROI calculator estimates payback and long-term savings from installation cost, incentives, monthly bill, and system offset assumptions. Utility rules, rates, maintenance, financing, and incentive eligibility can change the real result.
Need the formula or convention behind this result? Read the calculator methods and assumptions.