Free Solar Savings Calculator
Estimate your system size, installation cost, payback period, and 25-year savings. Adjusted for your state's sun hours and local pricing.
Solar Savings Estimator
Important: These estimates are based on average data for your state and are for informational purposes only. Actual costs and savings depend on your specific roof, shading, equipment choices, installer, and utility rate structure. Always obtain written quotes from at least 3 NABCEP-certified installers.
How Our Calculator Works
Our estimator uses state-specific data including average cost per watt, peak sun hours, and a cost index that accounts for local labor market differences. We calculate the optimal system size based on your monthly electric bill and available roof space.
The 30% federal Investment Tax Credit (ITC) is applied automatically to show your after-incentive cost. Annual savings are estimated at 85% electricity offset, which is typical for properly sized residential systems.
The payback period represents how many years until cumulative savings exceed your net cost. Most solar systems pay for themselves in 7-12 years and then provide 15-20 years of essentially free electricity.
View State-Specific Data
See detailed solar cost data for your state including incentives and top installers.
Costs by State