Solar Savings Calculator
Estimate monthly bill savings, payback period, annual kWh production, and CO2 offset from your electricity bill and local sun hours.
Estimate bill savings from solar
Enter your monthly electricity bill and typical peak sun hours for your area. The calculator estimates system size, annual kilowatt-hour production, monthly savings, simple payback, and approximate CO₂ offset using common performance assumptions.
Related energy tools
Size an array with the Solar Panel Calculator, estimate wattage needs with the Solar Panel Wattage Calculator, or review footprint with the Carbon Footprint Calculator.
Frequently Asked Questions
How accurate is this estimate?
It is a planning estimate. Real production depends on panel efficiency, roof angle, shading, weather, and local net metering rules.
Where do I find peak sun hours?
Search for your city’s average peak sun hours. Many US locations fall between 4 and 6 hours per day.
Can I change the electricity rate?
Yes. Adjust the $/kWh field to match your utility bill or time-of-use rate.
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