How We Calculate Solar Costs and Savings
This site provides estimated solar panel costs, savings, and payback periods for cities across the United States. Our goal is to help homeowners understand whether solar may be a worthwhile investment in their location.
Data Sources and Assumptions
Solar estimates are based on a combination of publicly available data and standard industry assumptions, including:
- Average residential electricity rates by state and region
- Typical solar panel system sizes for U.S. homes
- Estimated sunlight hours based on geographic location
- Standard system efficiency assumptions
Estimated Savings and Payback
Estimated annual savings are calculated by comparing the cost of grid electricity to the expected energy production from a typical residential solar system.
Payback period estimates are based on average installation costs and do not account for all real-world variables such as:
- Roof angle and shading
- Financing terms
- Installation pricing differences
- Local utility policies
Important Disclaimer
All figures provided on this site are estimates for informational purposes only. Actual solar costs and savings will vary based on your home, location, and installation details.
We recommend obtaining multiple quotes from licensed solar installers to get an accurate estimate for your specific situation.