Solar savings & payback in St. Louis
Middle-America sun with full retail net metering.
This calculator uses St. Louis's own sun (~4.1 kWh/kW/day, 2% below the MO average) with Missouri's rate and export rules. For a typical $150/month bill we estimate a payback of about 13.3 years.
- St. Louis sun
- ~4.1 kWh/kW/day
- MO average sun
- ~4.2 kWh/kW/day
- Electricity rate
- 14¢/kWh
- Net metering
- Full retail net metering (1:1)
Statewide policy, incentives, and the full cost-by-size table live on the Missouri page
Where your money goes
Your 25-year money curve
What the planet gets
Net metering credits exported power against what you draw from the grid. Rates vary by state, California's NEM 3.0 pays much less for exports than 1:1 states.
Enter a valid monthly bill and tariff greater than zero to see your results.
St. Louis solar FAQs
Is solar worth it in St. Louis?
For a typical $150/month bill, we estimate a St. Louis system pays for itself in about 13.3 years, using local sun (~4.1 kWh per kW per day), Missouri's average 14¢/kWh rate, and full retail net metering (1:1). No federal tax credit is assumed (it expired at the end of 2025). Middle-America sun with full retail net metering.
How much do solar panels generate in St. Louis?
Roughly 4.1 kWh per installed kW per day averaged over the year, about 1,496 kWh per kW annually. A typical 6kW system produces around 9000 kWh a year here. Roof orientation and shading move these figures.
What rebates are available in St. Louis?
Some utilities offer per-watt rebates. Utility-level programs come and go, check your utility's website and dsireusa.org for anything city-specific before signing.