Solar in Chesterfield, MO
With Ameren Missouri's electricity at about 13.9¢ per kWh and 1,342 kWh of sun per kW, solar is not worth it for a typical Chesterfield home today: about a 16.8-year payback.
- Payback, typical home
- 16.8 yrsMissouri: 15.5 yrs
- 25-year net
- $9,747after paying $17,600
- Sun
- 1,342kWh per kW per year
- Electricity
- 13.9¢23% below U.S. average
A typical Chesterfield home, by the numbers
| Utility | Ameren Missouri |
|---|---|
| Electricity use | 1,032 kWh a month |
| Best-value system | 6 kW, about 14 panels, 8,051 kWh a year (65% of use) |
| Cost | $17,600 |
| First-year savings | $1,120 |
| Payback | 16.8 years |
| Exported power | 4.6¢/kWh (Ameren Missouri) |
Cash purchase, no federal credit, 1.7% yearly rate increases. Run it with your own numbers.
Homes in Chesterfield
- Owner-occupied homes
- 78%
- Single-family detached
- 63%
- Median home value
- $473k
- Median year built
- 1982
- Population
- 49,574
- Roofs suitable for solar†
- 96%
Census ACS 2020–2024. †Share of 15,398 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in Chesterfield
Public installation records for Missouri don't name installers, so we can't rank local companies here. Browse installers in Missouri.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Chesterfield
Is solar worth it in Chesterfield, MO?
For a typical home in Chesterfield, solar is not worth it at 2026 prices: a 6 kW system costs about $17,600 after state incentives, saves about $1,120 in year one and pays back in about 16.8 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Chesterfield?
About 1,342 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 5% less than the Missouri average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Chesterfield?
Most homes in Chesterfield are served by Ameren Missouri, at about 13.9¢ per kWh on average. Some areas are served by Cuivre River Electric Cooperative, Crawford Electric Cooperative.
How much do solar panels cost in Chesterfield?
A fair cash price is around $2.85 per watt before incentives, so about $17,600 for a 6 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Ballwin 16.3 yrs
- Maryland Heights 16.7 yrs
- Wildwood 16.1 yrs
- St. Peters 15.6 yrs
- St. Charles 15.7 yrs
- Kirkwood 16.7 yrs
- O'Fallon 15.6 yrs
- University City 16.1 yrs
- All of Missouri
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.