Checked
Warren County, IL Energy
Electric utilities, power plants and charging stations in Warren County, Illinois.
- Illinois home electricity
- 19.22¢/kWh
- July 2026
- Regular gas, region
- $4.15/gal
- Midwest (PADD 2)
- Electric utilities
- 2
- Serving Warren County
Electric utilities serving Warren County
As reported to EIA for 2025. A utility may serve only part of the county. Customers and prices are for its whole Illinois service area
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| Utility | Customers in state | Home price | Home bill |
|---|---|---|---|
| Ameren Illinois CompanyInvestor Owned | 1,229,940 | 16.70¢/kWh | $148/mo |
| McDonough Power CoopCooperative | 4,980 | Not reported | Not reported |
Alternative fuel stations
| Fuel | Stations |
|---|---|
| Biodiesel (B20 and above) | 3 |
| Ethanol (E85) | 1 |
Power plants in Warren County
35.0 MW of operating capacity
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| Plant | Fuel | Capacity |
|---|---|---|
| Earp Solar, LLC | Solar | 35.0 MW |
Electricity rates and gas prices are state or regional averages. Utility service areas come from EIA Form 861 and are listed by county, so a utility listed here may not serve every address in the county.
Frequently asked questions
- What electric company serves Warren County?
- Ameren Illinois Company, McDonough Power Coop report serving Warren County to EIA. Check your bill or address with the utility to confirm which one serves you.
- Are there power plants in Warren County?
- Yes. Warren County has 1 operating power plant with 35.0 MW of capacity. The largest is Earp Solar, LLC (35.0 MW, solar).