Ameren Illinois
Ameren Illinois is a electric & gas utility serving 1,200,000 customers in Illinois. Average residential rate: 15.10¢/kWh (12.3% below national average).
15.10¢
per kWh
1,200,000
customers
IL
state
Electric & Gas
service type
Rate Comparison
| Metric | Ameren Illinois | Illinois Avg | National Avg |
|---|---|---|---|
| Avg Rate | 15.10¢/kWh | 16.27¢/kWh | 17.22¢/kWh |
| Est. Monthly Bill (900 kWh) | $135.90 | $146.43 | $154.98 |
| Est. Annual Bill (900 kWh/mo) | $1,630.80 | $1,757.16 | $1,859.76 |
About Ameren Illinois
Ameren Illinois is one of the major electric utilities serving Illinois. With 1,200,000 customers, it ranks among the largest utilities in the state.
The utility's average rate of 15.10¢/kWh is 12.3% below the national average of 17.22¢/kWh.
Visit the official Ameren Illinois website for current rates, outage maps, and payment options.
Other Utilities in Illinois
| Utility | Rate (¢/kWh) | Customers | Type |
|---|---|---|---|
| ComEd | 16.27¢ | 4,000,000 | electric |
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Data verified March 2026 · Source: U.S. Energy Information Administration (EIA)