Ameren Illinois Company electricity rates in Illinois, 2025
Ameren Illinois Company’s 587,659 residential customers paid an average of 16.70¢ per kWh in 2025, 5% below the Illinois average of 17.67¢. The typical home used 888 kWh a month, for an average bill of $148.
- 16.70¢avg ¢/kWh (2025)+1.45¢ (+9.5%) vs 2024
- $148Avg monthly billIllinois: $127
- 888 kWhAvg monthly useIllinois: 716 kWh
- 587,659Residential customersFull-service utility
| Sector | Customers | Sales (MWh) | Revenue | ¢/kWh 2025 | ¢/kWh 2024 | Change |
|---|---|---|---|---|---|---|
| Residential | 587,659 | 6,261,586 | $1,045,940,700 | 16.70¢ | 15.26¢ | +1.45¢ (+9.5%) |
| Commercial | 75,726 | 2,570,138 | $375,336,700 | 14.60¢ | 13.04¢ | +1.56¢ (+12.0%) |
| Industrial | 323 | 643,513 | $49,124,400 | 7.63¢ | 4.75¢ | +2.88¢ (+60.6%) |
| Transportation | 1 | 14,417 | $1,726,800 | 11.98¢ | 8.83¢ | +3.14¢ (+35.6%) |
| All sectors | 663,709 | 9,489,654 | $1,472,128,600 | 15.51¢ | 13.88¢ | +1.64¢ (+11.8%) |
How Ameren Illinois Company compares
- Illinois residential average, 2025: 17.67¢ per kWh, 716 kWh a month, $127 average bill. U.S. average: 17.23¢, 874 kWh, $151.
- Among 24 full-service utilities in Illinois with at least 1,000 residential customers, Ameren Illinois Company ranks 17 of 24 from lowest to highest average price.
- Latest monthly figure: Illinois homes paid 19.32¢ per kWh in August 2026 (preliminary), against 18.03¢ in August 2025. Summer months often run higher than the annual average.
- From 2024 to 2025 this average rose 9.5%; the state average rose 11.3%.
- Another 475,151 residential customers buy supply from a competitive supplier and pay Ameren Illinois Company only for delivery, averaging 8.77¢ per kWh for that service.
- Ameren Illinois Company is an investor-owned utility, a private company whose rates are set by the state utility commission. Balancing authority: MISO.
Where Ameren Illinois Company serves
EIA lists 81 Illinois counties in its 2025 service territory: Adams, Alexander, Bond, Brown, Bureau, Calhoun, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Crawford, Cumberland, DeWitt, Douglas, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Hancock, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Johnson, Kendall, Knox, LaSalle, Lawrence, Livingston, and 41 more.
893 ZIP codes are matched to Ameren Illinois Company in NREL’s 2024 ZIP file: 60518, 60531, 60536, 60537, 60541, 60545, 60548, 60549, 60551, 60560, 60911, 60912, 60918, 60921, 60922, 60924, 60926, 60927, 60928, 60929, 60930, 60931, 60932, 60936, 60938, 60941, 60942, 60945, 60946, 60948, 60949, 60951, 60952, 60953, 60955, 60956, 60957, 60958, 60959, 60960, 60962, 60963, 60964, 60966, 60968, 60970, 60973, 60974, 61231, 61234, 61235, 61238, 61254, 61259, 61260, 61272, 61277, 61281, 61283, 61301, and 833 more. Utility boundaries do not follow ZIP lines, so a ZIP can have more than one provider.
Illinois full-service utilities with similar rates
| Provider | ¢/kWh | Avg bill | Customers |
|---|---|---|---|
| Southwestern Electric Coop Inc (IL) | 15.37¢ | $178 | 24,414 |
| Corn Belt Energy Corporation | 15.59¢ | $148 | 34,952 |
| Tri-County Electric Coop, Inc (IL) | 16.18¢ | $201 | 16,203 |
| Egyptian Electric Coop Assn | 16.21¢ | $196 | 13,695 |
| Wayne-White Counties Elec Coop | 16.39¢ | $176 | 11,792 |
| Coles-Moultrie Electric Coop | 17.60¢ | $206 | 8,505 |
| Eastern Illinois Elec Coop | 17.68¢ | $228 | 11,001 |
| Commonwealth Edison Co | 17.71¢ | $107 | 3,020,130 |
Sources
- U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 final data (f8612025.zip, file dated October 7, 2026): Sales to Ultimate Customers, Average Monthly Bill and Service Territory tables.
- EIA Form EIA-861, 2024 final data (f8612024.zip, file dated December 4, 2025), for the 2024 comparison.
- EIA Electric Power Monthly, Table 5.6.A (average price by state, August 2026 and August 2025; 2026 values are preliminary), file dated October 22, 2026.
- National Renewable Energy Laboratory via OpenEI, U.S. Electric Utility Companies and Rates: Look-up by Zipcode (2024) (investor-owned and other utilities, files dated November 10, 2025), used only to match ZIP codes to utilities.
Average price = residential revenue ÷ residential kWh sold, as reported to EIA. It includes fixed monthly charges, taxes passed through in revenue and seasonal tiers, averaged over the year. Your own rate depends on your tariff and usage.