Electricity rates and average bill in Illinois
In 2025, the average Illinois household used 716 kWh a month and paid $127, an average price of 17.7¢ per kWh. That is the 17th highest price of the 50 states and DC (U.S.: 17.2¢).
Estimate your bill · Heat pump vs furnace · Water heater cost
Monthly residential electricity price in Illinois
Source: EIA, average residential price per month (¢/kWh); last 12 months average 19.1¢.
Electric utilities in Illinois
Average residential price, usage and bill of each utility in 2025 (utilities and providers with at least 1,000 homes). Find yours by ZIP code in the bill calculator.
Utilities (default service)
| Name | Homes | ¢/kWh | kWh / mo | Avg. bill |
|---|---|---|---|---|
| Commonwealth Edison Co Investor-owned utility | 3,020,130 | 17.7 | 606 | $107 |
| Ameren Illinois Company Investor-owned utility | 587,659 | 16.7 | 888 | $148 |
| MidAmerican Energy Co Investor-owned utility | 73,481 | 10.0 | 744 | $74 |
| City of Springfield Municipal utility | 59,366 | 13.1 | 864 | $113 |
| City of Naperville Municipal utility | 57,225 | 14.6 | 769 | $112 |
| Sunrun Inc. Behind the Meter | 38,135 | 17.0 | 661 | $112 |
| Corn Belt Energy Corporation Electric cooperative | 34,952 | 15.6 | 949 | $148 |
| Southwestern Electric Coop Inc Electric cooperative | 24,414 | 15.4 | 1,160 | $178 |
| Southeastern IL Elec Coop, Inc Electric cooperative | 22,607 | 14.8 | 1,222 | $181 |
| Norris Electric Coop Electric cooperative | 18,163 | 15.1 | 1,178 | $177 |
| Jo-Carroll Energy, Inc Electric cooperative | 17,278 | 20.5 | 727 | $149 |
| Tri-County Electric Coop, Inc (IL) Electric cooperative | 16,203 | 16.2 | 1,241 | $201 |
| City of St Charles Municipal utility | 14,901 | 14.6 | 711 | $104 |
| Egyptian Electric Coop Assn Electric cooperative | 13,695 | 16.2 | 1,208 | $196 |
| Wayne-White Counties Elec Coop Electric cooperative | 11,792 | 16.4 | 1,074 | $176 |
| Eastern Illinois Elec Coop Electric cooperative | 11,001 | 17.7 | 1,291 | $228 |
| EverBright, LLC Behind the Meter | 10,410 | 15.0 | 810 | $122 |
| City of Batavia Municipal utility | 10,072 | 14.0 | 747 | $105 |
| Shelby Electric Coop, Inc Electric cooperative | 9,882 | 21.5 | 1,087 | $234 |
| Rock Energy Cooperative Electric cooperative | 9,421 | 14.9 | 762 | $113 |
| Menard Electric Coop Electric cooperative | 9,036 | 19.4 | 1,022 | $199 |
| City of Geneva Municipal utility | 8,675 | 11.7 | 770 | $90 |
| Coles-Moultrie Electric Coop Electric cooperative | 8,505 | 17.6 | 1,170 | $206 |
| Rochelle Municipal Utilities Municipal utility | 5,993 | 13.1 | 639 | $84 |
| City of Peru Municipal utility | 4,793 | 12.5 | 673 | $84 |
| Mt Carmel Public Utility Co Investor-owned utility | 4,337 | 19.7 | 898 | $177 |
| Palmetto Solar, LLC Behind the Meter | 4,103 | 13.7 | 662 | $90 |
Retail choice in Illinois
Illinois lets many households buy their electricity from a competitive supplier while the local utility still delivers it. Customers who buy energy from a supplier paid an average of 10.8¢/kWh for the energy alone (1,122,430 homes), plus the utility's delivery charge. Compare a supplier's offer with the utility's default price including all charges, not just the energy rate.
Heating: heat pump vs. gas in Illinois
For a 2,000 sq ft home with average insulation at a typical Illinois location (5,770 heating degree days, weather station Piper City), heating with a high-efficiency heat pump costs about $1,373 a year at the state's average electricity price, compared with $784 for a 92% gas furnace, $1,505 for propane and $2,292 for heating oil. Run it with your ZIP code and your home.
Heating fuel prices
| Natural gas, residential, 2025 | $11.25/Mcf = $1.09/therm |
| Propane, 2025/26 winter average | $1.91/gal |
| Heating oil, 2025/26 winter average (U.S., no state survey) | $4.01/gal |