Electricity prices in Illinois
Homes in Illinois paid an average of 19.32 cents per kilowatt-hour for electricity in August 2026, compared with 18.03 cents a year earlier. Over the 12 months to August 2026 the average was 18.91 cents, the 16th highest of the 50 states and DC. The US average over the same period was 18.04 cents.
Monthly price since 2017
IllinoisUS average
Average residential revenue per kilowatt-hour sold, in cents, each month. Prices usually rise in summer in many states because of tiered and seasonal rates.
Year by year
| Year | Price (cents/kWh) | Average monthly bill | Average monthly use (kWh) | Residential customers |
|---|---|---|---|---|
| 2025 | 17.67 | $127 | 716 | 5,423,182 |
| 2024 | 15.87 | $110 | 693 | 5,392,473 |
| 2023 | 15.71 | $105 | 669 | 5,394,657 |
| 2022 | 15.65 | $113 | 720 | 5,376,732 |
| 2021 | 13.18 | $96 | 728 | 5,361,712 |
| 2020 | 13.04 | $94 | 721 | 5,339,608 |
| 2019 | 13.03 | $92 | 709 | 5,314,522 |
| 2018 | 12.77 | $95 | 744 | 5,289,571 |
| 2017 | 12.95 | $90 | 692 | 5,264,333 |
| 2016 | 12.54 | $92 | 733 | 5,231,540 |
| 2015 | 12.50 | $90 | 719 | 5,172,653 |
| 2014 | 11.91 | $89 | 745 | 5,145,020 |
| 2013 | 10.63 | $80 | 755 | 5,120,603 |
| 2012 | 11.37 | $87 | 767 | 5,098,645 |
| 2011 | 11.78 | $91 | 770 | 5,089,454 |
| 2010 | 11.52 | $92 | 799 | 5,070,047 |
Full calendar years with final EIA data. Bills and use are averages per residential customer account.
Last 24 months
| Month | Price (cents/kWh) | Average bill | Average use (kWh) |
|---|---|---|---|
| August 2026 (preliminary) | 19.32 | $171 | 886 |
| July 2026 (preliminary) | 19.22 | $193 | 1,005 |
| June 2026 (preliminary) | 19.89 | $143 | 718 |
| May 2026 (preliminary) | 23.85 | $123 | 514 |
| April 2026 (preliminary) | 20.47 | $110 | 538 |
| March 2026 (preliminary) | 18.85 | $115 | 612 |
| February 2026 (preliminary) | 17.83 | $128 | 719 |
| January 2026 (preliminary) | 16.36 | $133 | 812 |
| December 2025 | 17.05 | $130 | 763 |
| November 2025 | 18.28 | $105 | 572 |
| October 2025 | 18.70 | $107 | 572 |
| September 2025 | 19.01 | $124 | 653 |
| August 2025 | 18.03 | $162 | 898 |
| July 2025 | 17.19 | $183 | 1,064 |
| June 2025 | 18.26 | $160 | 878 |
| May 2025 | 18.55 | $100 | 537 |
| April 2025 | 18.28 | $95 | 522 |
| March 2025 | 17.54 | $108 | 617 |
| February 2025 | 16.46 | $114 | 695 |
| January 2025 | 15.77 | $130 | 826 |
| December 2024 | 15.96 | $113 | 710 |
| November 2024 | 17.06 | $90 | 526 |
| October 2024 | 16.48 | $88 | 535 |
| September 2024 | 15.80 | $108 | 682 |
Utilities in Illinois, 2025
Full-service (bundled) residential customers by utility for 2025, from the annual EIA-861 survey. Select a heading to sort.
| Commonwealth Edison Co | investor-owned utility | 3,020,130 | 17.71 | $107 |
| Ameren Illinois Company | investor-owned utility | 587,659 | 16.70 | $148 |
| MidAmerican Energy Co | investor-owned utility | 73,481 | 9.99 | $74 |
| City of Springfield | municipal utility | 59,366 | 13.09 | $113 |
| City of Naperville | municipal utility | 57,225 | 14.61 | $112 |
| Corn Belt Energy Corporation | electric cooperative | 34,952 | 15.59 | $148 |
| Southwestern Electric Coop Inc | electric cooperative | 24,414 | 15.37 | $178 |
| Southeastern IL Elec Coop, Inc | electric cooperative | 22,607 | 14.80 | $181 |
| Norris Electric Coop | electric cooperative | 18,163 | 15.06 | $177 |
| Jo-Carroll Energy, Inc | electric cooperative | 17,278 | 20.49 | $149 |
| Tri-County Electric Coop, Inc | electric cooperative | 16,203 | 16.18 | $201 |
| City of St Charles | municipal utility | 14,901 | 14.58 | $104 |
| Egyptian Electric Coop Assn | electric cooperative | 13,695 | 16.21 | $196 |
| Wayne-White Counties Elec Coop | electric cooperative | 11,792 | 16.39 | $176 |
| Eastern Illinois Elec Coop | electric cooperative | 11,001 | 17.68 | $228 |
| City of Batavia | municipal utility | 10,072 | 14.04 | $105 |
| Shelby Electric Coop, Inc | electric cooperative | 9,882 | 21.54 | $234 |
| Rock Energy Cooperative | electric cooperative | 9,421 | 14.86 | $113 |
| Menard Electric Coop | electric cooperative | 9,036 | 19.45 | $199 |
| City of Geneva | municipal utility | 8,675 | 11.68 | $90 |
| Coles-Moultrie Electric Coop | electric cooperative | 8,505 | 17.60 | $206 |
| Rochelle Municipal Utilities | municipal utility | 5,993 | 13.12 | $84 |
| City of Peru | municipal utility | 4,793 | 12.48 | $84 |
| Mt Carmel Public Utility Co | investor-owned utility | 4,337 | 19.68 | $177 |
Customers who buy power from a separate supplier
In Illinois some homes buy electricity from a retail supplier and pay their local utility only for delivery. The delivery and supply figures below each cover only part of those homes' bills, so they cannot be compared with full-service prices.
| Delivery utility | Delivery-only homes | Delivery charge (cents/kWh) |
|---|---|---|
| Commonwealth Edison Co | 733,794 | 8.89 |
| Ameren Illinois Company | 475,151 | 8.77 |
| Retail supplier | Homes supplied | Supply price (cents/kWh) |
|---|---|---|
| MC Squared Energy Services, LLC | 263,681 | 8.14 |
| Homefield Energy | 147,108 | 10.64 |
| Reliant Energy Northeast LLC | 142,167 | 11.99 |
| Constellation NewEnergy, Inc | 125,423 | 9.45 |
| Direct Energy Services | 42,984 | 11.43 |
| SmartEnergy Holdings, LLC | 38,988 | 12.51 |
| Dynegy Energy Services, LLC | 31,847 | 7.41 |
| Just Energy Solutions Inc. | 31,576 | 11.61 |
| Energy Services Providers, Inc | 30,668 | 13.28 |
| CleanChoice Energy, Inc. | 29,609 | 12.31 |
| IDT Energy, Inc. | 26,086 | 15.27 |
| Interstate Gas Supply, Inc. | 22,865 | 12.73 |
| Ambit Energy Holdings, LLC | 20,500 | 11.38 |
| Residents Energy, LLC | 19,768 | 16.36 |
| Vista Energy Marketing, L.P. | 16,763 | 14.96 |
| Nordic Energy Services, LLC | 15,715 | 13.97 |
| Spark Energy, LP | 12,842 | 19.60 |
| Energy Harbor Corp. | 11,072 | 9.95 |
| Palmco Power IL, LLC | 10,383 | 23.83 |
| XOOM Energy Illinois, LLC | 9,040 | 11.47 |
| Green Mountain Energy Company | 6,670 | 13.29 |
| Inspire Energy Holdings, LLC | 6,330 | 14.30 |
| Energy Plus Holdings LLC | 5,466 | 13.13 |
| Clearview Electric Inc. | 4,880 | 18.93 |
| Santanna Energy Services | 4,856 | 11.51 |
| ResCom Energy, LLC | 4,575 | 8.80 |
| Rushmore Energy, LLC | 4,503 | 11.98 |
| Think Energy, LLC | 4,371 | 8.81 |
| RPA Energy, Inc. | 3,968 | 17.97 |
| Eligo Energy, LLC | 3,452 | 13.99 |
| Public Power LLC | 3,377 | 11.08 |
| EcoPlus Power, LLC | 3,027 | 7.32 |
| Viridian Energy PA LLC | 2,824 | 12.51 |
| Stream Energy Illinois, LLC | 2,415 | 12.89 |
| Major Energy Electric Services | 1,993 | 21.18 |
| AEP Energy | 1,794 | 9.89 |
| Great American Power, LLC | 1,528 | 10.30 |
| Alpha Gas and Electric, LLC | 1,353 | 15.85 |
| North American Power and Gas, LLC | 1,336 | 16.03 |
Rooftop solar sold by the kilowatt-hour
Some solar companies own panels on customers' roofs and sell them the power. EIA reports these sales as behind-the-meter. The price covers only the solar power, not the grid power the home also buys.
| Company | Homes | Solar price (cents/kWh) |
|---|---|---|
| Sunrun Inc. | 38,135 | 17.02 |
| EverBright, LLC | 10,410 | 15.01 |
| Palmetto Solar, LLC | 4,103 | 13.65 |
Reliability across Illinois in 2025: the average customer was without power for 144 minutes over 0.87 interruptions, or 62 minutes excluding major storms and other major event days. This is EIA's state total for utilities reporting under any standard, covering 5,867,360 customers.
If your bill is hard to pay
The federal Low Income Home Energy Assistance Program (LIHEAP) helps with heating and cooling bills. Find your state office on the LIHEAP page. Your state utility commission handles complaints about utility billing and rates.
Sources
- US Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 and 2024 detailed data (Sales to Ultimate Customers, Reliability, Service Territory, Average Bill)
- US Energy Information Administration, Electric power sales, revenue, and energy efficiency, Form EIA-861M detailed data (sales_revenue.xlsx), monthly 2010 to August 2026
- US Energy Information Administration, Electric Power Monthly, Table 5.6.A and Table 5.6.B, average price of electricity by state (used to cross-check every state figure for August 2026)
Checked 29 October 2026. Figures for 2026 are preliminary and EIA may revise them. These are statewide averages, not the rate on your bill.