Rates by state / Illinois
Residential electricity · updated July 2026
Average electric bill in Illinois
The average Illinois home paid 18.8¢ per kWh and about $132 a month over the 12 months to July 2026, according to U.S. Energy Information Administration data. That rate is 4% above the U.S. average of 18.0¢, the 16th highest of 50 states and D.C.
Average rate
18.8¢/kWh
12 months to Jul 2026. Latest month 19.2¢.
Average bill
$132/mo
Average use × average rate
Average use
700kWh/mo
Per residential customer
1-year change
+11.4%
5 years: +44.6%
Illinois electric bills by month
What the average residential customer actually paid each month: total residential revenue ÷ customers. Source: EIA.
| Month | Avg use | Avg rate | Avg bill |
|---|---|---|---|
| July 2026 | 1,005 kWh | 19.2¢ | $193 |
| June 2026 | 718 kWh | 19.9¢ | $143 |
| May 2026 | 514 kWh | 23.9¢ | $123 |
| April 2026 | 538 kWh | 20.5¢ | $110 |
| March 2026 | 611 kWh | 18.9¢ | $115 |
| February 2026 | 719 kWh | 17.8¢ | $128 |
| January 2026 | 812 kWh | 16.4¢ | $133 |
| December 2025 | 769 kWh | 17.1¢ | $131 |
| November 2025 | 576 kWh | 18.3¢ | $105 |
| October 2025 | 576 kWh | 18.7¢ | $108 |
| September 2025 | 657 kWh | 19.1¢ | $125 |
| August 2025 | 905 kWh | 18.1¢ | $163 |
Typical bill by home size in Illinois
Monthly use of typical homes, all household sizes, priced at Illinois's average rate of 18.8¢. Source: EIA RECS 2020 and EIA retail sales.
| Home size | Typical use | Most homes | Typical bill |
|---|---|---|---|
| Under 1,000 sq ft | 370 kWh | 235–566 kWh | $70 |
| 1,000–1,499 sq ft | 531 kWh | 366–767 kWh | $100 |
| 1,500–1,999 sq ft | 665 kWh | 463–941 kWh | $125 |
| 2,000–2,999 sq ft | 781 kWh | 570–1,105 kWh | $147 |
| 3,000+ sq ft | 1,004 kWh | 728–1,443 kWh | $189 |
Summer and winter months run higher than these yearly averages. Check your own bill to compare a specific month.
Apartment electric bills in Illinois · Electric bill for one person in Illinois
What uses the most electricity in Illinois homes
Average yearly use by purpose for Illinois homes, priced at 18.8¢ per kWh. Source: EIA RECS 2020 (530 surveyed homes).
UsekWh / yr≈ $ / mo
Air conditioning1,671 (20%)$26
Everything else plugged in1,562 (18%)$24
Space heating1,269 (15%)$20
Refrigerators and freezers981 (12%)$15
Lighting622 (7%)$10
Water heating611 (7%)$10
TVs and electronics590 (7%)$9
Fans and dehumidifiers402 (5%)$6
Washer and dryer301 (4%)$5
Cooking and dishwasher293 (3%)$5
Pool and hot tub128 (2%)$2
EV charging24 (0%)$0
- 17% of Illinois homes heat mainly with electricity. They use about 10,064 kWh a year, against 8,131 kWh in homes heated another way.
Monthly rate, last 5 years
Monthly prices swing with the season because fixed charges are spread over fewer or more kWh.
How much electricity Illinois homes use
Electricity rates by utility in Illinois
Average residential revenue per kWh in 2025, largest 25 of 77 by customers. Source: EIA-861.
| Utility | Customers | Rate | Avg use / mo | 1-yr change |
|---|---|---|---|---|
| Commonwealth Edison Co | 3,753,924 | 17.7¢ | 622 kWh | +16.4% |
| Ameren Illinois Company | 1,062,810 | 16.7¢ | 882 kWh | +9.4% |
| MC Squared Energy Services, LLC | 263,681 | 17.0¢* | 801 kWh | +14.0% |
| Homefield Energy | 147,108 | 19.5¢* | 603 kWh | +16.0% |
| Reliant Energy Northeast LLC | 142,167 | 20.8¢* | 694 kWh | +7.2% |
| Constellation NewEnergy, Inc | 125,423 | 18.3¢* | 687 kWh | +0.8% |
| MidAmerican Energy Co | 73,481 | 10.0¢ | 744 kWh | 0.0% |
| City of Springfield - (IL) | 59,366 | 13.1¢ | 864 kWh | +9.5% |
| City of Naperville - (IL) | 57,225 | 14.6¢ | 769 kWh | +12.6% |
| Direct Energy Services | 42,984 | 20.3¢* | 743 kWh | +1.5% |
| SmartEnergy Holdings, LLC | 38,988 | 21.3¢* | 524 kWh | +12.7% |
| Corn Belt Energy Corporation | 34,952 | 15.6¢ | 949 kWh | -1.1% |
| Dynegy Energy Services, LLC | 31,847 | 16.2¢* | 448 kWh | +9.8% |
| Just Energy Solutions Inc. | 31,576 | 20.4¢* | 698 kWh | +8.0% |
| Energy Services Providers, Inc | 30,668 | 22.1¢* | 653 kWh | +1.8% |
| CleanChoice Energy, Inc. | 29,609 | 21.1¢* | 544 kWh | +6.2% |
| IDT Energy, Inc. | 26,086 | 24.1¢* | 562 kWh | +17.8% |
| Southwestern Electric Coop Inc - (IL) | 24,414 | 15.4¢ | 1,160 kWh | +12.4% |
| Interstate Gas Supply, Inc. | 22,865 | 21.6¢* | 613 kWh | +10.7% |
| Southeastern IL Elec Coop, Inc | 22,607 | 14.8¢ | 1,222 kWh | +2.3% |
| Ambit Energy Holdings, LLC | 20,500 | 20.2¢* | 716 kWh | +4.9% |
| Residents Energy, LLC | 19,768 | 25.2¢* | 577 kWh | +12.2% |
| Norris Electric Coop | 18,163 | 15.1¢ | 1,178 kWh | -0.1% |
| Jo-Carroll Energy, Inc | 17,278 | 20.5¢ | 727 kWh | +3.5% |
| Vista Energy Marketing, L.P. | 16,763 | 23.8¢* | 615 kWh | +10.9% |
* Energy supplier: rate adds the state's average delivery charge, so it's an estimate.
All 77 utilities in Illinois
- Tri-County Electric Coop, Inc (IL) 16.2¢
- Nordic Energy Services, LLC 22.8¢
- City of St Charles - (IL) 14.6¢
- Egyptian Electric Coop Assn 16.2¢
- Spark Energy, LP 28.4¢
- Wayne-White Counties Elec Coop 16.4¢
- Energy Harbor Corp. 18.8¢
- Eastern Illinois Elec Coop 17.7¢
- Palmco Power IL, LLC 32.7¢
- City of Batavia - (IL) 14.0¢
- Shelby Electric Coop, Inc - (IL) 21.5¢
- Rock Energy Cooperative 14.9¢
- XOOM Energy Illinois, LLC 20.3¢
- Menard Electric Coop 19.4¢
- City of Geneva - (IL) 11.7¢
- Coles-Moultrie Electric Coop 17.6¢
- Green Mountain Energy Company 22.1¢
- Inspire Energy Holdings, LLC 23.1¢
- Rochelle Municipal Utilities - (IL) 13.1¢
- Energy Plus Holdings LLC 22.0¢
- Clearview Electric Inc. 27.8¢
- Santanna Energy Services 20.3¢
- City of Peru - (IL) 12.5¢
- ResCom Energy, LLC 17.6¢
- Rushmore Energy, LLC 20.8¢
- Think Energy, LLC 17.6¢
- Mt Carmel Public Utility Co 19.7¢
- RPA Energy, Inc. 26.8¢
- Eligo Energy, LLC 22.8¢
- Public Power LLC (CT) 19.9¢
- EcoPlus Power, LLC 16.1¢
- Viridian Energy PA LLC 21.3¢
- Stream Energy Illinois, LLC 21.7¢
- Major Energy Electric Services 30.0¢
- AEP Energy 18.7¢
- Great American Power, LLC 19.1¢
- Alpha Gas and Electric, LLC 24.7¢
- North American Power and Gas, LLC 24.9¢
- American Power & Gas 23.2¢
- Pure Energy USA, LLC 38.1¢
- Retail Energy Solutions, LLC 23.2¢
- Atlantic Energy LLC 19.3¢
- MPower Energy NJ LLC 27.0¢
- Park Power LLC 25.1¢
- SFE Energy Illinois, Inc. 20.1¢
- Greenlight Energy Inc. 21.9¢
- ENGIE Power & Gas LLC 21.6¢
- Tomorrow Energy Corp. 33.8¢
- South Bay Energy Corp. 24.4¢
- Titan Gas LLC 17.0¢
- Scenic Rivers Energy Coop 15.1¢
- Horizon Power and Light, LLC 32.2¢
Illinois electricity: common questions
- What is the average electric bill in Illinois?
- The average Illinois household pays about $132 a month for electricity, based on 700 kWh of use at 18.8¢ per kWh over the 12 months to July 2026 (U.S. Energy Information Administration data).
- How much does electricity cost per kWh in Illinois?
- Residential electricity in Illinois averaged 18.8¢ per kWh over the 12 months to July 2026, and 19.2¢ in July 2026 alone. That is 4% above the U.S. average of 18.0¢, the 16th highest of the 50 states and D.C. These averages spread fixed service charges and surcharges over each kWh. Sales taxes added to bills may not be included.
- When are electric bills highest in Illinois?
- In the last 12 months, the average Illinois bill peaked in July 2026 at $193 and was lowest in November 2025 at $105.
- How much electricity does a 1,500–1,999 sq ft home use in Illinois?
- A typical Illinois home of 1,500–1,999 square feet uses about 665 kWh a month, and most use between 463 and 941 kWh. At the state's average rate that is roughly $125 a month. Based on EIA's Residential Energy Consumption Survey (RECS 2020).
- Are electricity rates going up in Illinois?
- Illinois's average residential rate changed +11.4% compared with the previous 12 months and +44.6% over five years.
- What uses the most electricity in Illinois homes?
- In a typical Illinois home, air conditioning uses the most electricity (about 1,671 kWh a year, 20% of the total), followed by everything else plugged in (18%) and space heating (15%). Homes heated with electricity use about 10,064 kWh a year, compared with 8,131 kWh for homes heated another way. Source: EIA RECS 2020.
- How do I know if my Illinois electric bill is too high?
- Compare two things: how many kWh you used against similar homes, and what you paid per kWh against the state average. The free bill check on AverageElectricBill.com does both from the numbers on your bill, adjusting for the month and your home's size.