Average electric bill in Illinois
The average home in Illinois paid $126.59 a month for electricity in 2025: 716 kWh a month at 17.67¢ per kWh (EIA). That is $24.09 less than the U.S. average of $150.68, rank 37 of 51 from the highest. In August 2026, the average price for homes in Illinois was 19.32¢ per kWh, 1.29¢ higher than in August 2025.
- Average bill, 2025
- $126.59
- a month · U.S. $150.68
- Average use
- 716 kWh
- a month · U.S. 874 kWh
- Price, August 2026
- 19.32¢
- per kWh · +7.2% from August 2025
- Rank, highest bill
- 37 of 51
- price rank 17, use rank 35
Illinois electricity prices now
| Period | Illinois | United States |
|---|---|---|
| August 2026 | 19.32¢ | 18.16¢ |
| August 2025 | 18.03¢ | 17.57¢ |
| January to August 2026 | 19.23¢ | — |
| Year 2025 (EIA-861) | 17.67¢ | 17.23¢ |
What the average Illinois home's electricity costs today
The bill for 716 kWh (the Illinois average) in a 30-day November 2026 billing month, on the main residential rate plan of each utility, at the rates in effect on November 2, 2026. Taxes and city fees are not included.
| Utility | Rate plan | Bill |
|---|---|---|
| Ameren Illinois | DS-1Residential Delivery Service, with Rider BGS (BGS-1) supply | $136.75 |
Average bill by utility in Illinois
Homes that buy delivery and power from the same company, in 2025 (EIA-861). The largest 15 of 26 companies by number of homes.
| Company | Homes | kWh a month | Price per kWh | Average bill |
|---|---|---|---|---|
| Commonwealth Edison CoInvestor Owned | 3,020,130 | 606 | 17.71¢ | $107.32 |
| Ameren Illinois CompanyInvestor Owned | 587,659 | 888 | 16.70¢ | $148.32 |
| Adjustment 2025, estimated by EIA | 107,994 | 1,553 | 17.03¢ | $264.39 |
| MidAmerican Energy CoInvestor Owned | 73,481 | 744 | 9.99¢ | $74.33 |
| City of Springfield - (IL)Municipal | 59,366 | 864 | 13.09¢ | $113.16 |
| City of Naperville - (IL)Municipal | 57,225 | 769 | 14.61¢ | $112.32 |
| Corn Belt Energy CorporationCooperative | 34,952 | 949 | 15.59¢ | $147.98 |
| Southwestern Electric Coop Inc - (IL)Cooperative | 24,414 | 1,160 | 15.37¢ | $178.24 |
| Southeastern IL Elec Coop, IncCooperative | 22,607 | 1,222 | 14.80¢ | $180.79 |
| Norris Electric CoopCooperative | 18,163 | 1,178 | 15.06¢ | $177.38 |
| Jo-Carroll Energy, IncCooperative | 17,278 | 727 | 20.49¢ | $148.91 |
| Tri-County Electric Coop, Inc (IL)Cooperative | 16,203 | 1,241 | 16.18¢ | $200.77 |
| City of St Charles - (IL)Municipal | 14,901 | 711 | 14.58¢ | $103.61 |
| Egyptian Electric Coop AssnCooperative | 13,695 | 1,208 | 16.21¢ | $195.84 |
| Wayne-White Counties Elec CoopCooperative | 11,792 | 1,074 | 16.39¢ | $176.00 |
kWh by month in Illinois
The average kWh of a Illinois home in each month of 2020, from EIA's Residential Energy Consumption Survey. Homes used the most in July (1,090 kWh) and the least in October (534 kWh).
| Month | kWh | Bar |
|---|---|---|
| January | 725 | |
| February | 666 | |
| March | 610 | |
| April | 549 | |
| May | 602 | |
| June | 833 | |
| July | 1,090 | |
| August | 927 | |
| September | 606 | |
| October | 534 | |
| November | 570 | |
| December | 741 |
Your own bill
Your bill depends on your utility, your rate plan and your kWh. Open the calculator of your utility for the exact bill with the official tariff: see electric rates in Illinois. To compare a supplier offer, see the Illinois price to compare by utility. For a smaller home, see the average electric bill of an apartment. All states: average electric bill by state.
About the data
- Average bill, kWh and price of 2025: EIA-861, all homes in the state and each company that sells delivery and power together. The values include all charges and taxes that the companies report as revenue.
- Monthly price: EIA Electric Power Monthly, Table 5.6.A and Table 5.6.B.
- kWh by month: EIA 2020 Residential Energy Consumption Survey, Table CE8.5.
- Bills at each utility: our calculation with the official tariff, the same as the calculator of each utility.
What is the average electric bill in Illinois?
$126.59 a month in 2025, for 716 kWh a month, from the EIA-861 data of the U.S. Energy Information Administration. The U.S. average was $150.68.
How much is electricity per kWh in Illinois?
19.32¢ per kWh for homes in August 2026 (18.03¢ in August 2025), and 19.23¢ on average from January to August 2026, with all charges (EIA Electric Power Monthly). The U.S. average was 18.16¢ in August 2026.
When are electric bills highest in Illinois?
In EIA's 2020 survey, homes in Illinois used the most electricity in July (1,090 kWh on average) and the least in October (534 kWh).
What does the average Illinois home's electricity cost at each utility?
For 716 kWh in a November 2026 billing month, from $136.75 (Ameren Illinois) to $136.75 (Ameren Illinois) on the utilities on this site, before taxes.