Average Electric Bill in Illinois (2026)
The average residential electric bill in Illinois is $109.99 per month (EIA, 2024 annual avg), 23% below the U.S. average, #45 of 51 states. That reflects an average of 693 kWh used per month at Illinois's rate of 15.9¢/kWh. See the breakdown by home size and estimate your own bill below.
$109.99
#45 of 51 · EIA, 2024 annual avg
693 kWh
per residential customer
15.9¢/kWh
23% below the U.S. average
Average electric bill in Illinois by home size
Priced at Illinois's 15.9¢/kWh rate, with each home size scaled to Illinois's own average household use of 693 kWh a month rather than the national 863 kWh. Climate and heating type move usage as much as the rate does. Still a guide: your actual kWh depends on your home and habits. National figures by home size.
| Home size | Typical monthly use | Monthly bill |
|---|---|---|
| 1-bedroom apartment | 402 kWh | $63.80 |
| 2-bedroom apartment | 602 kWh | $95.54 |
| Small house | 723 kWh | $114.74 |
| Large house | 1,124 kWh | $178.38 |
| Illinois average | 693 kWh | $109.99 |
Find what drives your Illinois bill
Rates and averages explain the price of a kilowatt-hour, not how many you use. A plug-in energy meter logs what one corded 120 V appliance really draws over a week. A whole-home monitor logs every circuit at once, so the biggest loads on your own bill show up by name. Its sensors clip on inside the panel, which is work for an electrician if that isn't you.
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Plug-in power meter
P3 International Kill A Watt P4400
Best for: Measuring what one plug-in appliance really uses
Whole-home energy monitor
Emporia Vue 3 Home Energy Monitor (16 circuit sensors)
Best for: Measuring hardwired and 240 V loads, or every circuit at once
Estimate your Illinois electric bill
Add up your appliances and usage for a tailored monthly estimate.
Estimated bill
$210/mo
- Total usage
- 1,200 kWh/mo
- Yearly bill
- $2,517
What drives the bill
- Heating & cooling$65.92 33%
- Water heating$41.20 21%
- EV charging$49.44 25%
- Appliances, lighting & other$41.20 21%
- Fixed charge$12.00
Estimate from your major loads. The rate and fixed charge are printed on your bill: heating/cooling and water heating usually dominate, so start there for the biggest impact.
Frequently asked questions
Average bill by utility in Illinois
The state average blends every provider; what you pay depends on your utility.
Nearby states
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