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
Estimated at Illinois's 15.9¢/kWh rate. Typical use is a rough guide — your actual kWh varies with climate, heating type, and habits.
| Home size | Typical monthly use | Monthly bill |
|---|---|---|
| 1-bedroom apartment | 500 kWh | $79.35 |
| 2-bedroom apartment | 750 kWh | $119.03 |
| Small house | 900 kWh | $142.83 |
| Large house | 1,400 kWh | $222.18 |
| Illinois average | 693 kWh | $109.99 |
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.