- Instant answersResults update as you type.
- Private by designRuns in your browser. Nothing is sent.
- Share, print or citeCopy a link with your numbers.
Electricity cost in Illinois
The average residential price in Illinois was 19.32¢ per kWh in August 2026, above the US average of 18.16¢. That ranks #18 most expensive of 51 (50 states plus DC). A year earlier (August 2025) it was 18.03¢, a change of +7.2%.
| Example | Cost at 19.32¢/kWh |
|---|---|
| 1,000 W for 1 hour (1 kWh) | $0.19 |
| 100 W running 24/7 for a month | $14.11 |
| 1,500 W for 8 hours a day for a month | $70.53 |
Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A (average residential price, August 2026, preliminary; released October 23, 2026). Your utility bill rate may differ.
Related tools
Frequently asked questions
What is the average electricity rate in Illinois?
19.32¢ per kWh for residential customers in August 2026 (EIA, preliminary).
How much does it cost to run a 1,500-watt heater 8 hours a day in Illinois?
About $70.53 a month at 19.32¢/kWh.
Is electricity in Illinois more expensive than average?
Yes: 19.32¢ vs the US average of 18.16¢ (August 2026).