Average electricity cost in Illinois
Average residential electricity rate and typical bill in Illinois. Figures come from the U.S. Energy Information Administration (EIA), 2023 annual average.
15.71cents/kWh
- Typical use
- 669 kWh/mo
- Typical bill
- $105.10/mo
The U.S. average is 16.00 cents/kWh, so Illinois sits 2% below it.
Illinois keeps its residential rate close to the national average. The state has retail choice and municipal aggregation, and a large nuclear fleet supplies much of the generation, which moderates supply prices.
Widespread natural-gas heating holds winter electricity use down, so the typical Illinois home uses fewer kilowatt-hours each month than the national average even with hot, humid summers.
Commonwealth Edison serves northern Illinois including Chicago, and Ameren Illinois covers the central and southern regions, both with delivery charges separate from the supply price.
The electricity bill calculator opens with the Illinois rate of 15.71 cents/kWh already filled in. Add your appliances and hours of use to see daily, monthly, and yearly costs.
EIA State Electricity Profiles, Illinois, 2023 annual average.
Average residential sales per customer for Illinois, derived from the same EIA dataset.
Released 2024-10-23; reviewed 2026-06-20.
National residential average over 855 kWh per month.
Source: U.S. Energy Information Administration (EIA), State Electricity Profiles, Table 8. Sales to ultimate customers, revenue, and average price by sector (2023 annual average). Reviewed 2026-06-20. View the Illinois profile.
- 1Start with the Illinois residential rate: 15.71 cents/kWh, which is close to the U.S. average of 16.00 cents/kWh.
- 2Take the typical local usage: 669 kWh per month.
- 3Multiply usage by the rate: 669 kWh x $0.1571 = $105.10 per month.
- 4Scale to a year: $105.10 x 12 = about $1,261 per year before taxes and fixed fees.
This covers energy only. Your real bill also includes fixed charges, taxes, and any plan-specific rates, which is why running your own numbers matters.
What is the average electricity rate in Illinois?
The average residential electricity rate in Illinois is 15.71 cents per kWh, close to the U.S. average of 16.00 cents/kWh. That figure comes from the U.S. Energy Information Administration's State Electricity Profiles for 2023 annual average.
How much is a typical monthly electricity bill in Illinois?
A Illinois home using about 669 kWh a month pays roughly $105.10 for energy, or about $1,261 a year before taxes and fixed charges. Your own bill depends on your usage and plan.
Why is electricity priced the way it is in Illinois?
Illinois keeps its residential rate close to the national average. The state has retail choice and municipal aggregation, and a large nuclear fleet supplies much of the generation, which moderates supply prices.
What is municipal aggregation in Illinois?
Many Illinois communities negotiate a bulk electricity supply rate on behalf of residents through municipal aggregation. If your town participates, your supply price may sit below the utility default and the statewide average, while your ComEd or Ameren delivery charge stays the same.