Average Electric Bill in Illinois
Homes in Illinois pay an average $126.59 a month for electricity, about $1,519 a year. That ranks 37th of 51 and is $24.09 less than the US average of $150.68.
Why Illinois's bill is lower
The lower bill is mostly about usage. At the US price, Illinois's usage would make the bill $123.37; at US-average usage, Illinois's price would make it $154.44.
- Homes use 716 kWh a month, 158 kWh less than the US average.
- Power costs 17.67¢ per kWh, 0.44¢ more than the US average.
- 5,423,184 residential electricity customers.
- 2026 so far: prices through August average 19.23¢ per kWh, 10.3% higher than the same months of 2025. At that price, the 2025 average usage would cost about $139.58 a month (our estimate).
About these numbers
Average bill = residential electricity revenue ÷ residential customers ÷ 12, from the US Energy Information Administration (2025, forms EIA-861, 861S and 861U). The 2026 price is from EIA's Electric Power Monthly, Table 5.6.B. The average bill is an average across all homes in the state, so individual bills vary widely around it. Full methodology.
Cite: Home Stats Data, "Average Electric Bill in Illinois," https://homestatsdata.com/utility-bills/average-electric-bill/illinois/