Illinois · Municipal
City of St Charles - (IL)
14.58¢ per kWh, bundled, EIA-861 2025. Average bill $103.61 at 710.8 kWh a month, across 14,901 customers on that row.
Illinois averaged 17.67¢/kWh and $126.59 a month. The United States averaged 17.23¢/kWh and $150.68. State and national figures come from EIA's Average Bill file.
Revenue divided by sales, EIA-861 Sales to Ultimate Customers, 2025, released October 7, 2026. Texas wires utilities come from the Delivery Companies file. The price and bill use bundled service. Customer count: 14,901, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$145.80
14.58¢/kWh × 1,000 kWh. Bundled residential average, EIA-861 2025. The customer charge is already folded into this average, so it stands beside a tariff total rather than being added to it.
Annual history
| Year | ¢/kWh | Avg. bill | Avg. kWh | Customers |
|---|---|---|---|---|
| 2015 | 13.26¢ | $99.75 | 752.4 | 13,266 |
| 2016 | 13.77¢ | $106.08 | 770.2 | 13,305 |
| 2017 | 14.18¢ | $102.44 | 722.2 | 13,335 |
| 2018 | 14.32¢ | $108.70 | 759.2 | 13,563 |
| 2019 | 14.62¢ | $104.67 | 715.9 | 13,714 |
| 2020 | 14.62¢ | $108.55 | 742.5 | 13,769 |
| 2021 | 14.60¢ | $108.85 | 745.4 | 13,915 |
| 2022 | 14.68¢ | $105.30 | 717.1 | 13,985 |
| 2023 | 14.80¢ | $100.90 | 681.8 | 14,070 |
| 2024 | 15.37¢ | $102.65 | 668.1 | 14,181 |
| 2025 | 14.58¢ | $103.61 | 710.8 | 14,901 |
EIA-861, 2015–2025, using the same service type as the 2025 figure. A blank year means that service was not in the file.
Counties
DuPage, Kane.
EIA-861 Service Territory, 2025. A listed county is the county EIA recorded. It does not mean every address in the county is served. Open this utility in the bill calculator · Rate history tool