Illinois · Cooperative
Southwestern Electric Coop Inc - (IL)
15.37¢ per kWh, bundled, EIA-861 2025. Average bill $178.24 at 1,159.9 kWh a month, across 24,414 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: 24,414, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$153.70
15.37¢/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¢ | $150.97 | 1,138.4 | 22,093 |
| 2016 | 13.25¢ | $153.42 | 1,158.0 | 22,244 |
| 2017 | 13.35¢ | $150.12 | 1,124.1 | 22,432 |
| 2018 | 13.04¢ | $161.02 | 1,234.7 | 22,620 |
| 2019 | 13.14¢ | $156.02 | 1,187.6 | 22,802 |
| 2020 | 13.25¢ | $154.05 | 1,162.8 | 23,017 |
| 2021 | 13.10¢ | $156.33 | 1,193.5 | 23,242 |
| 2022 | 12.98¢ | $156.81 | 1,208.3 | 23,557 |
| 2023 | 13.20¢ | $146.86 | 1,112.9 | 24,676 |
| 2024 | 13.68¢ | $153.82 | 1,124.2 | 24,822 |
| 2025 | 15.37¢ | $178.24 | 1,159.9 | 24,414 |
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
Bond, Clay, Clinton, Effingham, Fayette, Macoupin, Madison, Marion, Montgomery, Shelby, St Clair.
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