Illinois · Cooperative
Tri-County Electric Coop, Inc (IL)
16.18¢ per kWh, bundled, EIA-861 2025. Average bill $200.77 at 1,241.2 kWh a month, across 16,203 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: 16,203, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$161.80
16.18¢/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 | 14.16¢ | $174.50 | 1,232.7 | 15,745 |
| 2016 | 14.14¢ | $175.36 | 1,239.8 | 15,743 |
| 2017 | 14.59¢ | $172.42 | 1,181.5 | 15,815 |
| 2018 | 14.29¢ | $185.68 | 1,299.2 | 15,902 |
| 2019 | 14.46¢ | $180.42 | 1,247.4 | 15,929 |
| 2020 | 14.33¢ | $172.07 | 1,201.2 | 15,983 |
| 2021 | 14.04¢ | $170.11 | 1,211.6 | 16,117 |
| 2022 | 14.13¢ | $176.92 | 1,251.9 | 16,159 |
| 2023 | 15.48¢ | $180.47 | 1,165.9 | 16,186 |
| 2024 | 16.04¢ | $189.61 | 1,181.9 | 16,197 |
| 2025 | 16.18¢ | $200.77 | 1,241.2 | 16,203 |
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
Clay, Clinton, Franklin, Hamilton, Jefferson, Marion, Perry, St Clair, Washington, Wayne.
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