Illinois · Retail Power Marketer
Green Mountain Energy Company
13.29¢ per kWh, energy only, EIA-861 2025. Average bill $74.11 at 557.7 kWh a month, across 6,670 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 energy only service. Customer count: 6,670, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$132.90
13.29¢/kWh × 1,000 kWh. Energy only 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 | 10.99¢ | $66.45 | 604.9 | 22,564 |
| 2016 | 10.54¢ | $67.47 | 640.2 | 19,522 |
| 2017 | 9.96¢ | $60.00 | 602.3 | 25,322 |
| 2018 | 12.79¢ | $78.65 | 614.9 | 21,632 |
| 2019 | 13.35¢ | $74.74 | 559.8 | 16,757 |
| 2020 | 11.97¢ | $69.77 | 583.0 | 15,478 |
| 2021 | 12.94¢ | $75.71 | 585.2 | 11,895 |
| 2022 | 13.87¢ | $79.72 | 574.9 | 9,647 |
| 2023 | 13.20¢ | $69.54 | 526.9 | 8,904 |
| 2024 | 12.56¢ | $67.39 | 536.6 | 7,910 |
| 2025 | 13.29¢ | $74.11 | 557.7 | 6,670 |
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
EIA's 2025 service-territory file does not list counties for this utility.
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