Illinois · Retail Power Marketer
Constellation NewEnergy, Inc
9.46¢ per kWh, energy only, EIA-861 2025. Average bill $65.31 at 690.7 kWh a month, across 99,924 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: 99,924, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$94.60
9.46¢/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 | 7.03¢ | $53.02 | 753.9 | 234,063 |
| 2016 | 7.03¢ | $58.13 | 827.3 | 75,378 |
| 2017 | 6.91¢ | $53.51 | 773.9 | 113,207 |
| 2018 | 6.93¢ | $57.67 | 832.1 | 146,559 |
| 2019 | 6.97¢ | $51.86 | 744.4 | 212,826 |
| 2020 | 7.69¢ | $58.18 | 756.9 | 123,748 |
| 2021 | 7.75¢ | $59.47 | 767.6 | 86,718 |
| 2022 | 7.64¢ | $61.63 | 806.5 | 46,834 |
| 2023 | 10.74¢ | $81.54 | 759.4 | 190,859 |
| 2024 | 10.24¢ | $74.09 | 723.4 | 199,367 |
| 2025 | 9.46¢ | $65.31 | 690.7 | 99,924 |
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