Electric utilities in Illinois
Utilities with at least 100,000 residential customers on a single 2025 filing. Sorted by average monthly bill. A bundled filing and a delivery filing for the same company are not added together.
| Utility | Filing | ¢/kWh | Avg. monthly bill | Customers |
|---|---|---|---|---|
| Ameren Illinois Company | Bundled | 16.7 | $148 | 587,659 |
| Commonwealth Edison Co | Bundled | 17.7 | $107 | 3,020,130 |