| Constellation Energy Generation | Constellation | 39.894 | -88.981 | 197.58 |
| Ameren | Statewide | 39.97712 | -89.20898 | 225 |
| Ameren | Ameren Generating | 38.67227 | -90.16983 | 1 |
| Ameren | AmerenIllinois | 38.867 | -89.154 | 128.06 |
| Commonwealth Edison (Northern IL) | Commonwealth Edison - Zone 16 | 41.641 | -88.689 | 84.28 |
| Touchstone Energy Cooperatives | Illinois Cooperative Association/Cleartalk -- Statewide / Misc. Areas | 39.97712 | -89.20898 | 225 |
| Touchstone Energy Cooperatives | Dairyland Power Cooperative | 43.639 | -90.851 | 190.6 |
| Touchstone Energy Cooperatives | Eastern Illinois Electric Cooperative | 40.43 | -87.951 | 46 |
| Touchstone Energy Cooperatives | Egyptian Electric Coop Association | 38.23387 | -89.45618 | 55 |
| Touchstone Energy Cooperatives | Illinois Rural Electric Cooperative | 39.438 | -90.574 | 44 |
| Touchstone Energy Cooperatives | MJM Electric Cooperative (Carlinville) | 39.209 | -89.838 | 41.14 |
| Touchstone Energy Cooperatives | Norris Electric Cooperative | 38.917 | -88.38 | 55 |
| Touchstone Energy Cooperatives | Rural Electric Convenience Cooperative (Auburn) | 39.629 | -89.536 | 23.55 |
| Touchstone Energy Cooperatives | Southern Illinois Electric Cooperative (SIEC) | 37.477 | -88.868 | 37.16 |
| Touchstone Energy Cooperatives | Southwestern Electric Cooperative | 38.816 | -89.602 | 27.54 |
| Touchstone Energy Cooperatives | Soyland Power Cooperative | 39.808 | -88.216 | 18 |
| Touchstone Energy Cooperatives | Tri-County Electric Cooperative | 38.471 | -89.136 | 35.86 |
| Centerpoint Energy (of Louisiana) | MetroEast St. Louis | 38.743 | -89.883 | 26.55 |
| Water | Rend Lake Conservancy District (Southern IL) | 38.111 | -88.96 | 9.77 |
| Miscellaneous Utilities | Country Mark Pipeline | 38.128 | -88.216 | 32.95 |
| Miscellaneous Utilities | Nicor (formerly Northern IL Gas Company) (Aurora) | 41.749 | -88.168 | 39.78 |
