| 1 | Idc Energy Corp | Warren, PA 16365-0792 | Oil & Gas Operator | Dec 2021 |
| 2 | Igas Corp | Charlottesville, VA 22905-5246 | Gas Operator | Dec 2000 |
| 3 | Il Geer & Sons Partnership | | Oil & Gas Operator | Dec 2013 |
| 4 | Imod Oil Prod LLC | Pleasantville, PA 16341-0149 | Oil & Gas Operator | Dec 2009 |
| 5 | Indian Hill Gas Co Inc | Fayette City, PA 15438-1203 | Oil & Gas Operator | Dec 2022 |
| 6 | Inflection Energy (Pa) LLC | Montoursville, PA 17754-9702 | Gas Operator | Jan 2024 |
| 7 | Inr Opr LLC | Morgantown, WV 26508-9201 | Gas Operator | Jan 2024 |
| 8 | Interstate Gas MKT Inc | Indiana, PA 15701 | Oil & Gas Operator | Dec 2018 |
| 9 | Iron Pennsylvania Land LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2023 |