| 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 | Clarendon, PA 16313-4107 | 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 2025 |
| 6 | Indiana CC | Indiana, PA 15701-1314 | Gas Operator | Dec 2025 |
| 7 | Inflection Energy (Pa) LLC | Montoursville, PA 17754-9702 | Gas Operator | Mar 2025 |
| 8 | Inr Opr LLC | Morgantown, WV 26508-9201 | Gas Operator | Dec 2025 |
| 9 | Integrity Funding Sys Inc | Lancaster, PA 17602-1933 | Gas Operator | Dec 2007 |
| 10 | Interstate Gas MKT Inc | Indiana, PA 15701 | Oil & Gas Operator | Dec 2018 |
| 11 | Iron City Wells LLC | Saxonburg, PA 16056-8802 | Gas Operator | Dec 2025 |
| 12 | Iron Pennsylvania Land LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2025 |
| 13 | Iroquois Ave LLC | Edinboro, PA 16412 | Gas Operator | Dec 2025 |
| 14 | Isaacs Scott J Jr | Butler, PA 16002-0059 | Gas Operator | Nov 2025 |
| 15 | Iseman William R | Ford City, PA 16226-1488 | Gas Operator | Dec 2025 |
| 16 | Itl Corp | Beachwood, OH 44122-5821 | Gas Operator | Dec 2017 |