| 1 | Alden Aurora Gas Co., Inc. | Alden, NY 14004 | Gas Operator | Dec 2017 |
| 2 | Byron-Bergen Central School | | Gas Operator | Dec 2011 |
| 3 | Clover Oil & Gas Co. | | Gas Operator | Dec 2000 |
| 4 | D. C. Page Farms, Inc | Leroy, NY 14482 | Gas Operator | Dec 2017 |
| 5 | Empire Energy E & P LLC | Wichita, KS 67203 | Oil & Gas Operator | Jun 2018 |
| 6 | Empire Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 1997 |
| 7 | Frey Well Drilling, Inc. | Alden, NY 14004 | Gas Operator | Dec 2016 |
| 8 | GFS Energy, Inc. | Shinglehouse, PA 16748 | Oil & Gas Operator | Dec 2017 |
| 9 | Laben, David Glenn & Janice W. | Darien Center, NY 14040 | Gas Operator | Dec 2017 |
| 10 | Le Roy Central School | Le Roy, NY 14482 | Gas Operator | Dec 2017 |
| 11 | Lenape Resources, Inc. | Alexander, NY 14005 | Oil & Gas Operator | Dec 2017 |
| 12 | Monroe County Water Authority | Rochester, NY 14612 | Gas Operator | Dec 2017 |
| 13 | National Fuel Gas Supply Corp. | Williamsville, NY 14221 | Gas Operator | Dec 2010 |
| 14 | New York Gas & Oil Co, Inc. | | Gas Operator | Dec 2014 |
| 15 | Pan Energy Company, Inc. | Orchard Park, NY 14127 | Oil & Gas Operator | Dec 2017 |
| 16 | Pembroke Central School District | Corfu, NY 14036 | Gas Operator | Dec 2017 |
| 17 | PPP Future Development, Inc. | Alexander, NY 14005 | Oil & Gas Operator | Dec 2017 |
| 18 | Reserve Gas Co., Inc. | Alden, NY 14004 | Gas Operator | Dec 2017 |
| 19 | Seneca Resources Corporation | Bakersfield, CA 93311-2487 | Oil & Gas Operator | Jul 2018 |
| 20 | Sierra Energy, Inc. | North Collins, NY 14111 | Oil & Gas Operator | Dec 2017 |
| 21 | Subsea Oil & Gas Inc | Elma, NY 14059 | Oil & Gas Operator | Dec 2017 |
| 22 | Symbol Oil Corp. | Elma, NY 14059 | Gas Operator | Dec 2017 |
| 23 | U.S. Energy Development Corp | Arlington, TX 76011 | Oil & Gas Operator | Oct 2018 |
| 24 | United States Gypsum Co. | Oakfield, NY 14125 | Gas Operator | Dec 2017 |
| 25 | Unknown | Houston, TX 77254 | Oil & Gas Operator | Dec 2014 |