| Cenergy, LLC | Contractor | | 2 | |
| Cenex Pipeline LLC | Owner/operator | Laurel, MT | 4 | 3 |
| Centana Energy Corp. | Owner/operator | | 1 | |
| Centana Interstate Pipeline LLC | Owner/operator | | | 1 |
| Centana Intrastate Pipeline, LLC | Owner/operator | | | 123 |
| Centauri Technologies, LP | Owner/operator | Pasadena, TX | | |
| Centennial Resource Production, LLC | Owner/operator | | | |
| Center Point Energy Arkla | Owner/operator | | | |
| Center Point Energy Entex | Owner/operator | | | |
| Center Point Energy Entex-Arkansas Gas | Owner/operator | | | |
| Centerpoint Energy | Owner/operator | | 1 | 1 |
| Centerpoint Energy - Arkansas Facilities | Owner/operator | | | |
| Centerpoint Energy - Entex Transmission Company | Owner/operator | | | |
| Centerpoint Energy - Illinois Gas Transmission Company | Owner/operator | | | |
| Centerpoint Energy - Mississippi River Gas Transmission Corp | Owner/operator | | | |
| Centerpoint Energy - Mississippi River Transmission Corporat | Owner/operator | | 1 | |
| Centerpoint Energy Arkansas Gas | Owner/operator | | | |
| Centerpoint Energy Arkla | Owner/operator | | | |
| Centerpoint Energy Arkla - Oklahoma Transmission | Owner/operator | | | |
| Centerpoint Energy Entex | Owner/operator | | | |
| Centerpoint Energy Entex - Louisiana Transmission | Owner/operator | | | |
| Centerpoint Energy Entex - Mississippi Transmission | Owner/operator | | | |
| Centerpoint Energy Field Services | Owner/operator | | | |
| Centerpoint Energy Gas Transmission | Owner/operator | | 23 | |
| Centerpoint Energy Intra P/l,llc | Owner/operator | | | 8 |
| Centerpoint Energy Intrastate Pipeline | Owner/operator | Houston, TX | | 1 |
| Centerpoint Energy Minnegasco | Owner/operator | | | |
| Centerpoint Energy Pipeline Service For Florida Power & Light, Lamar Power Partn | Owner/operator | | | |
| Centerpoint Energy Pipeline Services | Owner/operator | | | |
| Centerpoint Energy Pipeline Services For Acme Brick Co. | Owner/operator | | | |
| Centerpoint Energy Pipeline Services For International Paper-Texarkana Mill | Owner/operator | | | |
| Centerpoint Energy Pipeline Services For Renovar Arlington Ltd. | Owner/operator | | | |
| Centerpoint Energy Pipeline Services For Tractebell-Ennis | Owner/operator | | | |
| Centerpoint Energy Pipeline Services For Wise-Fuel Pipeline, Inc. | Owner/operator | | | |
| Centerpoint Energy Resources Corp, Dba Centerpoint Energy Minnesota Gas | Owner/operator | Houston, TX | | 1 |
| Centerpoint Energy Resources Corp. | Owner/operator | Houston, TX | | 1 |
| Centerpoint Energy Resources Corp., D/b/a Centerpoint Energy Minnesota Gas | Owner/operator | | | |
| Centerpoint Energy Resources Corp., Dba | Owner/operator | Houston, TX | | 1 |
| Centra Pipeline Minnesota Inc | Owner/operator | London, ONTARIO | | 1 |
| Centra Pipline Minnesota Inc. | Owner/operator | | | |
| Central City Gas System Dept | Owner/operator | Central City, NE | | 1 |
| Central Crude Inc | Owner/operator | Houston, TX | 1 | 1 |
| Central Florida Gas | Owner/operator | Yulee, FL | | 1 |
| Central Florida Pipeline Corp | Owner/operator | Houston, TX | | 1 |
| Central Hudson Gas & Electric Corp | Owner/operator | Poughkeepsie, NY | | 1 |
| Central Illinois Light Co | Owner/operator | | | |
| Central Iowa Power Cooperative | Owner/operator | Des Moines, IA | | 1 |
| Central Louisiana Energy Pipeline Co (clepco) | Owner/operator | Jena, LA | | 2 |
| Central New York Oil & Gas Company, LLC | Owner/operator | Houston, TX | 5 | 1 |
| Central Oklahoma Oil & Gas Co. | Owner/operator | | | |