| Cago Inc | Owner/operator | | | 1 |
| Caiman Eastern Midstream, LLC | Owner/operator | Dallas, TX | | 1 |
| Cal-Maine Foods | Owner/operator | | | |
| Calais LNG Project Company, LLC | Owner/operator | | | |
| Calcasieu Refining Company | Owner/operator | Lake Charles, LA | | 2 |
| Caledonia Energy Partners, LLC | Owner/operator | Houston, TX | 2 | 2 |
| Calera Gathering LLC | Owner/operator | Montevallo, AL | | 1 |
| Calgas LLC | Owner/operator | Houston, TX | | 2 |
| Calgon Carbon Corporation | Owner/operator | Bay ST Louis, MS | | 1 |
| Calias LNG Project Company LLC | Owner/operator | | | |
| Caliber Bear Den Interconnect LLC | Owner/operator | Highlands Ranch, CO | 1 | 1 |
| Caliber Midstream | Owner/operator | | | 1 |
| Caliber Midstream North Dakota LLC | Owner/operator | | | 1 |
| Caliber Midstream Partners, L.P. | Owner/operator | | 2 | |
| Caliber North Dakota LLC | Owner/operator | Highlands Ranch, CO | 1 | 5 |
| Caliber Spring Creek LLC | Owner/operator | Highlands Ranch, CO | | 1 |
| California Gas Gathering Inc | Owner/operator | Rancho Cordova, CA | | 1 |
| California Resources Central Valley | Owner/operator | Bakersfield, CA | | 2 |
| California Resources Corporation | Owner/operator | | | 1 |
| California Resources Elk Hills, LLC | Owner/operator | Bakersfield, CA | | 3 |
| California Resources Ventura Basin | Owner/operator | Bakersfield, CA | | 2 |
| Caljet | Owner/operator | | | 1 |
| Callidus Technologies By Honeywell | Owner/operator | Tulsa, OK | | 1 |
| Callidus Technologies Inc | Owner/operator | | | |
| Callon (permian) LLC | Owner/operator | Houston, TX | | 1 |
| Callon Offshore Production, Inc | Owner/operator | | 1 | |
| Callon Petroleum Co. | Owner/operator | | | |
| Calnev Pipeline Co | Owner/operator | Houston, TX | | 1 |
| Calnrg Operating, LLC | Owner/operator | Ventura, CA | | 2 |
| Calpine Natural Gas LP | Owner/operator | | | |
| Calpine South Point Energy CTR | Owner/operator | | | |
| Calpine Texas Pipeline LP | Owner/operator | Rio Vista, CA | | 11 |
| Calumet Cotton Valley Refining, Llc. | Owner/operator | Indianapolis, IN | | 1 |
| Calumet Lubricants Co., L.p. | Owner/operator | | | |
| Calumet Montana Refining, LLC | Owner/operator | Great Falls, MT | | 1 |
| Calumet Princeton Refining, LLC | Owner/operator | Indianapolis, IN | | 1 |
| Calumet San Antonio Refining, LLC | Owner/operator | Brooks City Base, TX | | 1 |
| Calumet Shreveport Fuels, LLC | Owner/operator | | | |
| Calumet Shreveport Refining, LLC | Owner/operator | Indianapolis, IN | | 1 |
| Calumet Superior LLC | Owner/operator | | | |
| Calypso U.S. Pipeline, LLC | Owner/operator | | 1 | |
| Calyx Energy III LLC | Owner/operator | | | 1 |
| Cambria Asphalt | Owner/operator | Lockport, NY | | 1 |
| Cambrian Energy/ Southtex Ft. Smith Treaters | Owner/operator | McKinney, TX | | 1 |
| Cameron Gas Co | Owner/operator | | | |
| Cameron Highway Oil Pipeline Company | Owner/operator | | 1 | |
| Cameron Interstate Pipeline, LLC | Owner/operator | Houston, TX | 4 | 1 |
| Cameron LNG Terminal, LLC | Owner/operator | | 1 | |
| Cameron Lng, LLC | Owner/operator | Houston, TX | 5 | 1 |
| Camino Natural Resources, LLC | Owner/operator | Denver, CO | | 1 |