| Enbridge Energy Pipeline South Texas Expansion Project | Enbridge Energy Pipeline Co | TX | In service 2018 | |
| Enbridge Interconnect Project | Trunkline Gas Company, LLC | TX | Started 2008 | |
| Enbridge Marquez Plant Line | Enbridge Energy Pipeline Co | TX | In service 2007 | |
| Enbridge Pipeline Louisiana Intrastate coastal use permit P20051569 pipeline | Enbridge Pipeline Louisiana Intrastate, LLC | LA | | |
| Enbridge Pipelines coastal use permit P20021122 pipeline | Enbridge Pipelines, Inc. | LA | | |
| Enbridge SA Loop | Enbridge | TN | | |
| Endymion Oil Pipeline coastal use permit P20011269 pipeline | Endymion Oil Pipeline Company, LLC | LA | | |
| Energy Corporation of America PF10-15 | Energy Corporation Of America | | | |
| Energy Quest Ii coastal use permit P20090427 pipeline | Energy Quest Ii, LLC | LA | | |
| Energy Transfer coastal use permit P20200603 pipeline | Energy Transfer | LA | | |
| Energy Xxi Gulf Coast coastal use permit P20051076 pipeline | Energy Xxi Gulf Coast, Inc. | LA | | |
| Energy Xxi Gulf Coast coastal use permit P20071685 pipeline | Energy Xxi Gulf Coast, Inc. | LA | | |
| Energy Xxi Gulf Coast coastal use permit P20071847 pipeline | Energy Xxi Gulf Coast, Inc. | LA | | |
| Energy Xxi Gulf Coast coastal use permit P20090306 pipeline | Energy Xxi Gulf Coast, Inc. | LA | | |
| Energy Xxi Gulf Coast coastal use permit P20090821 pipeline | Energy Xxi Gulf Coast, Inc. | LA | | |
| Energy Xxi Onshore coastal use permit P20131788 pipeline | Energy Xxi Onshore, LLC | LA | | |
| Energy Xxi coastal use permit P20070518 pipeline | Energy Xxi | LA | | |
| Energy Xxi coastal use permit P20100689 pipeline | Energy Xxi | LA | | |
| Energy coastal use permit P20040755 pipeline | Energy Partners, LTD | LA | | |
| Energy coastal use permit P20050549 pipeline | Energy Partners, LTD | LA | | |
| Energy coastal use permit P20051565 pipeline | Energy Partners, LTD | LA | | |
| Energy coastal use permit P20060263 pipeline | Energy Partners, LTD | LA | | |
| Energy coastal use permit P20140179 pipeline | Energy Partners, LTD | LA | | |
| Engle to Norris | | OH | | |
| Enhancement by Compression Project | Iroquois Gas Transmission System, L.P. | CT, NY | | |
| Enlink Formosa Distribution Pipeline Project | Enlink Midstream | LA | | |
| Enlink Midstream coastal use permit P20150611 pipeline | Enlink Midstream | LA | | |
| Enlink Midstream coastal use permit P20151300 pipeline | Enlink Midstream | LA | | |
| Enlink Midstream coastal use permit P20190932 pipeline | Enlink Midstream | LA | | |
| Enstor Grama Ridge Storage & Transportation CP10-42 | Enstor Grama Ridge Storage & Transportation, LLC | NM | | |