| Relationships | Role | Relationship Start | Relationship End |
| Broad Street Energy Advisors, L.L.C. | Parent | 10/23/2012 | |
| Broad Street Energy Advisors Aiv-1, L.L.C. | Parent | 10/23/2012 | |
| Wsep Edgemarc, Inc. | Subsidary | 1/25/2013 | |
| Wsep And Bridge 2012 Edgemarc Holdings, L.L.C. | Subsidary | 1/25/2013 | |
| Wsep Egypt, Inc. | Subsidary | 1/7/2016 | |
| Wsep Esv I, Inc. | Subsidary | 8/1/2016 | |
| Wsep Esv Ii, L.L.C. | Subsidary | 8/1/2016 | |
| Wsep Road Holdings Inc. | Subsidary | 6/30/2013 | 10/31/2016 |