| Relationships | Role | Relationship Start | Relationship End |
| Broad Street Energy Advisors Aiv-1, L.L.C. | Parent | 8/16/2012 | |
| Wsep Offshore & Offshore Holding - B Hydroedge Inc. | Subsidary | 8/16/2012 | |
| Wsep Edgemarc, Inc. | Subsidary | 1/25/2013 | |
| Wsep Esv I, Inc. | Subsidary | 8/1/2016 | |
| Wsep Road Holdings Inc. | Subsidary | 9/26/2012 | 10/31/2016 |
| Wsep Offshore & Offshore Holding - B Eagle Wing Inc. | Subsidary | 9/7/2012 | 8/31/2016 |