| Relationships | Role | Relationship Start | Relationship End |
| Citicorp Vickers Energy Investments Limited | Parent | 2/1/1990 | 9/29/1998 |
| Citicorp Vickers Power Facilitators Limited | Parent | 2/1/1990 | 9/29/1998 |
| Relationships | Role | Relationship Start | Relationship End |
| Citicorp Vickers Energy Investments Limited | Parent | 2/1/1990 | 9/29/1998 |
| Citicorp Vickers Power Facilitators Limited | Parent | 2/1/1990 | 9/29/1998 |