| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AES KILROOT GENERATING LIMITED | NI037997 | 16/01/2017 | Dissolved |
| AES UK POWER LIMITED | 03878782 | 15/05/2018 | Dissolved |
| EP BALLYLUMFORD LIMITED | NI026040 | 16/01/2017 | Silver |
| EP KILROOT LIMITED | NI026039 | 16/01/2017 | Silver |
| EP NI ENERGY LIMITED | NI667118 | 20/01/2020 | One Red Flag |
| Nigen Supply Ltd | NI033396 | 08/01/2001 | Dissolved |
| THE POWER GENERATION PENSION SCHEME TRUSTEES LIMITED | 14330573 | 01/09/2022 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AES (NI) LIMITED | NI026332 | 16/01/2017 | 04/04/2019 | Amber |
| AES BALLYLUMFORD HOLDINGS LIMITED | 07261857 | 18/04/2018 | 04/04/2019 | Silver |
| AES BARRY LIMITED | 03135522 | 15/05/2018 | 12/06/2019 | Bronze |
| AES BARRY OPERATIONS LIMITED | 03210172 | 18/04/2018 | 12/06/2019 | Amber |
| AES BELFAST WEST POWER LIMITED | NI026037 | 08/01/2001 | 12/06/2019 | Amber |
| AES DRAX POWER FINANCE HOLDINGS LIMITED | 03878799 | 01/08/2018 | 12/06/2019 | Dissolved |
| AES ENERGY STORAGE UK LIMITED | 10250698 | 15/05/2018 | 12/06/2019 | Dissolved |
| AES HORIZONS INVESTMENTS LIMITED | 02676624 | 15/05/2018 | 12/06/2019 | Amber |
| AES K2 LIMITED | 03135543 | 15/05/2018 | 12/06/2019 | Dissolved |
| AES OVERSEAS HOLDINGS LIMITED | 06487663 | 18/04/2018 | 12/06/2019 | Silver |
| AES TEP POWER II INVESTMENTS LIMITED | 00212618 | 18/04/2018 | 12/06/2019 | Amber |
| AES TEP POWER INVESTMENTS LIMITED | 04084626 | 18/04/2018 | 12/06/2019 | Dissolved |
| AES UK DATACENTER SERVICES LIMITED | 03878758 | 15/05/2018 | 12/06/2019 | Not Trading |
| AES UK HOLDINGS LTD | 03387045 | 15/05/2018 | 12/06/2019 | Silver |
| AES UK POWER FINANCING II LIMITED | 04027712 | 15/05/2018 | 12/06/2019 | Dissolved |
| AES UK POWER FINANCING LIMITED | 03878803 | 15/05/2018 | 12/06/2019 | Dissolved |
| AES UK POWER HOLDINGS LIMITED | 03878789 | 15/05/2018 | 12/06/2019 | Dissolved |
| AES VENEZUELA FINANCE | 04011137 | 15/05/2018 | 12/06/2019 | Dissolved |
| AES WIND GENERATION LIMITED | 04108324 | 01/08/2018 | 12/06/2019 | Not Trading |
| CLOGHAN LIMITED | NI026594 | 01/03/2004 | 01/06/2006 | Silver |
| CLOGHAN POINT (HOLDINGS) LIMITED | NI026393 | 07/03/1992 | 01/06/2006 | Bronze |
| CLOGHAN POINT (HOLDINGS) LIMITED | NI026393 | 08/01/2001 | 01/06/2006 | Bronze |
| MERCURY CHILE CO. II. LLC | FC034029 | 18/04/2018 | 10/06/2019 | Bronze |
| MERCURY CHILE HOLDCO LLC | FC034027 | 18/04/2018 | 10/06/2019 | Silver |
| YOUR ENERGY HOLDINGS LIMITED | 07435706 | 15/05/2018 | 12/06/2019 | Not Trading |