| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ENERLOY PTY LTD | FC027958 | 04/07/2014 | Dissolved |
| FHH NO.2 LIMITED | 04984510 | 04/07/2014 | Dissolved |
| IMPALA KOOKABURRA LIMITED | FC028028 | 04/07/2014 | Dissolved |
| IMPALA MAGPIE LIMITED | FC028030 | 04/07/2014 | Dissolved |
| IPM ADVANTAGE B.V. | FC028589 | 04/07/2014 | Amber |
| IPM HYDRO (UK) LIMITED | 03123340 | 04/07/2014 | Dissolved |
| IPM RAVEN LIMITED | 05974780 | 04/07/2014 | Dissolved |
| IPM ROYALE | FC022441 | 04/07/2014 | N/A |
| IPM WIND POWER ITALY B.V. | FC028592 | 04/07/2014 | Dissolved |
| IPMDELCARIBE HOLDING GMBH | FC028593 | 04/07/2014 | Dissolved |
| MAJESTIC ENERGY | 03732369 | 04/07/2014 | Dissolved |
| PRINCEMARK LIMITED | 05308778 | 04/07/2014 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DEESIDE POWER (UK) LIMITED | 08887001 | 16/10/2017 | 31/10/2017 | Gold |
| DERWENT COGENERATION LIMITED | 02650621 | 04/07/2014 | 17/11/2017 | Dissolved |
| ENGIE UK MARKETS LIMITED | 02462479 | 16/10/2017 | 15/11/2017 | Silver |
| INDIAN QUEENS OPERATIONS LIMITED | 03199510 | 16/10/2017 | 31/10/2017 | Dissolved |
| INDIAN QUEENS POWER LIMITED | 02928100 | 16/10/2017 | 31/10/2017 | Silver |
| INTERNATIONAL POWER FUEL COMPANY LIMITED | 03867156 | 16/10/2017 | 15/11/2017 | Amber |
| IPM (BORELLI) LIMITED | 05309008 | 16/10/2017 | 15/11/2017 | Dissolved |
| IPM DEL CARIBE | FC032343 | 06/02/2015 | 15/11/2017 | Dissolved |
| IPM EAGLE VICTORIA B.V. | FC028591 | 04/07/2014 | 15/11/2017 | Dissolved |
| IPM ENERGY COMPANY (UK) LIMITED | 02500718 | 04/07/2014 | 15/11/2017 | Silver |
| IPM ENERGY LIMITED | 02704476 | 16/10/2017 | 30/10/2017 | Silver |
| IPM ENERGY SERVICES B.V. | FC028590 | 04/07/2014 | 15/11/2017 | Dissolved |
| IPM HOLDINGS (UK) LIMITED | 09022986 | 04/07/2014 | 15/11/2017 | Silver |
| IPM INTERNATIONAL B.V. | FC028587 | 04/07/2014 | 15/11/2017 | Dissolved |
| IPM PEACOCK LIMITED | 09789043 | 22/09/2015 | 15/11/2017 | Bronze |
| IQ POWER HOLDINGS LIMITED | 05889069 | 16/10/2017 | 31/10/2017 | Dissolved |
| LYB GENERATION HOLDINGS | 03317486 | 04/07/2014 | 15/11/2017 | Dissolved |
| LYB VICTORIA GENERATION LIMITED | 03317485 | 04/07/2014 | 15/11/2017 | Dissolved |
| NORMANBRIGHT (UK CO 5) LIMITED | 05234585 | 04/07/2014 | 15/11/2017 | Silver |
| NORMANFRAME (UK CO 6) LIMITED | 05250056 | 04/07/2014 | 15/11/2017 | Silver |
| NORMANTRAIL (UK CO 3) LIMITED | 05234591 | 04/07/2014 | 15/11/2017 | Dissolved |
| PONAMA HOLDINGS LIMITED | FC029208 | 04/07/2014 | 15/11/2017 | Dissolved |
| SALTEND OPERATIONS COMPANY LIMITED | 04241615 | 16/10/2017 | 31/10/2017 | Bronze |
| VGL (GUERNSEY) LIMITED | FC025238 | 04/07/2014 | 15/11/2017 | Dissolved |