| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| COMPOUND RENEWABLES RECYCLING LIMITED | 09298525 | 06/11/2014 | Dissolved |
| ENNERCO LIMITED | 10537431 | 22/12/2016 | Dissolved |
| MBO ENERGY LIMITED | 08000999 | 22/03/2012 | Dissolved |
| PORTMAN POWER LIMITED | 09452707 | 16/05/2023 | One Red Flag |
| PPT CAPITAL LIMITED | 08093388 | 01/10/2013 | Dissolved |
| SELECTGEN LIMITED | 09452027 | 16/05/2023 | Amber |
| UNITED WOODEN COLLARS LIMITED | 08202561 | 01/10/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATTUNE ENERGY LIMITED | 08917840 | 14/11/2014 | 24/02/2015 | Bronze |
| FULCRUM POWER GENERATION LIMITED | 08295779 | 20/12/2012 | 29/09/2017 | Dissolved |
| KI POWER LIMITED | 10266445 | 05/09/2018 | 29/10/2019 | Dissolved |
| OPEN ENERGI LIMITED | 03838585 | 19/11/2008 | 31/03/2012 | One Red Flag |
| PLUTUS ENERGY LIMITED | 08836957 | 08/01/2014 | 29/10/2019 | Gold |
| PLUTUS POWERGEN PLC | 05859612 | 22/08/2014 | 29/10/2019 | One Red Flag |
| PORTMAN POWER LIMITED | 09452707 | 16/05/2023 | 10/11/2023 | One Red Flag |
| SELECTGEN LIMITED | 09452027 | 16/05/2023 | 10/11/2023 | Amber |