| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| PEAK GEN POWER 19 LIMITED | 09145990 | 24/07/2014 | Dissolved |
| PEAK GEN POWER 20 LIMITED | 09146042 | 24/07/2014 | Dissolved |
| PEAK GEN POWER 23 LIMITED | 09146738 | 24/07/2014 | Dissolved |
| PEAK GEN POWER 28 LIMITED | 09718104 | 05/08/2015 | Dissolved |
| PEAK GEN POWER 29 LIMITED | 09718128 | 05/08/2015 | Dissolved |
| PEAK GEN POWER 30 LIMITED | 09718163 | 05/08/2015 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BASILDON POWER LIMITED | 09144975 | 23/07/2014 | 01/12/2017 | One Red Flag |
| CARRON ENERGY LIMITED | 06937966 | 05/12/2022 | 19/04/2024 | Bronze |
| FIELD GERRARDS CROSS LTD | 09718112 | 05/08/2015 | 19/01/2021 | One Red Flag |
| ITCHEN POWER LIMITED | 09146100 | 24/07/2014 | 01/12/2017 | One Red Flag |
| MERSEY REACTIVE POWER LIMITED | 12650628 | 08/06/2020 | 19/01/2021 | One Red Flag |
| NET ZERO ENERGY DEVELOPMENT LIMITED | 12613469 | 20/05/2020 | 19/01/2021 | Bronze |
| PEAK GEN HOLDINGS LIMITED | 08179597 | 14/08/2014 | 13/01/2021 | Not Trading |
| PEAK GEN POWER 10 LIMITED | 09144106 | 23/07/2014 | 18/01/2021 | Not Trading |
| PEAK GEN POWER 11 LIMITED | 09144127 | 23/07/2014 | 18/01/2021 | Silver |
| PEAK GEN POWER 12 LIMITED | 09144365 | 23/07/2014 | 19/01/2021 | Not Trading |
| PEAK GEN POWER 13 LIMITED | 09144209 | 23/07/2014 | 18/01/2021 | Silver |
| PEAK GEN POWER 14 LIMITED | 09145062 | 24/07/2014 | 18/01/2021 | Silver |
| PEAK GEN POWER 17 LIMITED | 09145136 | 24/07/2014 | 18/01/2021 | Not Trading |
| PEAK GEN POWER 18 LIMITED | 09145186 | 24/07/2014 | 18/01/2021 | Silver |
| PEAK GEN POWER 2 LIMITED | 08179576 | 14/08/2014 | 13/01/2021 | One Red Flag |
| PEAK GEN POWER 21 LIMITED | 09145955 | 24/07/2014 | 19/01/2021 | Not Trading |
| PEAK GEN POWER 24 LIMITED | 09148247 | 25/07/2014 | 18/01/2021 | Not Trading |
| PEAK GEN POWER 25 LIMITED | 09718110 | 05/08/2015 | 18/01/2021 | Not Trading |
| PEAK GEN POWER 26 LIMITED | 09718111 | 05/08/2015 | 18/01/2021 | Not Trading |
| PEAK GEN POWER 3 LIMITED | 08527073 | 14/08/2014 | 19/01/2021 | Not Trading |
| PEAK GEN POWER 31 LIMITED | 12936838 | 08/10/2020 | 19/01/2021 | Not Trading |
| PEAK GEN POWER 4 LIMITED | 08527210 | 14/08/2014 | 19/01/2021 | Not Trading |
| PEAK GEN POWER 5 LIMITED | 08527380 | 14/08/2014 | 19/01/2021 | Silver |
| PEAK GEN POWER 6 LIMITED | 08527433 | 14/08/2014 | 19/01/2021 | Silver |
| PEAK GEN POWER 7 LIMITED | 08527468 | 14/08/2014 | 19/01/2021 | One Red Flag |
| PEAK GEN POWER 8 LIMITED | 09143483 | 23/07/2014 | 13/01/2021 | Not Trading |
| PEAK GEN POWER 9 LIMITED | 09144145 | 23/07/2014 | 13/01/2021 | Not Trading |
| PEAK GEN POWER LIMITED | 07344467 | 25/06/2014 | 13/01/2021 | Bronze |
| SMETHWICK POWER LIMITED | 09145011 | 23/07/2014 | 01/12/2017 | One Red Flag |
| WELSH POWER GROUP LIMITED | 05766467 | 05/12/2022 | 19/04/2024 | Silver |