| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Coniston Power Ltd | 06760800 | 11/02/2009 | Dissolved |
| DRAGON FOREST PRODUCTS LIMITED | 07150562 | 24/03/2011 | Dissolved |
| Huntspill Power Co Ltd | 06607043 | 02/10/2008 | Dissolved |
| Orwell Power Ltd | 06619439 | 11/02/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| APUS ENERGY LIMITED | 09153837 | 17/05/2017 | 14/08/2017 | Silver |
| BANBURY POWER LIMITED | 10697338 | 29/03/2017 | 11/03/2020 | One Red Flag |
| BURY POWER LIMITED | 09517811 | 09/08/2016 | 11/03/2020 | One Red Flag |
| CADOXTON RESERVE POWER LIMITED | 09127592 | 11/08/2015 | 13/01/2016 | One Red Flag |
| CARRON ENGINEERING & CONSTRUCTION LIMITED | 06313902 | 16/09/2008 | 06/03/2009 | Dissolved |
| CLYNE POWER LIMITED | 09128547 | 12/08/2015 | 13/01/2016 | Bronze |
| CONNECTIVE 1 LIMITED | 06019059 | 25/06/2007 | 28/07/2008 | Dissolved |
| CONNECTIVE ENERGY LIMITED | 05673978 | 25/06/2007 | 28/07/2008 | Dissolved |
| CULVERY POWER LIMITED | 09130861 | 09/08/2016 | 11/03/2020 | One Red Flag |
| CYNON POWER LIMITED | 08604620 | 10/07/2013 | 21/01/2015 | One Red Flag |
| DAFEN RESERVE POWER LIMITED | 08836682 | 09/08/2016 | 11/03/2020 | One Red Flag |
| DARENT POWER LIMITED | 07109002 | 24/03/2011 | 21/07/2014 | Amber |
| DRAGON POWER DEVELOPMENTS LIMITED | 06703533 | 02/10/2008 | 25/10/2017 | Not Trading |
| DRAX ENERGY SOLUTIONS LIMITED | 05893966 | 16/09/2008 | 06/03/2009 | Silver |
| FIRST ENERGY LIMITED | 07264944 | 24/03/2011 | 28/09/2011 | Gold |
| Global Renewable Energy Partners Ltd | 04184389 | 21/03/2001 | 10/04/2001 | Dissolved |
| HARBOURNE POWER LIMITED | 09130292 | 11/08/2015 | 13/01/2016 | Bronze |
| HULL RESERVE POWER LIMITED | 07882287 | 08/08/2017 | 11/03/2020 | Bronze |
| IMMINGHAM POWER LIMITED | 10618661 | 14/02/2017 | 11/03/2020 | Bronze |
| IRWELL POWER LIMITED | 10116738 | 03/08/2016 | 11/03/2020 | Bronze |
| KILN POWER LIMITED | 09966818 | 03/08/2016 | 11/03/2020 | One Red Flag |
| LANCASTER POWER LIMITED | 10208169 | 31/05/2016 | 02/12/2016 | One Red Flag |
| LARIGAN POWER LIMITED | 09130849 | 15/07/2014 | 20/11/2014 | One Red Flag |
| LEVEN POWER LIMITED | 05440338 | 11/02/2009 | 21/07/2014 | One Red Flag |
| LODDON POWER LIMITED | 09966341 | 03/08/2016 | 11/03/2020 | One Red Flag |
| MARDEN POWER LIMITED | 09415916 | 12/08/2015 | 11/03/2020 | One Red Flag |
| NEVERN POWER LIMITED | 09649396 | 12/08/2015 | 08/07/2016 | One Red Flag |
| NORTHWICH POWER LIMITED | 09966649 | 03/08/2016 | 11/03/2020 | Bronze |
| OGMORE POWER LIMITED | 09128094 | 14/07/2014 | 20/11/2014 | One Red Flag |
| ORSTED SP HOLDING (UK) LIMITED | 06454112 | 02/10/2008 | 06/03/2009 | Gold |
| REDLAKE POWER LIMITED | 09415417 | 09/08/2016 | 11/03/2020 | One Red Flag |
| RHYMNEY POWER LIMITED | 07259510 | 24/03/2011 | 21/07/2014 | Silver |
| SELBY POWER LIMITED | 09415320 | 09/08/2016 | 11/03/2020 | One Red Flag |
| SEVERN GAS TRANSPORTATION LIMITED | 05121224 | 02/10/2008 | 06/03/2009 | Amber |
| SEVERN POWER FUNDING LIMITED | 06537284 | 02/10/2008 | 06/03/2009 | Dissolved |
| SEVERN POWER LIMITED | 05392552 | 02/10/2008 | 06/03/2009 | Amber |
| SIMEC USKMOUTH POWER LIMITED | 05104786 | 02/10/2008 | 13/08/2009 | Silver |
| ST ASAPH POWER LIMITED | 09649240 | 12/12/2016 | 11/03/2020 | Bronze |
| TILLINGHAM POWER LIMITED | 09130931 | 15/07/2014 | 20/11/2014 | One Red Flag |
| WARRINGTON POWER LIMITED | 10309446 | 03/08/2016 | 11/03/2020 | One Red Flag |
| WESTWOOD POWER LIMITED | 10208400 | 18/04/2019 | 11/03/2020 | One Red Flag |
| WHARF POWER LIMITED | 09752795 | 27/08/2015 | 29/02/2016 | Bronze |
| WOLVERHAMPTON POWER LTD | 09120557 | 12/08/2015 | 16/12/2015 | One Red Flag |
| WYRE GAS TRANSPORTATION LIMITED | 06658221 | 02/10/2008 | 23/12/2015 | Dissolved |
| WYRE POWER LIMITED | 06449211 | 02/10/2008 | 23/12/2015 | One Red Flag |