| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ARBRE FARMING LIMITED | 03205944 | 07/05/2002 | Dissolved |
| Arbre Energy Ltd | 03014342 | 07/05/2002 | Dissolved |
| ECO2 CENTRAL LIMITED | 06337776 | 08/08/2007 | Dissolved |
| ECO2 LINCS CHP LIMITED | 06968305 | 21/07/2009 | Dissolved |
| FOCHRIW RENEWABLE ENERGY LIMITED | 05914775 | 23/08/2006 | Dissolved |
| GLYNCORRWG RENEWABLE ENERGY LIMITED | 05921105 | 31/08/2006 | Dissolved |
| Hekla Holdings Ltd | 00388043 | 25/01/1992 | Dissolved |
| Northern Trading Co Ltd | 01511081 | 15/08/1991 | Dissolved |
| TIDAL ENERGY LIMITED | 04135447 | 20/12/2007 | Insolvent |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AN DEVELOPMENT LIMITED | 06275490 | 11/06/2007 | 11/06/2015 | Strike Off |
| ANGLIAN STRAW LIMITED | 02501581 | 20/03/2002 | 22/07/2003 | Dissolved |
| Anglian Ash Ltd | 03723396 | 26/08/1999 | 22/07/2003 | Dissolved |
| BELFAST WASTE SERVICES LIMITED | NI032890 | 01/09/1997 | 08/03/2005 | Dissolved |
| BELFAST WASTE SERVICES LIMITED | NI032890 | 20/03/2002 | 09/12/2004 | Dissolved |
| BERWICK FARM POWER LIMITED | 05187928 | 24/08/2004 | 04/04/2008 | Dissolved |
| BESTSELECTION LIMITED | 04085933 | 07/05/2002 | 22/07/2003 | Dissolved |
| BOGANLEA RENEWABLE ENERGY LIMITED | 05919270 | 30/08/2006 | 10/01/2014 | Amber |
| BRIGG RENEWABLE POWER FUELS LIMITED | 06266322 | 01/06/2007 | 01/11/2013 | Gold |
| BRIGG RENEWABLE POWER LIMITED | 06337326 | 08/08/2007 | 12/11/2013 | Gold |
| CAMBRIAN RENEWABLE ENERGY LIMITED | 04803358 | 28/02/2005 | 02/06/2010 | Silver |
| Copy Face Ltd | 04470344 | 22/07/2002 | 22/07/2003 | Dissolved |
| Corby Energy Ltd | 04069887 | 20/03/2002 | 22/07/2003 | Dissolved |
| ECO RENEWABLES LIMITED | 06026144 | 12/12/2006 | 01/01/2018 | Silver |
| ECO2 ARANDA LIMITED | 06801449 | 26/01/2009 | 01/01/2018 | Dissolved |
| ECO2 BIOMASS LIMITED | 06316681 | 18/07/2007 | 01/01/2018 | Dissolved |
| ECO2 CAMBRIAN LIMITED | 05504383 | 28/09/2005 | 02/06/2010 | Dissolved |
| ECO2 CENTRAL LIMITED | 06337776 | 28/09/2012 | 12/04/2013 | Dissolved |
| ECO2 DEVELOPMENTS LIMITED | 08522957 | 30/03/2014 | 15/09/2015 | Dissolved |
| ECO2 ESPANA LIMITED | 06168728 | 19/03/2007 | 01/01/2018 | One Red Flag |
| ECO2 ESPANA LIMITED | 06168728 | 23/12/2015 | 18/01/2017 | One Red Flag |
| ECO2 HATTON LIMITED | 06256803 | 23/05/2007 | 07/10/2011 | Dissolved |
| ECO2 LIMITED | 05268380 | 15/02/2005 | 01/01/2018 | Amber |
| ECO2 LIMITED | 05268380 | 20/10/2010 | 18/01/2017 | Amber |
| ECO2 MANAGEMENT SERVICES LIMITED | 08522956 | 19/06/2013 | 18/01/2017 | Silver |
| ECO2 MARINE ENERGY LIMITED | 05676798 | 16/01/2006 | 01/01/2018 | Bronze |
| ECO2 MEDINA LIMITED | 06801457 | 26/01/2009 | 01/01/2018 | Dissolved |
| ECO2 RIOJA LIMITED | 06801440 | 26/01/2009 | 01/01/2018 | Gold |
| ECO2 RIOJA LIMITED | 06801440 | 24/09/2015 | 18/01/2017 | Gold |
| ECO2 SOUTH WALES LIMITED | 08114024 | 16/07/2013 | 22/01/2015 | Dissolved |
| ENERGY POWER RESOURCES LIMITED | 03302734 | 30/09/1999 | 22/07/2003 | Amber |
| EPR ELY LIMITED | 03401618 | 20/03/2002 | 22/07/2003 | Amber |
| EPR ELY POWER LIMITED | 03559356 | 20/03/2002 | 22/07/2003 | Dissolved |
| EPR SCOTLAND LIMITED | SC147994 | 20/03/2002 | 22/07/2003 | One Red Flag |
| Ely Power Ltd | 03397504 | 20/03/2002 | 22/07/2003 | Dissolved |
| Epr Corby Ltd | 02903088 | 20/03/2002 | 22/07/2003 | Dissolved |
| Epr Ltd | SC149644 | 30/09/1999 | 22/07/2003 | Dissolved |
| FIBROWATT GROUP LIMITED | 02868498 | 20/12/2002 | 24/08/2004 | Dissolved |
| FIBROWATT LIMITED | 02595814 | 20/12/2002 | 24/08/2004 | Dissolved |
| FIRST RENEWABLES (OVERSEAS) LIMITED | 03909857 | 07/05/2002 | 22/07/2003 | Dissolved |
| FIRST RENEWABLES LIMITED | 03715615 | 07/05/2002 | 22/07/2003 | Dissolved |
| FRAMPTON POWER LIMITED | 05504389 | 30/09/2005 | 04/04/2008 | Dissolved |
| Four Ashes Holdings Ltd | 04155597 | 20/03/2002 | 22/07/2003 | Dissolved |
| GOOLE RENEWABLE ENERGY LIMITED | 03707832 | 14/04/2000 | 22/07/2003 | Dissolved |
| GOOLE RENEWABLE ENERGY LIMITED | 03707832 | 22/03/1999 | 09/02/2006 | Dissolved |
| GRAYRENTALS LIMITED | 02620554 | 25/07/1991 | 01/06/1992 | One Red Flag |
| GRAYRENTALS LIMITED | 02620554 | 25/07/1991 | 01/06/1992 | One Red Flag |
| GREP1 LIMITED | 06000706 | 16/11/2006 | 09/12/2011 | Bronze |
| Graylease Rentals Ltd | 02630011 | 13/09/1991 | 25/10/1991 | Dissolved |
| HATTON WINDPOWER LIMITED | SC313899 | 24/04/2008 | 07/10/2011 | Insolvent |
| LINCOLNSHIRE BIOMASS LTD | 05908285 | 22/12/2006 | 09/12/2011 | One Red Flag |
| LYME AND WOOD POWER LIMITED | 05188440 | 24/08/2004 | 04/04/2008 | Dissolved |
| MARGAM GREEN ENERGY LIMITED | 08441850 | 05/09/2013 | 22/01/2015 | Bronze |
| Nowport Ltd | 03773569 | 23/06/1999 | 22/07/2003 | Dissolved |
| PADARN POWER COMPANY LIMITED | 02577647 | 20/03/2002 | 22/07/2003 | Dissolved |
| PORT CLARENCE ENERGY LIMITED | 08790013 | 06/05/2014 | 15/09/2015 | Three Red Flags (Highest) |
| REDIMO LFG POWER LTD. | 04044216 | 28/09/2005 | 04/04/2008 | Dissolved |
| RENEWGEN LIMITED | 03717727 | 07/05/2002 | 22/07/2003 | Dissolved |
| RIVERSIDE RESOURCE RECOVERY LIMITED | 03723386 | 20/03/2002 | 22/07/2003 | Silver |
| Transfreight International Ltd | 02469061 | 12/02/1992 | 01/06/1992 | Dissolved |
| VIGO UTOPIA POWER LIMITED | 05504738 | 01/09/2005 | 04/04/2008 | Dissolved |
| WESTERN BIO-ENERGY (FUELS) LIMITED | 05210135 | 29/11/2004 | 02/03/2006 | Bronze |