| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALVESTON WIND PARK LIMITED | 06231505 | 30/04/2007 | One Red Flag |
| B S GREEN ENERGY LIMITED | 09360064 | 16/03/2022 | One Red Flag |
| BAMBERS WIND PARK LIMITED | 03860584 | 18/10/1999 | Silver |
| BICKER FEN ENERGY STORAGE LIMITED | 04300047 | 05/10/2001 | Not Trading |
| BRISTOL PORT WIND PARK LIMITED | 05416579 | 20/10/2005 | Silver |
| CARBONAID LTD | 05290055 | 18/11/2004 | Not Trading |
| CARDIFF WIND PARK LIMITED | 06211148 | 12/04/2007 | Bronze |
| CLIMATE DIAMOND LIMITED | 11186427 | 05/02/2018 | Dissolved |
| DAGENHAM WIND PARK LIMITED | 03530168 | 18/03/1998 | Bronze |
| DALBY WIND PARK LIMITED | 06559922 | 09/04/2008 | Bronze |
| ECO CARS LIMITED | 06977581 | 31/07/2009 | Strike Off |
| ECOBANK LIMITED | 05289910 | 18/11/2004 | Not Trading |
| ECOGAS SUPPLIES LIMITED | 04776347 | 23/05/2003 | Dissolved |
| ECOJET AIRLINES LIMITED | SC707997 | 20/03/2023 | Silver |
| ECOLECTRICITY LIMITED | 03636137 | 22/09/1998 | Dissolved |
| ECOTALK LIMITED | 07442414 | 17/11/2010 | One Red Flag |
| ECOTILITY LIMITED | 07000501 | 25/08/2009 | Not Trading |
| ECOTOPIA LIMITED | 05249772 | 31/07/2008 | One Red Flag |
| ECOTRICITY (ALVESTON) LIMITED | 11335772 | 30/04/2018 | Bronze |
| ECOTRICITY DE FRANCE LIMITED | 07000481 | 25/08/2009 | Not Trading |
| ECOTRICITY GENERATION LIMITED | 03117225 | 24/10/1995 | Silver |
| ECOTRICITY GROUP LTD | 03521776 | 04/03/1998 | Silver |
| ECOTRICITY HOLDING COMPANY LIMITED | 11099404 | 06/12/2017 | Not Trading |
| ECOTRICITY NEW VENTURES LIMITED | 11099389 | 06/12/2017 | One Red Flag |
| ECOWATER LIMITED | 04776319 | 23/05/2003 | Not Trading |
| FEN FARM SOLAR PARK LIMITED | 06211102 | 12/04/2007 | Bronze |
| FEN FARM WIND PARK LIMITED | 05416570 | 20/10/2005 | Silver |
| GALSWORTHY WIND PARK LIMITED | 06231489 | 02/05/2007 | Bronze |
| GREEN DEVILS LIMITED | 11358774 | 12/05/2018 | Dissolved |
| GREEN PARK WIND PARK LIMITED | 03530169 | 18/03/1998 | Silver |
| HAPPEA CHAPPEA LIMITED | 10873244 | 07/12/2023 | Bronze |
| MERCHANT WIND PARK (EAST KILBRIDE) LIMITED | 03820286 | 05/08/1999 | Silver |
| MICROTRICITY LIMITED | 05416578 | 20/10/2005 | Not Trading |
| POLLINGTON WIND PARK LIMITED | 05860765 | 13/12/2006 | One Red Flag |
| WIND HOLDINGS NORD LIMITED | 06305025 | 06/07/2007 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| THE ELECTRIC HIGHWAY COMPANY LIMITED | 08370340 | 22/01/2013 | 04/06/2021 | One Red Flag |