| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ATTADALE GRID LIMITED | 10254911 | 28/06/2016 | Not Trading |
| BEN DRONAIG HYDRO LIMITED | SC409781 | 20/10/2011 | Dissolved |
| BEN GLAS POWER LIMITED | 09022221 | 12/08/2015 | Silver |
| BLENCATHRA HYDRO LIMITED | 09761685 | 03/09/2015 | Bronze |
| BRITISH HYDROPOWER ASSOCIATION LIMITED | 05689982 | 21/12/2020 | Gold |
| EARBA LIMITED | 14386618 | 29/09/2022 | Silver |
| EDERLINE HYDRO LIMITED | SC408062 | 23/09/2011 | Bronze |
| FEARNA PSH LIMITED | 14819538 | 21/04/2023 | Bronze |
| FEARNA STORAGE LIMITED | 14543071 | 15/12/2022 | Silver |
| FRENICH HYDRO LIMITED | SC382106 | 31/08/2018 | Bronze |
| GHI BIDCO LIMITED | 11078006 | 08/05/2018 | One Red Flag |
| GHI HOLDINGS LIMITED | 11077970 | 08/05/2018 | Bronze |
| GHI TAODAIL LIMITED | 11253838 | 14/03/2018 | Not Trading |
| GILBERT GILKES & GORDON HOLDINGS LIMITED | 10331484 | 16/08/2016 | Silver |
| GILBERT GILKES & GORDON LIMITED | 00173768 | 01/11/2006 | Gold |
| GILKES ENERGY (EDERLINE HYDRO) LIMITED | SC428097 | 11/07/2012 | Silver |
| GILKES ENERGY LIMITED | 03203285 | 22/09/2008 | Bronze |
| GILKES HYDRO INVESTMENTS LIMITED | 09648935 | 20/06/2015 | One Red Flag |
| GILKES HYDRO PROJECTS LIMITED | 08969105 | 23/06/2014 | Bronze |
| GILKES LIMITED | 00978355 | 01/01/2014 | Gold |
| GILKES PUMPING SYSTEMS LIMITED | 03573267 | 01/01/2013 | Gold |
| GOLDENEYE RENEWABLES LIMITED | 08957816 | 15/07/2014 | Bronze |
| GOSHAWK ENERGY LIMITED | 09010609 | 10/11/2014 | Amber |
| GREAT GABLE ENERGY LIMITED | SC495279 | 16/01/2015 | Silver |
| HONISTER ENERGY LIMITED | 09825090 | 15/10/2015 | Bronze |
| KIRKSTONE ENERGY LIMITED | 09825022 | 15/10/2015 | Bronze |
| LINGMELL HOLDINGS LIMITED | 10713101 | 06/04/2017 | Dissolved |
| MULARD RENEWABLES HOLDINGS LIMITED | 11345053 | 03/05/2018 | Bronze |
| MULARD RENEWABLES LIMITED | 08761241 | 04/12/2013 | Bronze |
| NIGHTJAR SUSTAINABLE POWER LIMITED | 08994734 | 27/11/2014 | Bronze |
| OSPREY GREEN POWER LIMITED | 08993493 | 23/10/2014 | Bronze |
| REDSTART RENEWABLES LIMITED | 08937420 | 04/04/2014 | Bronze |
| RYDAL HYDRO LIMITED | 08912230 | 04/07/2014 | Silver |
| SCANDALE HYDRO LIMITED | 09233328 | 26/01/2015 | Bronze |
| TAODAIL HYDRO LIMITED | 09625209 | 05/06/2015 | Bronze |
| VIDAR PROJECTS LLP | OC425148 | 06/12/2018 | Bronze |
| WHINLATTER ENERGY LIMITED | 09825021 | 15/10/2015 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| LEACANN ELECTRIC COMPANY LIMITED | 08994740 | 30/01/2015 | 30/12/2019 | Bronze |
| LOGAN GILL HYDROELECTRIC LTD | 06941343 | 07/07/2009 | 31/03/2021 | Amber |