| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BRITISH HYDROPOWER ASSOCIATION LIMITED | 05689982 | 21/12/2020 | Silver |
| GREEN HIGHLAND RENEWABLES LTD | SC315779 | 10/12/2021 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACHNACARRY HYDRO LTD | SC367490 | 07/05/2014 | 10/12/2021 | One Red Flag |
| ALLT GARBH HYDRO LTD | SC440481 | 08/07/2019 | 16/12/2021 | Bronze |
| ARGYLL HYDRO LTD | SC519088 | 08/07/2019 | 08/07/2019 | Bronze |
| BARRS HYDRO LTD | SC404178 | 31/03/2014 | 21/09/2018 | Bronze |
| BRUACHAIG HYDRO LIMITED | SC484269 | 13/08/2014 | 01/08/2018 | One Red Flag |
| CEANNACROC HYDRO LTD | SC489743 | 08/07/2019 | 08/07/2019 | One Red Flag |
| CHAORACH HYDRO LIMITED | SC440285 | 03/07/2014 | 01/08/2018 | Bronze |
| CHONAIS RIVER HYDRO LIMITED | 09295365 | 02/04/2015 | 03/08/2016 | Amber |
| CONRAD (LILLYHALL) LIMITED | SC493107 | 10/12/2014 | 27/11/2015 | Bronze |
| COULAGS HYDRO LTD | SC489741 | 08/07/2019 | 08/07/2019 | Silver |
| ELEMENTARY ENERGY LIMITED | 08318216 | 17/12/2013 | 06/01/2016 | Bronze |
| ENRICK GRIDCO LIMITED | SC533557 | 25/04/2016 | 15/11/2022 | Bronze |
| ETIVE GRIDCO LTD | SC489749 | 08/07/2019 | 16/12/2021 | Silver |
| GHARAGAIN RIVER HYDRO LIMITED | 09295400 | 02/04/2015 | 08/09/2016 | Amber |
| GHH ACQUISITIONS MIDCO LTD | 09454127 | 08/07/2019 | 08/07/2019 | Bronze |
| GHH GROUP HOLDINGS LTD | SC540972 | 08/07/2019 | 16/12/2021 | Bronze |
| GLEANN NAM FIADH HYDRO LTD | SC399455 | 08/07/2019 | 08/07/2019 | Bronze |
| GREEN HIGHLAND HYDRO POWER LIMITED | SC493110 | 10/12/2014 | 27/11/2015 | Dissolved |
| GREEN HIGHLAND RENEWABLES (LEDGOWAN) LIMITED | SC376860 | 11/11/2013 | 08/09/2016 | Silver |
| GREEN HIGHLAND RENEWABLES LTD | SC315779 | 08/07/2019 | 09/12/2021 | Gold |
| KELTNEYBURN HYDRO LTD | SC237428 | 08/07/2019 | 16/12/2021 | Silver |
| LIATRIE BURN HYDRO LTD | SC489734 | 24/10/2014 | 31/07/2018 | One Red Flag |
| LOCHABER 2 HYDRO LTD | SC606808 | 08/07/2019 | 16/12/2021 | Dissolved |
| LOCHABER HYDRO LTD | SC510759 | 08/07/2019 | 08/07/2019 | Bronze |
| MULLARDOCH HYDRO LTD | SC493101 | 10/12/2014 | 24/09/2018 | Silver |
| NATHRACH HYDRO LTD | SC519092 | 08/07/2019 | 16/12/2021 | Bronze |
| ROROYERE HYDRO LTD | SC357527 | 08/07/2019 | 08/07/2019 | Silver |
| SHENVAL HYDRO LTD | SC489744 | 08/07/2019 | 16/12/2021 | Bronze |