| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Cartwright,J S,& Co (Engineering) Ltd | SC145014 | 05/02/1996 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACHNACARRY HYDRO LTD | SC367490 | 23/07/2014 | 19/08/2014 | Bronze |
| ALLT GARBH HYDRO LTD | SC440481 | 16/01/2013 | 11/03/2015 | Silver |
| ARGYLL HYDRO LTD | SC519088 | 17/07/2019 | 23/03/2021 | Bronze |
| AVERON LEISURE MANAGEMENT LIMITED | SC134583 | 12/04/2005 | 07/06/2006 | Dissolved |
| BARRS HYDRO LTD | SC404178 | 17/07/2019 | 23/03/2021 | One Red Flag |
| BRUACHAIG HYDRO LIMITED | SC484269 | 08/10/2015 | 01/08/2018 | One Red Flag |
| CEANNACROC HYDRO LTD | SC489743 | 17/07/2019 | 23/03/2021 | Bronze |
| CHAORACH HOLDINGS LTD | SC413557 | 21/12/2011 | 31/07/2018 | Amber |
| CHAORACH HYDRO LIMITED | SC440285 | 03/07/2014 | 01/08/2018 | Bronze |
| CHONAIS HOLDINGS LIMITED | 08584719 | 11/10/2013 | 03/08/2016 | One Red Flag |
| CHONAIS HYDRO LIMITED | SC440326 | 11/10/2013 | 03/08/2016 | Silver |
| CHONAIS RIVER HYDRO LIMITED | 09295365 | 02/04/2015 | 03/08/2016 | One Red Flag |
| COILTIE HYDRO LIMITED | SC399361 | 19/06/2014 | 16/01/2015 | One Red Flag |
| COMMUNITY ENERGY SCOTLAND LIMITED | SC333698 | 20/02/2008 | 25/08/2009 | Silver |
| COMMUNITY ENERGY SCOTLAND TRADING LIMITED | SC349233 | 29/09/2008 | 25/11/2009 | Bronze |
| CONRAD (LILLYHALL) LIMITED | SC493107 | 10/12/2014 | 02/04/2015 | One Red Flag |
| COULAGS HYDRO LTD | SC489741 | 24/10/2014 | 24/09/2018 | Bronze |
| ETIVE GRIDCO LTD | SC489749 | 17/07/2019 | 23/03/2021 | One Red Flag |
| 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 | 08/07/2019 | Bronze |
| GHH HOLDCO LTD | SC606807 | 30/08/2018 | 23/03/2021 | One Red Flag |
| GLEANN NAM FIADH HYDRO LTD | SC399455 | 08/07/2019 | 08/07/2019 | Bronze |
| GREEN HIGHLAND HYDRO POWER LIMITED | SC493110 | 10/12/2014 | 02/04/2015 | Dissolved |
| GREEN HIGHLAND RENEWABLES (LEDGOWAN) LIMITED | SC376860 | 11/11/2013 | 08/09/2016 | Silver |
| GREEN HIGHLAND RENEWABLES (LOCH ARKAIG) LIMITED | SC452999 | 24/06/2013 | 31/07/2018 | One Red Flag |
| GREEN HIGHLAND RENEWABLES LTD | SC315779 | 18/12/2011 | 24/09/2018 | Silver |
| GREEN HIGHLAND SHENVAL LIMITED | SC440471 | 16/01/2013 | 01/04/2015 | Silver |
| HIGHLANDS & ISLANDS COMMUNITY ENERGY COMPANY LIMITED | SC276833 | 01/01/2005 | 06/08/2008 | Not Trading |
| KELTNEYBURN HYDRO LTD | SC237428 | 08/07/2019 | 08/07/2019 | Silver |
| LIATRIE BURN HYDRO LTD | SC489734 | 24/10/2014 | 31/07/2018 | One Red Flag |
| LOCHABER 2 HYDRO LTD | SC606808 | 08/07/2019 | 08/07/2019 | Dissolved |
| LOCHABER HYDRO LTD | SC510759 | 14/07/2015 | 24/09/2018 | Bronze |
| MULLARDOCH HYDRO LTD | SC493101 | 08/07/2019 | 08/07/2019 | Bronze |
| NATHRACH HYDRO LTD | SC519092 | 29/10/2015 | 24/09/2018 | Bronze |
| ROROYERE HYDRO LTD | SC357527 | 17/07/2019 | 23/03/2021 | Silver |
| SHENVAL HYDRO LTD | SC489744 | 24/10/2014 | 24/09/2018 | Bronze |