| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CAMBRIAN RENEWABLE ENERGY LIMITED | 04803358 | 01/05/2017 | 06/03/2020 | Silver |
| CARRINGTON POWER LIMITED | 04706728 | 26/01/2015 | 06/03/2020 | Silver |
| COOLKEERAGH ESB LIMITED | NI042138 | 01/05/2017 | 21/04/2020 | Silver |
| CORBY POWER LIMITED | 02329494 | 01/05/2017 | 06/03/2020 | Gold |
| CROCKAGARRAN WIND FARM LTD | NI065453 | 01/05/2017 | 06/03/2020 | Silver |
| CROCKDUN WINDFARM (NI) LIMITED | NI633987 | 01/05/2017 | 06/03/2020 | Dissolved |
| CURRYFREE WIND FARM LIMITED | NI068191 | 01/05/2017 | 06/03/2020 | Silver |
| DEVON WIND POWER LIMITED | 03536976 | 01/05/2017 | 06/03/2020 | Bronze |
| ECO2 CAMBRIAN LIMITED | 05504383 | 01/05/2017 | 06/03/2020 | Dissolved |
| ELECTRIC IRELAND LIMITED | 07481435 | 26/01/2015 | 14/04/2020 | Dissolved |
| ESB ASSET DEVELOPMENT UK LIMITED | 06925667 | 26/01/2015 | 06/03/2020 | Gold |
| ESB ELECTRIC IRELAND LIMITED | 07481410 | 26/01/2015 | 14/04/2020 | Dissolved |
| ESB GROUP (UK) LIMITED | 04182868 | 26/01/2015 | 06/03/2020 | Amber |
| ESBII UK LIMITED | 04048938 | 26/01/2015 | 06/03/2020 | Silver |
| ESBNI LIMITED | NI603561 | 26/01/2015 | 01/07/2020 | Bronze |
| FACILITY MANAGEMENT UK LIMITED | 04048782 | 26/01/2015 | 06/03/2020 | Gold |
| HUNTER'S HILL WIND FARM LIMITED | NI067362 | 01/05/2017 | 06/03/2020 | Silver |
| KNOTTINGLEY POWER LIMITED | 05902446 | 29/07/2016 | 14/01/2019 | Silver |
| PLANET 9 ENERGY LIMITED | 10167383 | 21/02/2017 | 06/05/2020 | Bronze |
| TILBURY GREEN POWER HOLDINGS LIMITED | 09419098 | 01/05/2017 | 01/05/2017 | Silver |
| WEST DURHAM WIND FARM (HOLDINGS) 2 LIMITED | 05654029 | 01/05/2017 | 06/03/2020 | Dissolved |
| WEST DURHAM WIND FARM (HOLDINGS) LIMITED | 06310696 | 01/05/2017 | 06/03/2020 | Dissolved |
| WEST DURHAM WINDFARM LIMITED | 03658399 | 01/05/2017 | 06/03/2020 | Silver |