| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CELTIC SEA POWER LIMITED | 10166467 | 01/03/2021 | Silver |
| WAVE HUB GRID CONNECTION LIMITED | 13249348 | 30/07/2021 | Not Trading |
| WESTERN RENEWABLE ENERGY PARTNERS LIMITED | 07277095 | 08/06/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABERDEEN OFFSHORE WIND FARM LIMITED | SC278869 | 01/01/2014 | 22/08/2016 | Bronze |
| AVIATION INVESTMENT FUND COMPANY LIMITED | 06808528 | 20/04/2014 | 10/08/2018 | Silver |
| CLASHINDARROCH WIND FARM LIMITED | 05358030 | 01/01/2014 | 30/09/2017 | Silver |
| EAST ANGLIA OFFSHORE WIND LIMITED | 06990367 | 01/01/2014 | 01/08/2018 | Silver |
| EAST ANGLIA ONE LIMITED | 07366753 | 01/01/2014 | 24/03/2015 | Silver |
| EAST ANGLIA THREE LIMITED | 08141208 | 01/01/2014 | 15/02/2016 | Amber |
| GREEN PENINSULA RENEWABLES LIMITED | 03902637 | 09/03/2000 | 31/12/2003 | Dissolved |
| KENTISH FLATS LIMITED | 04130301 | 01/01/2014 | 30/09/2017 | Silver |
| LLANERFYL ACCESS ROAD CONSORTIUM LIMITED | 06118626 | 01/01/2014 | 23/02/2018 | Not Trading |
| NANT BACH WIND FARM LIMITED | 06834016 | 01/01/2014 | 30/09/2017 | Dissolved |
| NANT Y MOCH WIND FARM LIMITED | 03494533 | 01/01/2014 | 30/09/2017 | Dissolved |
| NORFOLK BOREAS LIMITED | 03722058 | 01/01/2014 | 30/09/2017 | Amber |
| NORFOLK VANGUARD WEST LIMITED | 08141115 | 01/01/2014 | 30/09/2017 | Amber |
| NUON UK LTD | 03446477 | 01/01/2014 | 01/08/2018 | Gold |
| ORMONDE ENERGY LIMITED | 04874027 | 01/01/2014 | 17/12/2015 | Gold |
| OURACK WIND FARM ONE LIMITED | 05532689 | 01/01/2014 | 30/09/2017 | Not Trading |
| OURACK WIND FARM TWO LIMITED | 05475126 | 01/01/2014 | 30/09/2017 | Not Trading |
| PARC CYNOG WIND FARM LIMITED | 02840895 | 01/01/2014 | 30/09/2017 | Gold |
| PEN Y CYMOEDD WIND FARM LIMITED | 03494498 | 01/01/2014 | 30/09/2017 | Bronze |
| PENDINE WIND FARM LIMITED | 03292728 | 01/01/2014 | 30/09/2017 | Bronze |
| RAY WIND FARM LIMITED | 09397602 | 20/01/2015 | 30/09/2017 | Bronze |
| SWINFORD WIND FARM LIMITED | 06941519 | 01/01/2014 | 30/09/2017 | Silver |
| THANET OFFSHORE WIND LIMITED | 04512200 | 01/01/2014 | 30/09/2017 | Silver |
| VATTENFALL HEAT UK LIMITED | 02951085 | 01/01/2014 | 30/09/2017 | One Red Flag |
| VATTENFALL NETWORK SOLUTIONS LTD | 02692708 | 01/01/2014 | 03/04/2017 | Gold |
| VATTENFALL NETWORKS LTD | 02731769 | 01/01/2014 | 03/04/2017 | Amber |
| VATTENFALL SCOTLAND LIMITED | SC380657 | 21/09/2015 | 30/09/2017 | Not Trading |
| VATTENFALL UK SALES LIMITED | 05461926 | 01/01/2014 | 30/09/2017 | Insolvent |
| VATTENFALL WIND POWER LTD | 06205750 | 01/01/2014 | 01/08/2018 | Gold |
| WAVE HUB LIMITED | 07875270 | 01/07/2019 | 30/07/2021 | Amber |