| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| SSE AIRTRICITY ENERGY SERVICES (NI) LIMITED | NI620707 | 08/11/2016 | Dissolved |
| SSE AIRTRICITY ENERGY SUPPLY (NI) LIMITED | NI041956 | 29/11/2013 | Silver |
| SSE AIRTRICITY GAS SUPPLY (NI) LIMITED | NI032810 | 22/06/2012 | Bronze |
| WILSON BIO-CHEMICAL LIMITED | 05849628 | 20/06/2015 | One Red Flag |
| WILSON BIOTECH LIMITED | 09588523 | 13/05/2015 | Silver |
| WILSON STEAM STORAGE LIMITED | 06268900 | 23/03/2015 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AIRTRICITY UK WINDFARM HOLDINGS LIMITED | NI056471 | 13/09/2005 | 29/09/2008 | Dissolved |
| PHARMAPAC (U.K.) LIMITED | 03201556 | 27/03/2008 | 10/06/2008 | Silver |
| PHARMAPAC HOLDINGS LIMITED | NI067358 | 27/03/2008 | 19/12/2014 | Bronze |
| SLIEVE DIVENA WIND FARM LIMITED | NI060982 | 05/12/2007 | 29/09/2008 | Gold |
| SSE AIRTRICITY ENERGY SUPPLY (NI) LIMITED | NI041956 | 21/05/2003 | 29/09/2008 | Silver |
| SSE AIRTRICITY GAS (NI) LIMITED | NI611747 | 22/06/2012 | 29/03/2019 | Dissolved |
| SSE RENEWABLES ONSHORE WINDFARM HOLDINGS LIMITED | NI049557 | 24/11/2005 | 15/03/2013 | One Red Flag |
| SSE RENEWABLES SERVICES (UK) LIMITED | NI043294 | 01/04/1956 | 01/07/2008 | Silver |
| TAPPAGHAN WIND FARM (N.I.) LIMITED | NI047999 | 24/09/2003 | 30/09/2005 | Gold |