| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Driveline Direct Ltd | NI033703 | 29/04/2002 | Dissolved |
| ELECTRICITY SUPPLY LIMITED | NI070275 | 08/09/2008 | Dissolved |
| Easycredit Online Ltd | NI039522 | 29/04/2002 | Dissolved |
| Electricity Association Ltd | 02367010 | 20/05/2003 | Dissolved |
| Nie Quest Trustees Ltd | NI033262 | 21/11/1997 | Dissolved |
| Nie Quest Trustees Ltd | NI033262 | 11/01/2002 | Dissolved |
| POWER NI SUPPLY LIMITED | NI036545 | 22/02/2002 | Dissolved |
| VIRIDIAN CAPITAL (UK) LIMITED | NI032564 | 22/02/2002 | Dissolved |
| VIRIDIAN CORPORATION LIMITED | NI031705 | 22/02/2002 | Dissolved |
| VIRIDIAN GROUP HOLDCO 2 LIMITED | NI641737 | 26/10/2016 | Dissolved |
| VIRIDIAN GROUP NEWCO 1 LIMITED | 10447445 | 26/10/2016 | Dissolved |
| VIRIDIAN GROUP NEWCO 2 LIMITED | 10448086 | 26/10/2016 | Dissolved |
| VIRIDIAN TELECOMS LIMITED | NI032566 | 22/02/2002 | Dissolved |
| VIRIDIAN VENTURES LIMITED | NI070643 | 13/10/2008 | Dissolved |
| Viridian International Ltd | NI040302 | 31/01/2002 | Dissolved |
| Viridian Windpower Ltd | 03684044 | 31/01/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Aurora (Ireland) Ltd | NI035155 | 01/03/2002 | 05/12/2003 | Dissolved |
| Aurora SX3 Ltd | NI035157 | 01/03/2002 | 15/12/2003 | Dissolved |
| CAPITAL PENSIONS MANAGEMENT LIMITED | NI033940 | 01/04/1998 | 21/12/2010 | Silver |
| CAPITAL PENSIONS MANAGEMENT LIMITED | NI033940 | 29/04/2002 | 21/12/2010 | Silver |
| CLONDERMOT WIND LIMITED | NI070097 | 13/10/2008 | 18/01/2011 | Bronze |
| CRIGHSHANE AND CHURCH HILL FUNDING LTD | NI070585 | 13/10/2008 | 23/09/2010 | Dissolved |
| CRIGHSHANE AND CHURCH HILL HOLDCO LTD | NI033361 | 22/02/2002 | 06/02/2008 | Dissolved |
| D.P.S. SCOTLAND LIMITED | SC141315 | 01/03/2002 | 25/04/2005 | Dissolved |
| EI VENTURES LIMITED | 05879138 | 30/01/2007 | 15/04/2011 | Bronze |
| ELECTRICINVEST ACQUISITIONS LIMITED | 05879104 | 30/01/2007 | 15/04/2011 | Silver |
| ELECTRICINVEST HOLDING COMPANY LIMITED | 05879146 | 30/01/2007 | 15/04/2011 | Silver |
| ELECTRICITY SUPPLY LIMITED | NI070275 | 08/09/2008 | 14/04/2011 | Dissolved |
| ENERGIA CAPITAL LIMITED | NI032456 | 29/05/1997 | 14/04/2011 | Bronze |
| ENERGIA GROUP NI HOLDINGS LIMITED | NI033250 | 14/11/1997 | 05/04/2011 | Bronze |
| ENERGIA NI STORAGE LIMITED | NI641736 | 26/10/2016 | 01/08/2019 | One Red Flag |
| ENERGIA POWER RESOURCES LIMITED | 03579116 | 31/01/2002 | 06/02/2008 | Not Trading |
| ENERGIA POWER RESOURCES LIMITED | 03579116 | 31/01/2002 | 06/02/2008 | Not Trading |
| ENERGIA PROPERTIES LIMITED | NI032280 | 17/04/1997 | 14/04/2011 | Silver |
| FIRST SOFTWARE LIMITED | 03069878 | 28/06/2002 | 25/04/2005 | Dissolved |
| FIRST SOFTWARE UK LIMITED | 03041188 | 26/06/2002 | 25/04/2005 | Dissolved |
| Lg Consultants Ltd | 02349166 | 26/06/2002 | 25/04/2005 | Dissolved |
| MICROCENTRE LIMITED | SC066117 | 01/03/2002 | 25/04/2005 | Dissolved |
| NIE ENTERPRISES LIMITED | NI026727 | 22/02/2002 | 29/02/2008 | Dissolved |
| NIE LIMITED | NI027040 | 27/11/1992 | 16/12/2008 | Gold |
| NIE LIMITED | NI027040 | 22/02/2002 | 16/12/2008 | Gold |
| NIE POWER LIMITED | NI027395 | 22/02/2002 | 29/02/2008 | Dissolved |
| NORTHERN IRELAND ELECTRICITY LIMITED | NI026892 | 18/09/1992 | 01/03/2007 | Amber |
| NORTHERN IRELAND ELECTRICITY LIMITED | NI026892 | 22/02/2002 | 29/02/2008 | Amber |
| Nie Connect Ltd | NI040390 | 22/02/2002 | 20/01/2003 | Dissolved |
| POWER NI ENERGY LIMITED | NI027394 | 05/03/2008 | 14/04/2011 | Silver |
| SOLUTIONS SHELF LIMITED | NI032562 | 29/04/2002 | 13/06/2002 | Dissolved |
| SX3 LIMITED | NI032978 | 01/03/2002 | 05/12/2003 | Dissolved |
| Scp(Specialist Computer Programming)ltd | NI031669 | 01/03/2002 | 15/12/2003 | Dissolved |
| VIRIDIAN CAPITAL (UK) LIMITED | NI032564 | 19/06/1997 | 14/04/2011 | Dissolved |
| VIRIDIAN ENTERPRISES LIMITED | NI032955 | 22/09/1997 | 14/04/2011 | Dissolved |
| VIRIDIAN TELECOMS LIMITED | NI032566 | 19/06/1997 | 14/04/2011 | Dissolved |
| XBS LIMITED | 02651156 | 01/03/2002 | 25/04/2005 | Dissolved |