1. ABB Ltd.
2. Alstom
3. Bowers Electrical Ltd.
4. CG Power and Industrial Solutions Limited
5. COMEM Group
6. Dauer Manufacturing
7. Eaton Corporation PLC
8. General Electric Company
9. Hitachi Energy Ltd.
10. Howard Industries
11. IONATE Limited
12. JiangSu HuaPeng Transformer Co. Ltd.
13. Lester Electrical
14. Mitsubishi Electric Corporation
15. Ormazabal by Velatia
S.L.
16. Pioneer Transformers
17. Powerstar by EMSc (UK) Ltd.
18. PVJ Power
19. Qualitrol Company LLC
20. Schneider Electric
21. SGB-Smit Group
22. Siemens AG
23. Smart Glass Technologies
LLC
24. Westrafo S.r.l.
25. Wilson Transformer Company Pty Ltd.