1. ABB Ltd.
2. Alstom SA
3. Bharat Bijlee Limited
4. General Electric Company
5. Hind Rectifiers Limited
6. Hitachi Energy Ltd.
7. International Electric Co. Ltd.
8. JST Transformateurs
9. Mitsubishi Electric Corporation
10. Neeltran Inc.
11. Schneider Electric SE
12. Siemens AG
13. Toshiba Corporation
14. Wilson Transformer Company