1. Abb Ltd.
2. Andritz AG
3. Ansaldo Energia S.p.A.
4. Arkansas Electric Cooperative Corporation
5. Bharat Heavy Electricals Ltd.
6. Birr Machines AG
7. Chart Industries Inc.
8. Deprag Schulz Gmbh U. Co. KG
9. Doosan Group
10. Ebara Corporation
11. Flender International GmbH
12. Fuji Industries Co. Ltd.
13. General Electric Company
14. Harbin Turbine Co. Ltd.
15. Honeywell International Inc.
16. Japan Hydro-power Development Inc.
17. Meidensha Corporation
18. Mitsubishi Heavy Industries
Ltd.
19. Rolls Royce PLC
20. Siemens AG
21. Sollant Group
22. Sumitomo Corporation
23. Toshiba Corporation
24. WEG S.A.
25. Zichai Power Co. Ltd.