1. Ansaldo Energia S.p.A.
2. Bergey Windpower Co.
3. Bharat Heavy Electricals Limited
4. Centrax Ltd
5. Dongfang Turbine Co.Ltd.
6. Doosan Enerbility Co. Ltd.
7. Elliott Group
8. Enel S.p.a.
9. Enercon GmbH
10. Envision Group
11. General Electric Company
12. GKN Ltd.
13. Harbin Turbine Co. Ltd
14. Hitachi
Ltd.
15. Kawasaki Heavy Industries
Ltd.
16. MAN Energy Solutions SE
17. Mitsubishi Heavy Industries
18. Nordex SE
19. OPRA by Destinus
20. Rolls Royce PLC
21. Sany Heavy Industry Co. Ltd.
22. Siemens AG
23. Solar Turbines Incorporated by Caterpillar Inc.
24. Vestas Wind Systems A/S
25. Xinjiang Goldwind Science & Technology Co. Ltd.