1. AGL Energy Ltd.
2. Andritz AG
3. Black & Veatch Holding Company
4. Duke Energy Corporation
5. Electric Power Development Co. Ltd.
6. Enel S.p.A.
7. Eskom Holdings SOC Ltd.
8. General Electric Company
9. Genex Power Limited
10. Greenko Group
11. Hitachi Energy
12. Hydro-Electric Corporation
13. Litostroj Power d.o.o.
14. Nevada Hydro Corporation
15. Obermeyer Hydro Inc.
16. Schluchseewerk AG
17. Siemens AG
18. Stantec Inc.
19. Sunshine Hydro
20. Tata Power Company Limited
21. Toshiba Corporation
22. Voith GmbH & Co. KGaA