1. General Electric (GE)
2. Voith GmbH & Co. KGaA
3. Hitachi Mitsubishi Hydro Corporation
4. Toshiba America Energy Systems Corporation
5. Andritz AG
6. Nidec Industrial Solutions
7. OJSC Power Machines
8. WEG SA
9. Global Hydro Energy GmbH
10. Siemens AG