1. AKSA Power Generation
2. Bharat Heavy Electricals Limited
3. Caterpillar Inc.
4. Cooper Corporation
5. Cummins Inc.
6. Generac Power Systems Inc.
7. General Electric Company
8. Hyosung Group
9. Kohler Co.
10. Mahindra & Mahindra Limited
11. Mitsubishi Heavy Industries
Ltd.
12. Parker-Hannifin Corporation
13. Rolls-Royce plc
14. Siemens AG
15. Toshiba Corporation