1. 2G Energy Inc.
2. ABB Ltd.
3. Allied Environmental Technologies Inc.
4. ALSTOM Holdings
5. ANDRITZ AG
6. BDR Thermea Group B.V
7. Caterpillar Inc.
8. Dalkia Aegis
EDF Group
9. General Electric Company
10. Kohler Co.
11. Mitsubishi Heavy Industries
Ltd.
12. Perry Process Equipment Ltd.
13. Rolls Royce PLC
14. Siemens AG
15. Tecogen Inc.