1. Aggreko PLC
2. Burns & McDonnell
3. Caterpillar Inc.
4. Cummins Inc.
5. Generac Holdings Inc.
6. General Electric Company
7. Generator Source
LLC
8. GENESAL ENERGY IB
S. A.
9. HHI Engine & Machinery
10. Himoinsa S.L.
11. J C Bamford Excavators Ltd.
12. Kohler Co.
13. MAN Energy Solutions SE
14. Mitsubishi Heavy Industries
Ltd.
15. PDP energy
16. Rolls-Royce PLC
17. Wartsila Corporation
18. Weg S.A.
19. Wipro Inc.