1. Acciona Sa
2. Ameresco Inc
3. Babcock & Wilcox Enterprises Inc
4. Cemex
5. Drax Group Plc
6. Enel Green Power
7. Envitec Biogas Ag
8. Enviva Partners Lp
9. General Electric Company
10. Hitachi Zosen Corporation
11. Mitsubishi Heavy Industries Ltd
12. ?rsted A/S
13. Ra?zen Sa
14. Ramboll Group As
15. Siemens Energy Ag