1. Ameresco Inc
2. Babcock & Wilcox Enterprises Inc
3. E.On Energy
4. General Electric Company
5. Mitsubishi Heavy Industries Ltd
6. Orsted
7. Ramboll Group
8. Suez Environment Company
9. Thermax Ltd
10. Valmet Oyj
11. Vattenfall Ab
12. Veolia Environment Sa
13. Xcel Energy Inc