1. Air Products and Chemicals Inc.
2. Aker Solutions ASA by Aker Holding
3. Babcock & Wilcox Enterprises Inc.
4. Chevron Corporation
5. Climeworks AG
6. Dakota Gasification Company by Basin Electric Power Cooperative
7. Exxon Mobil Corporation
8. General Electric Company
9. Global Thermostat
10. Halliburton Energy Services Inc.
11. Hitachi
Ltd.
12. Honeywell International Inc.
13. John Wood Group PLC
14. L’air Liquide S.A.
15. NRG Energy Inc.