?- Air Liquide
- Aker Solutions
- Baker Hughes Company
- Dakota Gasification Company
- Exxon Mobil Corporation
- Fluor Corporation
- General Electric
- Halliburton
- Honeywell International Inc.
- Japan CCS Co. Ltd.
- LanzaTech
- Linde plc
- Mitsubishi Heavy Industries Ltd
- NRG Energy Inc.
- Occidental Petroleum Corporation
- Shell plc.
- Siemens Energy
- SLB