- Aker Solutions
- Air Liquide
- Dakota Gasification Company
- ExxonMobil
- Fluor Corporation
- General Electric
- Halliburton
- Honeywell International Inc.
- Japan CCS Company
- Mitsubishi Heavy Industries Ltd
- NRG Energy Inc.
- Schlumberger Limited
- Royal Dutch Shell PLC
- Siemens AG
- Linde
- LanzaTech
- Occidental Petroleum Corporation