- Babcock & Wilcox Enterprises Inc.
- Ramboll Group
- Veolia Group
- Babcock & Wilcox Volund A/S
- Hitachi Zosen Inova AG
- Suez Environnement
- China Everbright International Limited
- Covanta Holding Corporation
- Amec Foster Wheeler
- Abu Dhabi National Energy Company PJSC (Taqa)