- AFEP – French Association of Large Companies
- Air Liquide
- BP
- Cembureau
- Cepi
- Drax Group
- EdF
- Enel
- Eni
- Eurometaux
- European Aluminium
- ExxonMobil
- Federation of German Industries (BDI)
- FuelsEurope
- Heidelberg Materials AG
- Metlen
- Norsk Hydro
- PGE – Polksa Grupa Energetyczna
- Repsol
- Syensqo
- Shell
- TotalEnergies
- Asian Development Bank
- Australia, Department of Foreign Affairs and Trade
- BDI, Federation of German Industries
- European Bank for Reconstruction and Development
- Électricité de France
- Enel
- Euroalliages
- Eurofer
- Eurometaux
- European Chemical Industry Council
- ExxonMobil
- Fertilizers Europe
- Finland, Ministry of Environment
- France, Ministry for the Ecological and Inclusive Transition
- FuelsEurope
- Germany, Ministry for the Environment, Nature Conservation, and Nuclear Safety
- Global Green Growth Institute
- Spain, Ministry for the Ecological Transition and the Demographic Challenge
- Grupa Azoty
- HeidelbergCement
- Institute for Global Environmental Strategies
- Italy, Ministry for the Environment, Land and Sea
- MetInvest
- New Zealand, Ministry for the Environment
- Norway, Ministry of Climate and Environment
- Oil and Gas Climate Initiative
- Solvay
- Swedish Energy Agency
- Switzerland, Federal Office for the Environment
- European Commission
- The World Bank Group
- Turkey, Ministry of Environment and Urbanisation
- United Kingdom, Department for Business, Energy and Industrial Strategy
- Supporting Members
- Project support