Beyond green hydrogen - A multitude of electricity-based energy carriers and feedstocks are essential to reach climate neutrality by 2050 and limit the increase in mean global temperature above pre-industrial levels to 1.5 °C


In recent years, countries all around the globe have recognised the central role of renewable electricity-based hydrogen as well as other renewable electricity-based energy carriers and feedstocks from Power-to-X (PtX) processes – also known as e-fuels, e-chemicals, powerfuels, or electrofuels. The European Union, as well as 17 countries, have published national hydrogen strategies. In additional 36 countries, hydrogen strategies are either in preparation or in discussion.

This development is reflected in several global energy system modelling studies exploring pathways consistent with reaching climate neutrality by 2050. Some of these studies highlight the importance of powerfuels and their contribution to reaching net-zero emissions. However, major Integrated Assessment Models such as the ones underlying the IPCC AR6 lack the presence of critical electricity-based energy carriers and feedstocks beyond hydrogen, thereby creating a substantial blind spot in the discourse on climate neutrality.

We therefore call

(I)    for policymakers to take action to accelerate the ramp-up of PtX production capacities, as well as the market integration of carbon capture and utilisation (CCU) technologies


(II)    for the research community to integrate renewable electricity-based energy carriers and feedstocks beyond hydrogen in energy system models, on a global but also regional and national level.

We, The Global Alliance Powerfuels and its members, together with

  • Prof. Dr. Poul Alberg Østergaard, Professor in Energy Planning, Aalborg University
  • Prof. Dr. Henrik Lund, Professor in Energy Planning, Aalborg University
  • Prof. Dr. Brian Vad Mathiesen, Professor in Energy Planning and Renewable Energy Systems, Aalborg University
  • Dr. Anastasios Perimenis, Secretary General, CO2 Value Europe
  • Dr. Andreas Förster, Executive Director, DECHEMA e.V.
  • Dr. Jan Mertens, Chief Science Officer, ENGIE
  • Dr. Carina Faber, Senior Research Engineer and Project Manager, ENGIE
  • Dr. Laurent Baraton, Senior Research Engineer and Project Manager, ENGIE
  • Dr. Herve Bercegol, Senior Scientist, French Alternative Energies and Atomic Energy Commission (CEA)
  • Dr. Vincent Artero, Research Director, French Alternative Energies and Atomic Energy Commission (CEA)
  • Janice Lin, Founder and President, Green Hydrogen Coalition
  • Prof. Dr.-Ing. Jens Schneider, Professor for Interconnected Energy Systems, HTWK Leipzig
  • Léo Laroche, Business Developer Germany, Hynamics
  • Prof. Dr. Christian Breyer, Professor for Solar Economy, Lappeenranta-Lahti University of Technology LUT
  • Dr.Sc. Petteri Laaksonen, Research Director, LUT School of Energy Systems, Lappeenranta-Lahti University of Technology LUT
  • Prof. Dr.-Ing. Michael Sterner, Professor for Energy Storage, Hydrogen/Power-to-X and Renewable Energy Systems, Ostbayerische Technische Hochschule Regensburg (OTH Regensburg)
  • Prof. Alberto Cuoci, Associate Professor, Department of Chemistry, Materials, and Chemical Engineering, Polytechnic University of Milan
  • Mr. Igor Luchs, Senior Manager, Robert Bosch Gmb
  • Dr. Pietro Paolo Ciottoli, Assistant Professor, Department of Mechanical and Aerospace Engineering, Sapienza Università di Roma
  • Mr. John Grimes, Chief Executive, Hydrogen Australia, Smart Energy Council
  • Dr. Frédéric Chandezon, Scientist, French Alternative Energies and Atomic Energy Commission (CEA) & Deputy Coordinator, SUNERGY initiative
  • Prof. Alessandro Parente, Professor in Chemical Engineering, Université libre de Bruxelles
  • Dr. Riccardo Malpica Galassi, PhD in Aeronautical Engineering, Université libre de Bruxelles
  • Prof. Carmine Fallico, Associate Professor for Hydraulic Engineering, University of Calabria
  • Dr. Salvatore Iavarone, Research Associate, Department of Engineering, University of Cambridge
  • Dr. Jannik Haas, Adjunct Senior Fellow, Department of Civil and Natural Resources Engineering, University of Canterbury
  • Prof. Joanna Kargul, Associate Professor, Head of Solar Fuels Lab – Centre of New Technologies, University of Warsaw

Declare our common and shared views

  1. Renewable electricity-based energy carriers and feedstocks will be essential for reaching GHG emission reduction targets across several sectors, in particular the transport sector, such as in aviation and shipping, as well as the chemical sector, and to some extent industrial applications with high temperature heat requirements.
  2. Powerfuels are a central pillar for the transformation to, and an indispensable component of, energy systems based on 100% renewable energy.
  3. A failure to ramp-up the market for powerfuels would constitute a risk for the energy transition towards a net-zero emissions energy system. This concerns not only the development and scaling of renewable hydrogen technologies, but also technologies for processing renewable hydrogen to produce other powerfuels, and for the use of CO2 from sustainable sources as a feedstock for the production of carbon-based powerfuels.
  4. Renewable electricity will cover a significantly increasing share of the global energy supply in the future. Aside from supplying energy for direct electrification, generation capacities of renewable electricity, in particular solar and wind, will also massively have to be expanded for the production of powerfuels. This will be critical for several industrial processes and specific energy demand technologies as those can only become carbon-neutral by the use of renewable energy carriers such as synthetic hydrocarbons or ammonia.
  5. Considerable synergies can be derived when streamlining and integrating the market ramp-up of powerfuels and renewable electricity. Studies that investigate the transition to global climate neutrality and 100% renewable energy systems increasingly acknowledge the role of renewable hydrogen. However, further research is needed to differentiate between the contribution of different powerfuels (e.g. hydrogen, e-ammonia, e-methanol, e-kerosene, e-methane) towards reaching net-zero emissions across all sectors.
  6. Carbon Capture and Storage (CCS) technologies find a dominant presence across several energy system modelling scenarios, while Carbon Capture and Utilization technologies such as DAC and synthesis technologies are underexplored. The role of CCU technologies should be featured more prominently in research.

Based on the aforementioned common and shared views,

We urge policymakers to

  1. Make the establishment of powerfuels as cost-competitive alternatives to fossil energy carriers a political priority.
  2. Take measures to close the gap between planned and realised powerfuels projects. Production volumes and market shares of powerfuels are currently still miniscule. However, the global pipeline is significant and growing steadily, at 250 GW as of August 2021 for green hydrogen projects alone.

And to this end, work towards

  1. Multilateral cooperation to expand CO2 pricing schemes across sectors and regions to establish long-term market incentives for the transition towards a fully renewable energy supply, and to internalise the costs of environmental damage.
  2. Demand-side incentives and/or mandates for the use of renewable hydrogen and other powerfuels (e.g. blending or use quotas, Contracts for Difference etc.).
  3. International partnerships to ramp-up renewable electricity generation, as well as production capacities of renewable hydrogen and its derived products such as e-ammonia and e-kerosene.
  4. Transparent, standardised and globally recognised certification of the ‘green’ property of powerfuels to facilitate their tradability and ensure that strict sustainability criteria (e.g. regarding their life-cycle greenhouse gas emissions, as well as the renewable electricity and carbon sources used for their production) are met.

This Declaration is supported by the following organisations and companies

For remarks and questions, please do not hesitate to contact us at powerfuels(at)

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Infographic on the definition of powerfuels, including various possible powerfuels processes, end products, and exemplary applications