Modellers' Exchange Workshop: Role of green hydrogen in future decarbonised and optimised European energy systems

RGI in collaboration with Hitachi Energy, and with support of the European Environmental Bureau (EEB), organised a Modellers’ Exchange Workshop focusing on the role of green hydrogen towards climate neutrality.

Achieving climate neutrality, necessitates the consideration of different technologies.

On the one hand renewables-based, direct electrification gathers consensus and should be prioritised, as the most cost- and resource-efficient way to decarbonise end-users.

On the other, green hydrogen will play a role in specific applications in hard-to-electrify sectors and as long-term storage.

But what are the impacts of green hydrogen deployment on the energy system? What are the infrastructural needs? And what are the barriers and challenges lying ahead?

With these questions in mind and drawing upon previous successful exchanges with energy modellers, RGI facilitated the Modellers' Exchange Workshop “Towards climate neutrality: Role of green hydrogen in future decarbonised and optimised European energy systems”.

The event was organised within the framework of the Paris Agreement Compatible (PAC) Scenario project, in collaboration with Hitachi Energy and with the support of the European Environmental Bureau (EEB), a PAC project partner.

A diverse group of about 20 participants, including representatives from the energy modelling community, NGOs, grid operators and demand-side, shared their perspective into the topic.

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Serving as a platform for experts and stakeholders to share their knowledge and exchange ideas, the workshop also addressed:

  • The green hydrogen targets envisaged in the REPowerEU by 2030 and the impacts on the European energy system;
  • Different perspectives on the barriers, drivers and opportunities related to the deployment, transport and uptake of green hydrogen;
  • Potential solutions, including policy, regulatory and governance frameworks, that would enable a swift, cost- and resource-efficient decarbonisation;
  • The needs across the green hydrogen value chain, including related energy infrastructure as well as potential trade-offs.

Please find below the list of participating organisations, the presentation of the PAC project partners, and the workshop agenda.

Participant organisations

  • Artelys
  • BELLONA Europa
  • Breakthrough Energy
  • CAN Europe
  • Climact
  • Deutsche Zentrum für Luft- und Raumfahrt (DLR)/ German Aerospace Center
  • Eurelectric
  • Eurofer
  • European Environmental Bureau
  • European Scientific Advisory Board on Climate Change
  • Hitachi Energy
  • Open Energy Transition
  • Renewables Grid Initiative
  • TransnetBW
  • Transport&Environment
  • TU Berlin


Master presentation with input from RGI, CAN Europe and EEB


Networking lunch and registration


Modellers’ Exchange Workshop

13:30 – 14:00

Welcome, agenda and the workshop’s objectives

Renewables Grid Initiative and European Environmental Bureau

14:00 – 14:20

Role of green hydrogen in future decarbonised and optimised European energy systems

Andrzej Ceglarz (RGI) and Alexandre Oudalov (Hitachi Energy)

14:20 – 14:40

The need for hydrogen infrastructure in 2030 – reality checks

Paul Brière (Artelys)

14:40 – 15:00

Energy needs for the decarbonisation pathway of the European steel industry

Jean Theo Ghenda (EUROFER)

15:00 – 15:45


15:45 – 16:00

Coffee break

16:00 – 16:20

Impacts of the EU H2 and e-fuels targets

Simon Suzan (Transport & Environment)

16:20 – 16:40

Decarbonising Europe: The Interplay of Power Transmission and Hydrogen Networks

Elisabeth Zeyen (TU Berlin)

16:40 – 17:20


17:20 – 17:30

Wrap-up and outlook



Dr. Andrzej Ceglarz
Director - Energy Systems

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t: +49 30 233211014

Léa Hayez
Manager - Energy Systems

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t: +49 30 2332 11032

Alexandros Fakas Kakouris
Senior Manager - Energy and Policy Systems

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t: +49 30 2332 11021

RGI gratefully acknowledges the EU LIFE funding support:

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Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the LIFE Programme. Neither the European Union nor the granting authority can be held responsible for them.