Pipeline blueprint for Greater Region hydrogen flows
HY4Link is designed to move renewable hydrogen from large-scale electrolysis clusters—including those at Belgian and German wind- and solar-powered sites—into industrial demand centres across the Greater Region. The pipeline will serve refineries preparing to produce SAF via Fischer-Tropsch synthesis, heavy-duty vehicle refuelling stations, and hard-to-abate industrial plants. With a capacity of 30 TWh per year, the system aims to lower the delivered cost of green hydrogen by eliminating trucking and reducing compression losses.
Project partners have completed pre-FEED studies and are now advancing regulatory filings in all four jurisdictions. Final investment decisions are expected in late 2027, with construction slated to begin in 2028 to meet the 2030 commissioning window. The routing prioritises existing industrial corridors to minimise land-use conflicts and accelerate permitting.
Aviation and transport decarbonisation nexus
Green hydrogen is a critical input for synthetic kerosene production under Power-to-Liquid pathways, which combine captured CO₂ with electrolytic hydrogen to create drop-in jet fuel. Airlines and freight operators are already testing AI-driven flight-planning tools to optimise SAF blend rates and reduce fuel burn, but scaling those operations depends on affordable, high-volume hydrogen supply. HY4Link’s 30 TWh annual capacity translates to enough hydrogen to support multiple gigawatt-scale e-fuel plants, each capable of producing hundreds of thousands of tonnes of SAF per year.
Beyond aviation, the pipeline will anchor hydrogen refuelling networks for long-haul trucks and support range-extender fuel-cell powertrains in buses and regional aircraft concepts. Luxembourg’s government has flagged HY4Link as a cornerstone of its transport-decarbonisation strategy, while Belgium and Germany view the project as essential for meeting 2030 renewable-energy targets under RED III.
Next steps and regulatory outlook
The consortium is engaging with the European Commission to secure Projects of Common Interest status, which would unlock streamlined cross-border permitting and access to Connecting Europe Facility grants. Parallel discussions with electrolyser manufacturers are under way to ensure offtake agreements align with pipeline commissioning timelines. If approvals proceed on schedule, HY4Link will be one of Europe’s first operational multi-country hydrogen trunk lines, setting a template for similar networks linking Iberia, the North Sea and Central Europe.
Sources
- Electrolysis Platform—Efficient Manufacture of Hydrogen and Chemical Products
- Green hydrogen production and deployment: opportunities and challenges
- Green hydrogen production via electrolysis: Materials innovation, system integration, and global deployment pathways
Featured image via Unsplash.
