Regulatory drivers and compliance pressure

The Revised Renewable Energy Directive (RED III) mandates that EU member states reach a 42.5 per cent share of renewable energy by 2030, with sub-targets for transport and industry. Renewable hydrogen—and the pipelines to move it—will be essential to meeting those obligations, especially in aviation (ReFuelEU’s rising SAF blending mandates) and heavy transport. HY4Link, a proposed cross-border network in the Greater Region, sits at the intersection of these compliance calendars: airlines and industrial users face escalating penalties if they fail to source certified renewable fuels, and hydrogen infrastructure becomes a bottleneck.

At the same time, the 2035 deadline for new internal-combustion-engine passenger-car sales raises demand for Power-to-Liquid e-fuels in legacy fleets and niche segments, further straining hydrogen supply chains. Compliance officers and marketing directors at refiners, airlines, and automotive OEMs are already mapping 2030–2032 offtake volumes, yet few firm contracts have been publicly announced for HY4Link capacity.

Financing gaps and commercial uncertainty

Large-scale hydrogen-pipeline projects typically require multi-billion-euro capital commitments and anchor offtake agreements before reaching final investment decision. To date, HY4Link has not disclosed binding capacity reservations or a confirmed construction budget. Industry observers note that similar cross-border gas-infrastructure ventures—such as those repurposing natural-gas lines for hydrogen blending—have faced protracted permitting, cost overruns, and shifting political priorities.

Without transparent pricing mechanisms or indexed tariffs, potential shippers remain wary. Electrolysis operators need long-term certainty on pipeline tariffs to model project economics, while off-takers in aviation and chemicals demand proof of on-time delivery before locking in premium-priced renewable hydrogen. The lack of public funding announcements or EU Important Projects of Common European Interest (IPCEI) co-financing further clouds the commercial outlook.

Demand signals from ReFuelEU and CBAM

ReFuelEU Aviation will require 2 per cent SAF blending from 2025, rising to 6 per cent by 2030 and 20 per cent by 2035; Power-to-Liquid e-fuels count toward those quotas at higher multipliers, creating a price premium for certified green hydrogen feedstock. Similarly, the Carbon Border Adjustment Mechanism (CBAM) will penalise imports of hydrogen or ammonia produced with high embedded emissions, advantaging EU-sourced renewable molecules.

These policy levers should, in theory, generate strong demand signals for HY4Link capacity. In practice, the pipeline’s ability to attract shipper commitments hinges on transparent capacity allocation, competitive tariffs, and credible commissioning dates—none of which have been firmly established. Until operators publish binding ship-or-pay contracts and detailed construction milestones, the project remains a speculative piece of Europe’s hydrogen puzzle rather than a bankable infrastructure asset.

Sources

• IATA – Sustainable Aviation Fuel (SAF)
• What is sustainable aviation fuel and how is it made? | World Economic Forum
• Sustainable Aviation Fuel (SAF) Outlook

Featured image via Unsplash.