European refiners could drive green hydrogen momentum, with maritime sector playing important role

August 21, 2025, by Naida Hakirevic Prevljak

European refiners are expected to become significant producers and buyers of green hydrogen, with the maritime sector offering growth potential.

High costs have kept green hydrogen projects from taking off, but new regulations in the European Union’s (EU) refining sector offer a solution to launching this carbon-friendly technology at scale, according to a new Horizons report from Wood Mackenzie.

The report, “Isn’t it ironic? How Europe’s oil refiners could offer a route to scale up green hydrogen”, finds that European refiners are set to require ~0.5 million tonnes of green hydrogen annually by 2030 to comply with EU regulations, replacing about 30% of current CO2-emitting hydrogen production.

Refining represents one of the largest hydrogen opportunities globally, which, alongside ammonia and methanol production, accounts for 98% of current demand.

The latest revision of the EU’s Renewable Energy Directive (known as RED III), favors green hydrogen over blue hydrogen, helping to minimize the delays and cancellations now all too common when it comes to green hydrogen globally.

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“European refiners are set to become significant producers or buyers of green hydrogen, initially to decarbonise the refining sector and its derivatives as fuel for marine and aviation,” Alan Gelder, VP of Refining, Chemicals & Oil Markets, commented.

“Numerous green hydrogen projects have already targeted the sector.”

The report finds that of the 6 Mtpa of low-carbon hydrogen capacity that has taken a final investment decision (FID), European refineries have already committed more than $5 billion of capital.

Refiners demonstrate the strongest market appetite

Recent EU Hydrogen Bank auction results reveal refineries’ commitment to green hydrogen adoption, with the sector showing the highest willingness to pay premium prices at an average levelised cost of hydrogen of US$9.23/kg – demonstrating their requirement to meet regulatory mandates.

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This compares favorably with Wood Mackenzie’s asset-level modeling of refinery-targeted projects, which produces costs of US$7.04 to US$8.30/kg.

The encouraging market signals extend beyond pricing. Average green hydrogen costs dropped 18% in the latest EU auctions, with German bids falling more than 55%. However, progress remains uneven across the bloc, with slow national adoption of RED III legislation hampering project development in many member states.

Long-term growth lies in transport fuels

While refinery decarbonization offers the strongest near-term investment case, the marine and aviation sectors present massive long-term growth opportunities for green hydrogen derivatives.

Europe’s FuelEU Maritime Regulation and the International Maritime Organization’s Net Zero Framework are driving interest in hydrogen-derived marine fuels.

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“The opportunities for low-carbon hydrogen have come full circle,” Murray Douglas, Vice President of Hydrogen Research at Wood Mackenzie, said.

“The traditional sectors of refining, ammonia and methanol are showing the most progress, ahead of the many other new demand sectors being touted for hydrogen. Parts of the refining sector can be decarbonised quickly – and at an acceptable cost. But it requires policy intervention to lower green hydrogen production costs and increase the refineries’ offtake.”

“Marine and aviation hold much of the long-term potential for hydrogen derivatives, as these sectors are the most challenging to electrify. The challenge lies in competing fuels, the costs of production and the final shape of the policies providing support,” he added.

Policy gaps remain key barrier

Despite the progress, significant hurdles remain. Current EU policy requires RFNBOs to account for only 1% of transport sector energy use by 2030 – a modest target that reflects the challenges in expanding supply.

Member states have been slow to transpose RED III into national legislation, creating regulatory uncertainty that has slowed project development across most of the EU.

The report concludes that while European refiners could play a critical role in scaling up the green hydrogen industry, success depends on continued cost reductions and stronger policy support to fully kick-start demand across the continent.