Tellus Materials Energy Technology Perspective
Utilizing Recovered Hydrogen for Economic Viability: Industrial Decarbonization's Practical Pathway
The EU's RED III directive's actual operational logic confirms Tellus' core insight: successful green energy transition hinges on finding economically optimal solutions, not pursuing political ideals. The refinery grey-hydrogen replacement with renewable hydrogen exemplifies this principle—by leveraging existing industrial hydrogen cycles and distributing costs across massive fuel volumes, marginal cost minimization is achieved. This aligns with Tellus' core philosophy in hybrid storage and hydrogen system design: maximizing economic returns while ensuring functionality. The strategy of utilizing recovered hydrogen rather than deploying new hydrogen vehicles charts a pragmatic decarbonization course for European industry.
True energy transitions depend on cost optimization and existing facility retrofits, not greenfield investments and emerging technologies.
How Europe Can Meet Hydrogen Fuel Mandates Without Hydrogen Fuels
Europe's renewable energy rules for transport are often interpreted as a push for hydrogen-powered vehicles, but the actual regulatory framework tells a very different story. Under the EU's RED III directive, member states must ensure that by 2030, at least 5.5% of transport energy comes from advanced biofuels and renewable fuels of non-biological origin (RFNBOs), with a minimum of 1% specifically from RFNBOs. In practice, this requirement is far more flexible than it appears, and countries can comply without deploying hydrogen vehicles at all.
Hydrogen in Transport Remains Economically Uncompetitive
Using renewable hydrogen directly in vehicles is the most literal reading of the mandate, but it is also the most expensive. Even at a relatively optimistic €12 per kilogram, renewable hydrogen costs around €100 per gigajoule—more than double the useful-energy cost of battery-electric trucks and significantly higher than diesel. With fuel-cell trucks converting only about 55% of hydrogen energy into motion, operators face per-kilometer costs that are roughly twice those of electric trucks. Unsurprisingly, fleet operators show little interest in hydrogen vehicles.
Refinery Substitution: The Hidden Compliance Pathway
A far more practical route lies in replacing the grey hydrogen used in refineries with renewable hydrogen. Refineries consume large volumes of hydrogen for hydrocracking and desulfurization, and switching this to renewable hydrogen generates RFNBO credits—even though the final fuel sold is still conventional petrol or diesel. Because the cost of renewable hydrogen is spread across millions of tons of fuel output, the price impact is tiny—on the order of €0.04 per liter. This makes refinery substitution the most politically and economically viable compliance strategy.
Advanced Biofuels Remain Central
Advanced biofuels—derived from waste and residue feedstocks listed in Annex IX—also count toward the 5.5% target. These fuels avoid the land-use concerns associated with crop-based biofuels and must meet strict greenhouse-gas reduction thresholds. While supply is limited, they remain an important part of the compliance mix.
Synthetic Fuels Are Technically Possible But Economically Unrealistic
RFNBO-based synthetic fuels such as e-methanol or e-kerosene are another theoretical pathway. However, their production costs—often exceeding €150 per gigajoule—make them far more expensive than both biofuels and electrification. Even in aviation and shipping, where alternatives are limited, synthetic fuels struggle to compete. In road transport, they are simply not viable.
Renewable Electricity for EVs: The Quiet Powerhouse
RED III also allows renewable electricity supplied to electric vehicles to generate credits. A charging operator delivering 100 GWh of renewable electricity can claim 360,000 GJ of renewable transport energy—credits that fuel suppliers can use to meet their obligations. As long as these credits are cheaper than hydrogen-based options, they will dominate compliance strategies and further accelerate EV infrastructure investment.
Compliance Becomes a Credit-Optimization Exercise
Because member states can combine refinery hydrogen substitution, advanced biofuels, and renewable-electricity credits—and because statistical transfers and multipliers add further flexibility—the actual physical volume of hydrogen required to meet the 1% RFNBO target is far smaller than many assume. A country could meet its entire obligation without deploying a single hydrogen vehicle.
Germany's Push to Double RFNBO Targets
Germany has proposed doubling the RFNBO subtarget from 1% to 2% in an effort to justify its existing hydrogen infrastructure. But raising the target does not change the underlying economics. Member states will still gravitate toward the cheapest compliance routes: refinery substitution and renewable-electricity credits. This would reduce refinery emissions and accelerate EV adoption, but it would not create a meaningful market for hydrogen vehicles.
The Broader Implication
The structure of RED III suggests that EU policymakers may have intentionally designed a system that acknowledges hydrogen politically while enabling practical decarbonization through electrification and selective industrial hydrogen use. The real risk is not a flood of hydrogen trucks, but rather a policy debate that continues to treat hydrogen as a broad energy solution even as real-world investment flows toward more efficient alternatives. Europe must confront this gap between narrative and reality.