tkH2Steel's Revised Funding Deal: What Duisburg's Flexible Hydrogen Ramp Really Changes

thyssenkrupp Steel received the legally binding revision notice (Änderungsbescheid) for its tkH2Steel grant on 30 October 2026. The change is narrow on paper and consequential in practice: the project's 2.5 Mt/y direct reduction plant at Duisburg, plus two melters, will no longer be held to the hydrogen-use schedule written into the 2023 aid decision. Hydrogen will instead be stepped up "depending on availability, economic feasibility and customer demand," with full hydrogen operation still stated as the long-term goal.

The European Commission had earlier confirmed that the amended conditions remain compatible with EU state aid rules, clearing the way for the German federal and North Rhine-Westphalia authorities to reissue the award. Construction continues; the company says the concrete work on the reduction tower and melters is done. A new long-term hydrogen supply tender is "set to begin shortly."

The announcement is best read not as a new decarbonisation strategy but as an admission, formalised in state aid law, that the hydrogen supply chain the original project assumed has not arrived.

What was actually agreed, and what was not

Two points deserve emphasis. First, no headline aid figure has been confirmed as renegotiated. Coverage in 2026 described the Commission's move as a relaxation of conditions — largely a matter of pacing and triggers — rather than a new aid envelope. Readers should treat any claim of a changed euro total as unconfirmed until the Commission publishes the amended decision. Second, the company has not disclosed the specific milestone language that replaced the 2028/2029 dates, which means the real test of the revision — what counts as sufficient effort under the conditional payment mechanism — is still invisible from outside.

The economics that forced the change

The company's stated reasons are blunt: hydrogen market development has fallen short of 2023 expectations; generation capacity, transmission and import routes are "not yet available to the extent required"; and green hydrogen is significantly more expensive than assumed. These are not rhetorical caveats. The first tender, launched in February 2024 for up to 151,000 t/y, was suspended in March 2025 after bid indications came in well above expectations. At that point Platts assessed German alkaline electrolysis hydrogen backed by power purchase agreements at €9.35/kg, down from a spike above €14.50/kg in December 2024 but still far above the cost of natural gas on an energy-equivalent basis.

The arithmetic of that gap explains why the schedule could not hold. Roughly, a 2.5 Mt/y DRI plant running near full hydrogen operation needs of the order of 140,000–150,000 t/y of hydrogen. At €9/kg, that is over €1.3bn a year in fuel cost alone, before transport and storage. The conditional payment mechanism was designed to bridge part of the gap between fossil and renewable hydrogen costs, but a mechanism sized against 2023 price assumptions cannot credibly absorb a sustained multiple of them. Delay was the only route that kept the plant buildable.

Why the flexible design matters more than the delay

Much of the commentary treats this as a setback for European green steel. Technically, there is a more useful reading: the DRI-plus-melters configuration is doing exactly what it was specified to do. A shaft furnace that can run on natural gas, hydrogen or any blend allows the operator to decouple the capital decision from the fuel market. The alternative — waiting for cheap hydrogen before building — would have left Duisburg with nothing but blast furnaces and a shrinking window under the EU emissions trading system.

The gas-only fallback is not trivial. The company claims more than 50% CO2 reduction against the coal-based blast furnace route running on natural gas alone. That claim rests on the shift from coal to gas-based reduction plus electric melting, and it is highly sensitive to the emissions intensity of the grid supplying the melters and to the methane intensity of the gas supply chain. If the melters run on a coal-heavy German grid on a winter night, the real-world saving is smaller than the headline. Scope 2 accounting will matter as much as the reduction technology.

There is a second, less discussed implication. Running the plant on gas while retaining the option to switch means thyssenkrupp Steel is effectively holding a call option on hydrogen prices, paid for with public money. That is a defensible industrial policy choice — the alternative is stranded capital — but it transfers price risk to the taxpayer in a way the original conditional mechanism was supposed to avoid.

The tender is the real test

Everything now hinges on the procurement that has just been restarted. The original tender sought 10-year pipeline-delivered contracts. If the new round still targets that structure at volumes approaching 150,000 t/y, it will almost certainly fail again on price unless it is restructured. The plausible alternatives are shorter tenors, indexed pricing tied to a fossil benchmark, a larger share of blue or low-carbon hydrogen, or a mix of domestic electrolysis and imported ammonia cracked back to hydrogen. Each has consequences: blue hydrogen raises methane and certification questions; imports raise questions of certification, shipping cost and geopolitical exposure.

Watching briefs should focus on four disclosures: contract tenor, price indexation formula, the share of non-renewable low-carbon hydrogen, and whether the tender is split into tranches so that a first modest volume can be secured while the market matures. Absent those details, the "flexibility" is essentially a licence to keep burning gas.

Implications for the wider European transition

tkH2Steel is the largest single test of the EU's hydrogen-for-steel model, and its revision will be read closely by every other project sponsor in Germany, Sweden, the Netherlands and Spain. Three lessons are already visible.

• State aid can flex, but slowly. The gap between the first tender suspension (March 2025) and the definitive amended decision (October 2026) was about 19 months. Projects with less political weight than Duisburg may not get a second decision at all.
• The conditional payment model needs repricing. Mechanisms calibrated against 2023 hydrogen cost curves are effectively non-binding today. Expect the Commission to revisit how carbon contracts for difference are indexed — an issue with direct relevance to the EU Hydrogen Bank and the Innovation Fund.
• Downstream demand is the binding constraint that nobody is pricing. The revised terms explicitly tie the hydrogen ramp to customer demand. Green steel premia have not materialised at the volume and durability project finance assumed. Until automakers and appliance makers sign multi-year green-steel offtakes at a genuine premium, the ramp will lag the technology.

What to watch

The definitive notice is a de-risking event for the construction programme and a reminder that European decarbonisation timelines are now being rewritten in grant law rather than in strategy documents. The next observable milestones are the tender launch terms, any published ramp triggers in the amended award, and the plant's first DRI production — which, on current indications, will be gas-based. The company's stated intention to produce CO2-reduced premium steel in Duisburg remains credible; what has changed is that the industry now knows how much hydrogen price it can absorb, and the answer is: considerably less than the 2023 plan assumed.