ArcelorMittal relaunches Dunkirk with an electric furnace: an industrial and ecological bet against Chinese competition
Emmanuel Macron set foot on the ground at the Mardyck plant near Dunkirk on Tuesday, February 10, 2026, to celebrate a strategic turning point in the history of French steelmaking. After months of hesitation and tension, ArcelorMittal has finally officially announced the construction of an electric furnace at its iconic northern site, a colossal investment of €1.3 billion that marks a shift toward low-carbon steel production. This project, long threatened by economic uncertainty and unfair competition from Chinese imports, represents far more than a simple industrial renewal: it embodies the survival of a sector in crisis, where decarbonization has become a vital necessity in the face of the climate emergency and geopolitical pressures.
The announcement comes at a particularly tense time for the European steel industry, a sector heavily impacted by global overcapacity and declining demand. Over the past two decades, steel consumption in Europe has fallen by 20%, while overcapacities are expected to peak in 2027, with 721 million tons of excess production according to OECD projections. This situation has forced ArcelorMittal France to implement a job-saving plan (PSE) affecting nearly 630 positions, illustrating the scale of the economic challenges the group faces. Yet despite these difficulties, the decision to invest in an electric furnace in Dunkirk stands as both an industrial and environmental response, as the European Union tightens its CO₂ emissions reduction requirements.
The new electric furnace, scheduled to begin operations in 2029, will enable steel production with a carbon footprint three times lower than traditional blast furnaces, at just 0.6 tons of CO₂ per ton of steel. To achieve this, ArcelorMittal will combine several technologies: 60% recycled steel, pig iron from existing blast furnaces, and direct reduced iron (DRI or HBI), a material produced using hydrogen or natural gas powered by low-carbon electricity. This energy mix, coupled with a competitive electricity supply contract signed with EDF, aims to secure the site’s competitiveness amid volatile energy prices. The French government, for its part, has guaranteed financial support covering 50% of the investment, while Brussels is working on a safeguard clause to limit massive imports of Chinese steel, deemed partly responsible for the current crisis.
However, this project alone does not resolve all of Dunkirk’s challenges. The site, which employs 3,000 workers, remains vulnerable due to an imbalanced production capacity: its rolling mill can process up to 5 million tons of steel per year, while a single electric furnace will eventually produce only 2 million tons of decarbonized steel. Group executives have even mentioned the possibility of installing a second electric furnace by 2030, an investment estimated at €600 million, though this decision will depend on the evolution of demand for green steel. In the meantime, blast furnace No. 3 will be shut down in 2030, while No. 4, modernized in 2025 for €250 million, could remain operational until 2032. These strategic choices raise questions about the future of jobs: while electric furnaces require less labor than traditional processes, management has so far assured that no layoffs are planned in the short term. Yet unions remain cautious, warning that the transition to a decarbonized industry will inevitably lead to workforce reductions in the medium term.
The stakes extend far beyond France’s borders. The European Union, aware of the need to protect its strategic industries, is preparing the Industrial Accelerator Act (IAA), a text that will impose local content requirements for key sectors such as automotive, to stimulate demand for European and decarbonized steel. This regulatory framework, expected on February 25, 2026, could provide a decisive boost to projects like the one in Dunkirk. Meanwhile, the carbon border tax (CBAM), currently under revision, aims to align carbon pricing with international markets, with a projected €150 per ton by 2030—a level that would make traditional steelmaking processes far less profitable. In this context, green steel is no longer an option but a necessity for survival in a globalized market where China overwhelmingly dominates production, with far lower labor costs and less stringent environmental standards.
Technological and economic challenges must not overshadow the ecological urgency. The steel industry, responsible for roughly 7 to 9% of global CO₂ emissions, is one of the world’s most polluting sectors. Traditional processes, relying on coal and coke, release enormous amounts of greenhouse gases, while alternatives like electric furnaces or green hydrogen offer a glimmer of hope. Yet the transition remains complex: green hydrogen, though promising, is not yet produced at scale in a cost-competitive manner, and its deployment will depend on technological advances and public investment. Similarly, steel recycling, while less energy-intensive, will not suffice to meet all needs, particularly for high-quality products like automotive sheets.
In Dunkirk, the electric furnace thus fits into a logic of gradual transition, where every step counts. The stated goal is to produce 5 million tons of low-carbon steel by 2030, combining the capacities of French and Spanish electric furnaces. But for this bet to succeed, several conditions must be met: sustained demand for green steel, stable electricity prices, and effective protection against Chinese imports. Without these guarantees, the risk is high that the project could become a financial black hole, as has been the case with other similar initiatives in Europe. Yet the alternative—continuing to produce steel using obsolete methods—would be even more costly in the long run, both economically and environmentally.
This electric furnace project in Dunkirk thus symbolizes a dual battle: that of industrial competitiveness against international competition, and that of decarbonization in the face of the climate emergency. For ArcelorMittal, it is about proving that Europe can still innovate in strategic sectors despite external pressures. For France, it is an opportunity to reaffirm its role in the green transition while preserving essential industrial jobs. But the success of this endeavor will depend on the ability of public authorities, industry leaders, and citizens to commit together to this transition—otherwise, the blast furnaces of Dunkirk may well become the relics of a bygone era.