ArcelorMittal maintained its 2050 net-zero emissions target in its 2025 sustainability report, despite growing challenges around competitiveness, energy costs and political uncertainty.
The company reported a 47.7 percent reduction in absolute emissions from 2018, with its carbon intensity reaching 1.79 tonnes CO₂ per tonne of crude steel in 2025.
A central element of the company's strategy is the transition to production based on electric arc furnaces (EAFs). EAF production accounted for 26 percent of total production in 2025, up from 19 percent in 2018, with plans to add 5.4 million tons of additional EAF capacity by 2030.
Dunkirk project highlights transformation
One of the flagship investments is the transformation of the Dunkirk site in France, where a 2 million tonne EAF will replace some of the existing blast furnace capacity.
The project, supported by low-carbon electricity and government funding, is expected to significantly reduce emissions and serve as a model for future decarbonization projects.
Four Pillars of Decarbonization Strategy
The company's decarbonization journey is structured around four key levers that together define its transition strategy. These include expanding steel production using electric arc furnaces to reduce dependence on carbon-intensive blast furnaces, as well as providing access to clean and renewable electricity for energy production processes. In parallel, the company is increasing its use of high-quality iron ore and metals to improve efficiency and reduce emissions intensity. Finally, the company continues to invest in breakthrough technologies such as hydrogen-based steelmaking and carbon capture, storage and utilization (CCS/CCU), although the report notes that large-scale implementation of these solutions currently remains economically challenging.
ArcelorMittal expects to reduce emissions intensity to 10 percent by 2030 compared to 2018 levels (Scopes 1 and 2), based on on projects that have already reached their final investment level. solution.
Capital investment discipline and energy expansion
Investments in decarbonization will be
