ArcelorMittal in Luxembourg has published the 2025 edition of its Sustainability Report online, presenting its actions and progress over the past year in the field of sustainability.
As with previous editions, the 2025 Report was prepared with reference to the Global Reporting Initiative (GRI) Standards, GRI 1: Foundation 2021; the transposition of the European CSRD1 and CS3D2 directives into Luxembourg law having been deferred following the Omnibus “Stop-the-Clock” Directive
of April 2025. This approach helps maintain continuity in presenting the organisation’s strategy, commitments and results in the Grand Duchy to its stakeholders.
The year 2025 marked the third and final stage of the stakeholder engagement programme launched by ArcelorMittal in Luxembourg in 2023. A consultation was organised with a small group of external stakeholders through an online panel. The aim was to gather their expectations, comments and reflections on the sustainability strategy and report, as well as on the organisation’s objectives in Luxembourg. The stakeholders consulted included representatives of Luxembourg municipalities where ArcelorMittal operates, as well as representatives from industry and the non-profit sector, academics and suppliers. One of the key findings of this consultation was that the top two priorities for ArcelorMittal in Luxembourg are employee health and safety and local partnerships.
Identified by stakeholders as the foremost priority, the health and safety of our employees remains paramount for our organisation, both globally and in Luxembourg. In 2025, the Group’s Luxembourg activities rolled out action plans structured around Safety culture, with the three-year One Culture Roadmap plan, and risk management, the two essential pillars identified during the audit conducted worldwide in 2024 by dss+ consulting company.
In health and safety, positive results were recorded in the Grand Duchy, with several notable records: 2,322 working days without a lost-time accident at the Belval Medium Section Mill, 1,401 days at Bissen, 2,900 days for the European Logistics Centre, 1,626 days at Dommeldange and 1,647 days for Sotel, the entity that supplies electricity to steel production facilities. The lost-time injury frequency rate in 2025 remained at 0.23, as in 2024.
As in previous years, 2025 was marked by geopolitical instability and international trade tensions that affected macroeconomic indicators, while investment capacity was absorbed by the energy transition on the one hand and by digitalisation, boosted by the explosion of AI, on the other. While global steel
production remained broadly stable at 1.8 billion tonnes, production overcapacity continues to increase outside Europe, resulting in significant inflows of low-cost steel onto the old continent.
In Luxembourg, the Group’s activities are partly shielded from these tensions thanks to the range of niche products developed over recent decades, which continue to hold clear appeal for our customers, even though side effects are being observed, notably linked to strong non-European competition and unfavourable conditions for international trade.
ArcelorMittal in Luxembourg’s commitment to the sustainability of its activities continued, in line with the Group’s mission to produce “smarter steels for people and planet”, with significant progress on the major project to modernise the Belval electric steelmaking plant, including the completion of construction of a new electric arc furnace. This new equipment carried out its first operating tests at the end of 2025 and has since been gradually ramping up. Thanks to this major investment, the Luxembourg facilities will be self-sufficient in decarbonised semi-finished products, rolled in the Grand Duchy, positioning the country at the forefront of players in the sector committed to tackling global warming.
These efforts to decarbonise our steels were also recognised and honoured in December 2025 with the FEDIL Environment Award in the “Product” category, for the range of decarbonised steel developed by ArcelorMittal under its XCarb® recycled and renewably produced label.
Another essential project in 2025 that also made significant progress is located in Differdange, with the completion of the dedusting installation, which will reduce diffuse emissions generated by site activities by 80%. This is a purely environmental project, as the installation is not intended to produce more steel or improve margins. Here, the priority is given to relations with the communities in which we operate and with which regular and constructive dialogue is held several times a year.
Beyond industrial activities, ArcelorMittal Foundation Luxembourg, our Luxembourg foundation, continued its support for local non-profit and charitable organisations. Its work is structured around four main pillars: education, social action, culture and heritage, and the environment. In 2025, the Foundation supported various projects in these four areas, as well as a range of initiatives led by associations in which ArcelorMittal employees in Luxembourg volunteer.
In 2025, our Foundation also launched an original cultural initiative with the creation in Luxembourg of the first Street Art Prize, awarded in December. The principle is to support artists from the Greater Region who practise this art form by offering them a space in which to express themselves — in this case, walls owned by ArcelorMittal located on the route d’Audun in Esch-sur-Alzette. This first edition saw twelve artists, both established and emerging, give free rein to their creativity and offer the city’s residents a colourful mural.
Valérie Massin, Vice-President ArcelorMittal Luxembourg, commented: “The production and publication of the Sustainability Report is a key step in our continuous improvement approach and in monitoring our sustainability action plan. It highlights, for both our internal and external stakeholders, our progress and the areas where we can improve; it is also a clear and structured communication tool around which the regular dialogue we conduct with our stakeholders can take place. It is also an important source of information to help people get to know us better.”
The Report is available on the following page of our website.
