ArcelorMittal France

ArcelorMittal France is a steel producer operating multiple sites in France, including Dunkirk and Mardyck, as a subsidiary of the Luxembourg-headquartered ArcelorMittal group. Its activities focus on steelmaking, with ongoing projects to reduce emissions through an electric arc furnace at Dunkirk. This 2-million-tonne facility, with start-up planned for 2029, is expected to achieve approximately 0.6 tonne CO2 per tonne of steel. A new electrical steel production unit at Mardyck, a €500 million investment, began operations in 2026 to supply materials for electrification applications.