ArcelorMittal Europe – Flat Products

Online client newsletter | March 2025


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Decarbonisation and data driving demand for electrical steels

Siemens Energy partnering with ArcelorMittal for high-grade steel solutions for energy transition infrastructure

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There is a revolution taking place in the power generation market, and Siemens Energy’s turbine and generator business is at the heart of it, as customers respond to the challenges of decarbonisation. Power demand is being driven by economic growth in Asia and the global south, and the explosion in data and AI is ramping up energy needs around the world. Industry wants to be hydrogen-ready, wind turbine capacity is booming, and condensers are in big demand to balance network stability with the widespread transition to renewables.

Siemens Energy Erfurt plant.

Andreas Konschak, General Manager, Erfurt, Siemens Energy

Siemens Energy and ArcelorMittal are partnering to provide the high-grade electrical steels needed for key components such as the laminated stators at the core of all generators. “Security of supply and consistency of quality is crucial to us with our punching and lamination facilities working at full tilt,” says Andreas Konschak, General Manager, Erfurt, Siemens Energy. “We cannot afford interruptions in supply, and ArcelorMittal has the robust production capacity and technical expertise to deliver on our needs.”



For the energy generation market ArcelorMittal offers its ‘Industry’ range of steels. This includes a wide selection of fully processed and non-oriented electrical steels (NOES) – non-oriented steel has isotropic or multi-dimensional magnetic properties, which are critical for the efficiency of rotating motors and generators.

Siemens Energy generator cores being assembled at Erfurt, incorporating laminated stators.

“The steel characteristics we require are excellent magnetic permeability, strong thermal conductivity, processing punchability, very low energy losses, together with the availability of a wide range of coatings. ArcelorMittal are able to supply all the grades and coatings we need, and we know their R&D teams are constantly working on new solutions to make their electrical steels even more efficient,” continues Andreas Konschak.

ArcelorMittal recently announced the tripling of its electrical steels production capacity to 200,000 tonnes per annum at its Mardyck plant in France.

Cristina de Lucas, CMO Electrical Steel and Automotive Sales Director, ArcelorMittal Europe – Flat Products, added: “Non-oriented steels will be at the forefront of the ‘Green Deal’ and energy transition changes across industry, and we are collaborating with our customers to provide smart solutions wherever we can. Within a generator, the precise thickness of stators and their lamination characteristics have a significant impact on performance, and we understand the calibre of product that customers such as Siemens Energy require.”


Cristina de Lucas, CMO Electrical Steel and Automotive Sales Director, ArcelorMittal Europe – Flat Products


This photo was taken during the Top Management meeting in Erfurt in July 2024, where ArcelorMittal and Siemens Energy worked together to shape the strategic roadmap for a long-term partnership.

From left to right: Eric Werner, Master Project Plan Electrical Steels, ArcelorMittal Europe – Flat Products, Cristina de Lucas, CMO Electrical Steel and Automotive Sales Director, ArcelorMittal Europe – Flat Products, Andreas Konschak, General Manager, Erfurt, Siemens Energy, Benjamin Seelisch, Head - Raw Material, Strategic Procurement, Siemens Energy and Ali Polat, Key Account Manager Electrical Steels, ArcelorMittal Europe – Flat Products.

Commenting on Siemens Energy’s carbon reduction journey, Andreas Konschak, General Manager, Erfurt, Siemens Energy says: “It is gratifying that we know ArcelorMittal is equally committed to the decarbonisation journey and is building its portfolio of lower carbon steels. This is the direction of travel that our end-customers want.”

Andreas Konschak,
General Manager, Erfurt, Siemens Energy



The Siemens Energy business has been working in close partnership with ArcelorMittal since 2000, and the building up of expertise in electrical steels, together with the booming energy market and decarbonisation transition, are providing a strong platform for developing the relationship further. The coming onstream of ArcelorMittal’s additional electrical steels production of 200,000 tonnes per annum, at Mardyck in France, will deliver the capacity and surety of supply to support Siemens Energy in its ongoing growth and development opportunities out of Erfurt.



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