Discussion Panel: How Do We Define Green Steel?

Tuesday 18th June 11:30 - 12:15


Chaired by Rutger Gyllenram of Kobolde & Partners

Session Chair

Rutger Gyllenram

CEO and Founder

Kobolde & Partners

Rutger Gyllenram is a Swedish metallurgist and entrepreneur. He has an MSc in process metallurgy and materials science and a licentiate degree (Dr-ing) in metal production technology from the Royal Institute of Technology, KTH, in Stockholm.

He is the founder and CEO of Kobolde & Partners AB, working with raw material and process assessment, which is crucial for decarbonization in the steel industry.


Thomas Hörnfeldt

Vice President, Sustainable Business


Thomas Hörnfeldt is vice president of sustainable business at SSAB.

He has an MBA from Uppsala University and an MSc from KTH in Stockholm, as well as vast experience in general management and sales, market intelligence, and sustainability.

Thomas has been managing director of Ruukki Sverige, senior vice president of special steels and international sales at Ruukki Metals Ltd, vice president at Atlas Copco Dynapac, and vice president of corporate marketing and sales at steel provider Ovako.

His career started at ABB, which he left as vice president in 2004, after almost 13 years of management positions in the metals industry activities.

Fernand Didelon

Consultant in Steel Decarbonization

Phoenix Technologies

Fernand Didelon graduated from the Ecole des Mines de Nancy where he obtained a MSc in materials and chemical engineering. He started his career in 1991 as a blast furnace process engineer in ArcelorMittal Dunkerque and moved to ArcelorMittal’s Florange plant as head of BF process, then head of BF and utilities production, and later head of sinter plant. During his time at the Florange, he took part in the Ulcos (ultra- low carbon steelmaking) project for implementing a demonstrator top gas recycling furnace at industrial scale.

From 2011 to 2021, he occupied various positions, including head of blast furnace, head of steelshop and chief operation officer. In 2021 he joined the green steel team of SMS-Paul Wurth in Luxemburg where he initiated the development of the EASyMelt concept and other decarbonization projects.

From March 2024 onward, within Phoenix Technologies SA, a consulting company, he supports steel plants in improving their operational performances, aiding them in selecting the most efficient decarbonization options for sustainable steelmaking.

Caroline Ashley



Caroline Ashley is the executive director of SteelWatch, leading a small and growing international team driven by huge ambition: to decarbonize and transform the steel industry for a fair and thriving zero-emissions world.

She is an experienced leader, systems-thinker, and change-maker. A socio-economist by background, her career has spanned work in non-profits, policy research, policy making, business innovation, impact investment, consultancy, and community development, in Africa, Asia, Europe and Americas. Her early career in international development focused on equity and sustainability within market systems. Prior to founding SteelWatch, Caroline was economic justice strategic lead at Oxfam GB, challenging powerful players around the world to stretch for greater socio-economic transformation and climate resilience, and global programmes director at Forum for the Future, driving shifts from incremental change to system transformation in energy, food and the role of business in society.

Nicklas Magnusson

Decarbonization manager

Ovako group

Nicklas Magnusson is decarbonization manager at Ovako, a leading European manufacturer of engineering steel. Nicklas was in the construction industry for nearly ten years, holding various positions within the field of sustainable business development, before joining Ovako in 2023. He holds an engineering degree in design and product realisation and a MSc in sustainable technology.


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