Can you shortly introduce yourself and your role in the HyInHeat project?

I am Marc Los, a project engineer at 7 Steel Nordic Manufacturing. I hold a degree in mechanical engineering and joined the company in early 2025. With over 11 years of experience in the naval industry, I have worked on projects focused on alternative fuels for shipping to help reduce carbon emissions. At 7 Steel, I am responsible for gas systems, including regulatory and safety aspects. This expertise plays a key role in the HyInHeat demonstrator and contributes to the project’s success.

How did 7 Steel get involved in the HyInHeat project?

Driven by a strong commitment to decarbonization and aligned with the European Green Deal, 7 Steel Nordic began a determined search several years ago to identify and implement innovative technologies that could reduce its carbon footprint. When the opportunity to join the HyInHeat project emerged, it was immediately recognized as a strategic fit. The decision to participate was unanimous, and the partnership was formed swiftly and seamlessly.

How do you see the added value of HyInHeat for 7 Steel?

HyInHeat offers an innovative opportunity to reduce Scope 1 emissions in the Melt Shop through the integration of hydrogen-based heating technologies. Combined with 7 Steel Nordic Manufacturing’s already low Scope 2 emissions, thanks to green electricity, the project is expected to be a valuable addition to the company’s transition to green steel. By replacing fossil fuels with hydrogen, HyInHeat directly supports the steel sector’s move toward climate neutrality.

What is the role of 7 Steel in the HyInHeat project?

7 Steel Nordic leads Work Package 6, which focuses on the demonstration of hydrogen heating solutions in steel production processes. The company also serves as an industrial use case, demonstrating ladle preheating using H₂/O₂ combustion. This demonstration will be carried out in close collaboration with other HyInHeat partners. The Barcelona Supercomputing Center (BSC) will perform Computational Fluid Dynamic simulations (CFD simulations), to study and understand the hydrogen combustion process and the behavior of the flame. Furthermore, RHI and RWTH-GHI will carry out chemical and mineralogical tests on the refractory, to study the impact of the use of hydrogen on the refractory material.   

What do you hope to achieve by the end of the project?

By the end of HyInHeat, 7 Steel Nordic Manufacturing aims to have a fully operational demonstrator for hydrogen-powered ladle heating. The project will also deliver critical knowledge and technical expertise about hydrogen heating solutions in the steel industry.