Dr. habil. Eng. Mateusz Brzęczek is an academic researcher at the Silesian University of Technology with over 10 years of experience in scientific research and research and development in the field of energy engineering. His research focuses on modern energy systems, with particular emphasis on hydrogen technologies and the production of synthetic fuels via both conventional chemical synthesis and advanced electrochemical pathways, including Power-to-Fuel concepts. He specializes in the modelling and analysis of complex energy systems, integrating renewable energy sources with industrial processes. His expertise also includes gas turbines and combined cycle systems, particularly in the context of energy transition and system flexibility, as well as carbon capture technologies and low-emission energy solutions. His scientific output includes 78 publications, including articles published in leading journals such as Applied Energy, Energy, and Renewable Energy, with a cumulative Impact Factor of 85.14. He has extensive experience in national and European research projects (NCN, NCBR, and EU programs), contributing to process modelling, techno-economic assessments, and the development of innovative energy technologies.