Executive Director, FinNuclear Association

Professor, Lappeenranta-Lahti University of Technology LUT Dr. Juhani Hyvärinen works as Professor of Modelling in Nuclear Engineering and Head of Energy Technology Department at LUT University, Lappeenranta. Born in 1963, he has a M.Sc. in Power Plant Engineering and D.Sc.(Tech.) In Nuclear Engineering, both from Lappeenranta University of Technology. He has been with LUT since 2013. He is internationally known for his early works on boron dilution in PWRs, horizontal steam generator modelling, and ECCS sump/strainer clogging issue resolution, and more recently on his work with passive safety systems and emerging problem resolution. He is also actively working on Small Modular Reactor (SMR), Maritime Reactor and Micro-Modular Reactor (MMR) safety and licensing, and overall safety (safety-security-safeguards triplet). From 2007 to 2013 Dr. Hyvärinen worked as the Chief Nuclear Officer in Fennovoima, a start-up nuclear new build company in Finland. He was responsible for power plant technology, fuel and waste management.…

Chief Sustainability Officer (CSO), Norsk Kjernekraft AS, Norway Mr. Øyvind Aas-Hansen is Chief Sustainability Officer (CSO) of the Norwegian privately owned company Norsk Kjernekraft AS (“Norwegian Nuclear Power Inc.”), which aims to establish, own and operate nuclear power plants in Norway. Prior to working with Norsk Kjernekraft, Aas-Hansen worked nine years as a senior adviser with the Norwegian Radiation and Nuclear Safety Authority (DSA), including representing Norway and DSA in international fora and events such as the Arctic Council EPPR Working Group, and was leading the Arctic Council EPPR Expert Group on radiation from 2019 until starting in Norsk Kjernekraft in August 2023. Aas-Hansen holds a PhD in Arctic Biology, after which he worked 10 years as a research scientist.

Managing Director Nordics, Calogena Oy  Tor Stendahl joined Calogena as MD Nordics for Calogena Oy in February 2025. He has a background from the chemical industry as well as from the batteries. He previously served as Managing Director of the battery manufacturer Freyr Battery Finland and before that he worked over 25 years at German chemicals producer BASF. He has had a leading role in two battery industry related projects in Finland; at BASF he was involved in the Harjavalta precursor cathode active material (pCAM) investment project and at Freyr Battery drove the investment projects (cell manufacturing and cathode active material, CAM) in Vaasa and thereby brings with him extensive management experience and expertise in green transition investments. Calogena, a subsidiary of the French industrial group Gorgé, was founded in 2021 with a unique mission: to decarbonize district heating. We are developing a low temperature and pressure Small Modular Nuclear Reactor (SMR), specifically…

Vice President, Nuclear Energy, VTT Technical Research Centre of Finland (VTT) Dr. Halinen holds the position of Vice President at VTT since January 2024. He has 30 years of experience in the nuclear and energy industries and academic research. Dr. Halinen leads the Nuclear Energy research area at VTT. Before joining VTT, he was responsible for strategic business development at Valmet, a global technology supplier for the pulp, paper, and energy industries. He held various managerial and expert positions at Fortum 2005-2022, covering nuclear fuel engineering, project management, R&D, strategy and business development, and nuclear safety oversight. He has served as a board member of several nuclear companies and held governing board positions in international research initiatives. Dr. Halinen holds a doctoral degree in theoretical physics. His academic career has span work from materials physics to energy economics and market design. He has also contributed to several publications on alternative…

Director, Radiation and Nuclear Safety Authority of Finland (STUK)  

Chief Policy Adviser, Confederation of Finnish Industries EK Kati Ruohomäki has been Chief Policy Adviser for Energy and Climate at the Confederation of Finnish Industries EK since 2009. Ruohomäki works mostly with EU affairs (policies, strategies, legislation etc), but also at the national level. There is a growing interest in nuclear power in Europe, and the nuclear power legislation is also being reformed in Finland. Prior to joining EK, she worked 15 years in the forest industry in various companies and roles. Ms Ruohomäki graduated with a master's degree and a licentiate degree in chemical engineering from Lappeenranta University. She has also completed an executive MBA degree in strategic management in University in Oulu.

Vice President, Nuclear Services, Fortum Master of Science, Tech. (Power Engineering and Reactor Technology) Anni Jaarinen is leading the nuclear service business at Fortum since May 2021.   Fortum offers services to nuclear utility and plant customers globally in areas such as newbuild licensing, plant safety analysis and nuclear waste management. The service offering is developed based on Fortum´s significant in-house nuclear competence and decades of experience as a nuclear operator.  Before the current position Anni Jaarinen was developing and starting nuclear decommissioning and waste business as a part of Fortum´s nuclear service portfolio. Her technical background is in nuclear process engineering and she has more than 17 years of experience on nuclear industry.