Wärtsilä is actively involved in a new research project that explores cutting-edge technology for cleaner and more energy-efficient engines by implementing a closed loop combustion cycle. The project, led by the University of Vaasa, involves the Integrated Hydrogen-Argon Power Cycle (iHAPC) consortium, focusing on utilizing argon, oxygen, and hydrogen to enhance engine efficiency. By replacing air with argon and oxygen in the combustion process, the Argon Power Cycle aims to achieve higher thermodynamic efficiency and sustainability. The project not only aims to improve engine efficiency but also emphasizes the use of green hydrogen and sustainable fuels for power generation, contributing to a renewable energy future. The research project, part of the WISE programme, is funded by Business Finland and involves partnerships with various organizations to drive innovation in energy systems. Professor Maciej Mikulski from the University of Vaasa highlights the potential breakthrough of the argon power cycle in the energy sector, emphasizing the importance of full valorisation of green hydrogen. The project aims to leverage expertise in fuel analytics, modelling, powertrain testing, and control development to advance sustainable energy solutions. Overall, the innovative approach of the Argon Power Cycle, combined with the utilization of hydrogen and argon, showcases a significant step towards enhancing energy efficiency and sustainability in power generation systems.