The Flexible Clean Propulsion Technologies (Flex-CPT) project consortium, led by the University of Vaasa, aims to develop innovative, clean, and flexible solutions for maritime transport and off-road machinery. The goal is to reduce dependency on single fuel types, develop flexible hardware design, smart combustion control, efficient thermal management, and adaptive emission and hybrid energy management. These solutions will make it possible to use zero- and low-carbon fuels in the best way, reducing greenhouse gas emissions by up to 100%.