Shipowners pursuing long-term fuel strategies are watching closely as Wärtsilä joins a European research programme focused on hydrogen-powered shipping. The H4PERION project will test engine technologies, methane slip reduction systems and digital modelling onboard Wasaline’s ferry Aurora Botnia as operators search for practical pathways toward lower-emission vessel operations.
Pressure is mounting across the maritime sector to identify fuel and propulsion systems capable of supporting future emissions targets without disrupting vessel operations. For shipowners managing long-distance fleets, the challenge extends beyond fuel availability to engine performance, onboard safety and lifecycle efficiency.
Against that backdrop, Wärtsilä has joined H4PERION, a Horizon Europe project led by the University of Vaasa in Finland. The four-year initiative brings together 16 organisations from seven European countries to develop technologies intended to reduce greenhouse gas emissions from shipping.
Within the project, Wärtsilä will develop a combustion concept allowing internal combustion engines to operate on blends of hydrogen and biomethane, with the long-term target of achieving up to 100% hydrogen operation in open-sea conditions. The company will also work on catalyst systems designed to reduce methane slip and other emissions linked to alternative fuel use.
Sea trials will take place onboard Wasaline’s ferry Aurora Botnia, which operates between Finland and Sweden. Alongside onboard testing, an identical full-scale engine will run in laboratory conditions to mirror vessel operations and refine system performance. Data gathered from both environments will feed into a digital twin model intended to support future vessel and engine design work.
“Several low-carbon fuels are being explored within the industry, and hydrogen is considered one potential zero-carbon option,” said Henri Karimäki, Research and Development Director at the University of Vaasa. “By focusing on its practical application and safety in maritime contexts, the H4PERION project aims to advance innovation and set new standards for the industry.”
Anders Öster, General Manager, Research Coordination & Funding, Wärtsilä Marine, said: “Achieving net zero emissions in shipping is a journey we must take together. It is only through close cross-industry collaboration and shared determination that we will further accelerate progress towards zero-carbon solutions for maritime.”
