Hitachi Energy has successfully showcased HyFlex, an innovative energy supply system powered by hydrogen fuel cell technology, in collaboration with industry partners at the Port of Gothenburg. The two-week test demonstrated HyFlex's ability to provide clean electricity for ships at berth while connected to the shore power system. The system, which is portable and emission-free, offers flexibility and scalability, addressing challenges like constrained grids or remote power needs. By using green hydrogen as fuel, HyFlex can significantly reduce diesel fuel consumption, with a 1 MVA unit potentially saving 1,600 tons of diesel fuel annually. The collaboration with Stena Line, Power Cell Group, Linde Gas, and the Port of Gothenburg aims to accelerate sustainable solutions in port operations, aligning with new EU regulations mandating the use of onshore power supply or zero-emission technology for ships in ports by 2030. This initiative highlights HyFlex's potential as an energy carrier and the technical feasibility of fuel cell technology in port environments. The successful demonstration at the Port of Gothenburg builds on Hitachi Energy's efforts to drive sustainable energy solutions, showcasing HyFlex's versatility across various applications. The project not only emphasizes emissions reduction and energy efficiency but also underlines the importance of technological collaborations in advancing the energy transition towards a carbon-neutral future. The scalability and broad potential of HyFlex make it a promising driver for sustainable energy solutions in different sectors.