In a groundbreaking initiative at the Port of Leith in Edinburgh, the world's first Green Hydrogen Shore Power Demonstrator was unveiled. This project, a collaboration between Innovate UK, the UK Department for Transport, Forth Ports, Targe Towing, Logan Energy, PlusZero, and Waterwhelm, aims to reduce carbon emissions from vessels by utilizing clean, green hydrogen energy. The Green Hydrogen Shore Power Demonstrator integrates innovative water treatment, waste heat utilization, and hydrogen production to provide clean shore power for maritime operations, marking a crucial step in the decarbonization of ports. The project, funded by the UK Department for Transport, is part of the Clean Maritime Demonstration Competition Round 4 (CMDC4), emphasizing the importance of technology development to decarbonize the UK domestic maritime sector. The event highlighted the potential of green hydrogen, with live demonstrations showcasing the hydrogen-powered system and clean energy innovation sessions. Specialist partners provided expertise in water treatment technology, hydrogen production, and clean power solutions, emphasizing the collaborative effort towards sustainability and emission reduction in the maritime industry. High-profile attendees, including the Cabinet Secretary for Transport, praised the project's innovative use of green hydrogen and its potential to decarbonize ports and shipping, setting a precedent for similar initiatives across the UK. The project leaders expressed their commitment to driving the hydrogen economy forward and contributing to global net zero goals through innovative technologies and sustainable practices.