The quest for new energy sources to replace fossil fuels is accelerating. Although many ports have already created the first systems for LNG (Liquefied Natural Gas) for ships, many argue that hydrogen could be the ultimate solutions for the energy transition. The most recent project joining this chase has been announced in the port of Oostende (Belgium). A consortium formed by the port authority, DEME Concessions and PMV plans to build a new plant to produce green hydrogen using renewable energy. The plant would save between 500k and 1 million tons of CO2 per year. The project also includes an offshore wind farm including 399 turbines with a total capacity of 2,26 GW. Other port cities in Europe are also developing different initiatives in the same direction. The port of Antwerp, also in Belgium, already ordered tug boats and passengers ferry using hydrogen technology. Hamburg (Germany), announced last year its plans to build the world’s largest hydrogen electrolysis plant in port, with a capacity of 100 megawatts. The port of Valencia (Spain), is also active in this field, with the project H2PORT, including port equipment powered by hydrogen. However, we cannot forget there is no silver bullet for the energy transition. This ambitious goal will require diversifying our energy sources and optimizing our consumption.