Around 60% of Japan’s CO2 emissions comes from power plants, iron works, and chemical producers, many of which are in port and waterfront areas. Therefore, in order achieve Japan’s goal of being net zero by 2050, it would be both effective and efficient to concentrate efforts towards decarbonizing ports. For this reason, the Ministry of Land, Infrastructure, Transport and Tourism is working on preparing environments for the introduction of hydrogen/ammonia fuel as well as creating carbon neutral ports (CNP) to decarbonize port areas. Our goal is that these efforts will help the whole country to achieve carbon neutrality.