New analysis by UC Berkeley highlights Japan’s port decarbonization leadership in Port News 20/03/2026 A new study, “An Analysis of Japan’s Carbon Neutral Port Initiative and Yokohama Port and Harbor Decarbonization Plan,” (download the Japanese version here) from the University of California, Berkeley examines Japan’s innovative approach to decarbonizing maritime ports. Japan’s Carbon Neutral Port (CNP) certification framework and the City of Yokohama’s port decarbonization initiatives represent serious and forward-looking efforts to address the complex challenge of maritime emissions reduction. The study comes as momentum builds for decarbonization of the international shipping industry, despite recent delays at the International Maritime Organization (IMO). In a period of regulatory uncertainty and rapid technological change, the report underscores the importance of ensuring that certification systems and infrastructure plans continue to evolve in step with emerging fuel pathways, electrification needs and international policy developments. The U.C. Berkeley analysis, commissioned by Pacific Environment and authored by David Wooley, director of the Environment Center at University of California’s Berkeley’s Goldman School of Public Policy, examines Japan’s Carbon Neutral Port (CNP) certification initiative and the Port of Yokohama’s comprehensive decarbonization plan. The CNP certification, established by Japan’s Ministry of Land, Infrastructure, Transport and Tourism in 2025, sets benchmarks for Japanese maritime terminals to reduce greenhouse gas emissions and improve air quality in port communities. The City of Yokohama’s Port and Harbor Decarbonization Plan, which won the 2025 IAPH Sustainability Award for Climate and Energy, includes 121 projects ranging from harbor craft electrification to next-generation low- and zero-carbon marine fuels. Notably, Yokohama is pioneering the use of “battery-tanker” ships that would transport power from floating offshore wind turbines to shore using vessels filled with batteries. “Japan’s CNP Certification is a very thoughtfully constructed program that will encourage and enable Japanese maritime terminals to reduce greenhouse gas emissions from port operations,” said David Wooley, Director of the Environment Center at University of California’s Berkeley’s Goldman School of Public Policy. “In many ways Japan is ahead of other nations on decarbonization of maritime terminals and related industrial operations. The Port of Yokohama serves as a model for other port decarbonization efforts in Japan and will positively influence port decarbonization efforts internationally.” Across Asia, ports are also advancing their own decarbonization strategies alongside Japan’s Carbon Neutral Port initiative. China has expanded shore power deployment at major ports under Ministry of Transport green port policies, Republic of Korea is scaling up Alternative Maritime Power (AMP) infrastructure under the Ministry of Oceans and Fisheries’ maritime decarbonization strategy, and Singapore’s Maritime and Port Authority (MPA) is implementing the Maritime Singapore Decarbonisation Blueprint 2050, including electrification of harbor craft and development of supply chains for low- and zero-carbon marine fuels. These regional initiatives highlight the growing role of Asian ports in accelerating maritime decarbonization through electrification, alternative fuels and port infrastructure development. “While the IMO delays actio