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The City of Yokohama is a beautiful international port city in Japan’s metropolitan area. In addition to its modern waterfront district, symbolized by the Minato Mirai 21 area, the city features a wide variety of landscapes, including lush green residential neighborhoods and agricultural land in its suburbs, offering a rich and diverse range of attractions.
The turning point in the development of the City of Yokohama was the opening of its port in 1859. Since then, Yokohama has overcome a series of challenges, including the Great Kanto Earthquake, rapid population growth, and environmental pollution, and has grown into Japan’s second-largest city with a population of approximately 3.7 million.
The urban management expertise and technical know-how accumulated through this history now serve as a foundation for the city’s international contributions. In recent years, Yokohama has hosted numerous international conferences, including the Annual Meeting of the Asian Development Bank and the Tokyo International Conference on African Development (TICAD). In addition, the city welcomed approximately 37 million visitors in 2024, demonstrating its strong capacity in tourism and MICE (Meetings, Incentives, Conferences, and Exhibitions).
Yokohama has been a pioneer among Japanese cities in implementing climate change measures such as energy conservation, demand-side electricity reduction, and the expansion of renewable energy.
In January 2023, the city revised its “Yokohama City Action Plan for Climate Change Mitigation,” setting a target of a 50% reduction in greenhouse gas emissions by FY2030 (compared to FY2013 levels), and is steadily advancing efforts toward achieving net-zero greenhouse gas emissions by 2050.
To achieve these goals, Yokohama is promoting an “All-Yokohama” approach to climate action, including introducing new technologies in collaboration with the private sector, smart use of renewable energy in cooperation with other local governments, and citizen-driven initiatives. In addition, the Minato Mirai 21 district has been selected as a national “Decarbonization Leading Areas.”
Going forward, together with local stakeholders, the city aims to achieve net-zero carbon emissions from electricity consumption by 2030 and continue building a decarbonization model for large cities.
Associate Partnership is available to non-governmental organizations, universities, state and national government agencies and not-for-profit research institutions. The purpose of Associate Partnership is to facilitate dialogues between local governments and these partners, to provide knowledge transfer in line with ICLEI’s Mission and Charter, and an avenue for which partners can support ICLEI’s work and mandate.

HARNESS the power of the ICLEI Network!" Governments need to give (the sense of) direction, as Business leaders we don't make the wind, we sail the boats. So policy should set the winds in the right directions if you want the boat going fast to the right harbor."Philippe Joubert Senior Advisor, World Business Council
on Sustainable Development
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Rates and Dues
Application Form
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Joining ICLEI means connecting to more than 2,500 local and regional governments as well as technical experts and a diversity community of partners worldwide. ICLEI Members actively engage with their peers through conferences, workshops, webinars and online platforms and take advantage of our connections with businesses, financial institutions and other implementation partners that help strengthen innovation and resourcing.
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Fee Structure
Benefits
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