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Updated on October 27, 2015

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Bureau of Environment

Tokyo joins the Compact of Mayors, a global initiative addressing climate change

The Tokyo Metropolitan Government (TMG) has declared its commitment to the Compact of Mayors, the world’s largest coalition of cities addressing climate change.

The Compact of Mayors was launched in September 2014, under the leadership of C401, ICLEI2 and other related organizations, with the aim of securing the successful outcome of COP21 (UN Framework Convention on Climate Change 21st Conference of the Parties), which will take place in Paris next month.

Cities in the Compact pledge to make public such information as the targets they have set for reduction of greenhouse gas emissions, and their strategic action plans, and to make annual progress reports.

Through the Compact of Mayors, TMG will continue actively to pursue solutions to the global issue of climate change, by sharing with other large cities around the world the experience and know-how gained through its pioneering initiatives such as the “Tokyo Cap-and-Trade Program.”

Aim of the Compact of Mayors

To combat climate change through collaboration among the world’s cities, which together are responsible for 70% of global greenhouse gas emissions.

Key Commitments of Cities in the Compact

  • Measure greenhouse gas emissions
  • Identify risks associated with climate change
  • Establish targets for the reduction of greenhouse gas emissions
  • Formulate an action plan


Compact of Mayors website (English): External link )

  • 1 Established in 2005, C40 (C40 Cities Climate Leadership Group) is a network of world cities committed to addressing climate change. Currently there are 75 member cities. Tokyo joined in 2006.
  • 2 ICLEI (Local Governments for Sustainability) is an international network of cities, towns and metropolises dedicated to sustainable development which currently has over 1000 member organizations. Tokyo joined in 2010.

Contact Information

For details, contact:
Policy Planning Section, General Affairs Division, Bureau of Environment