Cities Urged to Step Up Climate Action and Ambition Ahead of Global Climate Action Summit 

In the lead up to the Global Climate Action Summit, taking place in San Francisco from September 12-14, mayors globally are being invited to step up their climate action. 

Cities around the world are already taking ambitious action to make the Paris Agreement a reality. By 2030, we know that nearly every home built, every power plant brought online will need to be powered by clean energy. The Global Climate Action Summit is a chance to demonstrate to the world that cities, along with businesses, investors, state and regional governments are at the forefront of working towards a climate safe, healthy, prosperous world for all.

City actions are being collected under the One Planet Charter, which is designed to provide cities with a swift, yet achievable road map for bold and inclusive climate action.

Contact to register your interest in joining any of the actions detailed below.

 Making a Plan to Meet Paris Agreement Goals

To join Deadline 2020, mayors are asked to sign a letter of commitment. To learn more, contact or visit the resource centre.

Developing an inclusive climate action plan by the end of 2020 that aligns with the highest goal of the Paris Agreement: to limit warming to 1.5 degrees Celsius and adapt to the impacts of climate change. 

City action towards sustainable communities

To participate in any of the initiatives described below, cities are asked to detail the actions they will take to meet the goals of that initiative. For more information, contact 

Joining the Green & Healthy Streets ("Fossil Fuel Free Streets") Declaration, where cities pledge to procure only zero-emission buses from 2025, make a major area of their city zero emission by 2030, and encourage a shift to walking, cycling, and public transport. Cities taking action to create fossil-fuel free streets are paving the way for a future in which the majority of citizens move around their cities by walking, cycling, and shared transport, resulting in less congestion, less pollution, quieter roads, and cleaner air. Please see C40’s Green & Healthy Streets webpage for more information.


Joining the "Net Zero Carbon Buildings" Declaration, by enacting regulations and/or planning policies to ensure new buildings operate at net zero carbon by 2030, with all buildings to follow by 2050. Cities can additionally commit to exclusively owning, occupying and developing assets that are net zero carbon in operation by 2030. All signatories are also encouraged to report on emissions beyond carbon (e.g., refrigerants). Building energy use accounts for over half of total city emissions on average, according to C40’s Deadline 2020 report. Decarbonizing buildings in cities is therefore one of the most fundamental things cities can do to help avoid dangerous climate change.


Joining the "Advancing Towards Zero Waste" Declaration by pledging to reduce the amount of waste generated by at least 15% per capita by 2030. Cities also pledge to reduce the amount of municipal solid waste disposed to landfill or incineration by at least 50% and increase the diversion rate away from landfill and incineration to at least 70% by 2030.

Contact to register your interest in participating in any of these actions.