Roadmaps for Successful Climate Action: C40 Cities Share 100 Case Studies Proven to Work

As cities around the world look for ways to implement the Paris Declaration and meet the ambition of the UN Climate Change Conference (COP21), C40 is showcasing 100 real world examples of projects and approaches that have already proved successful in our member cities.

Eleven new C40 Good Practice Guides offer mayors and urban policymakers roadmaps for tackling climate change, reducing climate risk and encouraging sustainable urban development.

With 100 case studies taken from cities of every size, geography and stage of development around the world, the Good Practice Guides provide tangible examples of climate solutions that other cities can learn from.

“Cities are leading the way on climate change, as they proved at COP21 in Paris. But it is not just political leadership that mayors are offering, it is tangible solutions to reduce emissions, mitigate climate risks and deliver sustainable growth for their cities,” says Shannon Lawrence, C40’s Director of Global Initiatives. “As members of C40, our 83 cities understand the value of stealing each other’s good ideas to catalyse and accelerate climate action.”

For cities struggling with torrential rains and flooding, the Climate Change Adaptation in Delta Cities guide offers a range of approaches – including Copenhagen’s innovative Cloudburst Management Plan – to emulate. Rio de Janeiro’s holistic planning for the TransOeste BRT— a case study from the Bus Rapid Transit guide – serves as an example for cities planning a Bus Rapid Transit corridor and trying to measure potential benefits.

“The Good Practice Guides are a great resource that I can put to immediate practical use in planning the emissions reduction plan for the City of Melbourne,” says Kate Noble, Sustainability Officer, Melbourne. “It is also great to share our C40 best practices with outside cities to help them seize the opportunity of acting on climate change and getting the co-benefits as soon as possible.”

The Good Practice Guides identify nearly 70 categories of good practice for climate change actions in energytransportsolid waste managementurban planningadaptation and finance. C40 hopes that cities within our network and beyond will be able to adapt and replicate the concrete examples and approaches highlighted in the Guides. This will allow cities to take meaningful action on climate change more quickly, at a lower cost and achieve greater impact than if they were acting alone.

Download the Good Practice Guides below:

Changing Planet


Meet the Author
The C40 Cities Climate Leadership Group (C40) is a network of large and engaged cities from around the world committed to implementing meaningful and sustainable climate-related actions locally that will help address climate change globally. Recognizing that cities consume over two-thirds of the world’s energy and account for more than 70% of global CO2 emissions, our organization’s global field staff works with city governments, supported by our technical experts across a range of program areas to reduce carbon emissions and increase energy efficiency in large cities across the world. The current chair of the C40 is Rio de Janeiro Mayor Eduardo Paes, and 108th Mayor of New York City Michael R. Bloomberg is President of the Board. The Steering Committee includes: Berlin, Buenos Aires, Copenhagen, Hong Kong, Houston, Jakarta, Johannesburg, London, Los Angeles, Rio de Janeiro, Seoul and Tokyo.