Defining Carbon Neutrality for Cities & Managing Residual Emissions
If cities are to drive the rapid and systemic change The Paris Agreement prescribes, then it is crucial there is a clear guidance for cities on what citywide carbon neutrality looks like and how to implement and realise both interim milestones and carbon neutrality.
Municipality-led circular economy case studies
Circular flows of materials in cities promises job creation, operational savings, less waste and lower carbon emissions, but how does it work in practice? How can a city municipality catalyse a transition from a linear economy of make, use, dispose, to a circular economy?
C40 have researched 40 in-depth case studies from cities around the world, demonstrating how municipalities can advance towards zero waste economies. Download the report here.
Urban Climate Action Impacts Framework: A Framework Describing and Measuring the Wider Impacts of Urban Climate Action
This document presents an Urban Climate Action Impacts Framework (UCAIF or ‘the Framework’) that can be applied when exploring the wider impact of city climate action, and builds on the work started by C40 and LSE. The report functions as a user guide with common principles, taxonomy and guidelines for approaching the mapping and assessment of those wider impacts. The outputs of the work aim to catalyse medium-term development of the tools, resources and evidence cities need to make the case for climate action by linking that climate action to the other priorities they face.
Understanding Infrastructure Interdependencies in Cities
The damaging impacts of the climate crisis pose a major threat to cities. It is critical that we understand best practices and the barriers cities face when it comes to making infrastructure and their connections climate-resilient – that’s why we’re launching the ‘Understanding infrastructure interdependencies in cities’ report with AXA. The report outlines the progress that cities are already making, and provides practical recommendations on how to overcome these challenges and improve resiliency.
Constructing a New Low Carbon Future: How Chinese cities are scaling ambitious building energy efficiency solutions.
The C40 China Buildings Programme (C40 CBP) has launched a new report, Constructing a New Low Carbon Future: How Chinese cities are scaling ambitious building energy efficiency solutions. Authored by C40 Cities and the Lawrence Berkeley National Laboratory China Group (LBNL-CG), this report details how the C40 CBP will assist the cities of Beijing, Fuzhou, Qingdao, and Changing District Shanghai as they develop, implement and scale ambitious city-wide building energy efficiency policies linked to the Thirteenth Five Year Plan. In addition, the report showcases existing urban policy achievements in the sphere of building energy efficiency and embedded renewables, with examples from both China and around the world.
Read the report in Chinese.
Toward a Healthier World
C40 and Johnson & Johnson are working in partnership to connect the dots between climate action, improved air quality and better health amongst citizens. C40 has undertaken cutting-edge research to demonstrate the air quality and health benefits of climate action - working with 26 cities to date to measure potential health gains and use this to make a stronger case for action. Based on these learnings, C40 and Johnson & Johnson are setting out a call to action on the challenge and the opportunity for all cities.
Deadline 2020 is the first significant routemap for achieving the Paris Agreement, outlining the pace, scale and prioritization of action needed by C40 member cities over the next 5 years and beyond.
Read the report in French.
Realising the Multiple Benefits of Climate Resilience and Inclusive Development in Informal Settlements
This study by C40, Cities Alliance, IIED, SDI, UNHabitat and ICLEI explores how upgrading informal settlements can lead to multiple climate resilience, inclusive, and low carbon development benefits. The report presents a case study of a holistic intervention in Mukuru, Nairobi, analysing the benefits of ten specific upgrading actions and offering several key recommendations for international, national, local policymakers and NGOs for future upgrading initiatives in informal settlements in cities.
Climate Opportunity: More Jobs; Better Health
As cities around the world accelerate efforts to meet their commitments to the Paris Agreement, new research from C40 Cities, The Global Covenant of Mayors for Climate & Energy and the New Climate Institute, shows that ambitious urban climate policies can vastly reduce carbon emissions globally as well as effectively deliver enormous economic and public health benefits for cities.
Climate Opportunity: More Jobs; Better Health; Liveable Cities estimates that by 2030, a boost in urban climate action can prevent approximately 1.3 million premature deaths per year, net generate 13.7 million jobs in cities, and save 40 billion hours of commuters’ time plus billions of dollars in reduced household expenses each year.
Download Summary here.
Measurement & Planning
Consistent measurement is the first step in effective management. The Measurement and Planning Initiative, housed within C40 Research, focuses on building capacity in member cities to tackle climate change strategically through the measurement of GHG emissions and climate impacts, annual reporting of climate data, and development of climate action plans. These efforts are provided through three workstreams: Measurement; Reporting; and Climate Risk and Adaptation Framework and Taxonomy. Most recently, the Initiative launched an interactive dashboard with four unique ways to explore historical GHG emissions of C40 cities reported via the standardized GPC protocol.
Consumption based GHG emissions of C40 cities
New research by C40 Cities, the University of Leeds, University of New South Wales, and Arup examines the greenhouse gas (GHG) emissions associated with goods and services consumed by residents of cities such as food, clothing, electronic equipment, airplane travel, delivery trucks and construction industries. The findings reveal a detailed picture of the supply chains and sphere of impact that mayors, businesses and citizens can potentially influence with their climate action.
Focused acceleration: A strategic approach to climate action in cities to 2030
This Report identifies 12 opportunities that have the greatest potential in most global cities to curb emissions and put cities on a 1.5°C pathway through 2030.
Electric Buses in Cities: Driving Towards Cleaner Air and Lower CO2
Cities around the world are introducing electric buses, driven by growing concerns over urban air quality, carbon emissions and potential operational cost savings. The timing is now right for cities to start shifting to electrified transport but there are still several barriers to widespread adoption.
Deadline 2020: Special Report on U.S. Cities
Deadline 2020: How U.S. cities will get the job done is an analysis of the contribution U.S. cities can make to delivering the Paris Agreement objective of limiting global temperature rise to 1.5 degrees Celsius. This report and its findings reinforce the positive influence and action seen from U.S. C40 cities to date, with plenty of reasons to be confident that this will continue.
Télécharger la Note de Synthèse en Français.
Case Study Library
C40 case studies highlight the wealth of sustainable and urban innovation underway in our member cities. We invite you to explore the library to discover topics of interest to your city.
In the lead-up to COP21 in Paris, C40 and Sustainia have a shared mission to showcase 100 leading city solutions to climate change. The resulting publication, Cities100, will highlight the need for adapting new policies and celebrate the range of possible actions.
Urban Efficiency II: Seven Innovative City Programmes for Existing Building Energy Efficiency
Urban Efficiency II: Seven Innovative City Programmes for Existing Building Energy Efficiency builds on research in the successful predecessor “Urban Efficiency” Report and captures seven new detailed city case studies from C40 member cities. It is primarily targeted at city-level policy makers and decision makers across the world. The report increases the resource and evidence base available to support cities understanding of the characteristics and impact of innovative city programmes emerging across C40 cities, that advance operational energy efficiency and retrofitting in existing, privately owned buildings.
Open Data Portal
The Open Data Portal provides direct, interactive access to the wealth of statistical information provided annually by C40 cities. Through the Open Data Portal, it is possible to access and investigate a number of data sets on C40 cities, including GHG Emissions Inventories, Reduction Targets, and Citywide Risks. The Open Data Portal is another step towards providing increased access and availability regarding the impact and ambition of C40 cities.