Our Partners & Funders

Strategic Funders

The work of C40 is made possible through the generosity of a growing number of partners and supporters that share our goals and objectives.

Bloomberg Philanthropies

Strategic Funder

Bloomberg Philanthropies works in over 120 countries around the world to ensure better, longer lives for the greatest number of people. The organization focuses on five key areas for creating lasting change: Arts, Education, Environment, Government Innovation, and Public Health. Bloomberg Philanthropies encompasses all of Michael R. Bloomberg’s charitable activities, including his foundation and his personal giving. In 2017, Bloomberg Philanthropies distributed $702 million.
For more information, please visit www.bloomberg.org or follow us on Facebook, Instagram, Snapchat, and Twitter.


Children's Investment Fund Foundation (CIFF)

Strategic Funder

The Children’s Investment Fund Foundation (CIFF) is an independent philanthropic organisation headquartered in London with offices in Nairobi and New Delhi and a presence in Ethiopia. CIFF works with a wide range of partners seeking to transform and empower the lives of poor and vulnerable children in developing countries, with the ultimate goal of solving seemingly intractable challenges to ensure all children have the chance to survive and thrive.
CIFF aims to play a catalytic role as a funder and influencer to deliver urgent and systemic change at scale. The organisation’s climate portfolio is driven by a vision of a climate-safe future for today’s children and future generations that also bear the benefits of cleaner air, energy security and sustainable jobs. 
Founded in 2003, CIFF employs approximately 100 professionals in England, Kenya, India and Ethiopia. CIFF strives to couple business acumen and principles with development experience and best practices to transform the landscape for children. It seeks to be the gold standard in grant making and foundation operations.




Strategic Funder

Realdania is a philanthropic association with around 149,000 members. The association seeks to improve quality of life through the built environment, defined as the physical settings for our everyday life. Realdania is focused on both living and future generations and seeks to promote sustainability and generate new knowledge and innovation. Since 2000, Realdania has supported more than 3,200 projects with a total of DKK 17 billion. Anyone in Denmark who owns real estate can become a member.


Additional Funders & Partners

C40's partners understand the relationship between cities and climate change and are committed to advancing urban leadership in driving solutions. C40 is grateful to be working with a growing number of dedicated partners.

Clinton Climate Initiative, Clinton Foundation


C40 works in an aligned partnership with the Clinton Climate Initiative (CCI) Cities program, which was started by the Clinton Foundation.

Watch 42nd President of the United States, William J. Clinton, founder of the Clinton Foundation and prominent champion of climate initiatives, wish C40 a happy 10th anniversary.



Arup is an independent professional services consortium that delivers innovative and sustainable solutions in a broad range of disciplines.

Arup is a firm that values learning. Our partnerships with global organisations like C40 enable an exchange of knowledge and ideas and help make a positive difference in society. Such partnerships reinforce our commitment to sustainability, both in the work we do for our clients and the way we run our business.

In June 2015, Arup signed a major partnership with C40, committing $1 million of consultancy support over three years to help cities take meaningful action against climate change. Read more about Arup’s partnership with C40 or watch the video below.

Since 2011, C40 has partnered with Arup to create the Climate Action in Megacities Report, a comprehensive analysis of what the mayors of the C40 megacities are doing to tackle climate change.

OAK Foundation


Oak Foundation commits its resources to address issues of global, social and environmental concern, particularly those that have a major impact on the lives of the disadvantaged. With offices in Europe, Africa, India and North America, Oak Foundation makes grants to organisations in approximately 40 countries worldwide.


Citi Foundation


Citi and the Citi Foundation support the climate finance activities of C40 Cities, with the goal of helping cities lower their carbon emissions and reducing the impacts of climate change. The partnership provides advice and support to cities through the publication of good practice guides, and also organizes forums and webinars jointly. In 2015, C40 Cities partnered with the Citi Foundation and the WRI Ross Center for Sustainable Cities to launch an initiative that focuses on scaling up sustainable urban services to support cities to deliver their transformative visions for a sustainable future.


Novo Nordisk


In late 2015, Novo Nordisk and C40 formed a research-based partnership aimed at ensuring that green policies in cities are beneficial to both the  environment and the health of urban citizens. Under this collaboration, the organizations’ expertise and specialist knowledge will combine to generate new insights on a range of benefits of climate action – in particular the health of city populations. At the heart of the partnership lies the pivotal role of cities in the fight against climate change and poor health. City lifestyles are contributing to the diabetes epidemic and two thirds of the world’s 415 million people living with the condition can be found in urban areas.



As a technology leader, Mastercard is committed to being a driving force in the private sector to make cities better and to make better cities. To demonstrate this commitment, Mastercard funds the Mobility Management Network which seeks to support cities in delivering strategies and measures that reduce GHG emissions by improving the customer experience of transit, making public transit more attractive and easier to use, as well as reducing and re-distributing travel demand, to help unlock capacity and meet the city’s broader transport objectives.



C40 is supported by the UK Government through The Department for Business, Energy and Industrial Strategy(BEIS). BEIS brings together responsibilities for business, industrial strategy, science, energy and climate change. The department is responsible for developing and delivering a comprehensive industrial strategy and leading the government's relationship with business.

Ministry of Foreign Affairs Denmark


The Danish Foreign Service operates globally to work for Denmarks' interests and values in relation to the surrounding world in a manner that furthers the freedom, security and welfare of Danes in a more peaceful and just world, with development and economic growth for all. The Danish Foreign Service comprises the Ministry of Foreign Affairs in Copenhagen and a global network abroad of Embassies, Consulates-General and Trade Commissions.



Since 2008, the International Climate Initiative (IKI) of the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) has been financing climate and biodiversity projects in developing and newly industrialising countries, as well as in countries in transition. Based on a decision taken by the German parliament (Bundestag), a sum of at least 120 million euros is available for use by the initiative annually. The Initiative places clear emphasis on climate change mitigation, adaption to the impacts of climate change and the protection of biological diversity. These efforts provide various cobenefits, particularly the improvement of living conditions in partner countries.

Cities Alliance


Cities Alliance is a global partnership for the promotion of cities in poverty reduction and sustainable development. It is a unique partnership with a diverse membership including – global organisations of local authorities, national governments, international non-governmental organisations, foundations, knowledge networks and multilateral organisations – which have come together to strengthen both impacts and coherence in urban development.



ROCKWOOL Group and C40 Cities Climate Leadership Group have formed a 14-month joint research effort to demonstrate the climate and other benefits that building renovations can generate and to assist cities in making cost-efficient investment decisions.   Across C40 cities, building energy consumption accounts for nearly 60% of GHG emissions – and thus represent a significant opportunity for cities to reduce their climate impact while improving their citizens’ health, wellbeing, safety and even their productivity A key focus of the research collaboration will be to develop an assessment methodology to assist cities in measuring this broader range of benefits that energy and related building renovations can generate.

Johnson & Johnson


Caring for the world, one person at a time, inspires and unites the people of Johnson & Johnson. We embrace research and science - bringing innovative ideas, products and services to advance the health and well-being of people. Our approximately 126,900 employees at more than 250 Johnson & Johnson operating companies work with partners in health care to touch the lives of over a billion people every day, throughout the world.

Ford Foundation


The Ford Foundation's goals are to strengthen democratic values, reduce poverty and injustice, promote international cooperation and advance human achievement. The Ford Foundation is working with C40 to support global cities to become more compact and connected, thereby minimising vehicle kilometres travelled and increasing access to public transportation while also increasing economic prosperity by connecting housing to economic and employment opportunities.

Ramboll Fonden


The Ramboll Foundation is an independent Danish enterprise foundation with philanthropic obligations. It was established in 1972 by the founders of Ramboll, Børge Rambøll and Johan Hannemann and three other partners. The Foundation is the main owner of Ramboll Group A/S, and in addition also awards significant donations to research, studies and education, aids employees and their families in special need, and supports charities and humanitarian projects in general.






Qlik is supporting C40 Cities to bring the power of data and analytics to the world’s megacities in the fight to reduce greenhouse gas emissions and climate risks. Through Qlik’s Corporate Responsibility program, organizations around the world receive products and services to help environmental, humanitarian and community-focused, non-profit organizations make sense of complex information and address issues related to climate change.

Qlik delivers intuitive platform solutions for self-service data visualization, guided analytics applications, embedded analytics and reporting to approximately 48,000 customers worldwide. Companies of all sizes, across all industries and geographies, use Qlik solutions to visualize and explore information, generate insights and make better decisions. Qlik has been positioned by Gartner, Inc. in the Leaders quadrant of the Magic Quadrant for Analytics and Business Intelligence Platforms for eight consecutive years.



Navigant Consulting, Inc. is a specialized, global professional services firm that helps clients take control of their future. Navigant’s professionals apply deep industry knowledge, substantive technical expertise, and an enterprising approach to help clients build, manage, and/or protect their business interests. With over 600 consultants, Navigant’s global Energy segment is the largest energy and climate change management consulting team in the industry. We collaborate with cities, utilities, government and NGOs, industries and large corporations, product manufacturers, and investors to help them thrive in a rapidly changing energy environment, build resilience to a changing climate, transform their businesses, manage complexity and accelerate operational performance.



The EAT Foundation builds on the work of the EAT Initiative, created by the Stordalen Foundation and Stockholm Resilience Centre in 2013. Together with the Wellcome Trust, they launched the EAT Foundation in March 2016. The EAT foundation’s ambition is to reform the global food system and enable us to feed a growing global population with healthy food from a healthy planet. The three organisations will use their unique experience in health, science, policy and sustainability to convene experts and decision makers who can transform the way we eat.

World Bank


In 2011, C40 partnered with the World Bank in an agreement announced during the C40 Mayor’s Summit in Sao Paulo. This agreement will strengthen cooperation between the two organisations by establishing a consistent approach to cities’ climate action plans and greenhouse gas emissions measurement and reporting. Common international metrics will help to better track progress against targets. Equally important, metrics will facilitate cities' access topublic and private sources of capital for climate mitigation and adaptation projects. The World Bank offers a single entry point for C40 cities to access World Bank climate change-related capacity building and technical assistance programs, and climate finance initiatives. This ‘one window’ access helps city governments understand what World Bank resources exist and how to tap into them.



C40 began partnering with CDP (formerly The Carbon Disclosure Project) in June 2011 to bring self-reported data from the world’s largest cities into a comprehensive report on cities’ greenhouse gas emissions and climate risk data. Today, the collaboration includes C40-specific open data portals, premised on the belief that better, more transparent measurement leads to better management. With the right processes in place in partnership with CDP, cities can share strategic insights and reduce their exposure to climate risks and impacts. 




In June 2011, C40 partnered with ICLEI — Local Governments for Sustainability. This partnership will establish a global standard for accounting and reporting community-scale greenhouse gas emissions that can be used across multiple platforms. It can help local governments accelerate their emission reduction activities, whilst meeting the reporting requirements of climate financing and national monitoring entities.




Autodesk, a leader in 3D design, engineering and entertainment software, is proud to support the C40 Women4Climate Tech Challenge.

International Advertising Association


The International Advertising Association (IAA) has partnered with C40 to launch #CitiesAreKey, a new global social and digital ad campaign designed to amplify the leadership role of cities in the lead-up to the international COP21 climate negotiations in Paris in December. The campaign, announced via continuous ads on the iconic ‘Grand Screen’ digital billboard throughout the weeklong Cannes Lions International Festival of Creativity, will capitalize on key moments on the Road to Paris to spread global awareness about cities’ potential to help deliver emissions reductions necessary by 2020 to limit global warming to two degrees Celsius. Sponsoring and creative partners on the effort also include Clear Channel Outdoor (CCO) and DM9 Jayme SyFu (DM9).




Clear Channel Outdoor is one of the world’s largest outdoor advertising companies with more than 680,000 displays reaching more than half a billion people every month across Asia, Europe, Latin America and North America. With our large, diverse portfolio, we can draw on our insights into location and audience to collaborate with advertisers on powerful out-of-home campaigns, creating new ways for brands to start conversations with people on the move. All our businesses are oriented towards supporting their workforce, their local communities and the environment. Our activities include reducing our carbon footprint and enhancing the urban environment, from charity partnerships or sponsored cultural events Clearchannel is a Gold Sponsor for the 2016 C40 Mayors Summit.

Climate and Clean Air Coalition


A transformative global partnership of countries, international organizations, NGOs, and the private sector, seeking to rapidly reduce short-lived climate pollutants (SLCPs) like black carbon, methane, and HFCs. Together with C40, the CCAC launched the Municipal Solid Waste Initiative at the UN Rio+20 conference, where Michel Bloomberg, former Mayor of New York, former President Bill Clinton, and Governor Babatunde Fashola of Lagos, Nigeria encouraged cities around the world to join.

This partnership brings together organizations and governments with decades of experience across the municipal solid waste sector, including: U.S. EPA, Environment Canada, Ministry of Environment Japan, the Global Methane Initiative, the World Bank, the UN Environment Programme, the International Solid Waste Association, the Clinton Climate Initiative Waste and Water Team, the Center for Clean Air Policy, the Institute for Global Environmental Strategies, and many others. The partnership brings together technical experts, policy-makers, and cities to learn, plan, and take action.

Institute for Transportation and Development Policy (ITDP)


The Institute for Transportation and Development Policy (ITDP) provides technical transport and planning expertise to local authorities in cities around the world – promoting transport solutions that cut greenhouse gas emissions, reduce poverty, and improve the quality of urban life.

C40 and ITDP signed an MOU in June 2012 to work together towards shared goals of reducing greenhouse gas emissions and supporting adaptation measures through sustainable and equitable transportation policies and projects in C40 cities.