Core Partners

The Million Cool Roofs Challenge is a project of the Kigali Cooling Efficiency Program (K-CEP) in collaboration with the Global Cool Cities Alliance, Sustainable Energy for All and Nesta’s Challenge Prize Centre and supported by the World Resources Institute. Below you can find an introduction to each partner, along with their role in the Challenge.

MCR Partners Logo.png

Kigali Cooling Efficiency Program

K-CEP is a philanthropic program to support the Kigali Amendment of the Montreal Protocol. 17 foundations and individuals have pledged $52 million to help developing nations transition to more energy efficient cooling whilst they phase down the production and use of hydrofluorocarbons and replace them with newer, climate-safe coolants.

K-CEP is the lead organisation and funder of the Million Cool Roofs Challenge, and is responsible for overall strategic decision making, as well as communications and outreach activities, events and the awarding and contracting of the final $1 million prize.


Global Cool Cities Alliance

Global Cool Cities Alliance (GCCA) launched in 2010 to accelerate a world-wide transition to cooler, healthier cities. Its mission is to advance urban heat island mitigation policies and programs to promote more efficient and comfortable buildings, healthier and more resilient cities, and to cancel some of the warming effects of climate change through global cooling. Increasing the solar reflectance of urban surfaces such as roofs and roads is a cost-effective strategy to achieve these goals.

GCCA is the technical lead on the Million Cool Roofs Challenge and responsible for providing expert and scientific input to the programme. This includes developing instructional materials and guidance, material and procedural standards, and expert technical assessment of entrants. GCCA also contributes to communications and outreach activities.


Sustainable Energy for All

Sustainable Energy for All (SEforALL) is an international organisation working with leaders in government, the private sector and civil society to drive further, faster action toward achievement of Sustainable Development Goal 7, which calls for universal access to sustainable energy by 2030, and the Paris Climate Agreement, which calls for reducing greenhouse gas emissions to limit climate warming to below 2 degrees Celsius.

SEforALL co-authored with K-CEP the report, Chilling Prospects: Providing Sustainable Cooling for All, that was key to the genesis of the Million Cool Roofs Challenge. They are supporting the Challenge through communications and outreach, as well as providing input and guidance to delivery of the Challenge.


Challenge Prize Centre

Nesta is a global innovation foundation with a mission to spark and shape new ideas to improve how the world works for everyone. Within Nesta, the Challenge Prize Centre uses prizes to stimulate innovative solutions to some of the biggest challenges we face. Challenge prizes are a simple but powerful idea. A problem or opportunity is identified, the challenge is publicised and rewards offered to those who can deliver the best solutions.

Nesta’s Challenge Prize Centre is the programme design and delivery partner for the Million Cool Roofs Challenge. They are responsible for the research and design of the programme prior to launch, designing and delivering the assessment process, and awarding and contracting the $100,000 Boost Awards.



Affiliates are not official partners of the prize. They are organisations that have shared our content and endorse the prize.

World Resources Institute

WRI is a global research organization that spans more than 50 countries, with offices in Brazil, China, Europe, Ethiopia, India, Indonesia, Mexico, the United States and more. WRI’s more than 700 experts and staff work closely with leaders to turn big ideas into action at the nexus of environment, economic opportunity and human well-being.

WRI is a Strategic Partner to the Million Cool Roofs Challenge, supporting the programme through strategic and technical advice, as well as communications and outreach activities. 


ASHRAE is a global professional organization of 57,000 members in 132 countries seeking to advance design for heating, ventilation, and air conditioning equipment. ASHRAE develops and maintains model building and energy standards that are used throughout the world by local, regional, and national governments.   ASHRAE is kindly supporting the programme throughout the communications and outreach activities.