New InitiativesThe One Million Cool Roofs Challenge
A first-of-its-kind, $2 million USD initiative to accelerate the transformation to cool surface in places that need it most.
DiscoverUnlock the Benefits of Cool Roofs
Choosing a cool roof could help generate hundreds of millions of dollars, save lives, and make your town a nicer place. Use this interactive feature to explore the problems attributed to excess urban heat, and see how cool surfaces can help.
About UsCool Cities Are Sustainable Cities
Global Cool Cities Alliance helps cities, countries, and others cost-effectively save energy, improve health and quality of life, and combat climate change by reducing excess urban heat.
Stockholm Photography
About UsCities taking action to reduce excess heat.
The Cool Cities Network is a partnership with C40 to connect cities and experts to understand, communicate about, and reduce excess urban heat.
John Nelson
Key InitiativesExplore the Toolkit
The Cool Roofs and Cool Pavements Toolkit is an online resource to help cities, regions, organizations and building owners develop and deploy successful cool surface initiatives.
The ScienceAddressing Climate Change with Cool Surfaces
Switching to cool roofs cancels the warming effect of 500 coal power plants worth of GHG emissions.Learn more about the science.
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The ScienceThe Trillion Dollar Opportunity for Cities
Urban heat could cost cities up to 11% of their economic output by 2100. But UHI mitigation could generate billions in health, energy, and economic benefits. Learn more about the science.
Latest Updates
Cooling the world's cities with solar reflective urban surfaces is an easy, cost-effective first step toward cooling the planet.
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New Initiatives The One Million Cool Roofs Challenge A first-of-its-kind, $2 million USD initiative to accelerate the transformation to cool surface in places that need it most.
Discover Unlock the Benefits of Cool Roofs Choosing a cool roof could help generate hundreds of millions of dollars, save lives, and make your town a nicer place. Use this interactive feature to explore the problems attributed to excess urban heat, and see how cool surfaces can help.
