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WWF is challenging cities to do more than turn out their lights for Earth Hour.

The Earth Hour City Challenge is a year-long competition among cities to promote renewable energy and prepare for climate change. U.S. cities that participate are recognized for their efforts in spreading the global movement to create more sustainable, resilient cities and compete for the title of U.S. Earth Hour Capital as well as grants from WWF.

Forward-thinking cities are transitioning toward 100 percent renewable energy and addressing local climate threats by implementing practical measures that improve air quality, protect water supplies and reduce urban flooding. With your help, your community can take action too.

Are You a City Official Interested in the Earth Hour City Challenge

The Earth Hour City Challenge recognizes cities for adopting renewable energy and preparing for climate-related severe weather. Joining is easy and participating cities will have a chance to be crowned the Earth Hour Capital.

Learn more about how your city can be involved

Who is Participating?


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