The 2015-2016 CoolCalifornia Challenge was a competition between 22 California cities to motivate and reward residents for reducing their carbon footprints and help build more vibrant communities. The Challenge ended on March 30, 2016. The top three winning cities are:


  1. Claremont, the Coolest California City
  2. Long Beach, the Cool California City
  3. Burlingame, the Cool California City

Click here to read the press release announcing the winners and final results.

To see how all cities ranked and their total points, click here.


Collectively, the 22 participating cities engaged nearly 3,200 households to take energy savings actions to reduce their carbon footprint. In total, the participants reported that they completed actions that will save 5,638 metric tons of carbon dioxide over the energy saving actions’ lifetime, equivalent to removing more than 2,500 California homes from the grid or over 1,100 automobiles from the road for a year. 

Households tracked driving and home energy use and completed bonus actions to earn points for their city. Each point earned increased the amount of total prize money cities won. All prize money will be used to fund a local sustainability project of the city’s choice.


The Challenge is a partnership between Energy Upgrade California®, the program at the California Air Resources Board, and the Cool Climate Network at the University of California, Berkeley’s Renewable and Appropriate Energy Laboratory.

Important Upcoming CoolCalifornia Challenge Date

Earth Week, April 21, 2016: The top three cities to be presented with an award at Green California Summit in Sacramento, CA

Mayor Videos

These Mayors and Councilmembers took the Challenge to the next level by motivating their residents to do more. Check out their videos by clicking on the links below. 

Press Release

Participating Cities

Which Cities are in the Challenge? If you live in any of the cities below, join the Challenge!



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