The Colorado mountain town was already more than 75 percent along in its goal and achieved the full transition Thursday when it signed a contract with a wholesale energy provider.

The goal of 100 percent renewable energy was stated in the city's Canary Initiative that was launched 10 years ago.

Burlington, Vermont  and Greensburg, Kansas  were the first two cities to go to 100 percent renewable energy.

Read more about renewable energy here.

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Ceudy Gutierrez reads a book to her 2-year-old son, Matias, at their home in Buford, GA, on Tuesday, Nov. 18, 2025. Ceudy Gutierrez is struggling to make ends meet for herself and her three young kids following her husband’s ICE arrest earlier this fall. (Miguel Martinez/ AJC)

Credit: Miguel Martinez-Jimenez