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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Prosecutor Skandalakis has previously suggested that pursuing criminal charges against President Donald Trump may not be feasible until after he leaves office in 2029. (Craig Hudson/Politico/Bloomberg via Getty Images)

Credit: Bloomberg via Getty Images