Starting June 1, Glenwood Springs will "provide 100 percent renewable energy" to all its residents.

GLENWOOD SPRINGS, Colo. — A Colorado city is set to become the nation's seventh municipality powered entirely by renewable energy sources.

The Post Independent reported Wednesday that the mayor of Glenwood Springs and an official from the Municipal Energy Agency of Nebraska signed an electric supply contract during a public ceremony Wednesday at the Glenwood Caverns Adventure Park.

Mayor Jonathan Godes says the contract beginning June 1 will "provide 100 percent renewable energy" without additional rate increases for residents of the city 157 miles (253 kilometers) west of Denver.

The city council in April unanimously approved purchasing electricity through a wholesale power contract with the agency.

The city says in a statement that the switch to 100% wind power will prevent 77,156 tons of CO2 emission that would have been generated by fossil fuels.