Support WBURIt's Not Easy, But Aspen Moves Toward 100 Percent Renewable EnergyPlay03:46Download AudioGrace HoodJuly 05, 2017 ShareIn 2015 Aspen, Colo., reached 100 percent renewable energy powering of its electric utility. "Getting the last 25 percent was a huge challenge for us," says Aspen Mayor Steve Skadron. (Colorado Public Radio)
