The plan calls for closing two older units at the Comanche Generating Station — one in 2022 and one in 2025. A third, newer unit would keep operating.
Aspen set the 100 percent renewable goal in 2006 as part of its Canary Initiative, a climate action plan aimed at reducing the city’s carbon footprint 30 percent by 2020.
The president-elect's nomination of former Texas Gov. Rick Perry to lead the U.S. Department of Energy has raised concerns among clean energy advocates.
Health giant Kaiser Permanente is investing heavily in renewables and other green measures, like energy efficiency and waterwise landscapes. Many Colorado-based companies are following suit.
Trump has called global warming a hoax and he criticized wind and solar power as "so expensive." That leaves hope for renewables resting on state policies.
As governor, Bill Ritter made clean energy a priority. Now he says that the U.S. needs to move even faster to mitigate effects of climate change.
Gov. Bill Ritter championed renewable energy when he was in office and continues promoting the cause in his book “Powering Forward: What Everyone Should Know About America’s Energy Revolution.” Ritter now directs The Center for the New Energy Economy at Colorado State University in Fort Collins. Then, Denver band the Lumineers on the inspiration for their new album “Cleopatra.”
- The upgrade would deliver renewable energy over longer distances, researchers say.Read more
- Only Burlington, Vermont, and Greensburg, Kansas, have also managed a complete switch.Read more