Ski-Hi Daily News
January 28, 2010, Julie Sutor

Large utility companies in Colorado could be held to a higher standard when it comes to renewable energy. State lawmakers are crafting legislation that would require large electricity suppliers to generate at least 30 percent of their electricity from renewable sources, such as wind and solar energy....

http://www.skyhidailynews.com/article/20100128/NEWS/100129880/1079&ParentProfile=1067