As part of its ongoing effort to become greener, San Miguel Power Association has launched a new program that allows customers to obtain electricity from 100 percent renewable sources for anywhere from a few cents to a few dollars a month.

And lest you think it’s some sort of gimmick, the rural electric cooperative has followed suit, purchasing enough renewable energy certificates to ensure its offices and facilities in Ridgway, Nucla, Silverton and Telluride are fully powered by carbon-fre...