Distributed power generation at the point of load such as solar panels on roofs minimize the need for transmission lines in contrast with huge centralized power plants. Xcel owns both transmission lines and power plants, so alternatives such as Community Choice Aggregation (CCA) where Boulder could buy clean power from non-Xcel sources without buying Xcel’s transmission lines have not been authorized.
Read the entire article at Denver Green Streets: Power To The People: Boulder’s Struggle for Local Control.