Colorado Utility Energy Efficiency Programs

Updated: December 2018


Colorado is served by two investor-owned utilities: Xcel Energy and Black Hills Energy. Xcel is the largest electric utility in the state, providing 53 percent of Colorado's electricity. In 2017, Xcel Energy served more than 1.4 million customers primarily in the Denver metropolitan area.
Black Hills Energy provides 4 percent of the electricity load in the state with about 96,000 customers in 21 communities, including Canon City, Pueblo, Rocky Ford and Florence. Twenty-two rural electric associations and twenty-nine municipal utilities handle the remaining electric customers in Colorado.
Municipal utilities provide about 16% of the electricity consumed in the state. The largest municipal utilities are Colorado Springs Utilities and Fort Collins Utilities. Rural electric cooperatives provide about 28% of the electricity consumed in Colorado.
Natural gas is provided by Xcel Energy, Black Hills Energy, Colorado Natural Gas, and Eastern Colorado Utility Company along with eight municipal utilities.  In 2015, these companies served nearly 1.9 million customers.

Electricity Demand-Side Management by Electric Utility

Natural Gas Demand-Side Management