Since 1912, LPC has owned and operated a 500 kW hydroelectric Plant located just west of Lyons, Colorado. The plant is one of the first public power projects in Colorado, and it continues to serve its original purpose today. Each year the plant helps offset up to $173,000 in purchased power costs, benefitting LPC customers. Today, the plant contains two 250 kW generators driven by Pelton turbines. Both generators running together could supply 150-175 homes or two buildings the size of a typical retail store. Presently, the generators support about 0.5% of the entire city's electrical needs as compared to 100% in 1912.
In 1987, the U.S. Department of the Interior entered the Longmont Hydroelectric Plant on the National Register of Historic Places. On January 5, 2012, the plant reached its first century in full operation serving the Longmont community.