Highline Electric serves seven counties in Northeastern Colorado and four counties in Southwestern Nebraska. The headquarters for Highline Electric is located in Holyoke, Colorado. Branch offices are located in Sterling and Ovid, Colorado.

Currently Highline furnishes electric power to 10,449 services. The 3,208 electric irrigation motors in the service area contribute 52.1% of the energy sales to the Association. The system plant consists of 5,157 miles of transmission and distribution lines, including 27 substations.