Founded in 1902, Dyersburg Electric System is a public utility that is governed by the city of Dyersburg in Tennessee. It has more than 395 miles of line and is organized under the 1935 Electric Plant act. Dyersburg Electric System employs contractors to help with large projects, tree trimming, and after-hour security and telephone services. The public utility operates over 10 substations that serve nearly 12,500 customers. Dyersburg Electric System uses a computer-controlled supervisory control and data acquisition system to monitor several critical components of the system. It offers lighting services and heat pumps. The company s references include the Tennessee Valley Public Power Association and the Appa American Public Power Association.