Willmar Municipal Utilities electric transmission power system consists of 2 substations and 35 miles of power lines which supply power at 69,000 volts, or higher, from the area electric grid to the city of Willmar. The electric distribution power system consists of 5 substations which step down the voltage from 69,000 volts to 12,470 volts. The current is then distributed through 18 feeder lines to neighborhood transformers to serve over 9,200 electric customers. The system has 230 miles of power lines of which 87% are underground. The peak demand for the city of Willamr in 2019 was 56.99 megawatts.