Electric Power Systems provides electrical testing and engineering services. The company offers low and high voltage substations, AC and DC hi-potential, power circuit breaker, transformer, ground, generator load and system, control system acceptance, battery, and UPS acceptance testing services. It also provides oil handling and processing, relay and meter calibration, infrared thermographic survey, insulating liquid analysis, ground grid designing, arc flash analysis, and substation and transformer repair, commissioning, and insulating oil services. Additionally, the company offers short circuit and coordination, power factor, harmonic and power quality, load flow, and motor starting and load studies. Electric Power Systems was founded in 1977 and is based in Maryland Heights, Missouri.