High Voltage Maintenance was one of the first companies in the United States to specialize in the testing and maintenance of electrical power distribution systems and equipment. The company has nearly 15 service centers located throughout the Midwest and New England area. It has been a leader in electrical equipment testing and maintenance since 1960. High Voltage Maintenance is a member of Emerson Process Management's Asset Optimization Division, owned by Emerson of St. Louis. Emerson s Asset Optimization Division brings together a combination of world-class services and technologies to help improve process availability, increase productivity and reduce equipment cost-of-ownership throughout the full spectrum of plant assets. High Voltage Maintenance is headquartered in Dayton, Ohio.