EPC Services Company operates as part of Electrical Consultants, Inc. (ECI), a power delivery engineering firm founded in 1985 and headquartered in Billings, Montana. The firm serves electric utilities, energy developers and industrial clients across the United States, working on high-voltage transmission, substation and distribution systems. It employs over 1,000 professionals and support staff through 37 offices nationwide, making it one of the largest power delivery engineering firms in North America.
Its work spans system voltages from 4.16 kV through 765 kV. Core disciplines include transmission, substation and distribution engineering, power system protection and relay applications, system planning and studies, engineering design and project management. The company also performs surveying, environmental planning, commissioning and testing, and construction services, and supports renewable energy collection, delivery and storage projects across the country. Power system protection capabilities were strengthened through the acquisition of Relay Application Innovation, Inc.
The company is employee-owned. Roles range from engineering and design to field-based work in surveying, commissioning and testing, and construction services, alongside project management and environmental planning functions.
