Yellowstone Electric Company has been serving customers for more than 65 years in electrical construction, maintenance, telecommunications and data, fire alarm and special systems. Its customer base includes industrial, institutional, commercial, health care and governmental entities. The company provides complete electrical services for new construction, existing building modifications and special projects. It has worked with various area banks installing electrical and telecommunication systems, including local area networks, T1 cabling, data center UPS systems and other proprietary cabling. The company maintains a support staff that specializes in fiber-optic installation and testing, key system and private branch exchange installation and service, and computer network design and installation. Yellowstone Electric Company is located in Billings, Mont.