INTREN, LLC Email Format
ConstructionIllinois, United States501-1000 Employees
INTREN, LLC is a construction company focused on energy infrastructure, delivering end-to-end services to build and maintain electrical systems for utilities and related clients. It serves a diverse client base including utility companies, private contractors and developers, municipalities, and cooperatives, with safety, quality, and performance guiding its operations. It is headquartered in Union, Illinois, and maintains offices in several states across the United States. Founded in 1988 by Loretta Rosenmayer as a trenching business, INTREN was acquired by MasTec in 2021, with MasTec identified as a minority-owned company leading in power delivery. In 2025, the company expanded its capabilities by investing in energized transmission assets in Florida to support electric utilities with grid stability and outage management.