MMR Group is the largest open-shop electrical and instrumentation contractor in the United States, founded in 1991. The company employs approximately 5,500 people, generates annual revenues approaching $1 billion, and ranks highly on Engineering News-Record's list of specialty contractors. It completes projects involving millions of work-hours across its technical domains.
Core services include electrical construction, instrumentation, and technical support, with specialized offerings such as fabricated pipe systems, fiber optic solutions through MMR Fiber Solutions, and power generation projects via MMR Power Solutions and Southwestern Power Group. These operations span North America and South America.
The company serves multiple industry verticals, including chemical and petrochemical, oil and gas (upstream and midstream), industrial manufacturing, power generation, renewable energy and energy storage, and mission-critical construction. Its workforce is organized around a commitment to safety, quality, and client satisfaction, supported by award-winning performance.
