The majority of our services are performed by MasTec. However our team of expert subsidiary companies complements who we are and empowers us to do all we do. They support our diverse range of infrastructure construction services, as well as the professional support and extensive job history our customers need. By combining the skills and expertise of each, we're able to achieve a deep and comprehensive understanding of the markets we serve, and to provide our customers with a full-service solution to just about any infrastructure construction need. Whether we're designing, building, expanding, or maintaining your project, we have the experience and resources to maximize efficiencies for a job well done.

Below is a listing of subsidiaries that support us with the expertise to accomplish all we do in our extensive range of industries.

3Phase Line's expertise lies in substations and switchyards, transmission services, distribution and telecommunications; all constructed while maintaining the strictest environmental and safety compliances. Their highly skilled professionals, advanced equipment, and unprecedented work ethic make them our partner in excellence for electrical contracting.

3P Utility Services is a union contractor focused on Gas Distribution work in the Mid-West. Our highly trained crews and state of the art equipment help to ensure that any project we build meets and exceeds the customers' expectations. We will help to solve complex problems that arise in the field by working closely with both the owner and home/landowners. Our Services include: Gas Main and Service Installation(s); Joint Trench; Directional Drilling; Vacuum Excavations; Meter Relocations; and Cast Iron Replacement Projects.

Big Country Energy Services LLC is an Oil & Gas Facility and Pipeline Construction Company providing comprehensive Construction and Project Management solutions utilizing advanced techniques, technologies and equipment with divisions in North Dakota, Wyoming and Montana. Big Country specializes in 2"-16" transmission and distribution pipeline construction for natural gas, crude oil and petrochemical products.

Bottom Line Services, LLC provides a range of top-notch oil & gas pipeline and plant construction, maintenance and operations services. We are well-equipped to serve your business needs, with fabrication shops, warehouses, shipping & receiving yards and administration offices across four Texas counties. At Bottom Line Services, LLC our goal is to provide our customers with quality work. Safety, accountability, fairness, and integrity are among our top priorities. We get the job done to your specifications, on time and within budget. Quality services goes hand in hand with cultivated valued relationships with our clients through trust worthy communication; whether it is by technology or face to face occurrences.

Through years of experience Cash Construction, Inc. provides a wide variety of construction services. From single family master planned communities, road & road rehabilitation construction, and a vast array of underground utility construction within the central Texas area. Cash has the discipline and expertise to complete their projects safely, on time, and with exceptional customer service.

EC Source (ECS) is a nationally recognized full-service EPC program management entity focused on financing and deploying Extra High Voltage (EHV) electrical systems in North America. ECS is staffed with recognized industry leaders in project planning and execution of large-scale electric transmission projects, including full service environmental planning, engineering, procurement, and construction activities.

Energy Erectors, Inc. specializes in all electric substation EPC and construction services up to 500 kV, from new turnkey projects to modifications of existing facilities throught the United States. Our broad range of expertise includes GIS, HVDV, Iso-phase bus installations, transmission spur lines, and VAR compensators. We provide these services to the electric power industry; and to industrial, heavy commercial, and water / wastewater industries.

MasTec Canada Inc. is a diversified infrastructure construction company that operates throughout Canada with a focus on the four western provinces of British Columbia, Alberta, Saskatchewan and Manitoba. MasTec Canada offers a broad scope of services and is managed by a Canadian team that has been working together for the past 12 years. Our services include pipeline construction ranging from 2"-36"; facility construction focusing on wellsites, gas plants, compressor and pump stations; heavy civil construction, earthworks and concrete; temporary and permanent buildings construction. Primarily serving the role of General Contractor, MasTec Canada Inc. has the equipment, experience, personnel and systems to execute complex energy and industrial construction programs safely and efficiently.

MasTec Canada Construction Inc. provides pilings, foundations systems and civil works to the energy and industrial construction sectors, with a solid track record of exceptional contract performance throughout Canada. Our diverse range of piling services includes drilled and driven piles, screw piles, caissons, earth retention and ground improvement.

As a worldwide-service provider, MasTec Network Solutions takes great pride in supplying, designing, and supporting technology solutions to the commercial and government verticals. Whether our customers need turnkey solutions, site modifications, maintenance, or even logistics management, MasTec Network Solutions maintains a high commitment to safety and ensures their ability to meet our customers' communication needs with the highest levels of reliability and quality.

Serving a diverse marketplace with a wide range of clients, including Utilities, IPP, Developers, Industrial Clients, Municipal Utilities and Electric Utility Cooperatives. MasTec Power Corp specializes in projects fueled by natural gas, oil, biomass, refuse, tire derived fuel, synthetic fuels, and other combustible fuels. MasTec Power Corp is staffed by key management personnel that possess greater than 30 – 35+ years each of experience in the power business. Our experience includes EPC experience as Contractors as well as Owners, and issupplemented by our experience in working with our Clients to assist in Project Development. Our power experience includes power trains for both utility and industrial facilities and includes Simple Cycle, Combined Cycle (Base Load,Peak Load), Reciprocating Engines, Combined Heat and Power Projects, Distributed Generation, Trash to Energy Facilities, C&D Waste Facilities, Biomass, etc. Through our broad experience base, MasTec Power Corp provides value to its clients from the conceptual phase of a project thru detail engineering, procurement, construction, Commissioning and Start-Up and ultimately O&M.

MasTec Transmission Services Canada, Ltd. is a self-performing EPC company focused on delivering electric power transmission projects, as well as undertaking large capital construction activities. From foundations to structure erections, conductor installations and OPGW, greenfield and brownfield substations or transmission lines, our team of world-class technical experts offers clients a full suite of safety-driven, seamlessly integrated services.

As the first pipeline contractor designed to work within today's stringent pipeline-construction parameters, Precision Pipeline is the next generation pipeline contractor. Their focus on safety, environmental sensitivity, and cost effectiveness, allows us to provide a greater sense of confidence and care to our customers' most unique demands.

With a solid work history and reliability, Pumpco, Inc. has the ongoing commitment and understanding of customer needs to work alongside MasTec for total job satisfaction. Their complete range of pipeline-construction services also include maintenance, repair, retirement, and removal services, which supplies MasTec with the capacity to offer our customers complete end-to-end solutions.

SEFNCO Communications is a best in class "single source" technology solution provider. Operating from multiple locations, we have the ability to provide single source engineering, construction, and management solutions that meet the growing needs of phone, broadband, cable and cellular companies throughout the Western United States. Our expertise has positioned us to support local, State, and Federal agencies, including military installations. It is the same fundamentals that founded the company that drive the company today.

Serving a diverse marketplace with a wide range of clients, Wanzek specializes in projects involving renewable energy, power and sugar-processing plants, heavy and civil construction, oil/gas/chemical operations, and industrial/food facilities. Wanzek maintains the resources, safety, and professional experience to assist MasTec in completing some of our most challenging projects, regardless of size or scope.