MasTec, Inc. is an infrastructure construction company, providing engineering, building, installation, maintenance, and upgrade services for communication, energy, utilities, and other infrastructure, mostly in the United States and Canada. It operates through various segments including Communications, Clean Energy and Infrastructure, Oil and Gas, and Power Delivery, and builds a wide range of infrastructure, including power generation facilities, water pipelines, and home automation and energy management solutions. Its clients are public and private energy providers, pipeline operators, and government entities.