Quanta Services, Inc. provides specialty contracting services, offering infrastructure solutions to the electric power, natural gas and oil pipeline industries. It is engaged in the design, installation upgrade, repair and maintenance of infrastructure within each of the industries it serves, such as electric power transmission and distribution networks, substation facilities, renewable energy facilities and pipeline transmission, gathering and distribution systems and facilities.

The company operates business through three segments: Electric Power Infrastructure Services, Oil and Gas Infrastructure Services and Fiber Optic Licensing and Other. The Electric Power Infrastructure Services provides comprehensive network solutions to customers in the electric power industry. The Oil and Gas Infrastructure Services segment provides comprehensive infrastructure solutions to customers involved in the development and transportation of natural gas, oil and other pipeline products.

The Fiber Optic Licensing and Other segment designs, procures constructs and maintain and owns fiber optic telecommunications infrastructure in select markets. Quanta Services was founded by Kevin D. Miller, Steven P. Colmar, William G. Parkhouse and John R. Colson on August 19, 1997 and is headquartered in Houston, TX.