Quanta Services is a U.S. corporation that provides infrastructure services for the electric power, pipeline, industrial and communications industries. Its capabilities include planning, design, installation, program management, maintenance and repair of most types of network infrastructure. The company has grown organically since its founding, but it has also acquired over 150 companies in the electrical contracting industry. It has provided its services and expertise to many major electrical transmission construction projects, Quanta Services employs about 40,000. Measured as part of the S&P 500, its operating companies achieved combined revenues of about $29.9 billion in 2025. It is headquartered in Houston, Texas. In 1998, Quanta went public on the New York Stock Exchange under the ticker symbol PWR. Wikipedia