Quanta Services is a U.S. corporation that provides engineering, procurement and construction services for electric power infrastructure and oil and gas infrastructure industries, telecommunications and formerly broadband cable. Capabilities include the planning, design, installation, maintenance and repair of most types of network infrastructure. In June 2009, Quanta Services was added to the S&P 500 index, replacing Ingersoll-Rand.Quanta Services employs about 26,000 people, approximately 2,300 of which are salaried. Its operating companies achieved combined revenues of about $7.57 billion in 2015. It is headquartered in Houston, Texas. In 1998 Quanta went public on the New York Stock Exchange under the ticker symbol, PWR.