Quanta Services to Present at the J.P. Morgan Diversified Industries Conference and the D.A. Davidson Engineering & Construction

HOUSTON, Sept. 11  /PRNewswire-FirstCall/ -- Quanta Services, Inc. (NYSE: PWR) today announced that the company will present at the 4th Annual J.P. Morgan Diversified Industries Conference to be held on Sept. 15 - 16, 2009 at the J.P. Morgan Conference Center in New York City. John R. Colson, chairman and chief executive officer, and James H. Haddox, chief financial officer, will present on Tuesday, Sept. 15, 2009 starting at 9:00 a.m. Eastern Time.

The company also announced that it will participate in the 8th Annual D.A. Davidson Engineering & Construction, Construction Products Conference to be held on Sept. 16 - 18, 2009 at the Omni San Francisco Hotel in San Francisco. Mr. Colson and Mr. Haddox will present on Thursday, Sept. 17, 2009 starting at 2:30 p.m. Pacific Time.

Quanta's presentation for both events will be broadcast live over the Internet. Live webcast links will be available on the company's Web site at http://www.quantaservices.com/ and will also be archived for replay on the Web site.

Quanta Services is a leading specialized contracting services company, delivering infrastructure network solutions for the electric power, natural gas, telecommunications and cable television industries. The company's comprehensive services include designing, installing, repairing and maintaining network infrastructure nationwide. Additionally, Quanta provides point-to-point fiber optic telecommunications infrastructure and leasing in select markets and offers related design, procurement, construction and maintenance services. With operations throughout North America, Quanta has the manpower, resources and expertise to complete projects that are local, regional, national or international in scope.

  Contacts:   James Haddox, CFO         Ken Dennard / 
              Reba Reid                 713-529-6600
              Quanta Services, Inc.     Kip Rupp / 
              713-629-7600              404-872-6764
                                        DRG&E


DATASOURCE: Quanta Services, Inc.



CONTACT:  James Haddox, CFO, or Reba Reid, both of Quanta Services, Inc.,

[phone]; or Ken Dennard, , [phone], or Kip

Rupp, , [phone], both of DRG&E, for Quanta Services,

Inc.



Web Site:  http://www.quantaservices.com/ 

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