HOUSTON, Oct. 30 /PRNewswire-FirstCall/ -- Quanta Services, Inc. (NYSE: PWR) announced today that it will release 2009 third quarter results on Wednesday, November 4, 2009, before the market opens. In conjunction with the release, Quanta has scheduled a conference call which will be broadcast live over the Internet on Wednesday, November 4, 2009, at 9:30 a.m. Eastern time. What: Quanta Services 2009 Third Quarter Earnings Conference Call When: Wednesday, November 4, 2009 - 9:30 a.m. Eastern time How: Live via phone - By dialing (480) 629-9644 and asking for the Quanta Services call at least 10 minutes prior to the start time. Live over the Internet - by logging on to the Web at the following address: http://quantaservices.com/ For those who cannot listen to the live call, a telephonic replay will be available through November 11, 2009, and may be accessed by calling (303) 590-3030 and using the pass code 4178458#. Also, an archive of the webcast will be available shortly after the call on the company's Web site at http://www.quantaservices.com/ . For more information, please contact Karen Roan at DRG&E at 713-529-6600 or email . 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 dark fiber construction 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 Kip Rupp / Reba Reid Ken Dennard / Quanta Services, Inc. DRG&E 713-629-7600 713-529-6600 DATASOURCE: Quanta Services, Inc. CONTACT: James Haddox, CFO, or Reba Reid, both of Quanta Services, Inc., +1-713-629-7600; or Kip Rupp, , or Ken Dennard, , both of DRG&E, +1-713-529-6600, for Quanta Services, Inc. Web Site: http://www.quantaservices.com/

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