Quanta Services Announces 2008 First Quarter Earnings Release and Conference Call Schedule

HOUSTON, April 28 /PRNewswire-FirstCall/ -- Quanta Services, Inc. announced today that it will release 2008 first quarter results on Wednesday, May 7, 2008, 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, May 7, 2008, at 9:30 a.m. eastern time.

What: Quanta Services 2008 First Quarter Earnings Conference Call When: Wednesday, May 7, 2008 - 9:30 a.m. eastern time How: Live via phone -- By dialing [phone] 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 address below. Where: http://www.quantaservices.com/

For those who cannot listen to the live call, a telephonic replay will be available through May 21, 2008, and may be accessed by calling [phone] and using the pass code 11113666. Also, an archive of the webcast will be available shortly after the call on the company's website at http://www.quantaservices.com/. For more information, please contact Karen Roan at DRG&E at 713-529-6600 or email [e-mail].

Contacts: James Haddox, CFO Ken Dennard / [e-mail] Reid Kip Rupp / [e-mail] Services, Inc. DRG&E 713-629-7600 713-529-6600