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

HOUSTON, April 28 /PRNewswire-FirstCall/ -- Quanta Services, Inc. (NYSE: PWR) 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 (303) 262-2191 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 (303) 590-3000 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 kcroan@drg-e.com.

     Contacts:  James Haddox, CFO        Ken Dennard / ksdennard@drg-e.com
                Reba Reid                Kip Rupp / krupp@drg-e.com
                Quanta Services, Inc.    DRG&E
                713-629-7600             713-529-6600

SOURCE Quanta Services, Inc.

Released May 6, 2008