Quanta Services to Present at Investor Conferences

HOUSTON, May 29 /PRNewswire-FirstCall/ -- Quanta Services, Inc. (NYSE: PWR) today announced that company executives will present at the following investor conferences in early June:

    -- The RBC Capital Markets Energy Conference, June 2-3, 2008: At the Ritz
       Carlton Hotel, Battery Park in New York City on June 2nd at 10:15 a.m.
       Eastern Time;
    -- The 3rd Annual JPMorgan Basics & Industrials Conference, June 3-4,
       2008: At the Sheraton New York Hotel and Towers in New York City on
       June 3rd at 10:00 a.m. Eastern Time; and
    -- The Credit Suisse Engineering & Environmental Services Conference, June
       5, 2008: At the Credit Suisse office on Madison Avenue in New York City
       on June 5th at 1:55 p.m. Eastern Time.

Quanta Services' presentations at the JPMorgan and Credit Suisse conferences will be webcast live on their respective dates and times. To listen to the live audio webcast and view Quanta's presentation material, visit the company's website at http://www.quantaservices.com. A replay of the presentation will be archived on the website shortly after the presentation is concluded.

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 engineering, designing, installing, repairing and maintaining network infrastructure nationwide. With operations in all 50 states and Canada, 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 / 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 29, 2008