PRESS RELEASE

FOR IMMEDIATE RELEASE

04-06

QUANTA SERVICES REPORTS FIRST QUARTER RESULTS

HOUSTON — May 5, 2004 — Quanta Services, Inc. (NYSE:PWR) today announced results for the three months ended March 31, 2004.

     Revenues in the first quarter of 2004 were $355.0 million compared to revenues of $367.1 million in the first quarter of 2003. For the first quarter of 2004, the net loss attributable to common stock was $11.7 million, or a loss of $0.10 per share compared to a net loss attributable to common stock of $2.7 million, or a loss of $0.03 per share, in the first quarter of 2003.

     “We were disappointed in our earnings for the first quarter which, due to seasonality, is our most unpredictable quarter. However, revenues were solidly within our February 26th guidance range of $340 million to $360 million, cash flow continues to be positive and margins improved in both February and March,” said John Colson, chairman and chief executive officer of Quanta Services. “We remain optimistic about the future of our business and will maintain our focus on improving margins and strategically positioning the company for immediate and future opportunities.”

     The company also announced that Luke Spalj, President of the Telecommunications and Cable Television Division will be leaving the company to pursue other opportunities. “We wish Luke the best in his new endeavors,” Colson stated. “The organization of this division will change only slightly, with a new president to be announced in the near future.”

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OUTLOOK

     The following statements are based on current expectations. These statements are forward-looking, and actual results may differ materially. These statements do not include the potential impact of any business combinations or divestitures that may be completed after March 31, 2004.

     Quanta expects revenues for the second quarter of 2004 to range from $380 million to $410 million and diluted earnings per share to be between $0.02 and $0.05. Recent spikes in aluminum, copper, steel and other commodity prices, among other things, could affect Quanta’s customers’ capital spending decisions in the short term. Quanta will update full year guidance after the second quarter bidding season has been completed and visibility has improved.

     Quanta Services has scheduled a conference call for May 5, 2004, at 9:30 a.m. eastern time. To participate in the call, dial (303) 262-2193 at least 10 minutes before the conference call begins and ask for the Quanta Services conference call. Investors, analysts and the general public also will have the opportunity to listen to the conference call over the Internet by visiting the company’s web site at www.quantaservices.com. To listen to the call live on the web, please visit the Quanta Services web site at least fifteen minutes early to register, download and install any necessary audio software. For those who cannot listen to the live web cast, an archive will be available shortly after the call on the company’s website. A replay will also be available and may be accessed by calling (303) 590-3000 and using the pass code 578941. For more information, please contact Karen Roan at DRG&E by calling (713) 529-6600.

     Quanta Services, Inc. is a leading provider of specialized contracting services, delivering end-to-end network solutions for the electric power, gas, telecommunications and cable television industries. The company’s comprehensive services include designing, installing, repairing and maintaining network infrastructure nationwide.

This press release contains various forward-looking statements and information, including management’s expectations of revenues, earnings per share and growth in certain markets that are based on management’s belief as well as assumptions made by and information currently available to management. Although the company believes that the expectations reflected in such forward-looking statements are reasonable, it can give no assurance that such expectations will prove to have been correct. Such statements are subject to certain risks, uncertainties and assumptions including, among other matters, future growth in the electric utility and telecommunications outsourcing industry, and the ability of Quanta to successfully implement cost saving measures and to effectively integrate the operations of existing and acquired companies, as well as general risks related to the industries in which Quanta operates. Should one or more of these risks materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those expected. For a discussion of the risks, investors are urged to refer to the Company’s reports filed under the Securities Exchange Act of 1934.

- Tables to follow -

		Quanta Services, Inc. and Subsidiaries Condensed Consolidated Balance Sheets (In thousands) (Unaudited)

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