LCRA Selects Quanta Services for Transmission System Expansion

Contract provides workforce for new construction, maintenance of transmission system

HOUSTON, Feb. 26 /PRNewswire-FirstCall/ -- Quanta Services, Inc. (NYSE: PWR) today announced that it has secured a contract with the Lower Colorado River Authority (LCRA) at an estimated value of up to $194 million over five years. Under the contract, Irby Construction, a Quanta subsidiary, will provide transmission line construction, including right-of-way preparation, environmental controls, structural foundations, structure installation, conductor stringing and energizing of new transmission lines as well as the reconstruction of existing transmission lines.

"LCRA has shown vision and forethought in planning for the future of its transmission infrastructure, as well as executing quickly to avoid potential congestion on the grid," said John R. Colson, chairman and chief executive officer, Quanta Services. "Through this arrangement with Quanta, LCRA has secured access to a trained, experienced workforce to maintain and upgrade its power delivery system for the next five years."

The work Quanta will perform under the contract will contribute to LCRA's approved plans to expand transmission infrastructure through several new and upgraded transmission line projects. Quanta has performed various infrastructure services for LCRA over the past three years, including a variety of transmission projects throughout the Central Texas area in 2006.

"These projects are needed to improve the reliability of the state's electric transmission system and address regional electric system concerns," said Ross Phillips, executive manager of LCRA Transmission Services. "Load growth, new power plants and the region's growing population continue to increase the need to bring electric power to Central Texas and the Energy Reliability Council of Texas grid."

About LCRA

The Lower Colorado River Authority provides energy, water and community services to the people of Texas. Created by the State of Texas, LCRA manages the lower portion of the Texas Colorado River, provides electric generation and transmission services, operates parks, and helps communities with economic development.

About Quanta Services

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.

This press release (and any oral statements regarding the subject matter of this press release) contains forward-looking statements intended to qualify for the "safe harbor" from liability established by the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, but are not limited to: the expected value of the agreement with LCRA and the scope, services, term and results of any related projects awarded under the agreement, as well as statements reflecting expectations, intentions, assumptions or beliefs about future events and other statements that do not relate strictly to historical or current facts. Although Quanta's management believes that the expectations reflected in such forward-looking statements are reasonable, it can give no assurance that such expectations will prove to be correct. These statements can be affected by inaccurate assumptions and by a variety of risks and uncertainties that are difficult to predict or beyond our control, including, among others, successful performance and completion of the agreement and the projects awarded thereunder; failure to realize the anticipated value of the agreement; adverse changes in economic conditions and trends in relevant markets; future growth in the electric utility industry; delays or changes in scope of projects awarded under the agreement; the inability of customers to pay for services; cancellation and termination provisions present in the agreement; and other factors affecting the business of the respective parties generally, including risks detailed in Quanta's Annual Report on Form 10-K for the year ended December 31, 2006, Quanta's Quarterly Reports on Form 10-Q for the quarters ended March 31, 2007, June 30, 2007 and September 30, 2007 and any other documents of Quanta filed with the Securities and Exchange Commission (SEC). Should one or more of these risks materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those expressed or implied in any forward-looking statements. You are cautioned not to place undue reliance on these forward- looking statements, which are current only as of this date. Quanta does not undertake and expressly disclaims any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. Quanta further expressly disclaims any written or oral statements made regarding the subject matter of this press release by any third party. For a discussion of these risks, uncertainties and assumptions, investors are urged to refer to Quanta's documents filed with the SEC that are available through the company's web site at http://www.quantaservices.com or through the SEC's Electronic Data Gathering and Analysis Retrieval System (EDGAR) at http://www.sec.gov.

     Contacts:  James Haddox, CFO           Krista Umscheid, Spokeswoman
                Reba Reid                   LCRA
                Quanta Services, Inc.       (512) 473-3365
                713-629-7600

SOURCE Quanta Services, Inc.

Released February 26, 2008