Quanta Services Subsidiary Honored by AT&T as Outstanding Supplier

Commitment to excellence over the past year has earned Quanta Services, Inc.'s (NYSE: PWR) operating unit, Trawick Construction Company, recognition as an outstanding supplier to AT&T Inc. (NYSE: T), one of the world's leading data, voice, wireless and Internet services providers.

"We are proud of our long-standing tradition of providing unparalleled products and services to our business and residential customers," said Maureen Merkle, President, AT&T Procurement. "We're successful on that front in large part thanks to supplier partners like Trawick Construction Company that consistently go above and beyond the call of duty."

Trawick Construction Company received one of 39 supplier recognition awards for its work in helping AT&T deliver outstanding service to its customers during the past year. Trawick Construction Company was recognized for its contributions in the Teamwork category.

"Trawick Construction and all of our operating units are committed to teaming with our customers and working diligently to deliver superior service with a focus on safety and efficiency," said John R. Colson, chairman and CEO of Quanta Services. "We are proud of their performance and honored to receive this major award from a valued customer."

As part of its annual supplier recognition program, AT&T took out a half- page ad in the June 5, 2007, edition of The Wall Street Journal to publicly thank the selected companies.

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.