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Quanta provides fourth quarter and year end 2009 financial statements in XBRL format.
 
Quanta Services Reports 2009 Fourth Quarter and Annual Results
  EBITDA Calculation 4Q09
  Webcast: Monday, Feb. 22, 2010 – 9:30 ET – 2009 Fourth Quarter & Full Year Conference Call
  Quanta Services to Present at the Fifth Annual Piper Jaffray Clean Technology & Renewables Conference
  Quanta Services Announces Fourth Quarter & Full Year 2009 Earnings Release and Conference Call Schedule
  Webcast: Dec. 1, 2009 – 1:35 p.m. ET -- Executive Presentation at 2009 FBR Capital Markets Fall Investor Conference
  Quanta Services to Present at Investor Conferences
  Webcast: Nov. 18, 2009 – 3:00p.m. ET -- Executive Presentation at Stephens, Inc. Fall Investment Conference
  Quanta Services Reports 2009 Third Quarter Results
  Reconciliations of Other GAAP to non-GAAP Measures
  Webcast: Wednesday, November 4, 2009 – 9:30 ET – Third Quarter Earnings Conference Call
Quanta Services Announces Third Quarter Earnings Release and Conference Call Schedule
  Quanta Services Acquires Price Gregory Services, Incorporated
  Webcast: Sept. 17 at 2:30 pm PT - Executive Presentation at D.A. Davidson Engineering & Construction Conference
  Webcast: Sept. 15 at 9:00 am ET – Executive Presentation at J.P. Morgan Diversified Industries Conference
  Quanta Services to Present at the J.P. Morgan Diversified Industries Conference and the D.A. Davidson Engineering & Construction Products Conference
  Webcast: Thursday, September 03, 2009 - 9:00 am ET – Quanta Services To Acquire Price Gregory
  Quanta Services To Acquire Price Gregory
  Webcast: Wednesday, August 5, 2009 – 9:30 ET – Second Quarter Earnings Conference Call
  Presentation: Quanta to Acquire Price Gregory
  Quanta Services Announces Second Quarter 2009 Earnings Release and Conference Call Schedule
  Webcast: June 4 at 1:55 pm ET - Executive Presentation at Credit Suisse 2009 Engineering & Construction Services Conference
  Quanta Services Reports 2009 First Quarter Results
  Webcast: Wed., May 6, 2009 – 9:30 ET – First Quarter 2009 Earnings Conference
  Quanta Announces First Quarter Earnings Release and Conference Call Schedule
  2008 Annual Report
Proxy Statement for 2009 Annual Meeting of Stockholders
Peter Lorenz to Lead Quanta’s Renewable Energy Services
Officers of Quanta Services to Report the Withholding of Shares
Quanta Services Reports 2008 Fourth Quarter and Annual Results
Reconciliations of Other GAAP to non-GAAP Measures
Quanta Services and Northeast Utilities Expand Contract
Webcast: Tuesday, February 24, 2008 – 9:30 ET – 2008 Fourth Quarter & Full Year Conference Call
Quanta Services Announces 2008 Fourth Quarter & Full Year Earnings Release and Conference Call Schedule
National Grid Selects Quanta Services for Transmission Infrastructure Services
Webcast: Dec. 4 at 10:15 am ET – Executive Presentation at JP Morgan SMid Cap Conference
Webcast: Dec. 2 at 10:45 am ET - Executive Presentation at FBR Capital Markets Fall Investor Conference
Quanta Services to Present at Investor Conferences
Quanta Services Reports 2008 Third Quarter Results
  Reconciliations of Other GAAP to non-GAAP Measures
  Webcast: Wednesday, November 5, 2008 – 9:30 ET – Third Quarter Earnings Conference Call
  Quanta Services Announces 2008 Third Quarter Earnings Release and Conference Call Schedule
  Quanta Services Names James F. O’Neil President and COO
  Quanta Services Announces Second Quarter Results
  Reconciliation of Non-GAAP Financial Measures
  Webcast: Wednesday, August 6, 2008 – 9:30 ET – Second Quarter Earnings Conference Call
  Quanta Services to Present at Investor Conferences
  Webcast: June 3, 2008 – 10:00 am ET – JPMorgan Basics and Industrials Conference
  Webcast: June 5, 2008 - 1:55 ET - Credit Suisse Engineering & Environmental Services Conference
  Quanta Services Reports First Quarter Results
  Reconciliations of Other GAAP to non-GAAP Measures
  Webcast: Wednesday, May 7, 2008 – 9:30 a.m. ET – First Quarter Earnings Conference Call
  Quanta Services Announces 2008 First Quarter Earnings Release And Conference Call Schedule
  2007 Annual Report
  Proxy Statement for Annual Meeting of Stockholders
  Webcast: March 17, 2008 – 2:25 PDT – CitiGroup Small and MidCap Conference
  Quanta Services to Present at The CitiGroup Small & Mid-Cap Conference
  Officers of Quanta Services to Report the Withholding of Shares
  LCRA Selects Quanta Services for Transmission System Expansion
  Webcast: Feb. 27, 2008 3:15 pm ET – Baird 2008 Business Solutions Conference
  Quanta Services to Present at the Robert W. Baird 2008 Business Solutions Conference
  Quanta Services Reports Fourth Quarter and Annual Results
  Reconciliation of EBITA and Adjusted EBITDA
  Webcast: Thursday, February 21, 2008 – 9:30 am ET – Fourth Quarter and Year End Earnings Conference Call
  Quanta Services Announces 2007 Fourth Quarter and Year End Earnings Release and Conference Call Schedule
  Quanta Services and Northeast Utilities Finalize $750 Million Contract
  Webcast: Tuesday, November 27, 9:15am ET -- FBR Capital Markets Investor Conference
  Quanta Services to Present at FBR Capital Markets Investor Conference