Quanta Services Investor Presentation — August 2017

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Investor Presentation

August / September, 2017

NYSE: PWRForward Looking Statement Disclaimer

This presentation (and oral statements regarding thesubject matter ofthis presentation) includes forward -looking statements intended toqualify

under the“safe harbor” from liability established bythePrivate Securities Litigation Reform Actof1995. These forward -looking statements include

any statements reflecting Quanta's expectations, intentions, strategies, assumptions orbeliefs about future events orperformance orthat donot

solely relate tohistorical orcurrent facts .Forward -looking statements involve certain risks, uncertainties and assumptions that are difficult to

predict orbeyond Quanta's control, and actual results may differ materially from those expected, implied orforecasted byour forward -looking

statements due toinaccurate assumptions and known and unknown risk and uncertainties .Foradditional information concerning some ofthe

risks, uncertainties and assumptions that could affect ourforward -looking statements, please refer toQuanta’s Annual Report onForm 10-Kforthe

year ended December 31,2016 and itsother documents filed with theSecurities and Exchange Commission, aswell astherisks, uncertainties and

assumptions identified inthis presentation .Investors and analysts should notplace undue reliance onQuanta’s forward -looking statements, which

arecurrent only asofthedate ofthis presentation .Quanta does not undertake and expressly disclaims any obligation toupdate orrevise any

forward -looking statements toreflect events orcircumstances after thedate ofthis presentation orotherwise, and Quanta expressly disclaims any

written ororal statements made byanythird party regarding thesubject matter ofthis presentation .Key Takeaways

Quanta continues to see opportunities to increase shareholder value

through growth in revenues and EPS over a multi -year period

Quanta is the leading integrated infrastructure solutions provider in

the markets we serve, with unmatched scope and scale

We will maintain a strong financial profile to support our strategic initiatives for near- and long- term, profitable growthThere is opportunity for a renewed multi -year growth cycle

Quanta’s corporate actions demonstrate confidence in our long -term

growth prospects and a commitment to generating shareholder valueLeading Integrated Infrastructure Solutions Provider

Quanta Services Is A Leading Integrated Infrastructure Solutions ProviderWho is Quanta Services?Committed to the health and safety of our employees, customers

Recognized market leader in electric power and oil and gas pipeline construction in North America