Quanta Services Investor Presentation — February 2022 - Quanta Services

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4Q and Full -Year 2021

Earnings Call Presentation

This presentation (and oralstatements regarding thesubject matter ofthispresentation) includes forward -looking statements intended to

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

statements include anystatements reflecting Quanta's expectations, intentions, strategies, assumptions, plans orbeliefs about future

events orperformance orthat donotsolely relate tohistorical orcurrent facts .Forward -looking statements involve certain risks,

uncertainties andassumptions thataredifficult topredict orbeyond Quanta's control, andactual results may differ materially from those

expected, implied orforecasted byourforward -looking statements duetoinaccurate assumptions andknown andunknown risks and

uncertainties .Foradditional information concerning some oftherisks, uncertainties, assumptions andother factors thatcould affect our

forward -looking statements, please refer toQuanta’s Annual Reports onForm 10-Kfortheyears ended December 31,2020 and

December 31,2021 (when filed), Quarterly Reports onForm 10-Qforthequarters ended March 31,2021 ,June 30,2021 andSeptember

30,2021 and other documents filed with the Securities and Exchange Commission, which are available onour website

(www .quantaservices .com), aswell astherisks, uncertainties and assumptions identified inthispresentation .Investors andanalysts

should notplace undue reliance onQuanta’s forward -looking statements, which arecurrent only asofthedate ofthispresentation .

Quanta does notundertake andexpressly disclaims anyobligation toupdate orrevise anyforward -looking statements toreflect events or

circumstances after thedate ofthispresentation orotherwise, andQuanta expressly disclaims anywritten ororalstatements made by

anythird party regarding thesubject matter ofthispresentation .

Certain information may beprovided inthispresentation thatincludes financial measurements thatarenotrequired by,orpresented in

accordance with, generally accepted accounting principles (GAAP) .These non-GAAP financial measures should notbeconsidered as

alternatives toGAAP financial measures, such asnetincome attributable tocommon stock andcash flowprovided byoperating activities,

andmay becalculated differently from, andtherefore may notbecomparable to,similarly titled measures used byother companies .Fora

reconciliation tothemost directly comparable GAAP financial measures, please refer totheaccompanying reconciliation tables .

The information contained inthisdocument has notbeen audited byany independent auditor .This presentation isprepared asa