UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON,Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a)

of the

Securities Exchange Act of 1934

Filed by the Registrant  x

Filed by a Party other than the Registrant  ¨

Check the appropriate box:

QUANTA SERVICES, INC.

(Name of Registrant as Specified in itsIn Its Charter)

Payment of Filing Fee (Check the appropriate box):

QUANTA SERVICES, INC.

2800 Post Oak Boulevard, Suite 2600

Houston, TX 77056

(713) 629-7600

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD MAY 22, 201421, 2015

To our Stockholders:

The Annual Meeting of Stockholders of Quanta Services, Inc. (“Quanta”) will be held in the Williams Tower, 2^nd Floor Conference Center, Auditorium No. 1, located at 2800 Post Oak Boulevard, Houston, Texas 77056, on May 22, 201421, 2015 at 9:00 a.m. local time. At the meeting, you will be asked to consider and act upon the following matters, which are more fully described in the accompanying Proxy Statement:

1.            Election of ten directors nominated by our Board of Directors;

2.            Ratification of the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for fiscal year 2014;

3.            Approving, by non-binding advisory vote, Quanta’s executive compensation; and

4.            

Our stockholders of record at the close of business on March 24, 201423, 2015 are entitled to notice of, and to vote at, the annual meeting and any adjournments or postponements of the meeting.

By Order of the Board of Directors,

Carolyn M. Campbell

Corporate Secretary

Houston, Texas

April 10, 20149, 2015

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR

THE ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON MAY 22, 2014:21, 2015:

The Notice, Proxy Statement and

20132014 Annual Report to Stockholders

are available atwww.proxyvote.com.

TABLE OF CONTENTS

QUANTA SERVICES, INC.

2800 Post Oak Boulevard, Suite 2600

Houston, TX 77056

(713) 629-7600

PROXY STATEMENT

FOR THE ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD MAY 22, 201421, 2015

We are distributing and making available this Proxy Statement, the form of proxy

or voting instructions and our 20132014 Annual Report beginning on or about April 10, 2014.9, 2015.

We are furnishing this proxy statement in connection with the solicitation of proxies by our Board of Directors (“Board”) to be voted at the 20142015 Annual Meeting of Stockholders of Quanta Services, Inc., a Delaware corporation, sometimes referred to as the Company, Quanta, us, we or like terms. The annual meeting will be held in Houston, Texas on Thursday, May 22, 2014,21, 2015, at 9:00 a.m. local time. The proxy materials, including this proxy statement, the form of proxy or voting instructions and our 20132014 annual report, are being distributed and made available on or about April 10, 2014.9, 2015.

In accordance with rules and regulations adopted by the U.S. Securities and Exchange Commission (“SEC”), we are providing our stockholders access to our proxy materials on the Internet. Accordingly, a Notice of Internet Availability of Proxy Materials (“Notice”) will be mailed to most of our stockholders on or about April 10, 2014.9, 2015. Stockholders will have the ability to access the proxy materials on a website referred to in the Notice or request a printed set of the proxy materials to be sent to them by following the instructions in the Notice.

The Notice also provides instructions on how to inform us to send future proxy materials to you electronically by e-mail or in printed form by mail. If you choose to receive future proxy materials by e-mail, you will receive an e-mail next year with instructions containing a link to those materials and a link to the proxy voting site. Your election to receive proxy materials by e-mail or printed form will remain in effect until you terminate it.

Choosing to receive future proxy materials by e-mail will allow us to provide you with the information you need in a timelier manner, save us the cost of printing and mailing documents to you, and conserve natural resources.

QUESTIONS AND ANSWERS ABOUT THE MEETING

What is the purpose of the meeting?

The meeting will be Quanta’s regular annual meeting of stockholders, and stockholders will be asked to vote on the following matters:

How does the Board recommend that stockholders vote?

The Board recommends that stockholders vote as follows:

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When and where is the annual meeting?

The annual meeting will be held in the Williams Tower, 2^nd Floor Conference Center, Auditorium No. 1, located at 2800 Post Oak Boulevard, Houston, Texas 77056, on May 22, 201421, 2015 at 9:00 a.m. local time.

Who can attend the meeting?

All stockholders of record as of March 24, 2014,23, 2015, or their duly appointed proxies, may attend the meeting, and each may be accompanied by one guest. Seating, however, is limited. Admission to the meeting will be on a first-come, first-served basis. Registration and seating will begin at 8:30 a.m. on May 21, 2015. Each stockholder will be asked to present valid picture identification, such as a driver’s license or passport. Cameras, recording devices and other electronic devices will not be permitted at the meeting. To obtain directions to the meeting, please contact our Corporate Secretary at713-629-7600.

If you hold your shares in “street name” (that is, through a broker, bank or other nominee), you will need to bring a copy of a brokerage statement reflecting your stock ownership as of the record date and check in at the registration desk at the meeting.

Who is entitled to vote at the meeting?

Holders of record of (A)(i) our Common Stock, par value $0.00001 per share, (B)(ii) our Series F Preferred Stock, par value $0.00001 per share, and (C)(iii) our Series G Preferred Stock, par value $0.00001 per share, respectively, at the close of business on March 24, 2014,23, 2015, the record date for the meeting, are entitled to notice of and to vote at the annual meeting. If you were a stockholder of record on that date, you will be entitled to vote all of the shares that you held on that date at the meeting, or at any adjournments or postponements of the meeting, unless a new record date is then set.

As of March 24, 2014,23, 2015, there were 213,426,795204,430,017 shares of our Common Stock, one share of our Series F Preferred Stock, and one share of our Series G Preferred Stock, respectively, outstanding and entitled to vote.

What are the voting rights of the holders of Common Stock, Series F Preferred Stock and Series G Preferred Stock?

Each share of Common Stock is entitled to one vote on each matter on which it may vote. The share of Series F Preferred Stock is entitled to a number of votes equal to the number of outstanding Class A non-voting exchangeable common shares of our wholly-owned subsidiary, Valard Construction Ltd., a British Columbia corporation, on each matter on which it may vote. Valard Construction Ltd. had 3,500,000 Class A non-voting exchangeable common shares outstanding on March 24, 2014.23, 2015. The share of Series G Preferred Stock is entitled to a number of votes equal to the number of outstanding Class A non-voting exchangeable common shares of our wholly-owned subsidiary, Northstar Energy Services Inc., an Alberta corporation, on each matter on which it may vote. Northstar Energy Services Inc. had 899,858 Class A non-voting exchangeable common shares outstanding on March 24, 2014.23, 2015.

Holders of Common Stock, Series F Preferred Stock and Series G Preferred Stock vote together as a single class on all matters. The required vote to approve each item to be voted on at the meeting is described below.

What vote is required to approve each item to be voted on at the meeting?

Directors are elected by a majority of the votes cast with respect to such director in uncontested elections, such that a nominee for director will be elected to the Board if the votes cast FOR the nominee’s election exceed the votes cast AGAINST such nominee’s election. Abstentions and broker non-votes are not counted as votes cast for purposes

General Information

cast for purposes of the election of directors and, therefore, will have no effect on the outcome of such election. Even if a nominee is not re-elected, he or she will remain in office as a director until his or her earlier resignation or removal. Each of the current director nominees has signed a letter of resignation that will be effective if the nominee is not re-elected at the meeting and the Board accepts his or resignation following the meeting. If a nominee is not re-elected, the Board will decide whether to accept the director’s resignation in accordance with the procedures listed in Quanta’s Corporate Governance Guidelines, which are available on our website atwww.quantaservices.com.

Ratification of the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm requires the affirmative vote of a majority of the voting power of the shares of Common Stock, Series F Preferred Stock and Series G Preferred Stock, considered together as a single class, present at the meeting in person or by proxy and entitled to vote on that proposal. Abstentions will have the same effect as a vote against the proposal. Broker non-votes will have no effect on the outcome of the vote on such proposal.

Advisory approval of the resolution on Quanta’s executive compensation requires the affirmative vote of a majority of the voting power of the shares of Common Stock, Series F Preferred Stock and Series G Preferred Stock, considered together as a single class, present at the meeting in person or by proxy and entitled to vote on that proposal. Abstentions will have the same effect as a vote against the resolution. Broker non-votes will have no effect on the outcome of the advisory vote. The results of this vote are not binding on the Board, whether or not the proposal is adopted by the aforementioned voting standard. In evaluating the vote on this resolution, the Board intends to consider the voting results in their entirety.

Any other matter properly brought before the meeting will be decided by the affirmative vote of a majority of the voting power of the shares of Common Stock, Series F Preferred Stock and Series G Preferred Stock, considered together as a single class, present at the meeting in person or by proxy and entitled to vote on the matter.

Why did I receive a Notice in the mail regarding the Internet availability of proxy materials this year instead of a full set of proxy materials?

In accordance with SEC rules, we are providing access to our proxy materials over the Internet. As a result, we have sent to most of our stockholders a Notice instead of a paper copy of the proxy materials. The Notice contains instructions on how to access the proxy materials over the Internet and how to request a paper copy. In addition, stockholders may request to receive future proxy materials in printed form by mail or electronically by e-mail. A stockholder’s election to receive proxy materials by mail or e-mail will remain in effect until the stockholder terminates it.

Why didn’t I receive a Notice in the mail regarding the Internet availability of proxy materials?

We are providing certain stockholders, including those who have previously requested to receive paper copies of the proxy materials, with paper copies of the proxy materials instead of a Notice. If you would like to reduce the costs incurred by Quanta in mailing proxy materials, you can consent to receive all future proxy statements, proxy cards and annual reports electronically via e-mail or the Internet. To sign up for electronic delivery, please follow the instructions provided with your proxy materials and on your proxy card or voting instruction card to vote using the Internet. When prompted, indicate that you agree to receive or access stockholder communications electronically in the future.

Can I vote my stock by completing and returning the Notice?

No. The Notice will, however, provide instructions on how to vote by Internet, by telephone, by requesting and returning a paper proxy card, or by submitting a ballot in person at the annual meeting.

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How can I access the proxy materials over the Internet?

Your Notice or proxy card will contain instructions on how to view our proxy materials for the annual meeting on the Internet. Our proxy materials are available atwww.proxyvote.com.

General Information

How do I vote?

You may vote by any of the following methods:

(i) Internet. Vote on the Internet atwww.proxyvote.com. This website also allows electronic proxy voting using smartphones, tablets and other web-connected mobile devices (additional charges may apply pursuant to your service provider plan). Simply follow the instructions on the Notice, or if you received a proxy card by mail, follow the instructions on the proxy card and you can confirm that your vote has been properly recorded. If you vote on the Internet, you can request electronic delivery of future proxy materials. Internet voting facilities for stockholders of record will be available 24 hours a day and will close at 11:59 p.m. (Eastern Time) on May 21, 2014.20, 2015.

(ii) Telephone. Vote by telephone by following the instructions on the Notice or, if you received a proxy card, by following the instructions on the proxy card. Easy-to-follow voice prompts allow you to vote your stock and confirm that your vote has been properly recorded. Telephone voting facilities for stockholders of record will be available 24 hours a day and will close at 11:59 p.m. (Eastern Time) on May 21, 2014.20, 2015.

(iii) Mail. If you received a proxy card by mail, vote by mail by completing, signing, dating and returning your proxy card in the pre-addressed, postage-paid envelope provided. If you vote by mail and your proxy card is returned unsigned, then your vote cannot be counted. If you vote by mail and the returned proxy card is signed without indicating how you want to vote, then your proxy will be voted as recommended by the Board. If mailed, your completed and signed proxy card must be received by May 21, 2014.20, 2015.

(iv) Meeting. You may attend and vote at the annual meeting. The Board recommends that you vote using one of the first three methods discussed above, as it is not practical for most stockholders to attend and vote at the annual meeting. Using one of the first three methods discussed above to vote will not limit your right to vote at the annual meeting if you later decide to attend in person. If your stock is held in street name (for example, held in the name of a bank, broker, or other nominee), you must obtain a proxy executed in your favor from your bank, broker or other holder of record to be able to vote in person at the annual meeting.

If I vote by telephone or Internet and received a proxy card in the mail, do I need to return my proxy card?

No, you do not need to return your proxy card if you vote by telephone or Internet.

If I vote by mail, telephone or Internet, may I still attend the annual meeting?

Yes, you may attend the annual meeting even if you have voted by mail, telephone or Internet.

Can I change my vote?

Yes. You may revoke your proxy before the voting polls are closed at the annual meeting, by the following methods:

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The powers of the proxy holders will be revoked with respect to your shares if you attend the meeting in person and vote your shares in person by completing a written ballot. Attendance at the meeting will not by itself revoke a previously granted proxy. If you are a street name stockholder and you vote by proxy, you may later revoke your proxy by informing the holder of record in accordance with that entity’s procedures.

What is the effect of an advisory vote?

Because your vote with respect to approval of our named executive officer (“NEO”) compensation is advisory, it will not be binding upon the Board. However, our Compensation Committee and the Board will take the outcome of the vote into account when considering future compensation arrangements for our executive officers.

What constitutes a quorum?

The holders of shares representing both (i) a majority of the aggregate outstanding shares entitled to vote, and (ii) a majority of the aggregate voting power of Common Stock, Series F Preferred Stock and Series G Preferred Stock entitled to vote must be present, in person or by proxy, to constitute a quorum to transact business at the annual meeting.

As of March 24, 2014,23, 2015, there were 213,426,795204,430,017 shares of our Common Stock with aggregate voting power of 213,426,795204,430,017 votes, one share of our Series F Preferred Stock with aggregate voting power of 3,500,000 votes, and one share of our Series G Preferred Stock with aggregate voting power of 899,858 votes, respectively, outstanding and entitled to vote.

Your stock is counted as present at the annual meeting if you attend the annual meeting and vote in person or if you properly return a proxy by Internet, telephone or mail. Abstentions and broker non-votes will be counted as present for purposes of establishing a quorum at the meeting.

What are broker non-votes?

The New York Stock Exchange (“NYSE”) permits brokers to vote their customers’ stock held in street name on routine matters, such as the ratification of the appointment of our independent registered public accounting firm, when the brokers have not received voting instructions from their customers. However, the NYSE does not allow brokers to vote their customers’ shares held in street name on non-routine matters unless they have received voting instructions from their customers. In such cases, the uninstructed shares for which the broker is unable to vote are called broker non-votes.

What routine matters will be voted on at the annual meeting?

Ratification of the appointment of our independent registered public accounting firm is the only matter to be voted on at the meeting on which brokers may vote in their discretion on behalf of customers who have not provided voting instructions.

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What non-routine matters will be voted on at the annual meeting?

The election of directors and the advisory vote on executive compensation are non-routine matters on which brokers are not allowed to vote unless they have received voting instructions from their customers.

What is the effect of not casting a vote?

If you are a stockholder of record and you do not cast your vote, no votes will be cast on your behalf on any of the matters that properly come before the meeting. If you hold your shares in street name, and you do not instruct your broker, bank or other nominee how to vote in the election of directors, the advisory vote to approve executive compensation or any other non-routine matter, no votes will be cast on your behalf on such matters, but your broker, bank or other nominee will continue to have discretion to vote any uninstructed shares on the ratification of the appointment of our independent registered public accounting firm.

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Where can I find the voting results of the annual meeting?

We plan to announce preliminary voting results at the meeting and publish final results in a Current Report on Form 8-K or an amendment thereto timely filed with the SEC. You may access or obtain a copy of thesethis and other reports free of charge on the Company’s website atwww.quantaservices.com or by contacting our investor relations department atinvestors@quantaservices.com. Also, the referenced Current Report on Form 8-K, any amendments thereto and other reports filed by Quanta with the SEC are available to you over the Internet on the SEC’s website atwww.sec.gov.

Who pays for the proxy solicitation related to the annual meeting?

The proxies being solicited hereby are being solicited by Quanta. The costs of soliciting proxies hereby, which may include the cost of preparing, printing and mailing the proxy materials, will be borne by Quanta. Our officers, directors and employees may, but without compensation other than their regular compensation, solicit proxies by further mailing or personal conversations, or by telephone, facsimile, postings on our website or other electronic means. We will also request banks, brokers and other custodians, nominees and fiduciaries to forward proxy materials to beneficial owners of our common stockCommon Stock and obtain their voting instructions. We will, upon request, reimburse brokerage firms and others for their reasonable expenses in forwarding solicitation materials to beneficial owners of our common stock.Common Stock. Quanta has not engaged an outside proxy solicitor for the annual meeting.

Can I get more than one copy of the proxy materials if multiple stockholders are located at my address?

In some instances, only one proxy statement and annual report is being delivered to multiple stockholders sharing an address unless we have received contrary instructions from one of those stockholders. Quanta undertakes to promptly deliver upon request a separate copy of such materials to any stockholder at a shared address to which a single copy of the documents was delivered. Stockholders sharing an address may also request delivery of a single copy of the proxy materials, but in such event will still receive separate proxies for each account. To request separate or single delivery of these materials now or in the future, stockholders should notify Quanta by contacting the Corporate Secretary in writing at Quanta Services, Inc., 2800 Post Oak Blvd., Suite 2600, Houston, Texas 77056 or by phone at 713-629-7600.

What if I receive more than one proxy card?

If you hold your shares in more than one type of account or your shares are registered differently, you may receive more than one proxy card. We encourage you to vote each proxy card that you receive.

Security Ownership of Certain

Beneficial Owners and Management

Security Ownership of Certain Beneficial Owners

The following table sets forth information, as of April 1, 2014,2015, unless otherwise indicated, with respect to each person known by us to be the beneficial owner of more than five percent (5%) of the outstanding shares of our Common Stock, Series F Preferred Stock or Series G Preferred Stock. Except as indicated otherwise, the beneficial owners named below have sole voting and investment power with respect to the shares indicated as beneficially owned.

Security Ownership of Certain

Beneficial Owners and Management

Security Ownership of Certain

Beneficial Owners and Management

Security Ownership of Certain

Beneficial Owners and Management

Security Ownership of Management

The following table sets forth, as of April 1, 2014,2015, the number of shares of Common Stock beneficially owned by (i) each of our directors and director nominees, (ii) each of our named executive officers listed in the 20132014 Summary Compensation Table (collectively, the “NEOs”), and (iii) all of our directors and executive officers as a group.

Security Ownership of Certain

Beneficial Owners and Management

Quanta Board of Directors

PROPOSAL NO. 1

ELECTION OF DIRECTORS

The Board currently consists of ten directors, whose current terms of office all expire at the 20142015 annual meeting. The Board proposes that the following ten nominees be elected for a new term of one year or until their successors are duly elected and qualified or until their earlier death, resignation or removal. Each of the nominees has consented to serve if elected. If a nominee becomes unavailable to serve as a director, the Board may designate a substitute nominee. In that case, the persons named as proxies will vote for the substitute nominee designated by the Board. Proxies cannot be voted for a greater number of persons than the number of nominees named below.

The director nominees standing for election are:

James R. Ballhas been a member of the Board of Directors since 1998 and is a private investor. He previously served in various management positions with Vista Chemical Company for over twenty-five years, most recently as Chief Executive Officer and President from 1992 until his retirement in 1995. He also previously served as a director of Kraton Polymers, LLC from 2004 to 2008, ABS Group Inc. from 2003 to 2005, The Carbide/Graphite Group, Inc. from 1994 to 2002, and Rexene Corporation from 1996 to 1997. Mr. Ball holds a Bachelor of Science in Mathematics degree and a Master of Science in Management degree. The Board believes Mr. Ball’s qualifications to serve on the Board include his over twenty-five years of management experience, including three years as a chief executive officer, his years of service on boards of other public companies, and his extensive experience with corporate governance, financial analysis, business strategy and management.

J. Michal Conaway has been a member of the Board of Directors since August 2007. He has served as the Chief Executive Officer of Peregrine Group, LLC, an executive consulting firm, since 2002. Mr. Conaway has been providing consulting and advisory services since 2000. Prior to 2000, Mr. Conaway held various management and executive positions, including serving as Chief Financial Officer of Fluor Corporation, an engineering, procurement, construction and maintenance services provider. Since 2008, Mr. Conaway has served as a director of GT Advanced Technologies, Inc., formerly known as GT Solar International, Inc. He previously served as a director of InfraSource Services, Inc. from February 2006 to August 2007 and Cherokee International Corporation from April 2008 to November 2008. Mr. Conaway holds an M.B.A. degree and is a Certified Public Accountant. The Board believes Mr. Conaway’s qualifications to serve on the Board include his prior service as the chief financial officer of multiple public corporations, including those within Quanta’s line of business, his years of service on boards of other public and private companies, his extensive financial and accounting expertise, and his advisory experience in strategic, operational and financial matters.

Quanta Board of Directors

Vincent D. Fosterhas been a member of the Board of Directors since 1998. He has served as Chairman of the Board and Chief Executive Officer of Main Street Capital Corporation, a specialty investment company, since March 2007. He also has served as Senior Managing Director of Main Street Capital Partners, LLC (and its predecessor

Quanta Board of Directors

firms), a private investment firm, since 1997. Mr. Foster has served as a director of Team Industrial Services, Inc. since 2005. Mr. Foster previously served as a director of U.S. Concrete, Inc. from 1999 to 2010, Carriage Services, Inc. from 1999 to 2011, and HMS Income Fund, Inc. from June 2012 to March 2013. Mr. Foster holds a J.D. degree and is a Certified Public Accountant. The Board believes Mr. Foster’s qualifications to serve on the Board include his significant contributions and service to Quanta since its inception, his experience as chief executive officer of a public corporation, his many years of service on boards of other public companies and his extensive tax, accounting, merger and acquisitions, financial and corporate governance expertise.

Bernard Friedhas been a member of the Board of Directors since March 2004. Since June 2012, he has served as the Executive Chairman of OpTerra Energy Group, an energy conservation measures services provider. Mr. Fried continues to serve, since March 2011, as the Executive Chairman of Energy Solutions International, a software provider to the pipeline industry, and he has also been an independent consultant. He previously served as Chief Executive Officer and President of Siterra Corporation, a software services provider, from May 2005 to March 2011. From November 2003 until May 2005, he served as an independent consultant to the financial and software services industries. Mr. Fried served as Chief Executive Officer and President of Citadon, Inc., a software services provider, from 2001 until November 2003, and Chief Financial Officer and Managing Director of Bechtel Enterprises, Inc., a financing and development subsidiary of Bechtel Group, Inc., from 1997 until 2000. Mr. Fried holds a Bachelor of Engineering degree and an M.B.A. degree. The Board believes Mr. Fried’s qualifications to serve on the Board include his executive management experience, including at companies within Quanta’s line of business, his years of service on boards of public and private companies, and his extensive executive-level experience in operations, engineering, construction, project management, finance and international business.

Louis C. Golmhas been a member of the Board of Directors since July 2002 and from May 2001 until May 2002. He has been an independent consultant and senior advisor to the telecommunications and information management industries since 1999. Mr. Golm holds a Master of Science in Management degree and an M.B.A. degree. The Board believes Mr. Golm’s qualifications to serve on the Board include his numerous years of executive management experience, including as chief executive officer of a large telecommunications company, his years of service as a director of other public and private companies, and his insight regarding sales and marketing, accounting/finance, risk mitigation and strategic development.

Worthing F. Jackman has been a member of the Board of Directors since May 2005. He has served as Executive Vice President - Chief Financial Officer of Waste Connections, Inc., an integrated solid waste services company, since September 2004 and served as its Vice President - Finance and Investor Relations from April 2003 until August 2004. From 1991 until April 2003, Mr. Jackman held various positions with Deutsche Bank Securities, Inc., an investment banking firm, most recently serving as a Managing Director, Global Industrial and Environmental Services Group. Mr. Jackman holds an M.B.A. degree. The Board believes Mr. Jackman’s qualifications to serve on the Board include his experience as the chief financial officer of a public corporation and his investment banking experience, as well as his extensive financial and accounting expertise.

James F. O’Neil IIIhas been a member of the Board of Directors and has served as our President and Chief Executive Officer since May 2011. He previously served as our President and Chief Operating Officer from October 2008 to May 2011, our Senior Vice President of Operations Integration and Audit from December 2002 to October 2008, and our Vice President of Operations Integration from August 1999 to December 2002. Mr. O’Neil holds a Bachelor of Science in Civil Engineering degree. The Board believes Mr. O’Neil’s qualifications to serve on the Board include his significant contributions to Quanta in strategy, mergers and acquisitions and internal audit, his operational and safety leadership service with Quanta, including as its President and Chief Executive Officer, his technical expertise, and his extensive knowledge of the industries Quanta serves.

Quanta Board of Directors

Bruce Ranck has been a member of the Board of Directors since May 2005 and Chairman of the Board since May 2013. He has been a partner with Bayou City Partners, a venture capital firm, since 1999. Mr. Ranck served as Chief Executive Officer of Tartan Textile Services, Inc., a healthcare linen services provider, from August 2003 until

Quanta Board of Directors

April 2006. From 1970 until 1999, he held various positions with Browning-Ferris Industries, Inc., a provider of waste management services, most recently as Chief Executive Officer and President. Mr. Ranck served as a director of Dynamex Inc. from 2002 until February 2011. He received a Bachelor of Arts degree from Michigan State University in 1970. The Board believes Mr. Ranck’s qualifications to serve on the Board include his executive management experience, including as chief executive officer of a large public corporation, his extensive acquisition integration experience, and his years of service on boards of other public and private companies.

Margaret B. Shannon has been a member of the Board of Directors since December 2012. She served as Vice President and General Counsel of BJ Services Company, an international oilfield services company, from 1994 to 2010, when it was acquired by Baker Hughes Incorporated. Prior to 1994, she was a partner with the law firm of Andrews Kurth LLP. Ms. Shannon has served on the board of directors of Matador Resources Company, an exploration and production company, since June 2011. In addition, she is active in several not-for-profit organizations in Houston. Ms. Shannon received her J.D. cum laude from Southern Methodist University Dedman School of Law in 1976 and her Bachelor of Arts degree from Baylor University in 1971. The Board believes Ms. Shannon’s qualifications to serve on the Board include vast experience in the energy industry, as well as in corporate governance, and her years of service on boards of other public and private companies.

Pat Wood, IIIhas been a member of the Board of Directors since May 2006. He has served as a Principal of Wood3 Resources, an energy infrastructure developer, since July 2005. From 2001 until July 2005, Mr. Wood served as Chairman of the Federal Energy Regulatory Commission. From 1995 until 2001, he chaired the Public Utility Commission of Texas. Prior to 1995, Mr. Wood was an attorney with Baker Botts L.L.P., a global law firm, and an associate project engineer with Arco Indonesia, an oil and gas company, in Jakarta. Mr. Wood has served as a director of SunPower Corporation since 2005, and non-executive chairman of the board of directors of Dynegy, Inc. since October 2012.2012 and director of Memorial Resource Development since June 2014. Mr. Wood previously served as a director of First Wind Holdings Inc. from 2010 to June 2012. Mr. Wood holds a Bachelor of Science in Civil Engineering degree and a J.D. degree. The Board believes Mr. Wood’s qualifications to serve on the Board include his significant strategic and operational management experience, his unique perspective and extensive knowledge with regard to the legal and regulatory process and policy development at the government level, his years of service as a director of other public and private companies, and his energy infrastructure development expertise.

The Board of Directors unanimously recommends a voteFOR the election of each of the director nominees.

Corporate Governance

We are committed to having sound corporate governance practices that maximize stockholder value in a manner consistent with legal requirements and the highest standard of integrity. In that regard, the Board has adopted guidelines that provide a framework for the governance of Quanta. In addition, we continually review these guidelines and regularly monitor developments in the area of corporate governance. Our Corporate Governance Guidelines are posted on our website atwww.quantaservices.com under the heading “Investors & Media / Corporate Governance.”

Board Leadership Structure

The Board believes that the leadership structure of Quanta’s Board should include either an independent non-executive Chairman of the Board or a Lead Director who satisfies Quanta’s standards for independence. The Board believes that the appointment of a Lead Director achieves many of the benefits claimed to result from the separation of the Chairman of the Board and the CEO roles. The Board reviews its leadership structure from time to time to assess whether it continues to serve the best interests of Quanta and its stockholders. The Board believes that this approach provides flexibility to adapt to changing circumstances, enabling the Board to fulfill its oversight role and allowing the Board to review the manner in which its leadership is configured with a view toward maintaining a structure that best serves Quanta and its stockholders.

Chairman of the Board

Quanta’s Corporate Governance Guidelines provide that the Board will appoint a Chairman of the Board, who may but need not be an employee of Quanta. The Chairman of the Board presides over all regular sessions of the Board and Quanta’s annual meetings of stockholders. With input from the CEO (if the Chairman is an independent director), or in consultation with the Lead Director (if the Chairman is not an independent director), the Chairman sets the agenda for Board meetings, subject to the right of each Board member to suggest the inclusion of item(s) on any agenda. The Chairman of the Board may vote at any meeting of the Board on any matter called to a vote, subject to the legal, fiduciary and governance requirements applicable to all members of the Board. If the Chairman of the Board is an independent director, the duties and responsibilities of the Chairman of the Board generally include the following:

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Additional duties and responsibilities of the Chairman of the Board may be established from time to time by the Board and the Governance and Nominating Committee of the Board.

In May 2014, the Board re-appointed Bruce Ranck, an independent director, as non-executive Chairman of the Board to serve as such until his successor is duly elected and qualified at the next annual meeting of the Board or until his earlier resignation or removal. Mr. Ranck has served as Quanta’s non-executive Chairman of the Board since his initial appointment in May 2013. The Board may modify this structure in the future to ensure that the Board leadership structure for Quanta remains effective and advances the best interests of our stockholders.

Lead Director

In the event the Chairman of the Board is not an independent director, our Corporate Governance Guidelines provide that a Lead Director will be elected exclusively by the independent directors. The Lead Director must be an independent director and will assist the Chairman of the Board and the remainder of the Board in assuring effective corporate governance in managing the affairs of the Board. A Lead Director is responsible for ensuring that the quality, quantity and timeliness of the flow of information between management and the Company and the Board enables the Board to fulfill its functions and fiduciary duties in an efficient and effective manner. In addition, the Lead Director will coordinate the activities of the other independent directors, preside over the Board when the Chairman of the Board is not present, consult with the Chairman of the Board as to agenda items for Board and committee meetings, and perform such other duties and responsibilities as the Board deems appropriate.

Board Leadership in 2013

Mr. Colson, Quanta’s founder and former Chief Executive Officer, served as Executive Chairman from May 2011 to May 2013. The Board believed that Quanta’s Executive Chairman was well suited to serve as Chairman of the Board because, as an executive officer, he possessed detailed and in-depth knowledge of the issues, opportunities and challenges facing Quanta and its business and was thus well positioned to develop agendas that ensure that the Board’s time and attention are focused on the most critical matters. The Board further believed that it employed sound counter-balancing measures to ensure that Quanta maintained high standards of corporate governance and proper independent oversight.

Given that the Executive Chairman was not independent under the categorical standards for director independence set forth in Quanta’s Corporate Governance Guidelines, the independent members of the Board designated Vincent D. Foster as Lead Director. Mr. Foster served as Lead Director through May 2013.

Upon Mr. Colson’s retirement from the Company and the Board in May 2013, the Board appointed Bruce Ranck, an independent director, as non-executive Chairman of the Board. The Board may modify this structure in the future to ensure that the Board leadership structure for Quanta remains effective and advances the best interests of our stockholders.

The Board’s Role in Risk Oversight

The Board oversees an enterprise-wide approach to risk management, designed to support the achievement of long-term organizational objectives and enhance stockholder value. The annual enterprise risk management assessment, led by Quanta’s President and Chief Executive Officer, provides visibility to the Board about the identification, assessment and management of critical risks and management’s risk mitigation strategies. In this process, risk is assessed throughout the business, including operational, financial, legal, regulatory, strategic and reputational risks. A fundamental part of risk management is not only understanding the risks a company faces and what steps management is taking to manage those risks, but also understanding what level of risk is appropriate for the company. The involvement of the full Board in setting Quanta’s business strategy, both short-term and long-term, is a key part of its understanding of Quanta’s risks and what constitutes an appropriate level of risk for Quanta as well as how such risks are managed.

While the Board has the ultimate oversight responsibility for the risk management process, various committees of the Board also have responsibility for risk management. Specifically, the Audit Committee focuses on risks relating to

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financial reporting, internal controls and compliance with legal and regulatory requirements. In addition, the Compensation Committee focuses on risks relating to Quanta’s compensation policies and programs and, in setting compensation, strives to create incentives that are aligned with Quanta’s

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risk management profile. Quanta’s Governance and Nominating Committee focuses on risks relating to Quanta’s corporate governance and Board membership and structure and also conducts an annual assessment of the risk management process and reports its findings to the Board. Finally, Quanta’s Investment Committee focuses on risks associated with prospective acquisitions, dispositions and investments, as well as capital investment strategies.

Board Independence

As of the date of this Proxy Statement, the Board is composed of ten directors. The Board has determined that Messrs. Ball, Conaway, Foster, Fried, Golm, Jackman, Ranck and Wood and Ms. Shannon have no material relationship with Quanta (either directly or as a partner, stockholder or officer of an organization that has a relationship with Quanta) and are “independent” within the meaning of the NYSE’s corporate governance listing standards. The Board has made this determination based in part on its finding that these independent directors meet the categorical standards for director independence set forth in our Corporate Governance Guidelines and in the NYSE corporate governance listing standards. Our Corporate Governance Guidelines, which include our categorical standards for director independence, are posted on our website atwww.quantaservices.com under the heading “Investors & Media / Corporate Governance.” With nine directors deemed independent, the Board maintains a percentage of independent directors serving on the Board substantially above the NYSE requirement that a majority of directors be independent.

Executive Sessions of Non-Management Directors

In accordance with the NYSE corporate governance listing standards, our non-management directors, each of whom is “independent” within the meaning of NYSE corporate governance listing standards and our Corporate Governance Guidelines, meet in executive session without management at each regularly scheduled Board meeting.

Director Meetings

During the year ended December 31, 2013,2014, the Board held sixeight meetings. All directors attended at least 75% of the meetings of the Board and the committees of the Board, if any, on which they served during the periods for which they have served as a director. We encourage, but do not require, the members of the Board to attend the annual meeting of stockholders. Last year, ten continuingall directors and one retiring director attended the annual meeting of stockholders, and one retiring director did not attend.stockholders.

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Committees of the Board

The Board has four standing committees: the Audit Committee, the Compensation Committee, the Governance and Nominating Committee, and the Investment Committee. The Board has examined the composition of each standing committee and has determined that each member of these committees is “independent” within the meaning of SEC regulations, NYSE corporate governance listing standards and our Corporate Governance Guidelines. Each standing committee operates under a formal charter adopted by the Board that governs its responsibilities. The committee charters are posted on our website atwww.quantaservices.com under the heading “Investors & Media / Corporate Governance.” The current membership and the number of meetings held during the last fiscal year and the primary responsibilities of each standing committee are set forth below:

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Compensation Committee Interlocks and Insider Participation

No member of the Compensation Committee served as an employee or officer of Quanta or any of its subsidiaries during 2013,2014, was formerly an officer of Quanta or any of its subsidiaries, or had any relationship with Quanta requiring disclosure herein as a related party transaction, except that Vincent D. Foster served as president of Quanta on an interim basis from December 1, 1997 to December 19, 1997.transaction. Additionally, no executive officers served on the compensation committee or as a director of another company, one of whose executive officers served on Quanta’s Compensation Committee or as a director of Quanta.

Code of Ethics and Business Conduct

The Board has adopted a Code of Ethics and Business Conduct that applies to all directors, officers and employees of Quanta and its subsidiaries, including the principal executive officer, principal financial officer and

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principal accounting officer or controller. The Code of Ethics and Business Conduct is posted on our website at

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www.quantaservices.com under the heading “Investors & Media / Corporate Governance.” We intend to post at the above location on our website any amendments or waivers to the Code of Ethics and Business Conduct that are required to be disclosed pursuant to Item 5.05 of Form 8-K.

Communications with the Board

Stockholders and other interested parties may communicate with one or more of our directors, including our non-management directors or independent directors as a group, a committee or the full Board by writing to Corporate Secretary, Quanta Services, Inc., 2800 Post Oak Blvd., Suite 2600, Houston, Texas 77056. All communications will be reviewed by the Corporate Secretary and forwarded to one or more of our directors, as appropriate.

Identifying and Evaluating Nominees for Director

The Governance and Nominating Committee regularly evaluates the appropriate size of the Board and whether any vacancies on the Board are expected due to retirement or otherwise. In the event that vacancies are anticipated or otherwise arise, the Governance and Nominating Committee will consider candidates for Board membership suggested by incumbent directors, management, third-party search firms and others. The Governance and Nominating Committee will also consider director nominations by stockholders that are made in compliance with the notice provisions and procedures set forth in our bylaws. For a discussion of these requirements, see “Additional Information —– Stockholder Proposals and Nomination of Directors for the 20152016 Annual MeetingMeeting..” All applications, recommendations or proposed nominations for Board membership received by Quanta will be referred to the Governance and Nominating Committee. The manner in which the Governance and Nominating Committee evaluates the qualifications of a nominee for director does not differ if the nominee is recommended by a stockholder.

The Governance and Nominating Committee has the authority to retain, at Quanta’s expense, a third-party search firm to help identify and facilitate the screening and interview process of potential director nominees, including screening candidates, conductingand the third-party firm may, among other things, conduct reference checks, preparingprepare a biography of each candidate for the Governance and Nominating Committee to review and helpinghelp coordinate interviews.

Once the Governance and Nominating Committee has identified a potential director nominee, the committee makes an initial determination as to whether to conduct a full evaluation of the candidate. This initial determination is based on whatever information is provided to the committee with the recommendation of the candidate, as well as the committee’s own knowledge of the candidate, which may be supplemented by inquiries to the person making the recommendation or others. The committee also may engage a third party to conduct a background check of the candidate. If the committee determines to further pursue the candidate, the committee then will evaluate the extent to which the candidate meets the Board membership qualifications described in “Director Qualifications” below.

In addition, the Governance and Nominating Committee considers other relevant factors it deems appropriate, including the current composition of the Board (including its diversity in experience, background, gender and ethnicity), the balance of management and independent directors, the need for a certain Board committee expertise, and the nature and extent of a candidate’s activities unrelated to Quanta, including service as a director on the boards of other public companies. In connection with this evaluation, the committee determines whether to interview the candidate, and, if warranted, the committee interviews the candidate in person or by telephone. The committee may also ask the candidate to meet with members of Quanta’s management or other Board members. After completing this evaluation, if the committee believes the candidate would be a valuable addition to the Board, it will recommend to the Board the candidate’s nomination for appointment or election as a director.

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Director Qualifications

Our Corporate Governance Guidelines contain Board membership qualifications that the Governance and Nominating Committee considers in selecting nominees for our Board. Pursuant to these qualifications, members of the

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Board should possess the highest standards of personal and professional ethics, integrity and values, and be committed to representing the long-term interests of our stockholders. They must also have an inquisitive and objective perspective, practical wisdom, mature judgment, the willingness to speak their mind and the ability to challenge and stimulate management in a constructive manner. In addition, Board members should have diverse experience at policy-making levels that may include business, government, education, technology or non-profit organizations, as well as experience in areas that are relevant to our business. Further, they should have demonstrated leadership skills in the organizations with which they are or have been affiliated.

Members of the Board must also be willing to devote sufficient time to carrying out their duties and responsibilities effectively and should be committed to serve on the Board for an extended period of time. As such, our Corporate Governance Guidelines provide that Board members should not serve on more than three additional public company boards, and Board members that are chief executive officers (or hold an equivalent position) with another public company should not serve on more than one public company board in addition to Quanta’s Board and their own company board. Board members will not be nominated for election to the Board if the election would occur after their 73^rd birthday; however, the full Board may make exceptions to the mandatory retirement age in special circumstances. In February 2015, the Governance and Nominating Committee considered the nomination of Mr. Golm for election to the Board after his 73^rd birthday, concluding that he continued to meet all of the other qualifications described above and that his continued service on the Board and the Compensation Committee would help facilitate oversight of Quanta’s new executive compensation incentive plans and ensure a smooth transition of the chairmanship of the Compensation Committee. Accordingly, the Governance and Nominating Committee recommended to the Board that Mr. Golm be nominated for election as a director at the 2015 annual meeting. After considering such recommendation and its reasoning, the Board granted an exception to the mandatory retirement age for Mr. Golm in February 2015.

The Governance and Nominating Committee also seeks directors representing a broad range of viewpoints and diverse backgrounds, including women and minorities that meet the above qualifications.

Director Compensation

The Governance and Nominating Committee has the responsibility of recommending to the Board compensation and benefits for non-employee directors. The committee is guided by certain director compensation principles set forth in our Corporate Governance Guidelines. Directors who also are employees of Quanta or any of its subsidiaries do not receive additional compensation for serving as directors. As employees of Quanta, John R. Colson, former Executive Chairman, and James F. O’Neil III, President and Chief Executive Officer, received no compensation for their services as directors of Quanta. The compensation received by Messrs. Colson and O’Neil as employees of Quanta is set forth in the 2013 Summary Compensation Table.

Historical Director Compensation

Pursuant to the director compensation arrangement in effect until May 23, 2013, each non-employee director received a fee for attendance at each meeting of the Board or any committee according to the following schedule: $2,000 for attendance at a board meeting in person; $1,000 for attendance at a board meeting by telephone; $1,000 for attendance at a committee meeting in person; and $500 for attendance at a committee meeting by telephone. Upon initial election to the Board at an annual meeting of stockholders, each such initially elected non-employee director received a cash retainer payment of $50,000 and an award of shares of restricted stock having a value of $150,000. Such awards of restricted stock provided that, unless the director’s service was interrupted, the awards would vest over three years in equal annual installments, vest in full upon certain events, and be forfeited upon resignation or removal for cause. Upon initial appointment to the Board other than at an annual meeting of stockholders, for the period from the appointment through the end of the director service year during which the appointment is made, each such initially appointed non-employee director received a pro rata portion of both (i) a cash retainer payment of $50,000 and (ii) an award of shares of restricted stock having a value of $150,000. At every annual meeting of stockholders at which a non-employee director was re-elected or remained a director, each such re-elected or remaining non-employee director received an annual cash retainer payment of $50,000 and an annual award of shares of restricted stock having a value of $100,000.

In addition, at every annual meeting of the Board, the non-employee directors appointed to the following positions received the supplemental annual cash retainers set forth below; provided, however, that any individual who serves as both Lead Director and as a committee chairman receives only the supplemental annual cash retainer designated for the Lead Director:

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Directors were also reimbursed for reasonable out-of-pocket expenses incurred in attending meetings of the Board or the committees thereof, and for other expenses reasonably incurred in their capacity as directors of Quanta.

Changes in Director Compensation in 2013

During the fourth quarter of 2012, the Governance and Nominating Committee retained Deloitte Consulting LLP (“Deloitte”) to provide benchmarking data and review the competitiveness of Quanta’s non-employee director compensation. Deloitte examined director compensation data for the same peer group used for the named executive officer compensation review, namely eighteen companies similar to Quanta in terms of industry, revenue size and market capitalization, as well as director compensation survey data, and presented its findings and observations to the Board. Further information about the peer group is disclosed in“Compensation Discussion & Analysis – Compensation Philosophy and Process – Use of Compensation Benchmarking Studies.” Following this review, the Board approved an updated non-employee director compensation program in December 2012, effective as of May 23, 2013. Acknowledging Quanta’s significant growth over the past few years and its historical practice of adjusting director compensation only every two or three years, the Board elected to align non-employee director compensation to competitive peer group practices. Changes to non-employee director compensation were designed to eliminate and replace board meeting fees with a slight increase in the annual board membership cash retainer, eliminate and replace committee meeting fees with new annual committee membership cash retainers, adjust the Lead Director and committee chairmanship annual cash retainers, eliminate the restriction limiting compensation to a single leadership role, eliminate the first year premium for election to the Board in the annual equity grant, reduce the vesting period of the annual equity grant to one year, and increase the amount of the annual equity grant. In addition, the Board approved a deferred compensation plan for non-employee directors in 2013 to enable Quanta’s non-employee directors to defer receipt of some or all of their cash or equity-based compensation for serving on the Board. Further information about the plan is disclosed in“– Current Director Compensation – Deferred Compensation Plan for Non-Employee Directors.”

In May 2013, the Governance and Nominating Committee again reviewed director compensation in connection with the change in leadership structure of the Board. Deloitte examined compensation levels for the role of non-executive Chairman of the Board for peer group companies, for other companies similar in size to Quanta, and as reflected in survey data, and presented its findings and observations to the Board. Following this analysis, the Board further adjusted director compensation, effective as of May 23, 2013, to provide appropriate compensation for the significant responsibilities assumed by a non-executive Chairman of the Board.

Current Director Compensation

Effective May 23, 2013, at every annual meeting of stockholders at which a non-employee director is elected or re-elected, each such director will receivereceives (i) an annual award of restricted stock or RSUs having a value of $140,000 and (ii) the annual cash retainer(s) set forth below for board membership, committee membership, and board/committee leadership to which such non-employee director is appointed:

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Upon initial appointment to the Board other than at an annual meeting of stockholders, each such initially appointed non-employee director will receivereceives (for the period from the appointment through the end of the current director service year during which the appointment is made)year) a pro rata portion of suchthe equity award and applicable cash amounts.

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AnyOur non-employee Chairman of the Board will receivereceives additional annual compensation in the amount of $163,800, of which 50% will beis payable in cash, and 50% will beis payable in restricted stock or RSUs. Upon the initial appointment asof a non-employee Chairman of the Board, other than immediately following the annual meeting of stockholders, such director will receivereceives (for the period from the appointment through the end of the current director service year during which the appointment is made)year) a pro rata portion of the additional annual compensation described above.compensation.

Unless the director’s Board service is terminated earlier, terminated, restricted stock or RSUs awarded to non-employee directors willgenerally vest on May 28^thshortly after conclusion of the year following the date of grant.director service year. Subject to the terms of applicable award agreements, unvested restricted stock or RSUs held by (i) any non-employee director who is not nominated for or elected to a new term, including for example, due to a reduction in the size of the Board, age precluding a re-nomination, the identification of a new nominee, or the desire to retire at the end of a term, or (ii) any non-employee director who resigns at Quanta’s convenience, including any resignation resulting from the non-employee director’s failure to receive a majority of the votes cast in an election for directors as required by Quanta’s Bylaws, will vest in full on the earlier of (a) May 28^th following conclusion of the director service year, following the date of grant, or (b) the date of such non-employee director’s termination of service. RSUs granted to non-employee directors are settled in shares of Quanta Common Stock.

Generally, meeting fees willare not be paid. However, in order to compensate for the time required to accommodate extraordinary meeting activity, each non-employee director (or committee member, as applicable) will receivereceives a fee for attendance at the tenth and any subsequent meeting of the Board or the tenth and any subsequent meeting of such committee, in each case during a single director service year, as follows: $2,000 for attendance at a board meeting in person; $1,000 for participation at a board meeting by telephone; $1,000 for attendance at a committee meeting in person; and $500 for participation at a committee meeting by telephone. Additionally, during 2014 the Board approved a special one-time $25,000 payment to Mr. Fried in recognition of the significant incremental time and effort required as chairman of our Audit Committee during 2014.

Directors are also reimbursed for reasonable out-of-pocket expenses incurred to attend meetings of the Board or the committees thereof, and for other expenses reasonably incurred in their capacity as directors of Quanta. Directors who also are employees of Quanta or any of its subsidiaries do not receive additional compensation for serving as directors. Currently, nine non-employee director nominees are standing for election at the annual meeting. As President and Chief Executive Officer of Quanta, James F. O’Neil III received no compensation for his service as a director of Quanta. The compensation received by Mr. O’Neil as an employee of Quanta is set forth in the 2014 Summary Compensation Table.

Prospective Changes in Director Compensation

During the fourth quarter of 2014, the Governance and Nominating Committee retained Deloitte Consulting LLP (“Deloitte”) to, among other things, review Quanta’s non-employee director compensation, provide observations and recommendations regarding Quanta’s non-employee director compensation program, and highlight relevant trends in director compensation. Deloitte examined director compensation data for the same peer group used for the named executive officer compensation review, namely 17 companies similar to Quanta in terms of industry, revenue size and market capitalization, as well as director compensation survey data, and presented its findings and observations to the Governance and Nominating Committee. Further information about the peer group is disclosed in“Compensation Discussion & Analysis – Compensation Philosophy and Process – Role of Compensation Consultant.” 

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In March 2015, after review of the information presented by Deloitte and upon recommendation by the Governance and Nominating Committee, the Board approved the following changes to the non-employee director compensation program, effective as of May 21, 2015, in order to better align with competitive peer group practices:

Additionally, upon recommendation by the Governance and Nominating Committee, the Board approved revised settlement terms for RSU awards to non-employee directors. Specifically, non-employee directors may elect to settle up to 50% of any RSU award in cash if the non-employee director is in compliance with Quanta’s stock ownership guidelines as of the date of settlement and is expected to remain in compliance immediately following settlement.

Deferred Compensation Plan for Non-Employee Directors

Non-employee directors are eligible to participate in a deferred compensation plan maintained by Quanta. The deferred compensation plan allowsNo later than December 31 of each year, each non-employee directorsdirector may voluntarily elect to defer receiptall or a portion (in 5% increments) of up to 100% of thehis or her annual cash retainers, including but not limited to, compensation for board membership, committee membership and RSU awardsboard/committee leadership, and RSUs to allocate deferredbe earned with respect to services performed in the following year. Deferral elections are irrevocable and if no deferral election is made, no compensation is deferred.

Deferred cash amounts are allocated to a separate recordkeeping account maintained for the non-employee director that reflects the amounts deferred and any earnings (positive or negative). The account is credited with returns according to the performance of the deemed investment choices selected by the non-employee director from time to time, from among the deemed investment choices made available by Quanta. However, Quanta has no obligation to provide any deemed investment choice other than a groupcash account deemed invested in cash equivalents based on the mid-term annual applicable federal rate, as adjusted on the first day of notional accounts that mirror the gains and/or losses of various investment funds.each subsequent year. The interest rate earned on the deferred cash amounts is not above-market or preferential. Deferred RSUs are recorded in an account maintained for the non-employee director that are deferred may be settled in Quanta common stock. reflects the number of shares deferred.

In general, deferred amounts arecompensation is distributed to the participantnon-employee director (or his or her beneficiary) upon the director leaving the Board or at a specific date as elected in advance by the participant.director. Additionally, deferred amounts can be distributed upon certain unforeseen emergencies suffered by the non-employee director or upon a change in control of Quanta.

Messrs. Ball, Foster, Fried and Golm elected to defer all or a portion of their cash compensation during 2014. Messrs. Ball, Conaway, Foster, Fried, Golm, Jackman and Wood elected to defer compensationall or a portion of their RSU awards during 2013.2014.

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Stock Ownership Guidelines for Non-Employee Directors

Non-employee directors are required to hold stock with a value equivalent to five times the annual cash retainer for Board membership (excluding the annual cash retainer for committee membership or any supplement for serving as a committee chairman or as chairman of the Board). Non-employee directors have five years from the fiscal year-end following initial election to the Board to accumulate the stock ownership prescribed by the guidelines. As of December 31, 2013,2014, all non-employee directors met the requirements of the Company’s stock ownership guidelines, as Ms. Shannon, who was initially elected to the Board in 2012, is expected to exceed the prescribed ownership within five years of initial election as a director, and all remaining non-employee directors exceeded the ownership level prescribed by the stock ownership guidelines.

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20132014 Director Compensation Table

The following table sets forth the compensation for each non-employee director during the 20132014 fiscal year.

Executive Officers

The current executive officers of Quanta are as follows:

For a description of the business background of Mr. O’Neil, see“Proposal No. 1 -– Election of Directors” above.

Earl C. (Duke) Austin, Jr. has served as our Chief Operating Officer since January 2013. He previously served as President of the Electric Power Division and Natural Gas and Pipeline Division from May 2011 to December 2012 and had responsibility for oversight of power and pipeline operations since January 2011. He served as President of the Natural Gas and Pipeline Division from October 2009 to May 2011 and as President of North Houston Pole Line, L.P., an electric and natural gas specialty contractor and now a subsidiary of Quanta, from 2001 until September 2009. He is currently a director of the Southwest Line Chapter of NECA. Mr. Austin holds a Bachelor of Arts in Business Management degree.

Derrick A. Jensen has served as our Chief Financial Officer since May 2012. He previously served as our Senior Vice President – Finance, Administration and Chief Accounting Officer from March 2011 to May 2012, as our Vice President and Chief Accounting Officer from March 1999 to March 2011, and as our Controller from December 1997 until March 2009. Mr. Jensen holds a Bachelor of Science in Business Administration degree in Accounting and became a Certified Public Accountant in the State of Texas in 1997.

Jesse E. Morris has served as our Executive Vice President – Corporate Development since January 2014. He previously served in various roles with Sysco Corporation, including Vice President and Chief Financial Officer – Foodservice Operations from September 2013 to December 2013, Vice President of Finance and Chief Financial Officer – Broadline Operations from February 2012 to August 2013, Vice President, Business Process Management from May 2011 to January 2012, and Vice President, Business Transformation from January 2009 to April 2011. Mr. Morris holds a Bachelor of Business Administration in Finance and Accounting and a Masters in Professional Accounting.

Eric B. BrownSteven J. Kemps has served as our Executive Vice President and General Counsel since FebruarySeptember 2014. He was an independent consultantPrior to joining Quanta, he served as General Counsel for Hess Retail Corporation from September 20112013 to February 2014.September 2014 until it was sold to Marathon Petroleum. He previously served in various executive management roles with Transocean Ltd.,Dean Foods Company, including Executive Vice President, LegalGeneral Counsel and AdministrationCorporate Secretary from February 20112008 to August 2011,2013 and Senior Vice President and Deputy General Counsel from February 20012006 to February2008. Mr. Kemps held various legal positions with increasing responsibility at Kimberly-Clark Corporation from 1997 to 2006. From 1993 to 1997, he was an attorney with Dorsey & Whitney, LLP, and from 1991 to 1993, he served as a law clerk to Judge Paul A. Magnuson of the United States District Court, Minnesota. Mr. Kemps holds a Bachelor of Business Administration degree in Accounting and a Juris Doctorate degree, and he holds a Certified Public Accountant certificate.

Executive Officers

Dale L. Querreyhas served as our President – Electric Power since March 2015. He previously served as president of PAR Electrical Contractors, Inc. (PAR), a wholly owned subsidiary of Quanta, from January 2011 to March 2015, and in various other roles with Quanta and PAR from November 2004 to January 2011, including Chief Operating Officer of PAR from August 2008 to January 2011. Prior to joining Quanta, he served in various roles with ABB Inc. and its affiliates, including Vice President and General Counselof Operations from February 1995April 2002 to February 2001.October 2004. Mr. BrownQuerrey holds a Juris DoctorateBachelor of Science in Electrical Engineering and Mechanical Engineering degree and a Master of Science in Electrical Engineering degree.

Nicholas M. Grindstaff has served as our Vice President – Finance since May 2011 and our Treasurer since October 1999. He previously served as a Vice President from March 2010 to May 2011 and as Assistant Treasurer from March 1999 until September 1999. Mr. Grindstaff holds a Master of Science in Accounting degree.

Peter B. O’Brien has served as our Vice President – Mergers and Acquisitions since January 2014. He previously served as Vice President – Tax from May 2012 to January 2014 and as Tax Director from June 2000 to May 2012. Mr. O’Brien holds a Bachelor of Business Administration in Accounting degree and a Master in Professional Accounting degree and became a Certified Public Accountant in the State of Texas in 1995.

Dorothy Upperman has served as our Vice President – Tax since October 2014. She previously served in various tax management roles with Wal-Mart Stores, Inc., including Sr. Director, Income Tax from 2008 to October 2014 and Director of Federal Audits & SOX Controls from 2007 to 2008. From 1998 to 2004, Ms. Upperman held various positions with Ernst & Young, LLP, most recently serving as Sr. Manager. Ms. Upperman holds a Bachelor of Business Administration degree in Accounting and is a Certified Public Accountant in the State of Texas.

Wilson M. Yancey, Jr. has served as our Vice President – Health/Safety and Environmental since April 2010. He previously served as Quanta’s Director of Health/Safety and Environmental from June 1999 to April 2010. Mr. Yancey holds a Bachelor of Science in Business Management and has over thirty years of experience as a safety professional.

Compensation Discussion & Analysis

Executive Summary

This Compensation Discussion and Analysis (“CD&A”) describes Quanta’s executive compensation program for 2013.2014. We use this program to attract, motivate and retain the employees who lead our business. In particular, this CD&Asection explains how the Compensation Committee made its compensation decisions for our named executive officers, or NEOs, for 20132014 and describes how this compensation fits within the Compensation Committee’s guiding principles with respect to NEO compensation.

Named Executive Officers

Our NEOs for 20132014 include five executive officers who are sometimes referred to herein as “continuing NEOs,” as well as twoone former executive officers,officer, as follows:

2013 Business and Performance HighlightsOverall Compensation Decisions

Overall, the Compensation Committee believes that the total compensation paid to Quanta’s operational performanceNEOs in 2013 was strong2014 is reasonable and marked aappropriate. Quanta completed another successful year in which2014 despite continuing to operate in a challenging business environment. Notably, Quanta achieved the Company achieved many milestones. These successes were achieved even though the industriesfollowing in which we operate faced an uncertain business environment during 2013, with gradual improvement in the economy, yet continuing uncertainty in the marketplace due in part to stringent regulatory and environmental requirements impacting project implementation and infrastructure expansion. Listed below are some of Quanta’s notable accomplishments:2014:

Compensation Discussion & Analysis

However, despite these accomplishments, the level of achievement for the 2014 company performance metrics failed to reach target levels and fell below the achievement level attained for the 2013 performance year. As a result, with respect to all NEOs, total cash compensation paid for the 2014 performance year was below target cash compensation, and with respect to the three NEOs who were also NEOs in 2013, total cash compensation paid for the 2014 performance year decreased as compared to the 2013 performance year. The following table details the decrease in cash awards and total cash compensation for these three NEOs: