Wisconsin

Quanta’s 2022 Sustainability Report and this website (and oral statements regarding the subject matter of the report and website) include forward-looking statements intended to qualify under the “safe harbor” from liability established by the Private Securities Litigation Reform Act of 1995. These forward-looking statements include any statements reflecting Quanta’s business or financial outlook; expectations regarding opportunities, technological developments, competitive positioning, future economic and regulatory conditions and other trends in particular markets or industries, including with respect to Quanta’s increased operations in the renewable energy market and the transition to a carbon-neutral economy; expectations regarding Quanta’s plans, strategies and opportunities; the potential benefits from, and future financial and operational performance of, acquired businesses and investments, including Blattner Holding Company and Quanta’s investment in LUMA Energy, LLC; the business plans or financial condition of Quanta’s customers; the development of and opportunities with respect to future projects, including renewable energy projects and other projects designed to support transition to a carbon-neutral economy, electrical grid modernization, upgrade and hardening projects, and larger transmission and pipeline projects; the expected impact of changes or potential changes to climate; the impact of existing or potential legislation or regulation; and potential opportunities that may be indicated by bidding activity or discussions with customers; as well as other statements reflecting expectations, goals, targets, intentions, strategies, assumptions, plans or beliefs about future events or performance or that do not solely relate to historical or current facts. These forward-looking statements are not guarantees of future performance; rather they involve or rely on a number of risks, uncertainties, and assumptions that are difficult to predict or are beyond our control, and reflect management’s beliefs and assumptions based on information available at the time the statements are made. We caution you that actual outcomes and results may differ materially from what is expressed, implied or forecasted by our forward-looking statements and that any or all of our forward-looking statements may turn out to be inaccurate or incorrect. For additional information concerning some of the risks, uncertainties, assumptions and other factors that could affect our forward-looking statements, please refer to Quanta’s Annual Report on Form 10-K for the year ended Dec. 31, 2022, Quanta’s Quarterly Reports on Form 10-Q and other documents filed with the U.S. Securities and Exchange Commission, which are available on our website (www.quantaservices.com). Should one or more of these risks materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those expressed or implied in any forward-looking statements. You should not place undue reliance on Quanta’s forward-looking statements, which are current only as of the date Quanta’s 2022 Sustainability Report is published. Quanta does not undertake and expressly disclaims any obligation to update or revise any forward-looking statements to reflect events or circumstances after such date or otherwise, and Quanta does not undertake and expressly disclaims any obligation to verify any written or oral statements made by any third party regarding the subject matter of this report or this website.

The information contained in Quanta’s 2022 Sustainability Report and on this website has not been audited by any independent auditor. The information contained in the report and on this website is prepared as a reference tool, and Quanta may elect to modify the format or discontinue publication of such information at any time without notice.