We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 333-248776 and 333-228402) and Form S-8 (Nos. 333-231769, 333-226780, 333-193616 and 333-174374) of Quanta Services, Inc. of our report dated February 26, 2021 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.