We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-174374 and 333-193616) and Form S-3 (No. 333-216696 and 333-221869) of Quanta Services, Inc. of our report dated February 28, 2018 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.