Exhibit 23.01

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-208609, 333-202633) and Form S-8 (Nos. 333-200835, 333-185354, 333-168731, 333-155581, 333-106762) of Southwest Gas Corporation of our report dated February 25, 2016 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in the Annual Report to Shareholders, which is incorporated in this Annual Report on Form 10-K. We also consent to the incorporation by reference of our report dated February 25, 2016 relating to the financial statement schedules, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Las Vegas, Nevada

February 25, 2016