Exhibit 23.1

We consent to the incorporation by reference in Registration Statement Nos. 333-180897 and 333-197017 on Form S-3; and in Registration Statement Nos. 333-143432, 333-182427 and 333-157151 on Form S-8 of our report dated February 20, 2015, relating to the consolidated financial statements and financial statement schedules of Pinnacle West Capital Corporation, and the effectiveness of Pinnacle West Capital Corporation’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of Pinnacle West Capital Corporation for the year ended December 31, 2014.