Exhibit

We consent to the incorporation by reference in Registration Statement Nos. 333-196561 and 333-207887 on Form S-3ASR, Registration Statement Nos. 333-76140, 333-132738, 333-166298 and 333-203124 on Form S-8, and Post-Effective Amendment No. 1 to Registration Statement No. 333-76140 on Form S-8 of our reports dated December 23, 2015, relating to the consolidated financial statements of Piedmont Natural Gas Company, Inc. and subsidiaries, and the effectiveness of Piedmont Natural Gas Company, Inc. and subsidiaries’ internal control over financial reporting, appearing in this Annual Report on Form 10-K of Piedmont Natural Gas Company, Inc. and subsidiaries for the year ended October 31, 2015.