EXHIBIT 23(e)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Amendment No. 1 to Registration Statement No. 333-194310 on Form S-4/A of our reports dated February 26, 2014, relating to the consolidated financial statements of Avista Corporation, and the effectiveness of Avista Corporation’s internal control over financial reporting, appearing in the Annual Report on Form 10-K of Avista Corporation for the year ended December 31, 2013, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.

/s/ Deloitte & Touche LLP

Seattle, Washington

May 8, 2014