EX-23 7 c75523exv23.txt CONSENT OF DELOITTE & TOUCHE LLP EXHIBIT 23 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement Nos. 333-90952 and 333-11145 on Form S-3 and 333-25261, 333-73041, 333-73075 on Form S-8 of Otter Tail Corporation of our report dated January 29, 2003 (which expresses an unqualified opinion and includes an explanatory paragraph relating to the change in method of accounting for goodwill and other intangible assets as described in Note 1) appearing in the 2002 Annual Report to Shareholders of Otter Tail Corporation and incorporated by reference in this Annual Report on Form 10-K of Otter Tail Corporation for the year ended December 31, 2002. /s/ Deloitte & Touche LLP Minneapolis, Minnesota March 24, 2003