Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated February 27, 2008, relating to the financial statements and financial statement schedule of Black Hills Corporation (which report on the consolidated financial statements expresses an unqualified opinion and includes an explanatory paragraph regarding adoption of new accounting standards), and the effectiveness of Black Hills Corporation’s internal control over financial reporting, appearing in the Annual Report on Form 10-K of Black Hills Corporation for the year ended December 31, 2007, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
| /s/ Deloitte & Touche LLP |
Minneapolis, MN
May 2, 2008 |
