EX-23 9 a2019ex23.htm MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement No. 333-220026 on Form S-3 and Registration Statement Nos. 333-27877, 333-114488, and 333-234760 on Form S-8 of our reports dated February 21, 2020, relating to the financial statements of MDU Resources Group, Inc., and the effectiveness of MDU Resources Group, Inc.'s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2019.
/s/ Deloitte & Touche LLP
Minneapolis, Minnesota
February 21, 2020