Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Integrys Energy Group Employee Stock Ownership Plan

Milwaukee, Wisconsin

We consent to the incorporation by reference in the Registration Statement No. 333-199561 on Form S-3 of WEC Energy Group, Inc. of our report dated March 10, 2017, relating to the financial statements of Integrys Energy Group Employee Stock Ownership Plan, included in this Transition Report on Form 11-K of the Integrys Energy Group Employee Stock Ownership Plan for the period January 1, 2016 through September 14, 2016.

/s/ Schenck SC

Certified Public Accountants

Green Bay, Wisconsin

March 10, 2017