EXHIBIT 23.1 ------------ CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS ---------------------------------------- As independent public accountants, we hereby consent to the incorporation by reference in this Registration Statement of our reports dated February 5, 1999 included in the Annual Report on Form 10-K for NIPSCO Industries, Inc. for the year ended December 31, 1998; and our report dated February 5, 1999 included in the Current Report on Form 8-K for NIPSCO Industries, Inc. dated February 8, 1999 and to all references to our Firm included in this Registration Statement. /s/ Arthur Andersen LLP -------------------------------------------- ARTHUR ANDERSEN LLP Chicago, Illinois April 15, 1999