Exhibit (23)-1 Commonwealth Edison Company Form S-4 File No. 333- CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS ----------------------------------------- As independent public accountants, we hereby consent to the incorporation by reference in this Form S-4 Registration Statement of our reports dated January 31, 1997, included or incorporated by reference in Commonwealth Edison Company's Annual Report on Form 10-K for the year ended December 31, 1996, our report dated May 9, 1997, included in Commonwealth Edison Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 1997, and our report dated January 31, 1997 included in Commonwealth Edison Company's Current Report on Form 8-K dated January 31, 1997. We also hereby consent to all references to our Firm included in this Form S-4 Registration Statement. ARTHUR ANDERSEN LLP Chicago, Illinois June 3, 1997