1 EXHIBIT (15) June 1, 2001 To Consumers Energy Company: We are aware that Consumers Energy Company has incorporated by reference in this registration statement its Form 10-Q for the quarter ended March 31, 2001, which includes our report dated April 27, 2001 covering the unaudited interim financial information contained therein. Pursuant to Regulation C of the Securities Act of 1933, this report is not considered a part of the registration statement prepared or certified by our Firm or a report prepared or certified by our Firm within the meaning of Sections 7 and 11 of the Act. Very truly yours, /s/Arthur Andersen LLC