EXHIBIT 15 The Cleveland Electric Illuminating Company 76 South Main Street Akron, OH 44308 Gentlemen: We are aware that The Cleveland Electric Illuminating Company has incorporated by reference in its Registration Statements No. 33-55513 and No. 333-47651 its Form 10-Q for the quarter ended March 31, 1998, which includes our report dated May 13, 1998 covering the unaudited interim financial information contained therein. Pursuant to Regulation C of the Securities Act of 1933, that report is not considered a part of the registration statements 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, ARTHUR ANDERSEN LLP Cleveland, Ohio May 13, 1998 - 46 -