EXHIBIT 23 FIRSTENERGY CORP. CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports included or incorporated by reference in this Form 10-K, into FirstEnergy Corp.'s previously filed Registration Statements, File No. 333-40065, No. 333-48587, No. 333-48651, No. 333-58279, No. 333- 65409 and No. 333-75985. ARTHUR ANDERSEN LLP Cleveland, Ohio March 29, 2000