EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS ----------------------------------------- As independent public accounts, we hereby consent to the incorporation of our report dated May 29, 1998 included in this Form 11-K into Yankee Energy System, Inc. 401(k) Employee Stock Ownership Plan's previously filed Registration Statement File No. 33-52077. /s/ Arthur Andersen LLP Hartford, Connecticut June 26, 1998