Filed Pursuant to Rule 424(b)(5) Registration No. 33-50099 PROSPECTUS SUPPLEMENT (To Prospectus dated November 22, 1993 and Prospectus Supplement dated December 21, 1993) EASTERN UTILITIES ASSOCIATES 1,500,000 Common Shares ($5 Par Value) This Prospectus Supplement relates to the Prospectus dated November 22, 1993 prepared for use in connection with the continuing program of acquisitions by EUA Cogenex Corporation ("EUA Cogenex"), a wholly-owned subsidiary of Eastern Utilities Associates ("EUA"). Such Prospectus provides for the exchange by EUA of up to 1,500,000 Common Shares of EUA for shares of capital stock, partnership interest or other assets representing an interest, direct or indirect, in other companies or other entities which EUA Cogenex may acquire. Such Prospectus also provides for the resale of Common Shares received by affiliates of a company acquired by EUA Cogenex. James L. Day, Co. ("Day Co."), a New York corporation, was acquired by EUA Cogenex on December 20, 1993 through a merger of Day Co. with and into EUA Cogenex and pursuant to which the shareholders of Day Co. received Common Shares of EUA in exchange for the outstanding capital stock of Day Co. William J. Pratt, a former affiliate of Day Co. residing at 11 Bromley Road, Pittsford, New York 14534, disclosed in a Prospectus Supplement dated December 21, 1993 his intent to sell from time to time up to 13,200 EUA Common Shares. He shall hereby sell from time to time up to 4,800 additional EUA Common Shares. The resales shall be made directly to investors or through a securities firm acting as an underwriter, broker or dealer. The manner of resale is more fully described in the Prospectus under the heading "OFFERED SECURITIES". THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. _______________ The date of this Prospectus Supplement is May 18, 1994