EXHIBIT 24(A) POWER OF ATTORNEY KNOW ALL PEOPLE BY THESE PRESENTS that the undersigned, HAWAIIAN ELECTRIC COMPANY, INC., a Hawaii corporation ("HECO"), and the officers and directors of said corporation whose names are signed hereto, hereby constitute and appoint T. MICHAEL MAY, PAUL A. OYER, MARVIN A. HAWTHORNE, LORIE ANN NAGATA, DAVID J. REBER and GREGORY R. KIM of Honolulu, Hawaii, and each of them, with full power of substitution in the premises (with full power to each of them to act alone), their true and lawful attorneys and agents, and in its and their name, place and stead, to do any and all acts and things and to execute and deliver any and all instruments and documents which said attorneys and agents or any of them may deem necessary or advisable to be done to enable HECO to comply with the Securities Act of 1933, as amended (the "Securities Act") and with the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any rules, regulations or requirements of the Securities and Exchange Commission in respect thereof and/or to comply with the requirements of any other state regulatory authority, all in connection with the registration under said Act on Form S-3, of up to 2,000,000 of Trust Preferred Securities with a liquidation preference of $25 per Preferred Security, to be issued by HECO Capital Trust II for the benefit of the Company and its subsidiaries, Hawaiian Electric Light Company, Inc. ("HELCO") and Maui Company, Limited ("MECO"), and the related HECO Guarantees and underlying debt securities of HECO, MECO and HELCO, including specifically but without limiting the generality of the foregoing, power and authority to sign the name of Hawaiian Electric Company, Inc., and the names of the undersigned officers and directors thereof, in the capacities indicated below, to a registration statement to be filed with the Securities and Exchange Commission in respect of the aforementioned securities, to any and all amendments (including pre- and post-effective amendments) and supplements thereto, and each of the undersigned hereby ratifies and confirms all of the aforesaid that said attorneys and agents or any of them shall do or cause to be done by virtue hereof. IN WITNESS WHEREOF, Hawaiian Electric Company, Inc. has caused this Power of Attorney to be executed in its name by its President and its Financial Vice President and Treasurer and attested by its Secretary, and the undersigned officers and directors of Hawaiian Electric Company, Inc. have hereunto set their hands, as of the 23rd day of September, 1998. This Power of Attorney may be executed in any number of counterparts by the corporation and by any one or more of the officers and directors named below. ATTEST: HAWAIIAN ELECTRIC COMPANY, INC. /s/ Molly M. Egged /s/ T. Michael May _____________________________________ By___________________________________ Molly M. Egged T. Michael May Secretary President and Chief Executive Officer /s/ Paul A. Oyer By __________________________________ Paul A. Oyer Financial Vice President and Treasurer /s/ T. Michael May President, Principal Executive Officer - ------------------------------------- and Director T. MICHAEL MAY /s/ Paul A. Oyer Financial Vice President, Treasurer, - ------------------------------------- Principal Financial Officer and PAUL A. OYER Director /s/ Ernest T. Shiraki Controller and Principal Accounting - ------------------------------------- Officer ERNEST T. SHIRAKI /s/ Robert F. Clarke Chairman of the Board of Directors - ------------------------------------- ROBERT F. CLARKE /s/ Richard Henderson Director - ------------------------------------- RICHARD HENDERSON /s/ Diane J. Plotts Director - ------------------------------------- DIANE J. PLOTTS /s/ Anne M. Takabuki Director - ------------------------------------- ANNE M. TAKABUKI /s/ Paul C. Yuen Director - ------------------------------------- PAUL C. YUEN 2