EXHIBIT 12(a) HAWAIIAN ELECTRIC COMPANY, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES YEAR ENDED DECEMBER 31, 1996, 1995, 1994, 1993 AND 1992 1996 1995 1994 1993 1992 ---- ---- ---- ---- ---- (DOLLARS IN THOUSANDS) FIXED CHARGES Total interest charges ............. $ 47,451 $ 44,377 $ 37,340 $ 35,287 $ 33,011 Interest component of rentals ...... 690 672 808 970 1,070 Pretax preferred stock dividend requirements of subsidiaries ...... 4,358 4,494 4,651 3,425 3,117 --------- --------- --------- --------- --------- TOTAL FIXED CHARGES ................ $ 52,499 $ 49,543 $ 42,799 $39,682 $ 37,198 ========= ========= ========= ======= ========= EARNINGS Income before preferred stock dividends of HECO ................. $ 85,213 $ 77,023 $ 65,961 $ 56,126 $ 53,678 Fixed charges, as shown ............ 52,499 49,543 42,799 39,682 37,198 Income taxes (see note below) ...... 55,888 50,198 43,588 36,897 23,843 Allowance for borrowed funds used during construction ............... (5,862) (5,112) (4,043) (3,869) (2,095) --------- --------- --------- --------- --------- EARNINGS AVAILABLE FOR FIXED CHARGES $ 187,738 $ 171,652 $ 148,305 $ 128,836 $ 112,624 ========= ========= ========= ========= ========= RATIO OF EARNINGS TO FIXED CHARGES 3.58 3.46 3.47 3.25 3.03 ========= ========= ========= ========= ========= NOTE: Income taxes is comprised of the following Income tax expense relating to operating income for regulatory purposes ........................ $ 56,170 $ 50,719 $ 43,820 $ 37,007 $ 26,254 Income tax benefit relating to nonoperating loss ............... (282) (521) (232) (110) (2,411) --------- --------- --------- --------- --------- $ 55,888 $ 50,198 $ 43,588 $ 36,897 $ 23,843 ========= ========= ========= ========= =========