Exhibit 12(d) Mississippi Power and Light Company Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Combined Fixed Charges and Preferred Dividends Twelve Months Ended December 31, 1990 1991 1992 1993 1994 Fixed charges, as defined: Interest on long-term debt $59,675 $59,440 $56,646 $48,029 $42,265 Interest on long-term debt - other 4,300 4,188 4,063 4,070 3,816 Interest on notes payable 1,512 953 36 7 1,348 Other interest charges 1,494 1,444 1,636 1,795 3,581 Amortization of expense and premium on debt-net(cr) 1,737 1,617 1,685 1,458 1,754 Interest applicable to rentals 596 574 521 1,264 1,716 ----------------------------------------------- Total fixed charges, as defined 69,314 68,216 64,587 56,623 54,480 Preferred dividends, as defined (a) 17,584 14,962 12,823 12,990 9,447 ----------------------------------------------- Combined fixed charges and preferred dividends, as defined $86,898 $83,178 $77,410 $69,613 $63,927 =============================================== Earnings as defined: Net Income $60,830 $63,088 $65,036 $101,743 $48,779 Add: Provision for income taxes: Federal and State 4,027 (1,001) 4,463 54,418 46,884 Deferred Federal and State - net 35,721 32,491 20,430 539 (26,763) Investment tax credit adjustment - net (1,835) (1,634) (1,746) 1,036 (7,645) Fixed charges as above 69,314 68,216 64,587 56,623 54,480 ------------------------------------------------ Total earnings, as defined $168,057 $161,160 $152,770 $214,359 $115,735 ================================================ Ratio of earnings to fixed charges, as defined 2.42 2.36 2.37 3.79 2.12 ================================================ Ratio of earnings to combined fixed charges and preferred dividends, as defined 1.93 1.94 1.97 3.08 1.81 ================================================ ------------------------ (a) "Preferred dividends," as defined by SEC regulation S-K, are computed by dividing the preferred dividend requirement by one hundred percent (100%) minus the income tax rate.