Exhibit 12(d) Mississippi Power and Light Company Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Fixed Charges and Preferred Dividends Years Ended ----------------------------------------------- December 31, 1989 1990 1991 1992 1993 ----------------------------------------------- (In Thousands, Except for Ratios) Fixed charges, as defined: Interest on long-term debt $60,995 $ 59,675 $ 59,440 $ 56,646 $ 48,029 Interest on long-term debt - other 4,325 4,300 4,188 4,063 4,070 Interest on notes payable 1,031 1,512 953 36 7 Other interest charges 1,591 1,494 1,444 1,636 1,795 Amortization of expense and premium on debt-net(cr) 1,548 1,737 1,617 1,685 1,458 Interest applicable to rentals 533 596 574 521 1,264 ----------------------------------------------- Total fixed charges, as defined 70,023 69,314 68,216 64,587 56,623 Preferred dividends, as defined (a) 2,584 17,584 14,962 12,823 12,990 ----------------------------------------------- Fixed charges and preferred dividends, as defined $72,607 $ 86,898 $ 83,178 $ 77,410 $ 69,613 =============================================== Earnings as defined: Net Income $12,419 $ 60,830 $ 63,088 $ 65,036 $101,743 Add: Provision for income taxes: Federal and State 370 4,027 (1,001) 4,463 54,418 Deferred Federal and State - net (8,636) 35,721 32,491 20,430 539 Investment tax credit adjustment - net (1,523) (1,835) (1,634) (1,746) 1,036 Fixed charges as above 70,023 69,314 68,216 64,587 56,623 ----------------------------------------------- Total earnings, as defined $72,653 $168,057 $161,160 $152,770 $214,359 =============================================== Ratio of earnings to fixed charges, as defined 1.04 2.42 2.36 2.37 3.79 ============================================== Ratio of earnings to fixed charges and preferred dividends, as defined 1.00 1.93 1.94 1.97 3.08 ============================================== - ------------------------ (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. (b) Earnings for the twelve months ended December 31, 1989 include the impact of the write-off of $60 million of deferred Grand Gulf 1 - related costs pursuant to an agreement between MP&L and the MPSC.