Exhibit 99(d) Entergy Mississippi, Inc. Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Combined Fixed Charges and Preferred Dividends 1994 1995 1996 1997 1998 1999 Fixed charges, as defined: Total Interest $52,764 $51,635 $48,007 $45,274 $40,927 $38,840 Interest applicable to rentals 1,716 2,173 2,165 1,947 1,864 2,261 ----------------------------------------------------------- Total fixed charges, as defined 54,480 53,808 50,172 47,221 42,791 41,101 Preferred dividends, as defined (a) 9,447 9,004 7,610 5,123 4,878 4,878 ----------------------------------------------------------- Combined fixed charges and preferred dividends, as defined $63,927 $62,812 $57,782 $52,344 $47,669 $45,979 =========================================================== Earnings as defined: Net Income $48,779 $68,667 $79,210 $66,661 $62,638 $41,588 Add: Provision for income taxes: Total income taxes 12,476 34,877 41,107 26,744 28,031 17,537 Fixed charges as above 54,480 53,808 50,172 47,221 42,791 41,101 ----------------------------------------------------------- Total earnings, as defined $115,735 $157,352 $170,489 $140,626 $133,460 $100,226 =========================================================== Ratio of earnings to fixed charges, as defined 2.12 2.92 3.40 2.98 3.12 2.44 =========================================================== Ratio of earnings to combined fixed charges and preferred dividends, as defined 1.81 2.51 2.95 2.69 2.80 2.18 =========================================================== - ------------------------ (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.