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 June 1993 1994 1995 1996 1997 1998 Fixed charges, as defined: Total Interest 55,359 52,764 51,635 48,007 45,274 43,159 Interest applicable to rentals 1,264 1,716 2,173 2,165 1,947 1,936 ----------------------------------------------------------- Total fixed charges, as defined 56,623 54,480 53,808 50,172 47,221 45,095 Preferred dividends, as defined (a) 12,990 9,447 9,004 7,610 5,123 4,709 ----------------------------------------------------------- Combined fixed charges and preferred dividends, as defined $69,613 $63,927 $62,812 $57,782 $52,344 $49,804 ========================================================== Earnings as defined: Net Income $101,743 $48,779 $68,667 $79,210 66,661 73,616 Add: Provision for income taxes: Total income taxes 55,993 12,476 34,877 41,107 26,744 31,820 Fixed charges as above 56,623 54,480 53,808 50,172 47,221 45,095 ----------------------------------------------------------- Total earnings, as defined $214,359 $115,735 $157,352 $170,489 $140,626 $150,531 =========================================================== Ratio of earnings to fixed charges, as defined 3.79 2.12 2.92 3.40 2.98 3.34 =========================================================== Ratio of earnings to combined fixed charges and preferred dividends, as defined 3.08 1.81 2.51 2.95 2.69 3.02 =========================================================== - ------------------------ (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.