Exhibit 99 (f) System Energy Resources, Inc. Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Fixed Charges Twelve Months Ended December 31, September 30, 1989 1990 1991 1992 1993 1994 (In Thousands, Except for Ratios) Fixed charges, as defined: Interest on mortgage bonds $148,402 $138,689 $126,351 $104,429 $91,472 $84,857 Interest on other long-term debt 91,295 91,955 92,187 92,189 93,346 85,735 Interest on lease nuclear 18,298 13,830 10,007 6,265 6,790 7,321 Interest on notes payable 0 0 0 0 0 46 Amortization of expense and premium on debt-net 7,326 10,532 7,495 6,417 4,520 6,300 Other interest charges 2,790 1,460 3,617 1,506 1,600 1,934 ------------------------------------------------------------------- Total fixed charges, as defined $268,111 $256,466 $239,657 $210,806 $197,728 $186,193 =================================================================== Earnings as defined: Net Income ($655,524) $168,677 $104,622 $130,141 $93,927 $89,529 Add: Provision for income taxes: Federal and State (168,440) 4,620 (26,848) 35,082 48,314 67,039 Deferred Federal and State - net 93,048 52,962 37,168 23,648 60,690 46,231 Investment tax credit adjustment - net (14,321) 56,320 63,256 30,123 (30,452) (30,240) Fixed charges as above 268,111 256,466 239,657 210,806 197,728 186,193 -------------------------------------------------------------------- Total earnings, as defined ($477,126) $539,045 $417,855 $429,800 $370,207 $358,752 ==================================================================== Ratio of earnings to fixed charges, as defined (a) 2.10 1.74 2.04 1.87 1.93 ==================================================================== - ------------------------ (a) Earnings for the twelve months ended December 31, 1989 were inadequate to cover fixed charges due to System Energy's cancellation and write-off of its investment in Grand Gulf 2 in September 1989. The amount of the coverage deficiency for fixed charges was $745.2 million.