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, March 31, 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 $89,777 Interest on other long-term debt 91,295 91,955 92,187 92,189 93,346 89,856 Interest on lease nuclear 18,298 13,830 10,007 6,265 6,790 6,875 Interest on notes payable -- -- -- -- -- 13 Amortization of expense and premium on debt-net 7,326 10,532 7,495 6,417 4,520 3,920 Other interest charges 2,790 1,460 3,617 1,506 1,600 2,061 Total fixed charges, as defined $268,111 $256,466 $239,657 $210,806 $197,728 $192,502 Earnings as defined: Net Income ($655,524) $168,677 $104,622 $130,141 $93,927 $83,694 Add: Provision for income taxes: Federal and State (168,440) 4,620 (26,848) 35,082 48,314 62,960 Deferred Federal and State - net 93,048 52,962 37,168 23,648 60,690 45,972 Investment tax credit adjustment - net (14,321) 56,320 63,256 30,123 (30,452) (30,381) Fixed charges as above 268,111 256,466 239,657 210,806 197,728 192,502 Total earnings, as defined ($477,126) $539,045 $417,855 $429,800 $370,207 $354,747 Ratio of earnings to fixed charges, as defined (a) 2.10 1.74 2.04 1.87 1.84 - ------------------------ (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.