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, 1990 1991 1992 1993 1994 1995 Fixed charges, as defined: Interest on long-term debt $230,644 $218,538 $196,618 $184,818 $162,517 $144,125 Interest on notes payable 0 0 0 0 88 172 Amortization of expense and premium on debt-net 10,532 7,495 6,417 4,520 6,731 6,188 Interest applicable to rentals 13,830 10,007 6,265 6,790 7,546 5,982 Other interest charges 1,460 3,617 1,506 1,600 7,168 12,304 --------------------------------------------------------------- Total fixed charges, as defined $256,466 $239,657 $210,806 $197,728 $184,050 $168,771 =============================================================== Earnings as defined: Net Income $168,677 $104,622 $130,141 $93,927 $5,407 $3,445 Add: Provision for income taxes: Federal and State 4,620 (26,848) 35,082 48,314 67,477 95,297 Deferred Federal and State - net 52,962 37,168 23,648 60,690 (27,374) (55,287) Investment tax credit adjustment - net 56,320 63,256 30,123 (30,452) (3,265) (3,265) Fixed charges as above 256,466 239,657 210,806 197,728 184,050 168,771 --------------------------------------------------------------- Total earnings, as defined $539,045 $417,855 $429,800 $370,207 $226,295 $208,961 =============================================================== Ratio of earnings to fixed charges, as defined 2.10 1.74 2.04 1.87 1.23 1.24 ===============================================================