Exhibit 99(a) Entergy Arkansas, Inc. Computation of Ratios of Earnings to Fixed Charges and Ratios of Earnings to Combined Fixed Charges and Preferred Dividends Sept 1993 1994 1995 1996 1997 1998 Fixed charges, as defined: Total Interest Charges 119,591 110,814 115,337 106,716 104,165 99,482 Interest applicable to rentals 16,860 19,140 18,158 19,121 17,529 16,289 ---------------------------------------------------------------- Total fixed charges, as defined 136,451 129,954 133,495 125,837 121,694 115,771 Preferred dividends, as defined (a) 30,334 23,234 27,636 24,731 16,073 15,467 ---------------------------------------------------------------- Combined fixed charges and preferred dividends, as defined $166,785 $153,188 $161,131 $150,568 $137,767 $131,238 ================================================================ Earnings as defined: Net Income $205,297 $142,263 $136,666 $157,798 $127,977 121,114 Add: Provision for income taxes: Total 82,337 29,220 72,081 84,445 59,220 60,991 Fixed charges as above 136,451 129,954 133,495 125,837 121,694 115,771 ---------------------------------------------------------------- Total earnings, as defined $424,085 $301,437 $342,242 $368,080 $308,891 $297,876 ================================================================ Ratio of earnings to fixed charges, as defined 3.11 2.32 2.56 2.93 2.54 2.57 ================================================================ Ratio of earnings to combined fixed charges and preferred dividends, as defined 2.54 1.97 2.12 2.44 2.24 2.27 ================================================================ - - - - - - - - - ------------------------ (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.