Southwestern Electric Power Company Exhibit 12(b) Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividend Requirements Year Ended December 31, - -------------------------------------------------------------------------- 1996 1995 1994 1993 1992 - --------------------------------------------------------------------------- (thousands, except for ratios) Operating Income $138,083 $162,776 $145,922 $118,057 $145,727 Adjustments: Federal income taxes 32,931 41,131 20,622 37,108 31,478 Provision for deferred income taxes 258,499 6,287 22,248 (648) 10,258 Deferred investment tax credits (4,730) (4,786) (4,278) (5,193) (6,864) Utility Plant development costs, net of tax (21,815) - - - - Other income and deductions 312 178 4,656 3,658 537 Allowance for borrowed and equity funds used during construction 2,423 9,334 6,097 2,580 182 Interest portion of financing leases 1,514 1,896 2,562 2,534 2,783 - --------------------------------------------------------------------------- Earnings $151,567 $216,816 $197,829 $158,096 $184,101 =========================================================================== Fixed Charges: Interest on long-term debt $44,066 $44,468 $43,395 $40,958 $47,490 Interest on short-term debt and other 8,381 10,706 7,568 4,866 4,073 Interest portion of financing leases 1,514 1,896 2,562 2,534 2,783 Preferred stock dividend requirements 4,211 4,425 4,588 4,858 4,711 - --------------------------------------------------------------------------- $58,172 $61,495 $58,113 $53,216 $59,057 =========================================================================== Ratio of earnings to combined fixed charges and preferred stock dividend requirements 2.61 3.53 3.40 2.97 3.12