Exhibit 12(b) Central Power and Light Company Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividend Requirements (Unaudited) Year Ended December 31, - ------------------------------------------------------------------ 1996 1995 1994 1993 1992 - ------------------------------------------------------------------------------------ housands, except for ratios) Operating Income $285,647 $282,184 $256,251 $190,079 $266,665 Adjustments: Federal income taxes 47,227 51,755 51,329 (18,954) 34,726 Provision for deferred income taxes 51,476 (30,025) 26,659 90,520 48,610 Deferred investment tax credits (5,553) (5,789) (5,789) (5,806) (5,837) Other income and deductions (11,572) 14,880 1,272 1,663 890 Allowance for borrowed and equity funds used during construction 1,845 4,514 3,689 2,618 1,171 Mirror CWIP amortization 0 41,000 68,000 75,702 82,527 - ------------------------------------------------------------------------------------ Earnings $369,070 $358,519 $401,411 $335,822 $428,752 ====================================================================== Fixed Charges: Interest on long-term debt $110,375 $116,205 $111,408 $112,939 $125,476 Interest on short-term debt and other 18,494 19,926 12,365 11,993 7,266 Preferred stock dividend requirements 22,155 15,586 18,655 20,537 21,769 - ------------------------------------------------------------------------------------ $151,024 $151,717 $142,428 $145,469 $154,511 =========================================================================== Ratio of earnings to combined fixed charges and preferred stock dividend requirements 2.44 2.36 2.82 2.31 2.77