Exhibit 12 (a) 1 1 CENTRAL POWER AND LIGHT COMPANY RATIO OF EARNINGS TO FIXED CHARGES FOR YEARS ENDED DECEMBER 31 1994 1993 1992 1991 1990 (thousands except ratios) Operating income $256,251 $190,079 $266,665 $249,573 $162,527 Adjustments: Federal income taxes 51,329 (18,954) 34,726 42,869 (2,914) Provision for deferred federal income taxes 26,659 90,520 48,610 36,821 103,326 Deferred investment tax credits (5,789) (5,806) (5,837) (5,831) (6,103) Other income and deductions 1,272 1,663 890 2,522 (1,687) Allowance for borrowed and equity funds used during construction 3,689 2,618 1,171 2,124 1,057 STP carrying costs -- -- -- -- 185,078 Mirror CWIP amortization 68,000 75,702 82,527 96,671 -- Earnings $401,411 $335,822 $428,752 $424,749 $441,284 Fixed charges: Interest on long-term debt $111,408 $112,939 $125,476 $124,987 $126,584 Interest on short-term debt and other 12,365 11,993 7,266 8,697 15,521 Fixed Charges $123,773 $124,932 $132,742 $133,684 $142,105 Ratio of Earnings to Fixed Charges 3.24 2.69 3.23 3.18 3.11