EXHIBIT 12.1 CENTRAL POWER AND LIGHT COMPANY (CONSOLIDATED) RATIO OF EARNINGS TO FIXED CHARGES FOR THE TWELVE MONTHS ENDED MARCH 31, 1998 (Thousands Except Ratio) (Unaudited) Operating Income $267,543 Adjustments: Income taxes 60,611 Provision for deferred income taxes 27,972 Deferred investment tax credits (4,674) Other income and deductions 16,065 Allowance for borrowed and equity funds used during construction 4,458 --------- Earnings $371,975 ========= Fixed Charges: Interest on long-term debt $101,606 Interest on short-term debt and other 29,889 Distributions on Trust Preferred Securities 10,533 --------- Fixed Charges $142,028 ========= Ratio of Earnings to Fixed Charges 2.62 =========