Exhibit 12.1 Central Power and Light Company Consolidated Ratio of Earnings to Fixed Charges For Years Ended December 31, 1998 1997 1996 1995 1994 --------------------------------------------------- (thousands, except ratios) Operating income $282,926 $251,367 $285,647 $282,184 $256,251 Adjustments Income taxes 126,738 39,329 47,227 51,755 51,329 Provision for deferred income taxes (8,253) 34,484 51,476 (30,025) 26,659 Deferred investment tax credits (3,858) (4,819) (5,553) (5,789) (5,789) Charges for investments and plant development costs, net of tax -- (1,281) (15,569) -- -- Other income and deductions 709 7,834 3,997 14,880 1,272 Allowance for borrowed and equity funds used during construction 2,822 3,778 1,845 4,514 3,689 Mirror CWIP amortization -- -- -- 41,000 68,000 --------------------------------------------------- Earnings $401,084 $330,692 $369,070 $358,519 $401,411 =================================================== Fixed charges: Interest on long-term debt $93,301 $105,081 $110,375 $116,205 $111,408 Interest on short-term debt 19,506 20,613 18,494 19,926 12,365 Distributions on Trust Preferred Securities 12,000 7,533 -- -- -- =================================================== Fixed Charges $124,807 $133,227 $128,869 $136,131 $123,773 =================================================== Ratio of earnings to fixed charges 3.21 2.48 2.86 2.63 3.24 4-14