EXHIBIT 12.2 ARIZONA PUBLIC SERVICE COMPANY COMPUTATION OF EARNINGS TO FIXED CHARGES (THOUSANDS OF DOLLARS) Twelve Months Ended ------------------------------------------------------------- December 31, ------------------------------------------------------------- 1998 1997 1996 1995 1994 ---- ---- ---- ---- ---- Earnings: Net Income ..................... $ 255,247 $ 251,493 $ 243,471 $ 239,570 $ 243,486 Income taxes (1) ............... 159,456 153,324 132,961 141,267 177,244 Fixed Charges .................. 188,568 195,055 203,855 214,768 213,581 --------- --------- --------- --------- --------- Total ........................ $ 603,271 $ 599,872 $ 580,287 $ 595,605 $ 634,311 ========= ========= ========= ========= ========= Fixed Charges: Interest expense ............... $ 144,695 $ 150,335 $ 158,287 $ 168,175 $ 166,045 Amortization of debt discount, premium and expense .......... 7,580 7,791 8,176 8,622 8,854 Estimated interest portion of annual rents (2) ............. 36,293 36,929 37,392 37,971 38,682 --------- --------- --------- --------- --------- Total ........................ $ 188,568 $ 195,055 $ 203,855 $ 214,768 $ 213,581 ========= ========= ========= ========= ========= Ratio of Earnings to Fixed Charges (rounded down) ................. 3.19 3.07 2.84 2.77 2.96 ========= ========= ========= ========= ========= (1) Income Taxes: Charged to operations .......... $ 192,207 $ 184,737 $ 178,513 $ 178,865 $ 168,202 Charged (credited) to other accounts ..................... (32,751) (31,413) (45,552) (37,598) 9,042 --------- --------- --------- --------- --------- Total ........................ $ 159,456 $ 153,324 $ 132,961 $ 141,267 $ 177,244 ========= ========= ========= ========= ========= (2) Estimated interest portion of Unit 2 lease payments included in estimated interest portion of annual rentals ................. $ 34,315 $ 34,720 $ 35,083 $ 35,422 $ 35,710 ========= ========= ========= ========= =========