EXHIBIT 12(b) UNION ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS 12 MONTHS YEAR ENDED DECEMBER 31, ENDED -------------------------------------------- JUNE 30, 1990 1991 1992 1993 1994 1995 -------- -------- -------- -------- -------- -------- (THOUSANDS OF DOLLARS EXCEPT RATIOS) Net income for the peri- od..................... $294,219 $321,512 $302,748 $297,160 $320,757 $299,398 Add: Taxes based on in- come............... 191,532 218,954 197,009 182,716 203,827 188,984 Fixed charges (see below)............. 188,698 168,380 136,227 130,914 142,411 145,248 -------- -------- -------- -------- -------- -------- Earnings available for fixed charges and pre- ferred stock dividend requirements of Compa- ny..................... $674,449 $708,846 $635,984 $610,790 $666,995 $633,630 ======== ======== ======== ======== ======== ======== Fixed charges: Interest on debt...... $183,215 $163,061 $125,798 $124,430 $135,608 $137,495 Amortization of pre- mium and discount, less expense, on debt; and bond defeasance cost................. 4,369 4,148 9,521 5,170 5,504 5,504 Rentals (see note).... 1,114 1,171 908 1,314 1,299 2,249 -------- -------- -------- -------- -------- -------- Total fixed charges. $188,698 $168,380 $136,227 $130,914 $142,411 $145,248 Preferred stock dividend requirements of Company *(Adjusted for income tax effect)............ 22,901 22,213 21,852 21,537 20,514 20,466 ======== ======== ======== ======== ======== ======== Total fixed charges and preferred stock dividend requirements.. $211,599 $190,593 $158,079 $152,451 $162,925 $165,714 ======== ======== ======== ======== ======== ======== Ratio of earnings to fixed charges and preferred dividends.... 3.19 3.72 4.02 4.01 4.09 3.82 ======== ======== ======== ======== ======== ======== -------- Note: Represents the interest factor applicable to rentals. * See following page for supporting computation. EXHIBIT 12(b) UNION ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES 12 MONTHS YEAR ENDED DECEMBER 31, ENDED ------------------------------------------------ JUNE 30, 1990 1991 1992 1993 1994 1995 -------- -------- -------- -------- -------- --------- (THOUSANDS OF DOLLARS EXCEPT RATIOS) Computation of preferred stock dividend requirements of Company, adjusted for income tax effect* Preferred stock dividend requirements of Company, as shown on statement of earnings............. $ 14,693 $ 14,059 $ 14,058 $ 14,087 $ 13,252 $ 13,251 Less deductible pre- ferred stock divi- dends**................ 2,085 2,085 2,085 1,973 1,816 1,816 -------- -------- -------- -------- -------- -------- Non-deductible preferred stock dividends........ $ 12,608 $ 11,974 $ 11,973 $ 12,114 $ 11,436 $ 11,435 ======== ======== ======== ======== ======== ======== Excess of net income be- fore income taxes over net income (percentage) See note below......... 65.1% 68.1% 65.1% 61.5% 63.5% 63.1% -------- -------- -------- -------- -------- -------- Income tax effect on non-deductible pre- ferred stock divi- dends*................. $ 8,208 $ 8,154 $ 7,794 $ 7,450 $ 7,262 $ 7,215 Add: Deductible preferred stock dividends (above).............. 2,085 2,085 2,085 1,973 1,816 1,816 Non-deductible pre- ferred stock divi- dends (above)........ 12,608 11,974 11,973 12,114 11,436 11,435 -------- -------- -------- -------- -------- -------- Preferred stock dividend requirements of Company, adjusted for income tax effect...... $ 22,901 $ 22,213 $ 21,852 $ 21,537 $ 20,514 $ 20,466 ======== ======== ======== ======== ======== ======== Note: Calculated as fol- lows-- Net income before in- come taxes........... $485,751 $540,466 $499,757 $479,876 $524,584 $488,382 Less net income....... 294,219 321,512 302,748 297,160 320,757 299,398 -------- -------- -------- -------- -------- -------- Excess--Taxes based on income............... $191,532 $218,954 $197,009 $182,716 $203,827 $188,984 ======== ======== ======== ======== ======== ======== -- Percentage of net income............... 65.1% 68.1% 65.1% 61.5% 63.5% 63.1% ======== ======== ======== ======== ======== ======== -------- * Income tax adjustment to reflect pretax earnings required to meet preferred stock dividend. ** Dividends deductible on federal income tax return.