EXHIBIT 12 THE UNION LIGHT, HEAT AND POWER COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES THREE MONTHS ENDED 12 MONTHS ENDED DECEMBER 31 MARCH 31, ------------------------------------------------------------------ 1999 1998 1997 1996 1995 1994 ----- ---- ---- ---- ---- ---- (UNAUDITED) (THOUSANDS, EXCEPT RATIOS) Earnings Available Income Before Interest Charges $8,106 $18,154 $17,685 $19,257 $19,863 $16,760 Allowance For Borrowed Funds Used During Construction - Credit 29 621 151 58 198 183 Income Taxes 4,749 7,774 8,486 10,186 7,931 5,286 Interest Component of Rents (a) 262 1,048 315 1,511 1,920 1,851 ------------------------------------------------------------------------------------ Total Available $13,146 $27,597 $26,637 $31,012 $29,912 $24,080 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Fixed Charges Interest Charges $1,592 $5,225 $4,919 $4,719 $7,889 $8,556 Interest Component of Rents (a) 262 1,048 315 1,511 1,920 1,851 ------------------------------------------------------------------------------------ Total Fixed Charges $1,854 $6,273 $5,234 $6,230 $9,809 $10,407 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Ratio of Earnings to Fixed Charges 7.09 4.40 5.09 4.98 3.05 2.31 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ - ----------------- (a) Estimated interest component of rentals (1/3 of rentals was used where no readily defined interest