EXHIBIT 12 SOUTHERN INDIANA GAS AND ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Fiscal Year Ended December 31 Twelve Months Ended 3/31/00 1999 1998 1997 1996 1995 Earnings: Net income (Note 1) $38,527 $46,768 $43,542 $45,363 $42,841 $39,624 Income taxes 23,334 26,427 25,035 27,259 24,035 16,232 AFUDC borrowed (2,652) (2,507) (1,465) (797) (445) (621) Fixed charges 19,683 20,371 21,166 20,916 21,910 21,942 Total adjusted earnings $78,892 $91,059 $88,278 $92,741 $88,341 $77,177 Fixed Charges: Total interest expense 19,078 19,766 20,680 20,460 21,472 21,377 Interest component of rents (Note 2) 605 605 486 456 438 565 Total fixed charges 19,683 20,371 21,166 20,916 21,910 21,942 Ratio of earnings to fixed charges (Note 3) 4.0 4.5 4.2 4.4 4.0 3.5 <FN> Notes: (1) Net income is before preferred dividend requirements. (2) One-third of rentals represents a reasonable approximation of the interest factor. (3) The ratios above do not reflect the fixed charge component in SIGECO's power contract with OVEC. </FN>