EXHIBIT 12 SOUTH CAROLINA ELECTRIC & GAS COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Thousands of Dollars) 12 Months June 30, Year Ended December 31, 1997 1996 1995 1994 1993 1992 Fixed Charges as defined: Interest on long-term debt.................. $ 94,113 $ 94,834 $ 96,138 $ 85,368 $ 77,975 $ 79,452 Amortization of debt premium, discount and expense (net).............................. 2,324 2,315 2,223 1,993 1,435 765 Interest on debt to affiliate............... 23 - 114 279 29 16 Other interest expense...................... 6,661 7,367 9,210 4,910 5,783 6,761 Interest component of rentals............... 2,028 2,255 2,771 2,692 2,823 923 Total Fixed Charges (A)................. $105,149 $106,771 $110,456 $ 95,242 $ 88,045 $ 87,917 Earnings, as defined: Income...................................... $179,284 $190,482 $169,185 $152,043 $145,968 $102,163 Income taxes................................ 99,624 108,176 97,249 82,716 80,738 50,158 Total fixed charges ........................ 105,149 106,771 110,456 95,242 88,045 87,917 Total Earnings (B)...................... $384,057 $405,429 $376,890 $330,001 $314,751 $240,238 Ratio of Earnings to fixed charges (B/A)...... 3.65 3.80 3.41 3.46 3.57 2.73 309