Exhibit 12 SOUTH CAROLINA ELECTRIC & GAS COMPANY CALCULATION OF BOND RATIO FOR THE YEAR ENDED DECEMBER 31, 1997 (Millions of Dollars) Net earnings(1) $399.8 Divide by annualized interest charges on: Bonds authenticated under the Company's First and Refunding Mortgage Bond Indenture $35.4 Other indebtedness(1) $57.2 Total annualized interest charges $92.6 Bond ratio 4.32 (1) As defined under the Company's First and Refunding Mortgage Bond Indenture (Old Mortgage). 295 SOUTH CAROLINA ELECTRIC & GAS COMPANY CALCULATION OF NEW BOND RATIO FOR THE YEAR ENDED DECEMBER 31, 1997 (Millions of Dollars) Net earnings(1) $543.6 Divide by annualized interest charges on: Bonds authenticated under the Company's First Mortgage Bond Indenture $57.2 Other indebtedness(1) $35.4 Total annualized interest charges $92.6 New Bond Ratio 5.87 (1) As defined under the Company's Collateral Trust Mortgage Indenture (New Mortgage). 296 SOUTH CAROLINA ELECTRIC & GAS COMPANY CALCULATION OF PREFERRED STOCK RATIO FOR THE YEAR ENDED DECEMBER 31, 1997 (Millions of Dollars) Net Earnings (1) $285.2 Divide by annualized interest charges on: Bonds authenticated under the Company's mortgage bond indentures $92.6 Other indebtedness(1) $ 2.0 Preferred Dividend Requirements $11.3 Total annualized interest charges $105.9 Preferred stock ratio 2.69 (1) As defined under the Company's Restated Articles of Incorporation. 297 SOUTH CAROLINA ELECTRIC & GAS COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES For Each of the Five Years Ended December 31, 1997 (Millions of Dollars) Year Ended December 31, 1997 1996 1995 1994 1993 Fixed Charges as defined: Interest on long-term debt.................. $ 94.7 $ 94.8 $ 96.2 $ 85.4 $ 78.0 Amortization of debt premium, discount and expense (net).............................. 2.3 2.3 2.2 2.0 1.5 Interest on debt to affiliate............... - - - - - Other interest expense...................... 4.9 7.4 9.2 5.1 5.8 Interest component of rentals............... 1.8 2.3 2.8 2.7 2.8 Total Fixed Charges (A)................. $103.7 $106.8 $110.4 $ 95.2 $ 88.1 Earnings, as defined: Income...................................... $194.7 $190.5 $169.2 $152.0 $146.0 Income taxes................................ 100.6 108.1 97.3 82.7 80.7 Total fixed charges above................... 103.7 106.8 110.4 95.2 88.1 Total Earnings (B)...................... $399.0 $405.4 $376.9 $329.9 $314.8 Ratio of Earnings to fixed charges (B/A)...... 3.85 3.80 3.41 3.46 3.57 298