EXHIBIT 12.1 SAN DIEGO GAS & ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS (Dollars in thousands) 1994 1995 1996 1997 1998* 1998** -------- -------- -------- -------- --------- ---------- Fixed Charges: Interest: Long-Term Debt $ 81,749 $ 82,591 $ 76,463 $ 69,546 $ 54,664 $ 54,664 Short-Term Debt 8,894 17,886 12,635 13,825 12,933 12,933 Rate Reduction Bonds -- -- -- -- -- 40,912 Amortization of Debt Discount and Expense, Less Premium 4,604 4,870 4,881 5,154 7,749 7,749 Interest Portion of Annual Rentals 9,496 9,631 8,446 9,496 8,250 8,250 -------- -------- -------- -------- --------- ---------- Total Fixed Charges 104,743 114,978 102,425 98,021 83,596 124,508 -------- -------- -------- -------- --------- ---------- Preferred Dividends Requirements 7,663 7,663 6,582 6,582 6,582 6,582 Ratio of Income Before Tax to Net Income 1.83501 1.78991 1.88864 1.91993 1.73993 1.73993 -------- -------- -------- -------- --------- ---------- Preferred Dividends for Purpose of Ratio 14,062 13,716 12,431 12,637 11,452 11,452 -------- -------- -------- -------- --------- ---------- Total Fixed Charges and Preferred Dividends for Purpose of Ratio $118,805 $128,694 $114,856 $110,658 $ 95,048 $135,960 ======== ======== ======== ======== ========= ========== Earnings: Net Income (before preferred dividend requirements) $206,296 $219,049 $222,765 $238,232 $191,204 $191,204 Add: Fixed Charges (from above) 104,743 114,978 102,425 98,021 83,596 124,508 Less: Fixed Charges Capitalized 1,424 2,040 1,495 2,052 846 846 Taxes on Income 172,259 173,029 197,958 219,156 141,477 141,477 -------- -------- -------- -------- --------- ---------- Total Earnings for Purpose of Ratio $481,874 $505,016 $521,653 $553,357 $415,431 $456,343 ======== ======== ======== ======== ========= ========== Ratio of Earnings to Combined Fixed Charges and Preferred Dividends 4.06 3.92 4.54 5.00 4.37 3.36 ======== ======== ======== ======== ========= ========== * Not including interest for rate reduction bonds. ** Including interest for rate reduction bonds.