EXHIBIT 12.1 SAN DIEGO GAS & ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS 9 Months 9 Months Ended Ended 1993 1994 1995 1996 1997 9/30/98* 9/30/98** -------- -------- -------- -------- -------- --------- ---------- Fixed Charges: Interest: Long-Term Debt $ 84,830 $ 81,749 $ 82,591 $ 76,463 $ 69,546 $ 42,106 $ 42,106 Short-Term Debt 6,676 8,894 17,886 12,635 13,825 8,366 8,366 Rate Reduction Bonds -- -- -- -- -- -- 31,388 Amortization of Debt Discount and Expense, Less Premium 4,162 4,604 4,870 4,881 5,154 6,273 6,273 Interest Portion of Annual Rentals 9,881 9,496 9,631 8,446 9,496 5,733 5,733 -------- -------- -------- -------- -------- --------- ---------- Total Fixed Charges 105,549 104,743 114,978 102,425 98,021 62,478 93,866 -------- -------- -------- -------- -------- --------- ---------- Preferred Dividends Requirements 8,565 7,663 7,663 6,582 6,582 4,937 4,937 Ratio of Income Before Tax to Net Income 1.79353 1.83501 1.78991 1.88864 1.91993 1.82473 1.82473 -------- -------- -------- -------- -------- --------- ---------- Preferred Dividends for Purpose of Ratio 15,362 14,062 13,716 12,431 12,637 9,009 9,009 -------- -------- -------- -------- -------- --------- ---------- Total Fixed Charges and Preferred Dividends for Purpose of Ratio $120,911 $118,805 $128,694 $114,856 $110,658 $ 71,487 $102,875 ======== ======== ======== ======== ======== ========= ========== Earnings: Net Income (before preferred dividend requirements) $215,872 $206,296 $219,049 $222,765 $238,232 $141,100 $141,100 Add: Fixed Charges (from above) 105,549 104,743 114,978 102,425 98,021 62,478 93,866 Less: Fixed Charges Capitalized 1,483 1,424 2,040 1,495 2,052 713 713 Taxes on Income 171,300 172,259 173,029 197,958 219,156 116,370 116,370 -------- -------- -------- -------- -------- --------- ---------- Total Earnings for Purpose of Ratio $491,238 $481,874 $505,016 $521,653 $553,357 $319,235 $350,623 ======== ======== ======== ======== ======== ========= ========== Ratio of Earnings to Combined Fixed Charges and Preferred Dividends 4.06 4.06 3.92 4.54 5.00 4.47 3.41 ======== ======== ======== ======== ======== ========= ========== * Not including interest for rate reduction bonds. ** Including interest for rate reduction bonds.