EXHIBIT 12.1 SAN DIEGO GAS & ELECTRIC COMPANY COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS Three Months Ended 1989 1990 1991 1992 1993 3/31/94 ---------- ---------- ---------- ---------- ---------- ------------ (Unaudited) Fixed Charges: Interest: Long-Term Debt $ 87,962 $ 97,894 $ 98,802 $100,776 $ 93,402 $ 22,644 Short-Term Debt 13,984 12,301 8,234 6,242 7,980 1,849 Amortization of Debt Discount and Expense, Less Premium 2,420 2,465 2,471 2,881 4,162 1,132 Interest Portion of Annual Rentals 23,664 20,898 18,067 14,677 19,206 5,599 ---------- ---------- ---------- ----------- ---------- ---------- Total Fixed Charges 128,030 133,558 127,574 124,576 124,750 31,224 ---------- ---------- ---------- ----------- ---------- ---------- Preferred Dividends Requirements 11,202 10,863 10,535 9,600 8,565 1,916 Ratio of Income Before Tax to Net Income 1.79480 1.75499 1.63017 1.72369 1.67794 1.79729 ---------- ---------- ---------- ----------- ---------- ---------- Preferred Dividends for Purpose of Ratio 20,105 19,064 17,174 16,547 14,372 3,444 ---------- ---------- ---------- ---------- ---------- ---------- Total Fixed Charges and Preferred Dividends for Purpose of Ratio $148,135 $152,622 $144,748 $141,123 $139,122 $ 34,668 ========== ========== ========== ========== ========== ========== Earnings: Net Income (before preferred dividend requirements) $179,434 $207,841 $208,060 $210,657 $218,715 $ 59,796 Add: Fixed Charges (from above) 128,030 133,558 127,574 124,576 124,750 31,224 Less: Fixed Charges Capitalized 3,481 3,306 2,907 2,242 5,789 1,688 Taxes on Income 142,614 156,917 131,114 152,451 148,275 47,675 ---------- ---------- ---------- ---------- ---------- ----------- Total Earnings for Purpose of Ratio $446,597 $495,010 $463,841 $485,442 $485,951 $137,007 ========== ========== ========== ========== ========== =========== Ratio of Earnings to Combined Fixed Charges and Preferred Dividends 3.01 3.24 3.20 3.44 3.49 3.95 ========== ========== ========== ========== ========== ==========