Exhibit 12-A Delmarva Power & Light Company Ratio of Earnings to Fixed Charges ---------------------------------- (Dollars in Thousands) --------------------- 12 Months Ended March 31, Year Ended December 31, ------------------------------------------------------------------------- 1998 1997 1996 1995 1994 1993 ------------------ ------------- ------------- ------------- ------------- ------------- Net income $75,060 $105,709 $116,187 $117,488 $108,310 $111,076 ------------------ ------------- ------------- ------------- ------------- ------------- Income taxes 51,782 72,155 78,340 75,540 67,613 67,102 ------------------ ------------- ------------- ------------- ------------- ------------- Fixed charges: Interest on long-term debt including amortization of discount, premium and expense 79,587 78,350 69,329 65,572 61,128 62,651 Other interest 12,562 12,835 12,516 10,353 9,336 9,245 Preferred dividend require- ments of a subsidiary trust 5,687 5,687 1,390 - - - ------------------ ------------- ------------- ------------- ------------- ------------- Total fixed charges 97,836 96,872 83,235 75,925 70,464 71,896 ------------------ ------------- ------------- ------------- ------------- ------------- Nonutility capitalized interest (132) (208) (311) (304) (256) (246) ------------------ ------------- ------------- ------------- ------------- ------------- Earnings before income taxes and fixed charges $224,546 $274,528 $277,451 $268,649 $246,131 $249,828 ================= ============ ============ ============ ============ ============ Ratio of earnings to fixed charges 2.30 2.83 3.33 3.54 3.49 3.47 For purposes of computing the ratio, earnings are net income plus income taxes and fixed charges, less nonutility capitalized interest. Fixed charges consist of interest on long- and short-term debt, amortization of debt discount, premium, and expense, dividends on preferred securities of a subsidiary trust, plus the interest factor associated with the Company's major leases, and one- third of the remaining annual rentals. -18-