1 EXHIBIT 12.1 WASHINGTON GAS LIGHT COMPANY AND SUBSIDIARIES Computation of Ratio of Earnings to Fixed Charges and Preferred Stock Dividends Years Ended September 30 (Dollars in Thousands) 1997 1996 1995 1994 1993 --------- --------- --------- --------- --------- FIXED CHARGES AND PRE-TAX PREFERRED STOCK DIVIDENDS Preferred Dividends $ 1,331 $ 1,332 $ 1,333 $ 1,335 $ 1,336 Effective Income Tax Rate .3713 .3740 .3690 .3834 .3755 Complement of Effective Income Tax Rate (1 - Tax Rate) .6287 .6260 .6310 .6166 .6245 Pre-tax Preferred Dividends $ 2,117 $ 2,128 $ 2,113 $ 2,165 $ 2,139 ========= ========= ========= ========= ========= Interest Expense $ 33,599 $ 29,876 $ 30,932 $ 30,899 $ 27,872 Amortization of Debt Premium, Discount and Expense 299 256 315 367 410 Interest Component of Rentals 17 96 56 34 94 --------- --------- --------- --------- --------- Total Fixed Charges 33,915 30,228 31,303 31,300 28,376 Pre-tax Preferred Dividends 2,117 2,128 2,113 2,165 2,139 --------- --------- --------- --------- --------- Total $ 36,032 $ 32,356 $ 33,416 $ 33,465 $ 30,515 ========= ========= ========= ========= ========= EARNINGS: Net Income $ 82,019 $ 81,591 $ 62,909 $ 60,459 $ 55,079 Add: Income Taxes Applicable to Operating Income 47,864 49,376 37,514 37,264 34,601 Income Taxes Applicable to Other Income (Loss) - Net 577 (629) (730) 326 (1,479) Total Fixed Charges 33,915 30,228 31,303 31,300 28,376 --------- --------- --------- --------- --------- Total Earnings $ 164,375 $ 160,566 $ 130,996 $ 129,349 $ 116,577 ========= ========= ========= ========= ========= Ratio of Earnings to Fixed Charges and Preferred Stock Dividends 4.6 5.0 3.9 3.9 3.8 ========= ========= ========= ========= =========