EXHIBIT 99.0 WASHINGTON GAS LIGHT COMPANY AND SUBSIDIARIES --------------------------------------------- Computation of Ratio of Earnings to Fixed Charges ------------------------------------------------- Twelve Months Ended March 31, 1998 ---------------------------------- (Unaudited) (Dollars in Thousands) FIXED CHARGES: Interest Expense $ 34,787 Amortization of Debt Premium, Discount and Expense 330 Interest Component of Rentals 10 --------- Total Fixed Charges $ 35,127 ========= EARNINGS: Net Income $ 77,304 Add: Income Taxes Applicable to Operating Income 45,162 Income Taxes Applicable to Other Income - Net (89) Total Fixed Charges 35,127 --------- Total Earnings $ 157,504 ========= Ratio of Earnings to Fixed Charges 4.5 =========