1 EXHIBIT 99.1 WASHINGTON GAS LIGHT COMPANY AND SUBSIDIARIES Computation of Ratio of Earnings to Fixed Charges and Preferred Stock Dividends Twelve Months Ended March 31, 1997 ----------------------------------------------------- (Unaudited) (Dollars in Thousands) FIXED CHARGES AND PRE-TAX PREFERRED STOCK DIVIDENDS: Interest Expense ................................................ $ 32,345 Amortization of Debt Premium, Discount and Expense .............. 284 Interest Component of Rentals ................................... 64 -------- Total Fixed Charges ....................................... 32,693 Pre-tax Preferred Dividends ..................................... 2,110 -------- Total ..................................................... $ 34,803 ======== Preferred Dividends ............................................. $ 1,332 Effective Income Tax Rate ....................................... .3686 Complement of Effective Income Tax Rate (1 - Tax Rate) .......... .6314 Pre-Tax Preferred Dividends ..................................... $ 2,110 ======== EARNINGS: Net Income ........................................................ $ 72,910 Add: Income Taxes Applicable to Operating Income .................... 41,680 Income Taxes Applicable to Other Income (Loss) - Net ........... 887 Total Fixed Charges ............................................ 32,693 -------- Total Earnings .................................................... $148,170 ======== Ratio of Earnings to Fixed Charges and Preferred Stock Dividends........................................ 4.3 ========