Exhibit No. 12(a)


                CONSTELLATION ENERGY GROUP, INC. AND SUBSIDIARIES
                COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES




                                                                              12 Months Ended
                                             ---------------------------------------------------------------------------------------
                                                  June        December      December       December      December       December
                                                  2002          2001          2000           1999          1998           1997
                                               -----------  ------------  ------------   ------------  ------------   ------------
                                                                           (In Millions of Dollars)
                                                                                                    
Income from Continuing Operations
   (Before Extraordinary Loss and
   Cumulative Effect of Change in
   Accounting Principle)                       $  213.5     $    82.4     $   345.3      $   326.4     $   305.9      $   254.1
Taxes on Income, Including Tax Effect for
      BGE Preference Stock Dividends              103.8          29.7         221.4          182.5         169.3          145.1
                                               -----------  ------------  ------------   ------------  ------------   ------------
Adjusted Income                                $  317.3     $   112.1     $   566.7      $   508.9     $   475.2      $   399.2
                                               -----------  ------------  ------------   ------------  ------------   ------------
Fixed Charges:
      Interest and Amortization of
          Debt Discount and Expense and
          Premium on all Indebtedness          $  226.4     $   226.1     $   261.5      $   245.7     $   255.3      $   234.2
      Earnings Required for BGE Preference
          Stock Dividends                          21.4          21.4          21.9           21.0          33.8           45.1
      Capitalized Interest                         53.7          55.8          21.1            2.7           3.6            8.4
      Interest Factor in Rentals                    2.1           2.0           2.2            1.8           1.9            1.9
                                               -----------  ------------  ------------   ------------  ------------   ------------
      Total Fixed Charges                      $  303.6     $   305.3     $   306.7      $   271.2     $   294.6      $   289.6
                                               -----------  ------------  ------------   ------------  ------------   ------------


Earnings (1)                                   $  567.2     $   361.6     $   852.3      $    777.4    $   766.2      $   680.4
                                               ===========  ============  ============   ============  ============   ============


Ratio of Earnings to Fixed Charges                 1.87          1.18          2.78           2.87          2.60           2.35




(1)   Earnings are deemed to consist of income from continuing operations
      (before extraordinary loss and cumulative effect of change in accounting
      principle) that includes earnings of Constellation Energy's consolidated
      subsidiaries, equity in the net income of unconsolidated subsidiaries,
      income taxes (including deferred income taxes, investment tax credit
      adjustments, and the tax effect of BGE's preference stock dividends), and
      fixed charges other than capitalized interest.