1 Exhibit 12.3 Boston Edison Company Computation of Ratio of Earnings to Fixed Charges Year ended December 31, 1993 (in thousands) Net income from continuing operations $118,218 Income taxes 36,146 Fixed charges 121,499 -------- Total $275,863 ======== Interest expense $114,153 Interest component of rentals 7,346 -------- Total $121,499 ======== Ratio of earnings to fixed charges 2.27 ======== 16