Exhibit 12.1 Boston Edison Company Computation of Ratio of Earnings to Fixed Charges Year ended December 31, 1995 (in thousands) Net income from continuing operations $112,310 Income taxes 66,547 Fixed charges 129,576 -------- Total $308,433 ======== Interest expense $119,282 Interest component of rentals 10,294 -------- Total $129,576 ======== Ratio of earnings to fixed charges 2.38 ====