Exhibit 12 MASSACHUSETTS ELECTRIC COMPANY Computation of Ratio of Earnings to Fixed Charges (SEC Coverage) (Unaudited) 12 Months Ended September 30, 1995 Years Ended December 31, Actual ------------------------------------------------------------- (Unaudited) 1994 1993 1992 1991 1990 -------------- ---- ---- ---- ---- ---- (In Thousands) Net Income $26,854 $34,726 $23,779 $34,905 $25,243 $35,192 - ---------- Add income taxes and fixed charges - ---------------------------------- Current federal income taxes (3,122) (6,762) 5,606 3,977 8,568 14,681 Deferred federal income taxes 16,973 24,932 3,430 13,451 3,889 1,044 Investment tax credits - net (1,156) (1,228) (1,228) (1,228) (1,194) (1,225) Massachusetts franchise tax 3,860 4,681 3,348 3,858 2,920 3,765 Interest on long-term debt 24,699 20,967 23,403 21,910 20,157 20,626 Interest on short-term debt and other5,709 6,366 3,638 3,657 3,643 3,090 ------- ------- ------- ------- ------- ------- Net earnings available for fixed charges $73,817 $83,682 $61,976 $80,530 $63,226 $77,173 ------- ------- ------- ------- ------- ------- Fixed charges: Interest on long-term debt $24,699 $20,967 $23,403 $21,910 $20,157 $20,626 Interest on short-term debt and other5,709 6,366 3,638 3,657 3,643 3,090 ------- ------- ------- ------- ------- ------- Total fixed charges $30,408 $27,333 $27,041 $25,567 $23,800 $23,716 ======= ======= ======= ======= ======= ======= Ratio of earnings to fixed charges 2.43 3.06 2.29 3.15 2.66 3.25 - ----------------------------------