NSTAR Electric Company		Exhibit 12
Ratio of Earnings to Fixed Charges
(Unaudited)
(Thousands of Dollars)		Six Months
		Ended
		June 30, 2012
Earnings, as defined:
Net income	$	49,422
Income tax expense		32,847
Equity in earnings of regional nuclear
generating companies		(199)
Dividends received from regional equity investees		264
Fixed charges, as below		38,519
Less: Interest capitalized (including AFUDC)		171
Total earnings, as defined	$	121,024
Fixed charges, as defined:
Interest on long-term debt (a)	$	44,567
Interest on rate reduction bonds		2,253
Other interest		(11,433)
Rental interest factor		3,303
Interest capitalized (including AFUDC)		(171)
Total fixed charges, as defined	$	38,519
Ratio of Earnings to Fixed Charges		3.14
(a) Interest on long-term debt includes amortized premiums, discounts and capitalized expenses related to indebtedness.