NSTAR Electric Company and Subsidiary													Exhibit 12
Ratio of Earnings to Fixed Charges
(Unaudited)
		Nine Months
		Ended
		September 30,		For the Years Ended December 31,
(Thousands of Dollars)		2015		2014		2013		2012		2011		2010
Earnings, as defined:
	Net income	$	284,148	$	303,088	$	268,546	$	190,242	$	252,494	$	248,575
	Income tax expense		187,397		201,981		172,866		123,966		165,686		162,020
	Equity in earnings of regional nuclear    generating and transmission companies		(326)		(408)		(550)		(412)		(501)		(836)
	Dividends received from regional equity investees		-		-		344		286		676		669
	Fixed charges, as below		60,633		82,503		73,115		72,364		76,219		77,902
	Less: Interest capitalized (including AFUDC)		(1,466)		(2,027)		(511)		(259)		(185)		(108)
Total earnings, as defined		$	530,386	$	585,137	$	513,810	$	386,187	$	494,389	$	488,222
Fixed charges, as defined:
	Interest Expense	$	57,218	$	77,878	$	70,383	$	70,054	$	69,427	$	71,390
	Rental interest factor		1,949		2,598		2,221		2,051		6,607		6,404
	Interest capitalized (including AFUDC)		1,466		2,027		511		259		185		108
Total fixed charges, as defined		$	60,633	$	82,503	$	73,115	$	72,364	$	76,219	$	77,902
Ratio of Earnings to Fixed Charges			8.75		7.09		7.03		5.34		6.49		6.27