Western Massachusetts Electric Company										Exhibit 12
Ratio of Earnings to Fixed Charges
(Thousands of Dollars)
	For the Years Ended December 31,
		2012		2011		2010		2009		2008
Earnings, as defined:
Net income	$	54,503	$	43,054	$	23,090	$	26,196	$	18,330
Income tax expense		32,140		23,186		16,325		14,923		10,545
Equity in earnings of regional nuclear
generating companies		(11)		(4)		(36)		(78)		(101)
Dividends received from regional equity investees		-		-		120		419		-
Fixed charges, as below		28,162		25,079		23,042		20,614		21,910
Less: Interest capitalized (including AFUDC)		(534)		(534)		(336)		(195)		(1,010)
Total earnings, as defined	$	114,260	$	90,781	$	62,205	$	61,879	$	49,674
Fixed charges, as defined:
Interest on long-term debt (a)	$	23,462	$	20,023	$	17,988	$	14,074	$	13,244
Interest on rate reduction bonds		1,229		2,335		3,372		4,335		5,133
Other interest (b)		1,943		1,254		479		877		1,256
Rental interest factor		994		933		867		1,133		1,267
Interest capitalized (including AFUDC)		534		534		336		195		1,010
Total fixed charges, as defined	$	28,162	$	25,079	$	23,042	$	20,614	$	21,910
Ratio of Earnings to Fixed Charges		4.06		3.62		2.70		3.00		2.27
(a) Interest on long-term debt includes amortized premiums, discounts and capitalized expenses related to indebtedness.
(b) For the years ended December 31, 2009 and 2008, other interest includes interest related to accounting for uncertain tax positions.