Western Massachusetts Electric Company												Exhibit 12
Ratio of Earnings to Fixed Charges
(Unaudited)
(Thousands of Dollars)		Three Months
		Ended	For the Years Ended December 31,
		March 31, 2012		2011		2010		2009		2008		2007
Earnings, as defined:
Net income	$	14,186	$	43,054	$	23,090	$	26,196	$	18,330	$	23,604
Income tax expense		9,171		23,186		16,325		14,923		10,545		14,586
Equity in earnings of regional nuclear
generating companies		(1)		(4)		(36)		(78)		(101)		(526)
Dividends received from regional equity investees		-		-		120		419		-		701
Fixed charges, as below		6,768		25,079		23,042		20,614		21,910		22,162
Less: Interest capitalized (including AFUDC)		(140)		(534)		(336)		(195)		(1,010)		(983)
Total earnings, as defined	$	29,984	$	90,781	$	62,205	$	61,879	$	49,674	$	59,544
Fixed charges, as defined:
Interest on long-term debt (a)	$	5,766	$	20,023	$	17,988	$	14,074	$	13,244	$	11,577
Interest on rate reduction bonds		415		2,335		3,372		4,335		5,133		5,839
Other interest (b)		214		1,254		479		877		1,256		2,430
Rental interest factor		233		933		867		1,133		1,267		1,333
Interest capitalized (including AFUDC)		140		534		336		195		1,010		983
Total fixed charges, as defined	$	6,768	$	25,079	$	23,042	$	20,614	$	21,910	$	22,162
Ratio of Earnings to Fixed Charges		4.43		3.62		2.70		3.00		2.27		2.69
(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.