COMMON SHARES

3 Months Ended

Mar. 31, 2013

Notes To Consolidated Financial Statements [Abstract]

Schedule of Stock by Class [Text Block]

12.       COMMON SHARES

The following table sets forth the NU common shares and the shares of CL&P, NSTAR Electric, PSNH and WMECO common stock authorized and issued as ofMarch 31, 2013 and December 31, 2012and the respective par values:

	Shares
	Authorized				Issued
	Per Share		As of		As of
	Par Value		March 31, 2013	December 31, 2012	March 31, 2013		December 31, 2012
NU	$	5	380,000,000	380,000,000		332,951,956		332,509,383
CL&P	$	10	24,500,000	24,500,000		6,035,205		6,035,205
NSTAR Electric	$	1	100,000,000	100,000,000		100		100
PSNH	$	1	100,000,000	100,000,000		301		301
WMECO	$	25	1,072,471	1,072,471		434,653		434,653

As of March 31, 2013 and December 31, 2012,18,356,487and 18,455,749 NU common shares were held as treasury shares, respectively.