CONSOLIDATED BALANCE SHEET (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets
Unrestricted cash and temporary cash investments	$ 12,190	$ 30,999
Restricted cash	3,960	6,522
Accounts receivable less allowance of $12,155 and $10,939, respectively	192,961	180,465
Unbilled revenues	53,432	71,957
Current regulatory assets (Note A)	123,007	102,900
Natural gas in storage, at average cost	81,491	111,516
Deferred income taxes	20,363	41,635
Refundable taxes	32,705	74,983
Current portion of derivative assets (Note A)	12,410	14,189
Other	25,827	32,062
Total Current Assets	558,346	667,228
Other investments
Equity investment in GenConn (Note A)	126,554	131,082
Other	23,152	22,571
Total Other investments	149,706	153,653
Net Property, Plant and Equipment	2,651,170	2,570,355
Regulatory Assets (future amounts due from customers through the ratemaking process) (Note A)	914,971	983,222
Deferred Charges and Other Assets
Unamortized debt issuance expenses	17,491	17,631
Other long-term receivable	1,276	1,278
Derivative assets (Note A)	70,161	73,264
Goodwill	266,205	266,797
Other	14,891	11,181
Total Deferred Charges and Other Assets	370,024	370,151
Total Assets	4,644,217	4,744,609
Current Liabilities
Line of credit borrowings	95,000	235,000
Current portion of long-term debt	13,712	13,712
Accounts payable	127,110	194,641
Dividends payable	21,910	21,847
Accrued liabilities	75,285	78,138
Current regulatory liabilities (Note A)	28,597	26,245
Taxes accrued	13,989	21,870
Interest accrued	21,714	21,527
Current portion of derivative liabilities (Note A)	30,332	28,888
Total Current Liabilities	427,649	641,868
Noncurrent Liabilities
Pension accrued	209,783	237,083
Connecticut Yankee contract obligation (Note J)	12,718	14,247
Other post-retirement benefits accrued	86,517	84,810
Derivative liabilities (Note A)	229,563	239,147
Other	73,098	75,268
Total Noncurrent Liabilities	611,679	650,555
Deferred Income Taxes (future tax liabilities owed to taxing authorities)	413,436	388,553
Regulatory Liabilities (future amounts owed to customers through the ratemaking process) (Note A)	430,771	420,175
Commitments and Contingencies (Note J)
Capitalization (Note B)
Long-term debt, net of unamortized discount and premium	1,645,139	1,548,347
Preferred Stock of Subsidiary
Redeemable preferred stock, noncontrolling interests	750	750
Common Stock Equity
Common stock	936,064	931,153
Paid-in capital	19,840	19,791
Retained earnings	159,063	143,792
Accumulated other comprehensive income (loss)	(174)	(375)
Net Common Stock Equity	1,114,793	1,094,361
Total Capitalization	2,760,682	2,643,458
Total Liabilities and Capitalization	$ 4,644,217	$ 4,744,609