CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash Flows From Operating Activities
Net income attributable to UIL Holdings	$ 66,200	$ 27,404
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	71,844	55,073
Deferred income taxes	17,948	(13,177)
Stock-based compensation expense (Note A)	3,342	2,148
Pension expense	20,231	13,152
Allowance for funds used during construction (AFUDC) - equity	(5,317)	(2,716)
Undistributed (earnings) losses in equity investments	(4,846)	745
Deferred purchased gas	39,834	0
Excess generation service charge	2,191	(19,950)
Deferred transmission expense	11,458	12,420
Other non-cash items, net	934	40
Changes in:
Utility accounts receivable, net	11,912	(6,729)
Unbilled revenues and other accounts receivable	26,986	1,723
Natural gas in storage	27,925	0
Prepayments	6,506	(1,195)
Accounts payable	(25,813)	6,724
Interest accrued	(1,440)	380
Taxes accrued	(3,544)	19,245
Accrued liabilities	(21,445)	(7,033)
Accrued pension	(62,321)	(1,912)
Other assets	(344)	(730)
Other liabilities	(2,773)	968
Total Adjustments	113,268	59,176
Net Cash provided by Operating Activities	179,468	86,580
Cash Flows from Investing Activities
Related party note receivable (Note H)	(1,050)	(8,150)
Plant expenditures including AFUDC debt	(161,030)	(85,529)
Acquisition of gas companies, net of cash acquired (Note N)	11,211	0
Changes in restricted cash	(2,664)	1,993
Deposits in New England East West Solution (NEEWS) (Note C)	(1,099)	0
Other	(845)	144
Net Cash (used in) Investing Activities	(155,477)	(91,542)
Cash Flows from Financing Activities
Issuances of long-term debt	1,050	8,150
Payments on long-term debt	(52,286)	(4,286)
Line of credit borrowings (repayments)	(7,000)	30,000
Payment of common stock dividend	(43,605)	(25,866)
Bank overdrafts	11,286	0
Other	(62)	(468)
Net Cash provided by Financing Activities	(90,617)	7,530
Unrestricted Cash and Temporary Cash Investments:
Net change for the period	(66,626)	2,568
Balance at beginning of period	90,281	15,269
Balance at end of period	23,655	17,837
Non-cash investing activity:
Plant expenditures included in ending accounts payable	$ 35,636	$ 20,773