STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities
Net income	$ 46,770	$ 40,790
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	66,692	62,304
Demand side management program amortization	837	837
Deferred income taxes	51,678	26,501
Amortization of investment tax credits	(170)	(164)
Allowance for equity funds used during construction	(6,535)	(4,822)
Net derivative losses	133	133
Changes in operating assets and liabilities:
Accounts receivable	(15,131)	(19,542)
Accrued unbilled revenues	(33,034)	(36,171)
Inventories	2,022	3,102
Prepayments and other	(12,786)	4,764
Accounts payable	16,949	24,335
Net regulatory assets and liabilities	(34,055)	(27,545)
Other current liabilities	1,536	4,724
Pension and other employee benefit obligations	(3,122)	(19,816)
Change in other noncurrent assets	3,558	(3,714)
Change in other noncurrent liabilities	2,198	(2,915)
Net cash provided by operating activities	87,540	52,801
Investing activities
Utility capital/construction expenditures	(281,398)	(254,309)
Allowance for equity funds used during construction	6,535	4,822
Investments in utility money pool arrangement	(22,000)	(12,000)
Repayments from utility money pool arrangement	22,000	12,000
Net cash used in investing activities	(274,863)	(249,487)
Financing activities
Proceeds from short-term borrowings, net	15,000	40,000
Proceeds from Issuance of Long-term Debt	148,510	0
Borrowings under utility money pool arrangement	382,000	280,000
Repayments under utility money pool arrangement	(420,000)	(214,000)
Capital contributions from parent	100,000	125,000
Dividends paid to parent	(36,264)	(33,886)
Net cash provided by financing activities	189,246	197,114
Net change in cash and cash equivalents	1,923	428
Cash and cash equivalents at beginning of period	1,011	482
Cash and cash equivalents at end of period	2,934	910
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(33,668)	(31,165)
Cash received (paid) for income taxes, net	8,705	(1,669)
Supplemental disclosure of non-cash investing transactions:
Property, plant and equipment additions in accounts payable	$ 22,423	$ 46,739