CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income	$ 61,406	$ 42,384
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	35,632	38,997
Amortization of deferred financing costs	2,568	3,101
Allowance for funds used during construction - other funds	(1,094)	(318)
Equity based compensation	440	428
Changes in assets and liabilities:
Due from affiliates	1,624	4,036
Inventory	(833)	95
Prepaids and other current assets	(66)	(27)
Accounts payable and accrued liabilities	(590)	334
Net cash provided by operating activities	99,087	89,030
Cash flows from investing activities
Additions to electric plant	(48,653)	(147,803)
Proceeds from asset exchange transaction	1,632
Net cash used in investing activities	(47,021)	(147,803)
Cash flows from financing activities
Proceeds from short-term borrowings	118,000	110,500
Repayments of short-term borrowings	(58,000)	(213,000)
Proceeds from borrowings of long-term debt		200,000
Repayments of long-term debt	(66,185)	(5,845)
Deferred financing costs		(809)
Dividends and distributions paid	(45,521)	(45,499)
Net cash (used in) provided by financing activities	(51,706)	45,347
Net increase (decrease) in cash, cash equivalents and restricted cash	360	(13,426)
Cash, cash equivalents and restricted cash at beginning of period	4,550	19,294
Cash, cash equivalents and restricted cash at end of period	$ 4,910	$ 5,868