Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 75,289	$ 76,077
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	55,881	53,607
Regulatory debits	581	358
Regulatory charges resulting from tax rate changes	11,693	11,693
Amortization of deferred charges and credits	(1,890)	(1,129)
Allowance for equity funds used during construction (equity AFUDC)	(501)	(1,003)
Changes in current assets and liabilities:
Trade and other accounts receivable	6,107	3,302
Affiliated receivables	66	0
Materials and supplies	(128)	(25)
Other current assets	3,642	8,590
Trade accounts payable	(1,925)	(1,919)
Affiliated payables	2,989	(16,379)
Other accrued liabilities	(8,422)	(8,031)
Changes in noncurrent assets and liabilities:
Regulatory liabilities	2,189	1,559
Other, net	1,421	931
Net cash provided by operating activities	146,992	127,631
Cash flows from financing activities:
Payments for debt issuance costs	0	(58)
Cash distributions to parent	(88,000)	(46,000)
Net cash used in financing activities	(88,000)	(46,058)
Property, plant and equipment:
Capital expenditures	(15,892)	(31,705)
Contributions and advances for construction costs	4,588	412
Disposal of property, plant and equipment, net	(297)	(64)
Advances to affiliates, net	(47,391)	(50,216)
Net cash used in investing activities	(58,992)	(81,573)
NET INCREASE (DECREASE) IN CASH	0	0
CASH AT BEGINNING OF PERIOD	0	0
CASH AT END OF PERIOD	0	0
Increases to property, plant and equipment, exclusive of equity AFUDC	(17,487)	(37,510)
Changes in related accounts payable and accrued liabilities	1,595	5,805
Capital expenditures	$ (15,892)	$ (31,705)