BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 44,000	$ 10,800
Accounts receivable, net	90,700	79,600
Accounts receivable from affiliates	10,500	1,300
Investments in money pool arrangements	0	65,000
Accrued unbilled revenues	114,500	129,800
Inventory	33,900	40,400
Regulatory assets	26,000	31,500
Derivative instruments	17,800	15,900
Prepaid taxes	14,200	15,000
Prepayments and other	10,700	10,400
Total current assets	362,300	399,700
Property, plant and equipment, net	5,946,400	5,095,600
Other assets
Regulatory assets	366,200	362,900
Derivative instruments	15,800	19,000
Other	5,100	11,300
Total other assets	387,100	393,200
Total assets	6,695,800	5,888,500
Current liabilities
Short-term debt	42,000	0
Accounts payable	191,800	211,800
Accounts payable to affiliates	19,900	22,600
Regulatory liabilities	85,800	68,800
Taxes accrued	41,600	35,200
Accrued interest	25,800	23,300
Dividends payable	45,200	26,800
Derivative instruments	3,600	3,600
Other	28,300	29,600
Total current liabilities	484,000	421,700
Deferred credits and other liabilities
Deferred income taxes	619,100	574,900
Regulatory liabilities	780,900	784,600
Asset retirement obligations	32,400	28,500
Derivative instruments	16,400	20,000
Pension and employee benefit obligations	92,400	90,300
Other	7,900	8,300
Total deferred credits and other liabilities	1,549,100	1,506,600
Commitments and contingencies
Capitalization
Long-term debt	2,126,100	1,829,900
Common stock — 200 shares authorized of $1.00 par value; 100 shares outstanding at Dec. 31, 2018 and 2017, respectively	0	0
Additional paid in capital	1,932,300	1,590,200
Retained earnings	605,700	541,600
Accumulated other comprehensive loss	(1,400)	(1,500)
Total common stockholder’s equity	2,536,600	2,130,300
Total liabilities and equity	$ 6,695,800	$ 5,888,500