CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 24,200	$ 33,400
Accounts receivable, net	373,100	310,300
Accounts receivable from affiliates	10,500	80,800
Accrued unbilled revenues	281,300	313,500
Inventory, Net	156,900	197,400
Inventories	156,900	197,400
Regulatory assets	67,700	120,600
Derivative instruments	30,100	42,600
Prepayments and other	32,900	23,800
Total current assets	976,700	1,122,400
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	4,892,500	4,791,000
Property, plant and equipment, net	15,090,100	15,120,000
Other assets
Regulatory assets	1,029,600	1,010,700
Derivative instruments	2,600	1,200
Operating Lease, Right-of-Use Asset	633,000	0
Other	177,000	37,200
Total other assets	1,842,200	1,049,100
Total assets	17,909,000	17,291,500
Current liabilities
Current portion of long-term debt	0	406,200
Short-term Debt	239,000	307,000
Accounts payable	428,500	503,400
Accounts payable to affiliates	35,000	46,000
Regulatory liabilities	104,500	67,300
Taxes accrued	271,900	202,000
Accrued interest	33,500	43,200
Dividends payable to parent	98,800	91,500
Derivative instruments	20,200	34,600
Other	170,300	101,500
Total current liabilities	1,401,700	1,802,700
Deferred credits and other liabilities
Deferred income taxes	1,726,200	1,719,300
Deferred investment tax credits	24,700	25,300
Regulatory liabilities	2,041,200	2,021,500
Asset retirement obligations	342,500	338,700
Derivative instruments	1,100	600
Customer Advances for Construction	170,000	168,100
Pension and employee benefit obligations	231,200	275,300
Operating Lease, Liability, Noncurrent	581,100	0
Other	154,700	50,400
Total deferred credits and other liabilities	5,272,700	4,599,200
Commitments and contingencies
Capitalization
Long-term debt	4,846,100	4,591,400
Common stock — 100 shares authorized at $0.01 par value; 100 shares outstanding at March 31, 2019 and Dec. 31, 2018, respectively	0	0
Additional paid in capital	4,390,500	4,340,500
Retained earnings	2,023,200	1,983,200
Accumulated other comprehensive loss	(25,200)	(25,500)
Total common stockholder’s equity	6,388,500	6,298,200
Total liabilities and equity	$ 17,909,000	$ 17,291,500