BALANCE SHEETS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 2,934	$ 1,011
Accounts receivable, net	91,724	70,951
Accounts receivable from affiliates	10,198	15,840
Accrued unbilled revenues	142,241	109,207
Inventories	35,116	37,138
Regulatory assets	31,833	27,595
Derivative instruments	41,835	17,826
Deferred income taxes	64,313	85,362
Prepayments and other	32,357	19,571
Total current assets	452,551	384,501
Property, plant and equipment, net	3,520,730	3,284,030
Other assets
Regulatory assets	278,777	290,415
Derivative instruments	37,110	41,056
Other	14,795	17,068
Total other assets	330,682	348,539
Total assets	4,303,963	4,017,070
Current liabilities
Short-term debt	99,000	84,000
Borrowings under utility money pool arrangement	0	38,000
Accounts payable	163,733	143,879
Accounts payable to affiliates	11,600	15,387
Regulatory liabilities	77,796	83,759
Taxes accrued	17,722	23,584
Accrued interest	17,122	16,883
Dividends payable	24,369	18,082
Derivative instruments	3,565	3,583
Other	78,628	75,355
Total current liabilities	493,535	502,512
Deferred credits and other liabilities
Deferred income taxes	791,162	757,778
Regulatory liabilities	92,382	81,504
Asset retirement obligations	19,917	19,375
Derivative instruments	32,425	34,207
Pension and employee benefit obligations	51,965	55,087
Other	5,064	3,051
Total deferred credits and other liabilities	992,915	951,002
Commitments and contingencies
Capitalization
Long-term debt	1,349,518	1,199,865
Common stock — 200 shares authorized of $1.00 par value; 100 shares outstanding at June 30, 2014 and Dec. 31, 2013, respectively	0	0
Additional paid in capital	1,105,463	1,005,463
Retained earnings	363,608	359,389
Accumulated other comprehensive loss	(1,076)	(1,161)
Total common stockholder’s equity	1,467,995	1,363,691
Total liabilities and equity	$ 4,303,963	$ 4,017,070