BALANCE SHEETS (UNAUDITED) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 29,724	$ 1,778
Accounts receivable, net	79,398	44,871
Accounts receivable from affiliates	4,172	1,610
Accrued unbilled revenues	113,197	110,184
Inventories	34,581	29,849
Regulatory assets	29,138	21,547
Derivative instruments	7,892	7,892
Deferred income taxes	18,988	19,051
Prepayments and other	6,661	5,006
Total current assets	323,751	241,788
Property, plant and equipment, net	2,532,454	2,401,266
Other assets
Regulatory assets	273,338	283,207
Derivative instruments	58,814	64,734
Other	12,431	10,668
Total other assets	344,583	358,609
Total assets	3,200,788	3,001,663
Current liabilities
Current portion of long-term debt	0	44,500
Short-term debt	0	49,000
Accounts payable	133,173	134,322
Accounts payable to affiliates	10,780	24,525
Regulatory liabilities	62,252	53,197
Taxes accrued	22,940	19,867
Accrued interest	25,155	12,128
Dividends payable	0	16,358
Derivative instruments	3,601	3,601
Other	27,786	21,349
Total current liabilities	285,687	378,847
Deferred credits and other liabilities
Deferred income taxes	598,220	541,204
Deferred investment tax credits	1,796	2,051
Regulatory liabilities	116,818	134,952
Asset retirement obligations	22,195	21,131
Derivative instruments	42,291	44,991
Pension and employee benefit obligations	47,606	52,280
Other	5,279	10,827
Total deferred credits and other liabilities	834,205	807,436
Commitments and contingent liabilities
Capitalization
Long-term debt	993,208	853,267
Common stock - authorized 200 shares of $1.00 par value; outstanding 100 shares	0	0
Additional paid in capital	783,531	693,531
Retained earnings	305,704	270,257
Accumulated other comprehensive loss	(1,547)	(1,675)
Total common stockholder's equity	1,087,688	962,113
Total liabilities and equity	$ 3,200,788	$ 3,001,663