BALANCE SHEETS (UNAUDITED) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 4,444	$ 1,778
Accounts receivable, net	64,543	44,871
Accounts receivable from affiliates	3,975	1,610
Accrued unbilled revenues	137,065	110,184
Inventories	26,675	29,849
Regulatory assets	27,156	21,547
Derivative instruments	7,892	7,892
Deferred income taxes	15,978	19,051
Prepayments and other	5,746	5,006
Total current assets	293,474	241,788
Property, plant and equipment, net	2,498,706	2,401,266
Other assets
Regulatory assets	277,655	283,207
Derivative instruments	60,787	64,734
Other	10,965	10,668
Total other assets	349,407	358,609
Total assets	3,141,587	3,001,663
Current liabilities
Current portion of long-term debt	44,500	44,500
Short-term debt	131,000	49,000
Accounts payable	162,033	134,322
Accounts payable to affiliates	9,813	24,525
Regulatory liabilities	52,245	53,197
Taxes accrued	19,505	19,867
Accrued interest	12,567	12,128
Dividends payable	16,040	16,358
Derivative instruments	3,601	3,601
Other	22,170	21,349
Total current liabilities	473,474	378,847
Deferred credits and other liabilities
Deferred income taxes	558,721	541,204
Deferred investment tax credits	1,881	2,051
Regulatory liabilities	119,845	134,952
Asset retirement obligations	21,834	21,131
Derivative instruments	43,191	44,991
Pension and employee benefit obligations	48,260	52,280
Other	5,747	10,827
Total deferred credits and other liabilities	799,479	807,436
Commitments and contingent liabilities
Capitalization
Long-term debt	853,427	853,267
Common stock - authorized 200 shares of $1.00 par value; outstanding 100 shares	0	0
Additional paid in capital	743,531	693,531
Retained earnings	273,265	270,257
Accumulated other comprehensive loss	(1,589)	(1,675)
Total common stockholder's equity	1,015,207	962,113
Total liabilities and equity	$ 3,141,587	$ 3,001,663