STATEMENTS OF INCOME (UNAUDITED) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
STATEMENTS OF INCOME (UNAUDITED)
Operating revenues	$ 433,289	$ 398,449	$ 814,498	$ 779,931
Operating expenses
Electric fuel and purchased power	275,403	243,509	524,653	499,703
Other operating and maintenance expenses	62,732	62,282	125,485	118,987
Demand side management program expenses	4,382	3,047	7,811	4,993
Depreciation and amortization	26,364	25,654	52,522	51,308
Taxes (other than income taxes)	10,975	9,906	21,095	20,061
Total operating expenses	379,856	344,398	731,566	695,052
Operating income	53,433	54,051	82,932	84,879
Other income, net	84	119	146	113
Allowance for funds used during construction - equity	1,358	1,011	3,284	1,444
Interest charges and financing costs
Interest charges - includes other financing costs of $765, $659, $1,425 and $1,309, respectively	16,068	15,736	31,866	31,882
Allowance for funds used during construction - debt	(1,018)	(714)	(2,367)	(1,260)
Total interest charges and financing costs	15,050	15,022	29,499	30,622
Income before income taxes	39,825	40,159	56,863	55,814
Income taxes	15,153	15,763	21,953	23,719
Net income	$ 24,672	$ 24,396	$ 34,910	$ 32,095