CONSOLIDATED 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
Operating revenues
Electric	$ 178,692	$ 164,082	$ 363,060	$ 337,144
Natural gas	19,880	15,281	73,363	66,762
Other	278	234	535	460
Total operating revenues	198,850	179,597	436,958	404,366
Operating expenses
Electric fuel and purchased power	100,183	99,535	205,665	196,885
Cost of natural gas sold and transported	12,081	8,623	49,345	44,701
Other operating and maintenance expenses	40,309	37,934	79,897	75,820
Conservation program expenses	3,422	2,989	6,483	5,885
Depreciation and amortization	16,906	15,883	33,645	31,613
Taxes (other than income taxes)	5,834	5,639	11,911	11,601
Total operating expenses	178,735	170,603	386,946	366,505
Operating income	20,115	8,994	50,012	37,861
Other (expense) income, net	(60)	86	14	749
Allowance for funds used during construction - equity	305	649	411	1,083
Interest charges and financing costs
Interest charges - includes other financing costs of $445, $354, $809 and $704, respectively	6,082	6,043	12,085	12,399
Allowance for funds used during construction - debt	(39)	(298)	(77)	(483)
Total interest charges and financing costs	6,043	5,745	12,008	11,916
Income before income taxes	14,317	3,984	38,429	27,777
Income taxes	5,839	1,305	15,308	11,554
Net income	$ 8,478	$ 2,679	$ 23,121	$ 16,223