SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

Three Months Ended
June 30, 2012			NVE
		Consolidated		NVE Other		NPC Electric		SPPC Total		SPPC Electric		SPPC Gas
Operating Revenues		$	740,698	$	4	$	553,143	$	187,551	$	168,007	$	19,544
Energy Costs:
	Fuel for power generation		112,585		-		81,258		31,327		31,327		-
	Purchased power		164,092		-		135,276		28,816		28,816		-
	Gas purchased for resale		9,492		-		-		9,492		-		9,492
	Deferred energy		10,490		-		5,053		5,437		4,314		1,123
Energy efficiency program costs			24,600		-		21,200		3,400		3,400
Total Costs		$	321,259	$	-	$	242,787	$	78,472	$	67,857	$	10,615
Gross Margin		$	419,439	$	4	$	310,356	$	109,079	$	100,150	$	8,929
Other operating expenses			103,371		1,067		68,650		33,654
Maintenance			24,650		-		16,988		7,662
Depreciation and amortization			96,316		-		69,131		27,185
Taxes other than income			14,266		45		8,596		5,625
Operating Income (Loss)		$	180,836	$	(1,108)	$	146,991	$	34,953

Six Months Ended
June 30, 2012			NVE
		Consolidated		NVE Other		NPC Electric		SPPC Total		SPPC Electric		SPPC Gas
Operating Revenues		$	1,352,118	$	8	$	948,831	$	403,279	$	337,813	$	65,466
Energy Costs:
	Fuel for power generation		229,620		-		161,807		67,813		67,813		-
	Purchased power		281,208		-		216,807		64,401		64,401		-
	Gas purchased for resale		41,109		-		-		41,109		-		41,109
	Deferred energy		(1,249)		-		7,224		(8,473)		(8,356)		(117)
Energy efficiency program costs			44,025		-		36,974		7,051		7,051		-
Total Costs		$	594,713	$	-	$	422,812	$	171,901	$	130,909	$	40,992
Gross Margin		$	757,405	$	8	$	526,019	$	231,378	$	206,904	$	24,474
Other operating expenses			206,972		1,774		135,112		70,086
Maintenance			57,176		-		40,061		17,115
Depreciation and amortization			187,178		-		134,121		53,057
Taxes other than income			28,775		237		17,050		11,488
Operating Income (Loss)		$	277,304	$	(2,003)	$	199,675	$	79,632

Three Months Ended
June 30, 2011			NVE
		Consolidated		NVE Other		NPC Electric		SPPC Total		SPPC Electric		SPPC Gas
Operating Revenues		$	674,931	$	3	$	473,898	$	201,030	$	164,582	$	36,448
Energy Costs:
	Fuel for power generation		156,803		-		114,744		42,059		42,059		-
	Purchased power		160,308		-		122,408		37,900		37,900		-
	Gas purchased for resale		24,984		-				24,984		-		24,984
	Deferred energy		(8,106)		-		2,350		(10,456)		(11,898)		1,442
Total Costs		$	333,989	$	-	$	239,502	$	94,487	$	68,061	$	26,426
Gross Margin		$	340,942	$	3	$	234,396	$	106,543	$	96,521	$	10,022
Other operating expenses			97,547		925		61,935		34,687
Maintenance			32,186		-		19,325		12,861
Depreciation and amortization			89,606		-		61,913		27,693
Taxes other than income			14,684		39		9,046		5,599
Operating Income (Loss)		$	106,919	$	(961)	$	82,177	$	25,703

Six Months Ended
June 30, 2011			NVE
		Consolidated		NVE Other		NPC Electric		SPPC Total		SPPC Electric		SPPC Gas
Operating Revenues		$	1,315,914	$	7	$	863,966	$	451,941	$	343,199	$	108,742
Energy Costs:
	Fuel for power generation		303,141		-		215,814		87,327		87,327		-
	Purchased power		295,324		-		217,974		77,350		77,350		-
	Gas purchased for resale		77,616		-		-		77,616		-		77,616
	Deferred Energy		(10,058)		-		9,080		(19,138)		(23,829)		4,691
Total Costs		$	666,023	$	-	$	442,868	$	223,155	$	140,848	$	82,307
Gross Margin		$	649,891	$	7	$	421,098	$	228,786	$	202,351	$	26,435
Other operating expenses			203,521		1,582		127,036		74,903
Maintenance			61,948		0		41,662		20,286
Depreciation and amortization			172,708		0		119,586		53,122
Taxes other than income			30,929		202		19,104		11,623
Operating Income (Loss)		$	180,785	$	(1,777)	$	113,710	$	68,852