QUARTERLY FINANCIAL DATA (UNAUDITED)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Quarterly Financial Information [Text Block]

NOTE 18.         QUARTERLY FINANCIAL DATA (UNAUDITED)

The following figures are unaudited and include all adjustments necessary in the opinion of management for a fair presentation of the results of interim periods.  Dollars are presented in thousands except per share amounts.

NVE

		2011 Quarter Ended
		March		June		September		December
Operating Revenues		$	640,983	$	674,931	$	1,017,796	$	609,597
Operating Income		$	73,866	$	106,919	$	353,196	$	76,684
Net Income (Loss)		$	2,330	$	12,888	$	173,462	$	(25,248)
Net Income (Loss) per Share
	Basic	$	0.01	$	0.05	$	0.74	$	(0.11)
	Diluted	$	0.01	$	0.05	$	0.73	$	(0.11)

		2010 Quarter Ended
		March		June		September		December
Operating Revenues -		$	714,489	$	782,683	$	1,128,039	$	655,011
Operating Income		$	72,906	$	124,730	$	343,364	$	103,435
	-
Net Income (Loss)		$	(1,721)	$	36,946	$	177,546	$	14,213
Net Income (Loss) per Share
	Basic -	$	(0.01)	$	0.16	$	0.76	$	0.06
	Diluted	$	(0.01)	$	0.16	$	0.75	$	0.06

NPC		2011 Quarter Ended
		March		June		September		December
	Operating Revenues -	$	390,068	$	473,898	$	798,914	$	391,513
	Operating Income	$	31,533	$	82,177	$	296,327	$	33,759
	Net Income (Loss)	$	(9,020)	$	16,063	$	154,608	$	(29,065)

	2010 Quarter Ended
	March		June		September		December
Operating Revenues -	$	425,799	$	539,395	$	870,950	$	416,233
Operating Income	$	30,129	$	93,670	$	288,163	$	55,450
Net Income (Loss)	$	(12,326)	$	29,784	$	158,928	$	9,557

SPPC
		2011 Quarter Ended
		March		June		September		December
	Operating Revenues	$	250,911	$	201,030	$	218,878	$	218,080
	Operating Income	$	43,149	$	25,703	$	57,574	$	45,007
	Net Income	$	16,576	$	3,512	$	25,336	$	14,462

	2010 Quarter Ended
	March		June		September		December
Operating Revenues	$	288,682	$	243,282	$	257,084	$	238,774
Operating Income	$	43,404	$	32,184	$	56,223	$	49,184
Net Income	$	17,120	$	11,315	$	24,462	$	19,478