Schedule II Consolidated Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Schedule II - Consolidated Valuation and Qualifying Accounts

NV Energy, Inc.
Schedule II - Consolidated Valuation and Qualifying Accounts
For The Years Ended December 31, 2011, 2010 and 2009
(Dollars in Thousands)
		Provision for Uncollectible Accounts
Balance at January 1, 2009		$	32,884
	Provision charged to income		21,839
	Amounts written off, less recoveries		(22,382)
Balance at December 31, 2009		$	32,341
Balance at January 1, 2010		$	32,341
	Provision charged to income		15,551
	Amounts written off, less recoveries		(19,208)
Balance at December 31, 2010		$	28,684
Balance at January 1, 2011		$	28,684
	Provision charged to income		15,735
	Amounts written off, less recoveries		(36,269)
Balance at December 31, 2011		$	8,150

Nevada Power Company
Schedule II - Consolidated Valuation and Qualifying Accounts
For The Years Ended December 31, 2011, 2010 and 2009
(Dollars in Thousands)
		Provision for Uncollectible Accounts
Balance at January 1, 2009		$	30,621
	Provision charged to income		17,519
	Amounts written off, less recoveries		(18,765)
Balance at December 31, 2009		$	29,375
Balance at January 1, 2010		$	29,375
	Provision charged to income		13,147
	Amounts written off, less recoveries		(16,094)
Balance at December 31, 2010		$	26,428
Balance at January 1, 2011		$	26,428
	Provision charged to income		13,820
	Amounts written off, less recoveries		(33,497)
Balance at December 31, 2011		$	6,751

Sierra Pacific Power Company
Schedule II - Consolidated Valuation and Qualifying Accounts
For The Years Ended December 31, 2011, 2010 and 2009
(Dollars in Thousands)
		Provision for Uncollectible Accounts
Balance at January 1, 2009		$	2,262
	Provision charged to income		4,321
	Amounts written off, less recoveries		(3,617)
Balance at December 31, 2009		$	2,966
Balance at January 1, 2010		$	2,966
	Provision charged to income		2,404
	Amounts written off, less recoveries		(3,114)
Balance at December 31, 2010		$	2,256
Balance at January 1, 2011		$	2,256
	Provision charged to income		1,915
	Amounts written off, less recoveries		(2,772)
Balance at December 31, 2011		$	1,399