Derivative Accounting (Tables)

12 Months Ended

Dec. 31, 2011

Derivative Accounting

Outstanding gross notional amount of derivatives, which represents both purchases and sales (does not reflect net position)

Commodity	Quantity
Power	11,882	GWh
Gas	118,199	Billion Btu

Gains and losses from derivative instruments in designated accounting hedges relationships

Commodity Contracts	Financial Statement Location	Year EndedDecember 31, 2011			Year EndedDecember 31, 2010
Loss Recognized in AOCI(Effective Portion)	Accumulated othercomprehensive loss-derivativeinstruments	$	(94,660	)	$	(155,287	)
Loss Reclassified from AOCI intoIncome (Effective PortionRealized)	Regulated electricity fuel and purchased power	(117,189		)	(122,740		)
Gain (Loss) Recognized in Income(Ineffective Portion and AmountExcluded from EffectivenessTesting) (a)	Regulated electricity fuel and purchased power	(211		)	3,680

(a)During the year ended December 31, 2011 and 2010, we had no amounts reclassified from AOCI to earnings related to discontinued cash flow hedges.

Gains and losses from derivative instruments not designated as accounting hedges instruments

Commodity Contracts	Financial Statement Location	Year EndedDecember 31, 2011			Year EndedDecember 31, 2010
Net Gain (Loss) Recognizedin Income	Regulated electricity revenue	$	(27	)	$	1,436
Net Loss Recognized inIncome	Regulated electricity fuel and purchased power expense	(52,113		)	(107,690		)
Total		$	(52,140	)	$	(106,254	)

Fair value of derivative instruments, margin account and cash collateral reported on a gross basis

The following table provides information about the fair value of our risk management activities reported on a gross basis.  Transactions with counterparties that have master netting arrangements are reported net on the balance sheet.  These amounts are located in the assets and liabilities from risk management activities lines of our Consolidated Balance Sheets.  Amounts are as of December 31, 2011 (dollars in thousands):

Commodity Contracts	Designated as Hedging Instruments			Not Designated as Hedging Instruments			Margin and Collateral Provided to Counterparties		Collateral Provided from Counterparties (a)			Other (b)			Total
Current Assets	$	7,287		$	76,162		$	1,630	$	—		$	(54,815	)	$	30,264
Investments and Other Assets	3,804			58,273			—		—			(12,755		)	49,322
Total Assets	11,091			134,435			1,630		—			(67,570		)	79,586
Current Liabilities	(82,195		)	(124,028		)	107,228		(11,145		)	56,172			(53,968		)
Deferred Credits and Other	(68,137		)	(92,880		)	65,768		—			12,754			(82,495		)
Total Liabilities	(150,332		)	(216,908		)	172,996		(11,145		)	68,926			(136,463		)
Total Derivative Instruments	$	(139,241	)	$	(82,473	)	$	174,626	$	(11,145	)	$	1,356		$	(56,877	)

(a)Collateral relates to non-derivative instruments or derivative instruments that qualify for a scope exception.

(b)Other represents counterparty netting, options, and other risk management contracts.

The following table provides information about the fair value of our risk management activities reported on a gross basis at December 31, 2010 (dollars in thousands):

Commodity Contracts	Designated as Hedging Instruments			Not Designated as Hedging Instruments			Margin and Collateral Provided to Counterparties (a)		Collateral Provided from Counterparties (b)			Other (c)			Total
Current Assets	$	10,295		$	64,153		$	36,135	$	(1,750	)	$	(35,045	)	$	73,788
Investments and Other Assets	5,056			60,813			—		—			(26,837		)	39,032
Total Assets	15,351			124,966			36,135		(1,750		)	(61,882		)	112,820
Current Liabilities	(108,387		)	(112,847		)	126,364		(1,250		)	37,144			(58,976		)
Deferred Credits and Other	(73,041		)	(85,506		)	66,393		—			26,764			(65,390		)
Total Liabilities	(181,428		)	(198,353		)	192,757		(1,250		)	63,908			(124,366		)
Total Derivative Instruments	$	(166,077	)	$	(73,387	)	$	228,892	$	(3,000	)	$	2,026		$	(11,546	)

(a)Includes $11 million of collateral relating to non-derivative instruments or derivative instruments that qualify for a scope exception.

(b)Includes $1 million of collateral relating to non-derivative instruments or derivative instruments that qualify for a scope exception.

(c)Other represents counterparty netting, options, and other risk management contracts.

Information about derivative instruments that have credit-risk-related contingent features

	December 31, 2011
Aggregate Fair Value of Derivative Instruments in a Liability Position	$	330
Cash Collateral Posted	147
Additional Cash Collateral in the Event Credit-Risk Related Contingent Features were Fully Triggered (a)	151

(a)This amount is after counterparty netting and includes those contracts which qualify for scope exceptions, which are excluded from the derivative details in the footnote above.