Derivative and Hedging Instruments (Tables)

6 Months Ended

Jun. 30, 2011

Derivative and Hedging Instruments (Tables) [Abstract]

Gross Notional Volume of Open Derivatives

	June 30, 2011	December 31, 2010
Commodity derivative contracts	550,475 MWh	544,820 MWh
Commodity derivative contracts	5,000,000 Dth	5,420,000 Dth
FTRs	5,088 MW	2,609 MW

Fair Value of Derivative Instruments on the Balance Sheet

	Asset Derivatives			Liability Derivatives
(In thousands)	Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
June 30, 2011
Commodity derivative contracts	Other current assets	$	1,285	Other current liabilities	$	558
Commodity derivative contracts	Other deferred charges		72	Other deferred liabilities		27
FTRs	Other current assets		229	Other current liabilities		0
Ten-year PPA	N/A		N/A	Other current liabilities		725
Ten-year PPA	N/A		N/A	Other deferred liabilities		22,880
December 31, 2010
Commodity derivative contracts	Other current assets	$	649	Other current liabilities	$	1,227
Commodity derivative contracts	Other deferred charges		214	Other deferred liabilities		167
FTRs	Other current assets		312	Other current liabilities		0
Ten-year PPA	N/A		N/A	Other deferred liabilities		19,010

Derivative Gains and Losses in Balance Sheet

		2011				2010
(In thousands)		Current and long-term regulatory asset		Other current assets		Current and long-term regulatory asset		Other current assets
Three Months Ended June 30:
Balance at April 1,	$	21,677	$	505	$	19,891	$	1,119
Change in unrealized loss (gain)		888		0		(2,037)		0
Realized loss reclassified to a deferred account		(610)		610		(104)		104
Realized gain (loss) reclassified to income
statement		649		(114)		(405)		(193)
Balance at June 30,	$	22,604	$	1,001	$	17,345	$	1,030
Six Months Ended June 30:
Balance at January 1,	$	19,230	$	1,411	$	12,542	$	1,334
Change in unrealized loss		3,936		0		6,677		0
Realized loss reclassified to a deferred account		(1,274)		1,274		(810)		810
Realized gain (loss) reclassified to income
statement		712		(1,684)		(1,064)		(1,114)
Balance at June 30,	$	22,604	$	1,001	$	17,345	$	1,030

Derivative Gains and Losses in Income Statement

		Realized losses (gains)
				Fuel for electric
		Regulated		generation/		Cost of
(In thousands)		gas revenues		purchased power		gas sold
Three Months Ended June 30, 2011:
Commodity derivative contracts	$	0	$	90	$	0
FTRs		0		(625)		0
Ten-year PPA		0		0		0
Three Months Ended June 30, 2010:
Commodity derivative contracts	$	0	$	484	$	(20)
FTRs		0		134		0
Ten-year PPA		0		0		0
Six Months Ended June 30, 2011:
Commodity derivative contracts	$	0	$	28	$	1,315
FTRs		0		(371)		0
Ten-year PPA		0		0		0
Six Months Ended June 30, 2010:
Commodity derivative contracts	$	0	$	1,703	$	610
FTRs		0		(135)		0
Ten-year PPA		0		0		0