v2.4.0.8

Guarantees and condensed consolidating financial information (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed consolidating statement of operations and comprehensive income
Net income (loss)	$ 1.2	$ (2.1)	$ 9.0	$ (41.3)
Other comprehensive income (loss):
Unrealized gain on hedging activities	0.6	(0.5)	0.6	(0.5)
Net amount reclassified to earnings	0.1	0.2	0.4	0.5
Net unrealized gain (loss) on derivatives	0.7	(0.3)	1.0	(0.1)
Foreign currency translation adjustments	(18.0)	(13.9)	(30.1)	3.3
Other comprehensive (loss) income, net of tax	(17.3)	(14.2)	(29.1)	3.3
Comprehensive loss	(16.1)	(16.3)	(20.1)	(38.0)
Less: Comprehensive income attributable to noncontrolling interest	4.2	3.0	5.5	6.1
Comprehensive loss attributable to Atlantic Power Corporation	(20.3)	(19.3)	(25.6)	(44.1)
Guarantor Subsidiaries
Condensed consolidating statement of operations and comprehensive income
Net income (loss)	(0.4)		12.5
Other comprehensive income (loss):
Unrealized gain on hedging activities	0.6		0.6
Net amount reclassified to earnings	0.1		0.4
Net unrealized gain (loss) on derivatives	0.7		1.0
Foreign currency translation adjustments	(18.0)		(30.1)
Other comprehensive (loss) income, net of tax	(17.3)		(29.1)
Comprehensive loss	(17.7)		(16.6)
Less: Comprehensive income attributable to noncontrolling interest	4.2		5.5
Comprehensive loss attributable to Atlantic Power Corporation	(21.9)		(22.1)
Curtis Palmer
Condensed consolidating statement of operations and comprehensive income
Net income (loss)	4.8		5.4
Other comprehensive income (loss):
Comprehensive loss	4.8		5.4
Comprehensive loss attributable to Atlantic Power Corporation	4.8		5.4
Atlantic Power
Condensed consolidating statement of operations and comprehensive income
Net income (loss)	(3.3)		(8.9)
Other comprehensive income (loss):
Comprehensive loss	(3.3)		(8.9)
Comprehensive loss attributable to Atlantic Power Corporation	(3.3)		(8.9)
Eliminations
Condensed consolidating statement of operations and comprehensive income
Net income (loss)	0.1
Other comprehensive income (loss):
Comprehensive loss	0.1
Comprehensive loss attributable to Atlantic Power Corporation	$ 0.1

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