v2.4.0.6
CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Project revenue:    
Energy sales $ 69.0 $ 60.0
Energy capacity revenue 44.8 37.0
Other 26.4 21.7
Total project revenue 140.2 118.7
Project expenses:    
Fuel 49.6 46.2
Operations and maintenance 28.3 24.7
Development 1.7  
Depreciation and amortization 41.3 26.5
Total project expenses 120.9 97.4
Project other income (expense):    
Change in fair value of derivative instruments (Notes 5 and 6) 12.6 (57.2)
Equity in earnings of unconsolidated affiliates (Note 3) 7.2 2.9
Interest, net (8.0) (4.0)
Total project other income (expense) 11.8 (58.3)
Project income (loss) 31.1 (37.0)
Administrative and other expenses (income):    
Administration 8.3 7.7
Interest, net 25.9 22.0
Foreign exchange loss (gain) (Note 6) (7.5) 1.0
Total administrative and other expenses (income) 26.7 30.7
Income (loss) from continuing operations before income taxes 4.4 (67.7)
Income tax benefit (Note 7) (2.5) (16.9)
Income (loss) from continuing operations 6.9 (50.8)
Income from discontinued operations, net of tax (Note 10) 0.9 11.6
Net income (loss) 7.8 (39.2)
Net loss attributable to noncontrolling interests (1.9) (0.1)
Net income attributable to preferred shares dividends of a subsidiary company 3.2 3.2
Net income (loss) attributable to Atlantic Power Corporation $ 6.5 $ (42.3)
Basic earnings (loss) per share: (Note 9)    
Income (loss) from continuing operations attributable to Atlantic Power Corporation (in dollars per share) $ 0.04 $ (0.47)
Income from discontinued operations, net of tax (in dollars per share) $ 0.01 $ 0.10
Net income (loss) attributable to Atlantic Power Corporation (in dollars per share) $ 0.05 $ (0.37)
Diluted earnings (loss) per share: (Note 9)    
Income (loss) from continuing operations attributable to Atlantic Power Corporation (in dollars per share) $ 0.04 $ (0.47)
Income from discontinued operations, net of tax (in dollars per share) $ 0.01 $ 0.10
Net income (loss) attributable to Atlantic Power Corporation (in dollars per share) $ 0.05 $ (0.37)
Weighted average number of common shares outstanding: (Note 9)    
Basic (in shares) 119.5 113.6
Diluted (in shares) 119.9 113.6