v3.20.1

Basic and diluted earnings per share (Tables) | 3 Months Ended
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Mar. 31, 2020
Basic and diluted earnings per share |
Schedule of diluted net income and potentially dilutive shares utilized in the per share calculation |
Basic |  | 2020 |  | 2019
Numerator: |  |  |  |  |  |
Income attributable to Atlantic Power Corporation |  | $ | 29.5 |  | $ | 8.9
Denominator: |  |  |  |  |  |
Weighted average basic shares outstanding |  |  | 107.2 |  |  | 108.9
Basic earnings per share attributable to Atlantic Power Corporation |  | $ | 0.28 |  | $ | 0.08
Diluted |  |  |  |  |  |
Numerator: |  |  |  |  |  |
Net income attributable to Atlantic Power Corporation |  | $ | 29.5 |  | $ | 8.9
Add: convertible debenture interest expense |  |  | 0.9 |  |  | 1.3
|  |  | 30.4 |  |  | 10.2
Denominator: |  |  |  |  |  |
Weighted average basic shares outstanding |  |  | 107.2 |  |  | 108.9
Convertible debentures |  |  | 27.4 |  |  | 29.1
Share-based compensation |  |  | 0.2 |  |  | 0.6
|  |  | 134.8 |  |  | 138.6
Diluted earnings per share attributable to Atlantic Power Corporation |  | $ | 0.23 |  | $ | 0.07

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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