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Basic and diluted net earnings (loss) per share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share, Basic and Diluted EPS [Abstract]  
Basic and diluted net earnings (loss) per share Basic and diluted net earnings (loss) per share
Basic and diluted earnings per share have been calculated on the basis of net earnings attributable to the common shareholders of the Company and the weighted average number of common shares and bonus deferral restricted share units outstanding. Diluted net earnings per share is computed using the weighted-average number of common shares, additional shares issued subsequent to year-end under the dividend reinvestment plan, PSUs, RSUs and DSUs outstanding during the year and, if dilutive, potential incremental common shares related to the convertible debentures or resulting from the application of the treasury stock method to outstanding share options and Green Equity Units (note 9(c)).
The reconciliation of the net earnings and the weighted average shares used in the computation of basic and diluted earnings per share are as follows:
20222021
Net earnings (loss) attributable to shareholders of AQN$(211,989)$264,859 
Preferred shares, Series A dividend4,786 4,942 
Preferred shares, Series D dividend3,934 4,061 
Net earnings (loss) attributable to common shareholders of AQN – basic and diluted$(220,709)$255,856 
Weighted average number of shares
Basic677,862,207 622,347,677 
Effect of dilutive securities— 6,600,185 
Diluted677,862,207 628,947,862 
This calculation of diluted shares excludes the potential impact of the Green Equity Units and all potential incremental shares that may become issuable pursuant to outstanding securities of the Company for the year ended December 31, 2022, as they are antidilutive. The common shares potentially issuable for the year ended December 31, 2021, as a result of 437,006 share options are excluded from this calculation as they are anti-dilutive.