Equity (Tables)

6 Months Ended

Jun. 30, 2020

Equity

Schedule of reconciliation of equity

					Accumulated		Total		Preferred
					Other		Atlantic Power		Shares of a
	Common		Retained		Comprehensive		Corporation		Subsidiary		Total
	Shares		Deficit		(loss) income		Shareholders' Deficit		Company		Equity
Balance at March 31, 2020	$	1,252.1	$	(1,134.7)	$	(152.2)	$	(34.8)	$	168.8	$	134.0
Net (loss) income		—		(5.7)		—		(5.7)		1.7		(4.0)
Share-based compensation		0.4		—		—		0.4		—		0.4
Common share repurchases		(27.9)		—		—		(27.9)		—		(27.9)
Dividends on preferred shares of a subsidiary company - Series 1 (Cdn$0.303125 per share)		—		—		—		—		(0.8)		(0.8)
Dividends on preferred shares of a subsidiary company - Series 2 (Cdn$0.358688 per share)		—		—		—		—		(0.7)		(0.7)
Dividends on preferred shares of a subsidiary company - Series 3 (Cdn$0.363146 per share)		—		—		—		—		(0.2)		(0.2)
Foreign currency translation adjustments		—		—		4.9		4.9		—		4.9
Balance at June 30, 2020	$	1,224.6	$	(1,140.4)	$	(147.3)	$	(63.1)	$	168.8	$	105.7

					Accumulated		Total		Preferred
					Other		Atlantic Power		Shares of a
	Common		Retained		Comprehensive		Corporation		Subsidiary		Total
	Shares		Deficit		(loss) income		Shareholders' Equity		Company		Equity
Balance at March 31, 2019	$	1,261.4	$	(1,112.7)	$	(144.1)	$	4.6	$	183.2	$	187.8
Net income		—		1.2		—		1.2		1.7		2.9
Share-based compensation		0.2		—		—		0.2		—		0.2
Common share repurchases		(0.7)		—		—		(0.7)		—		(0.7)
Preferred share repurchases		—		—		—		—		(0.2)		(0.2)
Dividends on preferred shares of a subsidiary company - Series 1 (Cdn$0.303125 per share)		—		—		—		—		(0.9)		(0.9)
Dividends on preferred shares of a subsidiary company - Series 2 (Cdn$0.348125 per share)		—		—		—		—		(0.6)		(0.6)
Dividends on preferred shares of a subsidiary company - Series 3 (Cdn$0.363697 per share)		—		—		—		—		(0.3)		(0.3)
Realized and unrealized loss on hedging activities, net of tax		—		—		(0.1)		(0.1)		—		(0.1)
Foreign currency translation adjustments		—		—		2.7		2.7		—		2.7
Balance at June 30, 2019	$	1,260.9	$	(1,111.5)	$	(141.5)	$	7.9	$	182.9	$	190.8

					Accumulated		Total		Preferred
					Other		Atlantic Power		Shares of a
	Common		Retained		Comprehensive		Corporation		Subsidiary		Total
	Shares		Deficit		(loss) income		Shareholders' Deficit		Company		Equity
Balance at January 1, 2020	$	1,259.9	$	(1,164.2)	$	(140.7)	$	(45.0)	$	182.7	$	137.7
Net income (loss)		—		23.8		—		23.8		(4.1)		19.7
Share-based compensation		0.8		—		—		0.8		—		0.8
Common share repurchases		(36.1)		—		—		(36.1)		—		(36.1)
Preferred share repurchases		—		—		—		—		(6.4)		(6.4)
Dividends on preferred shares of a subsidiary company - Series 1 (Cdn$0.606250 per share)		—		—		—		—		(1.6)		(1.6)
Dividends on preferred shares of a subsidiary company - Series 2 (Cdn$0.717376 per share)		—		—		—		—		(1.3)		(1.3)
Dividends on preferred shares of a subsidiary company - Series 3 (Cdn$0.726488 per share)		—		—		—		—		(0.5)		(0.5)
Realized and unrealized loss on hedging activities, net of tax		—		—		(0.3)		(0.3)		—		(0.3)
Foreign currency translation adjustments		—		—		(6.3)		(6.3)		—		(6.3)
Balance at June 30, 2020	$	1,224.6	$	(1,140.4)	$	(147.3)	$	(63.1)	$	168.8	$	105.7

					Accumulated		Total		Preferred
					Other		Atlantic Power		Shares of a
	Common		Retained		Comprehensive		Corporation		Subsidiary		Total
	Shares		Deficit		(loss) income		Shareholders' Equity		Company		Equity
Balance at January 1, 2019	$	1,260.9	$	(1,121.6)	$	(146.2)	$	(6.9)	$	199.3	$	192.4
Net income (loss)		—		10.1		—		10.1		(4.8)		5.3
Share-based compensation		0.8		—		—		0.8		—		0.8
Common share repurchases		(0.8)		—		—		(0.8)		—		(0.8)
Preferred share repurchases		—		—		—		—		(7.9)		(7.9)
Dividends on preferred shares of a subsidiary company - Series 1 (Cdn$0.606250 per share)		—		—		—		—		(1.8)		(1.8)
Dividends on preferred shares of a subsidiary company - Series 2 (Cdn$0.696250 per share)		—		—		—		—		(1.2)		(1.2)
Dividends on preferred shares of a subsidiary company - Series 3 (Cdn$0.726590 per share)		—		—		—		—		(0.7)		(0.7)
Realized and unrealized gain on hedging activities, net of tax		—		—		(0.2)		(0.2)		—		(0.2)
Foreign currency translation adjustments		—		—		4.9		4.9		—		4.9
Balance at June 30, 2019	$	1,260.9	$	(1,111.5)	$	(141.5)	$	7.9	$	182.9	$	190.8