CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 38.0	$ 74.9
Restricted cash	0.5	7.7
Accounts receivable	26.3	30.4
Insurance recovery receivable (Note 13)	0.8	13.5
Current portion of derivative instruments asset (Notes 6 and 7)		0.7
Inventory	17.7	18.6
Prepayments	4.5	3.8
Income taxes receivable (Note 8)	2.9	1.8
Lease receivable		0.9
Other current assets	0.2	0.4
Total current assets	90.9	152.7
Property, plant, and equipment, net	493.6	502.1
Equity method investments in unconsolidated affiliates (Note 4)	94.8	96.6
Power purchase agreements and intangible assets, net	131.3	144.3
Goodwill	21.3	21.3
Operating lease right-of-use assets (Note 14)	5.4	6.3
Deferred income taxes (Note 8)	11.0	10.4
Other assets	0.6	1.9
Total assets	848.9	935.6
Current liabilities:
Accounts payable	3.7	8.9
Accrued interest	2.3	2.6
Other accrued liabilities	17.5	20.8
Current portion of long-term debt (Note 5)	86.0	76.4
Current portion of derivative instruments liability (Notes 6 and 7)	17.3	12.0
Operating lease liabilities (Note 14)	2.1	2.0
Other current liabilities	0.5	0.2
Total current liabilities	129.4	122.9
Long-term debt, net of unamortized discount and deferred financing costs (Note 5)	420.1	473.5
Convertible debentures, net of discount and unamortized deferred financing costs	77.7	81.1
Derivative instruments liability (Notes 6 and 7)	14.1	15.9
Deferred income taxes (Note 8)	24.9	23.7
Power purchase agreements and intangible liabilities, net	18.4	19.8
Asset retirement obligations, net	50.7	51.5
Operating lease liabilities (Note 14)	3.8	4.8
Other long-term liabilities	4.1	4.7
Total liabilities	743.2	797.9
Equity
Common shares, no par value, unlimited authorized shares; 91,952,348 and 108,675,294 issued and outstanding at June 30, 2020 and December 31, 2019 (Note 11)	1,224.6	1,259.9
Accumulated other comprehensive loss (Note 3)	(147.3)	(140.7)
Retained deficit	(1,140.4)	(1,164.2)
Total Atlantic Power Corporation shareholders' deficit	(63.1)	(45.0)
Preferred shares issued by a subsidiary company (Note 11)	168.8	182.7
Total equity	105.7	137.7
Total liabilities and equity	$ 848.9	$ 935.6