CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 104.4	$ 85.6
Restricted cash	14.1	13.3
Accounts receivable	42.3	37.3
Current portion of derivative instruments asset (Notes 5 and 6)	2.8	4.0
Inventory	19.5	16.0
Prepayments	7.2	5.9
Income taxes receivable	0.5
Other current assets	2.9	2.8
Total current assets	193.7	164.9
Property, plant, and equipment, net	705.8	733.2
Equity investments in unconsolidated affiliates (Note 3)	204.2	266.8
Power purchase agreements and intangible assets, net	227.4	246.2
Goodwill	36.0	36.0
Derivative instruments asset (Notes 5 and 6)	2.8	4.6
Other assets	4.2	5.1
Total assets	1,374.1	1,456.8
Current liabilities:
Accounts payable	3.3	4.5
Accrued interest	2.0	0.7
Other accrued liabilities	23.9	24.4
Current portion of long-term debt (Note 4)	106.9	111.9
Current portion of derivative instruments liability (Notes 5 and 6)	6.3	7.6
Other current liabilities	3.0	1.8
Total current liabilities	145.4	150.9
Long-term debt, net of unamortized discount and deferred financing costs (Note 4)	707.6	749.2
Convertible debentures, net of unamortized deferred financing costs	102.8	100.4
Derivative instruments liability (Notes 5 and 6)	24.4	21.3
Deferred income taxes	43.6	68.3
Power purchase and fuel supply agreement liabilities, net	24.7	25.3
Other long-term liabilities	56.3	55.5
Total liabilities	1,104.8	1,170.9
Equity
Common shares, no par value, unlimited authorized shares; 115,280,908 and 114,649,888 issued and outstanding at June 30, 2017 and December 31, 2016	1,274.0	1,272.9
Accumulated other comprehensive loss (Note 2)	(141.6)	(148.5)
Retained deficit	(1,084.4)	(1,059.8)
Total Atlantic Power Corporation shareholders' equity	48.0	64.6
Preferred shares issued by a subsidiary company (Note 10)	221.3	221.3
Total equity	269.3	285.9
Total liabilities and equity	$ 1,374.1	$ 1,456.8