Algonquin Power & Utilities (AQN) 6-K 10 Aug 23 2023 Q2 Unaudited Interim Consolidated Financial Statements of Financial data

Cover Page

Cover Page	6 Months Ended
	Jun. 30, 2023
Cover [Abstract]
Document Type	6-K
Entity File Number	001-37946
Entity Registrant Name	Algonquin Power & Utilities Corp.
Entity Address, Address Line One	354 Davis Road
Entity Address, City or Town	Oakville
Entity Address, State or Province	ON
Entity Address, Postal Zip Code	L6J 2X1
Entity Address, Country	CA
Amendment Flag	false
Document Period End Date	Jun. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001174169
Current Fiscal Year End Date	--12-31

Unaudited Interim Consolidated

Unaudited Interim Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Other revenue	$ 627,871	$ 619,385	$ 1,406,498	$ 1,352,622
Expenses
Administrative expenses	25,692	20,107	43,525	37,559
Depreciation and amortization	118,448	112,547	240,089	232,511
Loss on foreign exchange	6,379	4,464	7,815	4,726
Costs and expenses, total	534,157	512,350	1,170,310	1,109,541
Gain on sale of renewable assets	0	0	0	1,200
Operating income	93,714	107,035	236,188	244,281
Interest expense (note 7)	(89,663)	(64,573)	(171,581)	(122,516)
Loss from long-term investments (note 6)	(277,696)	(113,380)	(57,684)	(124,069)
Other net losses (note 16)	(40,367)	(8,652)	(43,829)	(13,382)
Pension and other post-employment non-service costs (note 8)	(5,306)	(2,258)	(10,267)	(4,836)
Gain (loss) on derivative financial instruments (note 21(b)(iv))	1,039	(3,313)	3,205	(2,569)
Loss before income taxes	(318,279)	(85,141)	(43,968)	(23,091)
Income tax recovery (note 15)
Current	(6,300)	(3,409)	(12,800)	(9,713)
Deferred	62,258	26,228	44,057	23,080
Income tax expense	55,958	22,819	31,257	13,367
Net loss	(262,321)	(62,322)	(12,711)	(9,724)
Non-controlling interests	15,439	32,021	42,018	72,963
Non-controlling interests held by related party	(6,349)	(3,086)	(12,399)	(5,661)
Net effect of non-controlling interests	9,090	28,935	29,619	67,302
Net earnings (loss) attributable to shareholders of Algonquin Power & Utilities Corp.	(253,231)	(33,387)	16,908	57,578
Preferred shares, Series A and preferred shares, Series D dividend (note 12)	2,080	2,220	4,172	4,440
Net earnings (loss) attributable to common shareholders of Algonquin Power & Utilities Corp. basic (in shares)	(255,311)	(35,607)	12,736	53,138
Net earnings (loss) attributable to common shareholders of Algonquin Power & Utilities Corp. - diluted (in shares)	$ (255,311)	$ (35,607)	$ 12,736	$ 53,138
Basic net earnings (loss) per share (USD per share)	$ (0.37)	$ (0.05)	$ 0.02	$ 0.08
Diluted net earnings (loss) per share (USD per share)	$ (0.37)	$ (0.05)	$ 0.02	$ 0.08
Regulated electricity distribution
Revenue
Other revenue	$ 326,833	$ 295,558	$ 642,435	$ 576,252
Expenses
Expenses	98,337	104,125	223,917	203,308
Regulated natural gas distribution
Revenue
Other revenue	109,539	121,911	380,677	385,345
Expenses
Expenses	36,180	51,802	173,881	184,368
Regulated water reclamation and distribution
Revenue
Other revenue	95,861	89,626	183,282	168,257
Expenses
Expenses	3,857	3,329	7,726	6,152
Non-regulated energy sales
Revenue
Other revenue	71,694	92,141	150,410	177,901
Expenses
Expenses	3,782	9,646	11,588	22,585
Other revenue
Revenue
Other revenue	23,944	20,149	49,694	44,867
Operating expenses
Expenses
Expenses	$ 241,482	$ 206,330	$ 461,769	$ 418,332

Unaudited Interim Consolidate_2

Unaudited Interim Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (262,321)	$ (62,322)	$ (12,711)	$ (9,724)
Other comprehensive income (loss) (“OCI”):
Foreign currency translation adjustment, net of tax recovery of $3,418 and $3,038 (2022 - tax expense of $1,037 and tax recovery of $2,273), respectively (notes 21(b)(iii) and 21(b)(iv))	130	(48,440)	15,555	(40,595)
Change in fair value of cash flow hedges, net of tax expense of $3,737 and tax recovery of $178 (2022 - tax recovery of $7,596 and $29,894), respectively (note 21(b)(ii))	36,421	(12,879)	54,286	(71,765)
Change in pension and other post-employment benefits, net of tax recovery of $281 and $445 (2022 - tax recovery of $32 and $30), respectively	(823)	(93)	(1,303)	(86)
OCI, net of tax	35,728	(61,412)	68,538	(112,446)
Comprehensive income (loss)	(226,593)	(123,734)	55,827	(122,170)
Comprehensive loss attributable to the non-controlling interests	(8,693)	(30,375)	(29,407)	(68,055)
Comprehensive income (loss) attributable to shareholders of Algonquin Power & Utilities Corp.	$ (217,900)	$ (93,359)	$ 85,234	$ (54,115)

Unaudited Interim Consolidate_3

Unaudited Interim Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustment, net of tax (recovery) and expense	$ (3,418)	$ 1,037	$ (3,038)	$ (2,273)
Change in fair value of cash flow hedges, net of tax (recovery) and expense	3,737	(7,596)	(178)	(29,894)
Change in unrealized pension and other post-employment expense, net of tax (expense) and recovery	$ 281	$ 32	$ 445	$ 30

Unaudited Interim Consolidate_4

Unaudited Interim Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 100,258	$ 57,623
Trade and other receivables, net (note 4)	492,844	528,057
Fuel and natural gas in storage	75,693	95,350
Supplies and consumables inventory	152,118	129,571
Regulatory assets (note 5)	136,159	190,393
Prepaid expenses	60,738	58,653
Derivative instruments (note 21)	11,228	12,270
Other assets	19,958	22,564
Assets, current, total	1,048,996	1,094,481
Property, plant and equipment, net	12,336,931	11,944,885
Intangible assets, net	97,080	96,683
Goodwill	1,330,987	1,320,579
Regulatory assets (note 5)	1,125,156	1,081,108
Long-term investments (note 6)
Investments carried at fair value	1,213,718	1,344,207
Other long-term investments	507,045	462,325
Derivative instruments (note 21)	66,333	71,630
Deferred income taxes	131,622	84,416
Other assets	110,845	127,299
Assets	17,968,713	17,627,613
Current liabilities:
Accounts payable	194,853	186,080
Accrued liabilities	467,235	555,792
Dividends payable (note 12)	75,223	125,655
Regulatory liabilities (note 5)	74,867	69,865
Long-term debt (note 7)	513,803	423,274
Other long-term liabilities (note 9)	119,495	134,212
Derivative instruments (note 21)	15,687	32,491
Other liabilities	10,317	7,091
Liabilities, current, total	1,471,480	1,534,460
Long-term debt (note 7)	7,569,344	7,088,743
Regulatory liabilities (note 5)	551,708	558,317
Deferred income taxes	580,211	565,639
Derivative instruments (note 21)	86,925	137,830
Pension and other post-employment benefits obligation	124,478	125,579
Other long-term liabilities (note 9)	430,379	461,230
Liabilities, noncurrent, total	9,343,045	8,937,338
Redeemable non-controlling interests (note 14)
Redeemable non-controlling interest, held by related party (note 13(b))	307,955	307,856
Redeemable non-controlling interests	10,767	11,520
Redeemable non-controlling interests, total	318,722	319,376
Equity:
Preferred shares	184,299	184,299
Common shares (note 10(a))	6,224,770	6,183,943
Additional paid-in capital	4,279	9,413
Deficit	(1,136,208)	(997,945)
Accumulated other comprehensive loss (“AOCI”) (note 11)	(91,737)	(160,063)
Total equity attributable to shareholders of Algonquin Power & Utilities Corp.	5,185,403	5,219,647
Non-controlling interests
Non-controlling interests - tax equity partnership units	1,261,067	1,225,608
Other non-controlling interests	337,825	333,362
Non-controlling interest, held by related party (note 13(c))	51,171	57,822
Non-controlling interests, total	1,650,063	1,616,792
Total equity	6,835,466	6,836,439
Commitments and contingencies (note 19)
Liabilities and equity, total	$ 17,968,713	$ 17,627,613

Unaudited Interim Consolidate_5

Unaudited Interim Consolidated Statement of Equity - USD ($) $ in Thousands	Total	Common shares	Preferred shares	Additional paid-in capital	Deficit	AOCI	Non- controlling interests
Beginning Balance at Dec. 31, 2021	$ 7,382,079	$ 6,032,792	$ 184,299	$ 2,007	$ (288,424)	$ (71,677)	$ 1,523,082
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(9,724)				57,578
Net earnings (loss), non-controlling interests	67,302						(67,302)
Effect of redeemable non-controlling interests not included in equity (note 14)	(2,725)						(2,725)
OCI	(112,446)					(111,693)	(753)
Dividends declared and distributions to non-controlling interests	(235,658)				(199,870)		(35,788)
Dividends and issuance of shares under dividend reinvestment plan	0	42,779			(42,779)
Common shares issued upon conversion of convertible debentures	6	6
Contributions received from non-controlling interests, net of cost	6,208						6,208
Common shares issued under employee share purchase plan	2,455	2,455
Share-based compensation	5,664			5,664
Common shares issued pursuant to share-based awards	(4,792)	4,479		(7,410)	(1,861)
Ending Balance at Jun. 30, 2022	7,031,067	6,082,511	184,299	261	(475,356)	(183,370)	1,422,722
Beginning Balance at Dec. 31, 2021	7,382,079	6,032,792	184,299	2,007	(288,424)	(71,677)	1,523,082
Increase (Decrease) in Stockholders' Equity [Roll Forward]
OCI	(90,036)
Ending Balance at Dec. 31, 2022	6,836,439	6,183,943	184,299	9,413	(997,945)	(160,063)	1,616,792
Beginning Balance at Mar. 31, 2022	7,274,807	6,057,249	184,299	1,158	(315,879)	(123,398)	1,471,378
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(62,322)				(33,387)
Net earnings (loss), non-controlling interests	28,935						(28,935)
Effect of redeemable non-controlling interests not included in equity (note 14)	(1,529)						(1,529)
OCI	(61,412)					(59,972)	(1,440)
Dividends declared and distributions to non-controlling interests	(122,846)				(103,616)		(19,230)
Dividends and issuance of shares under dividend reinvestment plan	0	21,239			(21,239)
Contributions received from non-controlling interests, net of cost	2,478						2,478
Common shares issued under employee share purchase plan	1,149	1,149
Share-based compensation	4,042			4,042
Common shares issued pursuant to share-based awards	(3,300)	2,874		(4,939)	(1,235)
Ending Balance at Jun. 30, 2022	7,031,067	6,082,511	184,299	261	(475,356)	(183,370)	1,422,722
Beginning Balance at Dec. 31, 2022	6,836,439	6,183,943	184,299	9,413	(997,945)	(160,063)	1,616,792
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(12,711)				16,908
Net earnings (loss), non-controlling interests	29,619						(29,619)
Effect of redeemable non-controlling interests not included in equity (note 14)	(11,737)						(11,737)
OCI	68,538					68,326	212
Dividends declared and distributions to non-controlling interests	(157,969)				(124,451)		(33,518)
Dividends and issuance of shares under dividend reinvestment plan	0	30,482			(30,482)
Common shares issued upon conversion of convertible debentures	11	11
Contributions received from non-controlling interests, net of cost	107,933						107,933
Common shares issued under employee share purchase plan	3,113	3,113
Share-based compensation	4,695			4,695
Common shares issued pursuant to share-based awards	(2,846)	7,221		(9,829)	(238)
Ending Balance at Jun. 30, 2023	6,835,466	6,224,770	184,299	4,279	(1,136,208)	(91,737)	1,650,063
Beginning Balance at Mar. 31, 2023	7,055,820	6,223,301	184,299	776	(805,515)	(127,068)	1,580,027
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(262,321)				(253,231)
Net earnings (loss), non-controlling interests	9,090						(9,090)
Effect of redeemable non-controlling interests not included in equity (note 14)	(6,018)						(6,018)
OCI	35,728					35,331	397
Dividends declared and distributions to non-controlling interests	(91,553)				(77,449)		(14,104)
Common shares issued upon conversion of convertible debentures	11	11
Contributions received from non-controlling interests, net of cost	98,851						98,851
Common shares issued under employee share purchase plan	1,405	1,405
Share-based compensation	3,602			3,602
Common shares issued pursuant to share-based awards	(59)	53		(99)	(13)
Ending Balance at Jun. 30, 2023	$ 6,835,466	$ 6,224,770	$ 184,299	$ 4,279	$ (1,136,208)	$ (91,737)	$ 1,650,063

Unaudited Interim Consolidate_6

Unaudited Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating activities
Net loss	$ (262,321)	$ (62,322)	$ (12,711)	$ (9,724)
Adjustments and items not affecting cash:
Depreciation and amortization	118,448	112,547	240,089	232,511
Deferred taxes	(62,258)	(26,228)	(44,057)	(23,080)
Initial value and unrealized gain on derivative financial instruments	(4,882)	(334)	(9,851)	(402)
Share-based compensation	3,199	3,860	3,895	3,495
Cost of equity funds used for construction purposes	(568)	(458)	(1,226)	(967)
Change in value of investments carried at fair value	311,410	143,522	132,026	184,029
Pension and post-employment expense in excess of (lower than) contributions	2,176	(823)	119	(6,436)
Distributions received from equity investments, net of income	5,588	1,282	3,554	3,384
Other	38,232	931	36,195	3,536
Net change in non-cash operating items (note 20)	112,380	(36,640)	(53,356)	(84,788)
Net cash provided by (used in) operating activities, total	261,404	135,337	294,677	301,558
Financing activities
Increase in long-term debt	224,664	394,008	654,648	2,345,013
Repayments of long-term debt	(194,403)	(220,424)	(398,179)	(897,109)
Net change in commercial paper	(1,187)	165,000	91,613	(173,700)
Issuance of common shares, net of costs	1,405	1,149	3,113	2,455
Cash dividends on common shares	(75,493)	(94,177)	(171,386)	(187,558)
Dividends on preferred shares	(2,080)	(2,220)	(4,172)	(4,440)
Contributions from non-controlling interests and redeemable non-controlling interests (note 3)	98,955	0	98,955	0
Production-based cash contributions from non-controlling interest	0	2,478	9,082	6,208
Distributions to non-controlling interests	(20,746)	(16,760)	(33,084)	(25,109)
Payments upon settlement of derivatives	0	0	0	(26,254)
Shares surrendered to fund withholding taxes on exercised share options	0	(3,494)	(568)	(4,120)
Increase in other long-term liabilities	6,695	2,069	11,125	7,268
Decrease in other long-term liabilities	(255)	(41,339)	(20,329)	(42,573)
Net cash provided by (used in) financing activities, total	37,311	177,936	228,518	981,721
Investing activities
Additions to property, plant and equipment and intangible assets	(245,209)	(247,538)	(414,958)	(575,237)
Increase in long-term investments	(41,774)	(49,681)	(89,379)	(96,938)
Acquisitions of operating entities	0	(86)	0	(632,797)
Increase in other assets	(130)	(10,340)	(1,980)	(12,804)
Receipt of principal on development loans receivable	0	201	0	323
Decrease in long-term investments	11,749	517	11,749	2,920
Net cash provided by (used in) investing activities, total	(275,364)	(306,927)	(494,568)	(1,314,533)
Effect of exchange rate differences on cash and restricted cash	369	(2,408)	872	(1,846)
Increase (decrease) in cash, cash equivalents and restricted cash	23,720	3,938	29,499	(33,100)
Cash, cash equivalents and restricted cash, beginning of period	106,964	124,351	101,185	161,389
Cash, cash equivalents and restricted cash, end of period	130,684	128,289	130,684	128,289
Supplemental disclosure of cash flow information:
Cash paid during the period for interest expense	75,489	52,268	178,201	113,874
Cash paid during the period for income taxes	2,097	5,147	4,138	6,357
Cash received during the period for distributions from equity investments	28,330	30,762	56,611	61,554
Non-cash financing and investing activities:
Property, plant and equipment acquisitions in accruals	145,594	127,525	145,594	127,525
Issuance of common shares under dividend reinvestment plan and share-based compensation plans	1,458	25,262	40,816	49,713
Related Party
Financing activities
Distributions to non-controlling interests, related party (note 14)	$ (244)	$ (8,354)	$ (12,300)	$ (18,360)

Notes to the Unaudited Interim

Notes to the Unaudited Interim Consolidated Financial Statements	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Notes to the Unaudited Interim Consolidated Financial Statements	Algonquin Power & Utilities Corp. (“AQN” or the “Company”) is an incorporated entity under the Canada Business Corporations Act

Significant accounting policies

Significant accounting policies	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Significant accounting policies	Significant accounting policies (a) Basis of preparation The accompanying unaudited interim consolidated financial statements and notes have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and follow disclosure required under Regulation S-X provided by the U.S. Securities and Exchange Commission. In the opinion of management, the unaudited interim consolidated financial statements include all adjustments that are of a recurring nature and necessary for a fair presentation of the results of interim operations. The significant accounting policies applied to these unaudited interim consolidated financial statements of AQN are consistent with those disclosed in the consolidated financial statements of AQN as of and for the year ended December 31, 2022. (b) Seasonality AQN's operating results are subject to seasonal fluctuations that could materially impact quarter-to-quarter operating results and, thus, one quarter's operating results are not necessarily indicative of a subsequent quarter's operating results. Where decoupling mechanisms exist, total volumetric revenue is prescribed by the applicable regulatory authority and is not affected by usage. AQN’s electrical distribution utilities can experience higher or lower demand in the summer or winter depending on the specific regional weather and industry characteristics. AQN’s water and wastewater utility assets’ revenues fluctuate depending on the demand for water, which is normally higher during drier and hotter months of the summer. During the winter period, natural gas distribution utilities generally experience higher demand than during the summer period. AQN’s hydroelectric energy assets are primarily “run-of-river” and, as such, fluctuate with the natural water flows. During the winter and summer periods, flows are generally slower, while during the spring and fall periods flows are heavier. For AQN's wind energy assets, wind resources are typically stronger in spring, fall and winter, and weaker in summer. AQN's solar energy assets generally experience greater insolation in summer, weaker in winter. (c) Foreign currency translation

Recently issued accounting pron

Recently issued accounting pronouncements	6 Months Ended
	Jun. 30, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recently issued accounting pronouncements	Recently issued accounting pronouncements (a) Recently adopted accounting pronouncements The Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2022-04, Liabilities — Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations , which requires that a buyer in a supplier finance program disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. See note 21(c) for details. (b) Recently issued accounting guidance not yet adopted The FASB issued ASU 2023-02, Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method — a consensus of the Emerging Issues Task Force, which permits a reporting entity, if certain conditions are met, to elect to account for its tax equity investments by using the proportional amortization method regardless of the program from which it receives income tax credits. The amendments in this update are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the applicability and potential impact of the new guidance.

Business acquisition

Business acquisition	6 Months Ended
	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Business acquisition	Business acquisition (a) Kentucky Power Company and AEP Kentucky Transmission Company, Inc . On October 26, 2021, Liberty Utilities Co., an indirect subsidiary of AQN, entered into an agreement (the “Kentucky Acquisition Agreement”) with American Electric Power Company, Inc. (“AEP”) and AEP Transmission Company, LLC to acquire Kentucky Power Company and AEP Kentucky Transmission Company, Inc. (the “Kentucky Power Transaction”). On April 17, 2023, Liberty Utilities Co. mutually agreed with AEP and AEP Transmission Company, LLC to terminate the Kentucky Acquisition Agreement. The Company recognized other net losses of $43,808 for the three months ended June 30, 2023 and $46,527 for the six months ended June 30, 2023 related to a write-off of costs incurred in preparation for the Kentucky Power Transaction and the termination of the Kentucky Acquisition Agreement. See note 16 for details. (b) Acquisition of Deerfield II Wind Facility On June 15, 2023, Algonquin Power Fund (America) Inc., a wholly owned subsidiary of the Company, acquired the remaining 50% ownership in Deerfield II wind farm for consideration of $23,142. The transaction has been accounted for as an asset acquisition. Subsequent to acquisition, the tax equity investors provided additional funding of $98,955, and a third-party construction loan of $158,550 was repaid. The following table summarizes the allocation of the aggregate purchase price to the assets acquired and liabilities assumed at the acquisition dates. Deerfield II Working capital $ (10,709) Property, plant and equipment 194,419 Long-term debt (157,935) Asset retirement obligation (1,030) Deferred tax liability (1,603) Total net assets acquired 23,142 Cash and cash equivalents 1,662 Net assets acquired, net of cash and cash equivalents $ 21,480

Accounts receivable

Accounts receivable	6 Months Ended
	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Accounts receivable	Accounts receivableAccounts receivable as of June 30, 2023 include unbilled revenue of $89,745 (December 31, 2022 - $149,015) from the Company’s regulated utilities. Accounts receivable as of June 30, 2023 are presented net of allowance for doubtful accounts of $28,646 (December 31, 2022 - $24,857).

Regulatory matters

Regulatory matters	6 Months Ended
	Jun. 30, 2023
Regulated Operations [Abstract]
Regulatory matters	Regulatory matters The operating companies within the Regulated Services Group are subject to regulation by the respective jurisdictions in which they operate. The respective Regulators have jurisdiction with respect to rate, service, accounting policies, issuance of securities, acquisitions and other matters. Except for Suralis (formerly called ESSAL), these utilities operate under cost-of-service regulation as administered by these authorities. The Company’s regulated utility operating companies are accounted for under the principles of ASC 980, Regulated Operations . Under ASC 980, regulatory assets and liabilities that would not be recorded under U.S. GAAP for non-regulated entities are recorded to the extent that they represent incurred charges or credits that are probable of being recovered from or refunded to customers through the rate setting process. At any given time, the Company can have several regulatory proceedings underway. The financial effects of these proceedings are reflected in the unaudited interim consolidated financial statements based on regulatory approval obtained to the extent that there is a financial impact during the applicable reporting period. The following regulatory proceedings were recently completed: Utility State or country Regulatory proceeding type Details CalPeco Electric System California General rate review On April 27, 2023, the California Public Utilities Commission (“CPUC”) issued a final order approving a revenue increase of $26,979. New rates became effective in June 2023 retroactive to January 2022 . The retroactive impact of this final order was recorded in the second quarter of 2023. St. Lawrence Gas New York General rate review On June 22, 2023 , the New York State Department of Public Services issued an Order authorizing a revenue increase of $5,249 to be implemented over three years. New rates became effective July 1, 2023. Empire Electric Missouri Securitization In February 2021, the Company's operations were impacted by extreme winter storm conditions experienced in Texas and parts of the central U.S. (“the Midwest Extreme Weather Event”). On January 19, 2022, Empire Electric filed a petition for securitization of the costs associated with the impact of the Midwest Extreme Weather Event. On March 21, 2022, Empire Electric filed a petition for securitization of the costs associated with the retirement of the Asbury generating plant. On August 18, 2022, and September 22, 2022, the Missouri Public Service Commission (“the MPSC”) issued and amended, respectively, a Report and Order authorizing Empire Electric to securitize approximately $290,383 in qualified extraordinary costs (Midwest Extreme Weather Event), energy transition costs (Asbury) and upfront financing costs associated with the proposed securitization. Empire Electric filed an appeal of the MPSC order on November 10, 2022. On August 1, 2023 the court affirmed the amount eligible for securitization of $290,383 as compared to the Company's original aggregate request of $362,420. The Company has until August 16, 2023 to move for rehearing at the Court of Appeals, and/or file a request for transfer to the Missouri Supreme Court. If the Company determines to proceed with securitization without further appeal, the Company may incur a one-time net loss of approximately $45,000. 5. Regulatory matters (continued) Regulatory assets and liabilities consist of the following: June 30, December 31, 2023 2022 Regulatory assets Fuel and commodity cost adjustments 321,806 388,294 Rate adjustment mechanism 185,395 136,198 Retired generating plant 176,650 174,609 Deferred capitalized costs 98,438 90,121 Income taxes 98,173 97,414 Pension and post-employment benefits 79,925 80,736 Environmental remediation 68,376 70,529 Wildfire mitigation and vegetation management 51,116 66,156 Clean energy and other customer programs 31,772 28,145 Asset retirement obligation 26,786 27,172 Debt premium 22,056 24,888 Cost of removal 11,084 11,084 Rate review costs 8,621 9,481 Long-term maintenance contract 5,917 6,504 Other 75,200 60,170 Total regulatory assets $ 1,261,315 $ 1,271,501 Less: current regulatory assets (136,159) (190,393) Non-current regulatory assets $ 1,125,156 $ 1,081,108 Regulatory liabilities Income taxes $ 302,770 $ 312,671 Cost of removal 191,541 191,173 Pension and post-employment benefits 75,333 68,085 Fuel and commodity cost adjustments 24,376 25,620 Clean energy and other customer programs 12,710 11,572 Rate adjustment mechanism 1,651 343 Other 18,194 18,718 Total regulatory liabilities $ 626,575 $ 628,182 Less: current regulatory liabilities (74,867) (69,865) Non-current regulatory liabilities $ 551,708 $ 558,317

Long-term investments

Long-term investments	6 Months Ended
	Jun. 30, 2023
Disclosure Long Term Investments And Notes Receivable [Abstract]
Long-term investments	Long-term investments Long-term investments consist of the following: June 30, December 31, 2023 2022 Long-term investments carried at fair value Atlantica $ 1,147,691 $ 1,268,140 Atlantica Yield Energy Solutions Canada Inc. 64,228 74,083 Other 1,799 1,984 $ 1,213,718 $ 1,344,207 Other long-term investments Equity-method investees (a) $ 388,516 $ 381,802 Development loans receivable from equity-method investees (a) 91,044 52,923 Other 27,485 27,600 $ 507,045 $ 462,325 Income (loss) from long-term investments for the three and six months ended June 30 is as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Fair value gain (loss) on investments carried at fair value Atlantica $ (299,653) $ (137,586) $ (120,449) $ (171,370) Atlantica Yield Energy Solutions Canada Inc. (11,763) $ (5,815) (11,567) (12,395) Other 6 $ (121) (10) (264) $ (311,410) $ (143,522) $ (132,026) $ (184,029) Dividend and interest income from investments carried at fair value Atlantica $ 21,788 $ 21,543 $ 43,577 $ 43,087 Atlantica Yield Energy Solutions Canada Inc. 4,821 5,397 10,678 12,691 Other 7 12 17 10 $ 26,616 $ 26,952 $ 54,272 $ 55,788 Other long-term investments Equity method loss (2,434) (2,918) (153) (7,449) Interest and other income 9,532 6,108 20,223 11,621 $ 7,098 $ 3,190 $ 20,070 $ 4,172 Loss from long-term investments $ (277,696) $ (113,380) $ (57,684) $ (124,069) (a) Equity-method investees and development loans receivable from equity investees The Renewable Energy Group has non-controlling interests in operating renewable energy facilities and projects under construction. The Regulated Services Group has non-controlling interest in a power transmission line project under construction and other non-regulated operating entities owned by its utilities. The Liberty Development JV Inc. platform for non-regulated renewable energy, water and other sectors is reported under Corporate. In total, the Company has non-controlling interests in various corporations, partnerships and joint ventures with a total carrying value of $388,516 (December 31, 2022 - $381,802), including investments in variable interest entities ("VIEs") of $121,176 (December 31, 2022 - $122,752). 6. Long-term investments (continued) (a) Equity-method investees and development loans receivable from equity investees (continued) During t he six months ended June 30, 2023, t he Company made capital contributi ons of $10,390 to the Texas Coastal Wind Facilities (Stella, Cranell, East Raymond and West Raymond) and $9,823 to p rojects under construction. Summarized combined information for AQN's investments in partnerships and joint ventures is as follows: June 30, December 31, 2023 2022 Total assets $ 2,749,895 $ 2,740,132 Total liabilities 1,522,656 1,507,079 Net assets $ 1,227,239 $ 1,233,053 AQN's ownership interest in the entities 331,600 332,663 Difference between investment carrying amount and underlying equity in net assets (a) 56,916 49,139 AQN's investment carrying amount for the entities $ 388,516 $ 381,802 (a) The difference between the investment carrying amount and the underlying equity in net assets relates primarily to development fees, interest capitalized while the projects are under construction, the fair value of guarantees provided by the Company in regards to the investments and transaction costs. Summarized combined information for AQN's equity method investees (presented at 100%) is as follows: Six months ended June 30 2023 2022 Revenue $ 49,467 $ 20,455 Net income (loss) $ 1,836 $ (30,246) Other comprehensive loss (a) $ (2,807) $ (125,811) Net loss attributable to AQN $ (153) $ (7,449) Other comprehensive loss attributable to AQN (a) $ (2,076) $ (67,352) (a) Other comprehensive loss represents the Company’s proportion of the change in fair value, recorded in OCI at the investee level, on energy derivative financial instruments designated as a cash flow hedge. 6. Long-term investments (continued) (a) Equity-method investees and development loans receivable from equity investees (continued) Except for Liberty Development Energy Solutions B.V. (“Liberty Development Energy Solutions”), the development projects are considered VIEs due to the level of equity at risk and the disproportionate voting and economic interests of the shareholders. The Company has committed loan and credit support facilities with some of its equity investees. During construction, the Company has agreed to provide cash advances and credit support for the continued development and construction of the equity investees' projects. As of June 30, 2023, t he Company had issued letters of credit and guarantees of performance obligations under: a security of performance for a development opportunity; wind turbine and solar panel supply agreements; interconnection agreements; engineering, procurement and construction agreements; energy purchase agreements; and construction loan agreements. The fair value of the support provided to all equity-investees a s of June 30, 2023 amount s to $9,129 (December 31, 2022 - $8,824). Summarized combined information for AQN's VIEs is as follows: June 30, December 31, 2023 2022 AQN's maximum exposure in regards to VIEs Carrying amount $ 121,176 $ 122,752 Development loans receivable 91,044 52,923 Performance guarantees and other commitments on behalf of VIEs 674,874 658,224 $ 887,094 $ 833,899 The commi tments are presented on a gross basis assuming no recoverable value in the assets of the VIEs. In addition, as of June 30, 2023, the Company had issued $798,717 in letters of credit and guarantees of performance obligations under energy purchase agreements and decommissioning obligations on behalf of operating equity-method investees that are not considered VIEs.

Long-term debt

Long-term debt	6 Months Ended
	Jun. 30, 2023
Debt Disclosure [Abstract]
Long-term debt	Long-term debt Long-term debt consists of the following: Borrowing type Weighted average coupon Maturity Par value June 30, December 31, 2023 2022 Senior unsecured revolving credit facilities (a) — 2024-2028 N/A $ 801,929 $ 351,786 Senior unsecured bank credit — 2023-2031 N/A 788,906 773,643 Commercial paper — 2024 N/A 498,613 407,000 U.S. dollar borrowings Senior unsecured notes 1.18 % 2026 $ 1,150,000 1,143,856 1,142,814 Senior unsecured notes (b) 3.38 % 2023-2047 $ 1,490,000 1,481,682 1,496,101 Senior unsecured utility notes 6.34 % 2023-2035 $ 142,000 153,435 154,271 Senior secured utility bonds 4.71 % 2026-2044 $ 556,203 552,479 554,822 Canadian dollar borrowings Senior unsecured notes 3.68 % 2027-2050 C$ 1,200,000 903,360 882,899 Senior secured project notes 10.21 % 2027 C$ 18,512 13,982 15,024 Chilean Unidad de Fomento borrowings Senior unsecured utility bonds 3.98 % 2028-2040 CLF 1,579 81,532 77,206 $ 6,419,774 $ 5,855,566 Subordinated borrowings Subordinated unsecured notes 5.25 % 2082 C$ 400,000 298,033 $ 291,238 Subordinated unsecured notes 5.56 % 2078-2082 $ 1,387,500 1,365,340 1,365,213 $ 1,663,373 $ 1,656,451 $ 8,083,147 $ 7,512,017 Less: current portion (513,803) (423,274) $ 7,569,344 $ 7,088,743 Short-term obl igations of $760,386 that are expected to be refinanced using the long-term credit facilities are presented as long-term debt. Long-term debt issued at a subsidiary level (project notes or utility bonds) relating to a specific operating facility is generally collateralized by the respective facility with no other recourse to the Company. Long-term debt issued at a subsidiary level whether or not collateralized generally has certain financial covenants, which must be maintained on a quarterly basis. Non-compliance with the covenants could restrict cash distributions/dividends to the Company from the specific facilities. 7. Long-term debt (continued) The following table sets out the bank credit facilities available to AQN and its operating groups: June 30, December 31, 2023 2022 Revolving and term credit facilities $ 4,564,000 $ 4,513,300 Funds drawn on facilities/commercial paper issued (2,089,600) (1,532,493) Letters of credit issued (407,900) (465,200) Liquidity available under the facilities $ 2,066,500 $ 2,515,607 Undrawn portion of uncommitted letter of credit facilities (307,600) (226,900) Cash on hand 100,258 57,623 Total liquidity and capital reserves $ 1,859,158 $ 2,346,330 Recent financing activities: (a) Senior unsecured revolving credit facilities Corporate On June 1, 2023, the Company terminated its former $50,000 uncommitted bi-lateral credit facility. (b) U.S. dollar senior unsecured notes Subsequent to quarter-end, on July 31, 2023 the Company repaid a $75,000 senior unsecured note on its maturity. As of June 30, 2023, the Company had ac crued $71,703 in interest expense (December 31, 2022 - $70,274). Interest expense for the three and six months ended June 30, 2023 and 2022 consists of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Long-term debt $ 65,046 $ 65,746 $ 128,814 $ 127,832 Commercial paper, credit facility draws and related fees 27,714 5,466 52,139 9,051 Accretion of fair value adjustments (824) (4,471) (4,223) (9,014) Capitalized interest and AFUDC capitalized on regulated property (4,420) (906) (8,304) (2,136) Other 2,147 (1,262) 3,155 (3,217) $ 89,663 $ 64,573 $ 171,581 $ 122,516

Pension and other post-employme

Pension and other post-employment benefits	6 Months Ended
	Jun. 30, 2023
Retirement Benefits [Abstract]
Pension and other post-employment benefits	Pension and other post-employment benefits The following table lists the components of net benefit costs for the pension plans and other post-employment benefits (“OPEB”) in the unaudited interim consolidated statements of operations for the three and six months ended June 30: Pension benefits Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Service cost $ 3,166 $ 4,532 $ 6,093 $ 8,388 Non-service costs Interest cost 7,906 6,778 16,299 12,841 Expected return on plan assets (7,947) (10,519) (16,263) (20,843) Amortization of net actuarial losses (gains) (71) 1,257 (195) 2,046 Amortization of prior service credits (373) (389) (746) (792) Impact of regulatory accounts 4,588 4,664 8,683 11,002 $ 4,103 $ 1,791 $ 7,778 $ 4,254 Net benefit cost $ 7,269 $ 6,323 $ 13,871 $ 12,642 OPEB Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Service cost $ 902 $ 1,554 $ 1,891 $ 3,109 Non-service costs Interest cost 2,891 2,282 6,329 4,641 Expected return on plan assets (2,331) (2,841) (5,077) (5,682) Amortization of net actuarial gains (561) (86) (1,122) (172) Amortization of prior service credits (213) 6 (426) 12 Impact of regulatory accounts 1,417 1,106 2,785 1,783 $ 1,203 $ 467 $ 2,489 $ 582 Net benefit cost $ 2,105 $ 2,021 $ 4,380 $ 3,691

Other long-term liabilities

Other long-term liabilities	6 Months Ended
	Jun. 30, 2023
Other Liabilities Disclosure [Abstract]
Other long-term liabilities	Other long-term liabilities Other long-term liabilities consist of the following: June 30, December 31, 2023 2022 Contract adjustment payments $ 78,056 $ 113,876 Asset retirement obligations 113,678 116,584 Advances in aid of construction 90,096 88,546 Environmental remediation obligation 41,092 42,457 Customer deposits 35,360 34,675 Unamortized investment tax credits 17,419 17,649 Deferred credits and contingent consideration 45,937 39,498 Preferred shares, Series C (a) 12,067 12,072 Hook-up fees 25,813 32,463 Lease liabilities 21,415 21,834 Contingent development support obligations 9,129 8,824 Note payable to related party 25,808 25,808 Other 34,004 41,156 $ 549,874 $ 595,442 Less: current portion (119,495) (134,212) $ 430,379 $ 461,230

Shareholders' capital

Shareholders' capital	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Shareholders' capital	Shareholders’ capital (a) Common shares Number of common shares Six months ended June 30 2023 2022 Common shares, beginning of period 683,614,803 671,960,276 Dividend reinvestment plan 4,370,289 3,014,264 Exercise of share-based awards (b) 772,591 673,852 Conversion of convertible debentures 1,415 754 Common shares, end of period 688,759,098 675,649,146 On August 15, 2022, AQN re-established an at-the-market equity program (“ATM Program”) that allows the Company to issue up to $500,000 (or the equivalent in Canadian dollars) of common shares from treasury to the public from time to time, at the Company’s discretion, at the prevailing market price when issued on the Toronto Stock Exchange, the New York Stock Exchange (“NYSE”) or any other existing trading market for the common shares of the Company in Canada or the United States. During the six months ended June 30, 2023, the Company did not issue common shares under the ATM Program. As of August 9, 2023, the Company has issued, since the inception of its initial ATM Program in 2019, a cumulative total of 36,814,536 common shares at an average price of $15.00 per share for gross proceeds of $551,086 ($544,295 net of commissions). Other related costs, primarily related to the establishment and subsequent re-establishments of the ATM Program, were $4,843. 10. Shareholders’ capital (continued) (a) Common shares (continued) Dividend reinvestment plan The Company has a common shareholder dividend reinvestment plan, which, when the plan is active, provides an opportunity for holders of AQN’s common shares who reside in Canada, the United States, or, subject to AQN’s consent, other jurisdictions, to reinvest the cash dividends paid on their common shares in additional common shares which, at AQN’s election, are either purchased on the open market or newly issued from treasury. Effective March 3, 2022, common shares purchased under the plan were issued at a 3% discount (previously at 5%) to the prevailing market price (as determined in accordance with the terms of the plan). During the six months ended June 30, 2023, AQN issued 4,370,289 common shares under the dividend reinvestment plan. Effective March 16, 2023, AQN suspended the dividend reinvestment plan. Dividends will only be paid in cash while the reinvestment plan is suspended. (b) Share-based compensation For the three and six months ended June 30, 2023, AQN recorded $3,199 and $3,895 (2022 - $3,860 and $3,495 respectively) in total share-based compensation expense. The compensation expense is recorded with operating expenses in the unaudited interim consolidated statements of operations. The portion of share-based compensation costs capitalized as cost of construction is insignificant. As of June 30, 2023, total unrecognized compensation costs related to non-vested share-based awards were $39,515 and are expected to be recognized over a period of 2.27 years Share option plan During the six months ended June 30, 2023, the Board of Directors of the Company (the "Board") approved the grant of 1,368,744 options to executives of the Company. The options allow for the purchase of common shares at a weighted average price of C$10.76, the market price of the underlying common shares at the date of grant. One-third of the options vest on each of December 31, 2023, 2024 and 2025. The options may be exercised up to eight years following the date of grant. The following assumptions were used in determining the fair value of share options granted: 2023 Risk-free interest rate 3.4 % Expected volatility 27 % Expected dividend yield 8.6 % Expected life 5.50 years Weighted average grant date fair value per option C$1.04 Performance and restricted share units During the six months ended June 30, 2023, a total of 2,349,180 performance share units ("PSUs") and restricted share units ("RSUs") were granted to employees of the Company . The awards vest based on the terms of each agreement ranging from February 2023 to January 2025. During the six months ended June 30, 2023, the Company settled 661,570 PSUs and RSUs in exchange for 331,038 common shares issued from treasury, and 330,532 PSUs and RSUs were settled at their cash value as payment for tax withholding related to the settlement of the awards. During the six months ended June 30, 2023, the Company settled 52,379 bonus deferral RSUs in exchange for 23,678 common shares issued from treasury, and 28,701 RSUs were settled at their cash value as payment for tax withholding related to the settlement of the awards. During the six months ended June 30, 2023, 72,155 bonus deferral RSUs were granted to employees of the Company. The RSUs are 100% vested. Directors' deferred share units

Accumulated other comprehensive

Accumulated other comprehensive income (loss)	6 Months Ended
	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive income (loss)	Accumulated other comprehensive income (loss) AOCI consists of the following balances, net of tax: Foreign currency cumulative translation Unrealized gain (loss) on cash flow hedges Pension and post-employment actuarial changes Total Balance, January 1, 2022 $ (76,615) $ (3,514) $ 8,452 $ (71,677) OCI (18,013) (128,838) 23,722 (123,129) Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations (5,489) 34,543 4,039 33,093 Net current period OCI $ (23,502) $ (94,295) $ 27,761 $ (90,036) OCI attributable to the non-controlling interests 1,650 — — 1,650 Net current period OCI attributable to shareholders of AQN (21,852) (94,295) 27,761 (88,386) Balance, December 31, 2022 $ (98,467) $ (97,809) $ 36,213 $ (160,063) OCI 16,343 52,435 — 68,778 Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations (788) 1,851 (1,303) (240) Net current period OCI $ 15,555 $ 54,286 $ (1,303) $ 68,538 OCI attributable to the non-controlling interests (212) — — (212) Net current period OCI attributable to shareholders of AQN $ 15,343 $ 54,286 $ (1,303) $ 68,326 Balance, June 30, 2023 $ (83,124) $ (43,523) $ 34,910 $ (91,737) Amounts reclassified from AOCI for foreign currency cumulative translation affected derivative gain (loss); those for unrealized gain (loss) on cash flow hedges affected revenue from non-regulated energy sales, interest expense and derivative gain (loss); while those for pension and other post-employment actuarial changes affected pension and other post-employment non-service costs.

Dividends

Dividends	6 Months Ended
	Jun. 30, 2023
Disclosure Cash Dividends [Abstract]
Dividends	Dividends All dividends of the Company are made on a discretionary basis as determined by the Board. The Company declares and pays the dividends on its common shares in U.S. dollars. Dividends declared were as follows: Three months ended June 30 2023 2022 Dividend Dividend per share Dividend Dividend per share Common shares $ 75,379 $ 0.1085 $ 122,636 $ 0.1808 Series A preferred shares C$ 1,549 C$ 0.3226 C$ 1,549 C$ 0.3226 Series D preferred shares C$ 1,273 C$ 0.3182 C$ 1,273 C$ 0.3182 Six months ended June 30 2023 2022 Dividend Dividend per share Dividend Dividend per share Common shares $ 150,765 $ 0.2170 $ 238,209 $ 0.3514 Series A preferred shares C$ 3,097 C$ 0.6453 C$ 3,097 C$ 0.6453 Series D preferred shares C$ 2,546 C$ 0.6364 C$ 2,546 C$ 0.6364

Related party transactions

Related party transactions	6 Months Ended
	Jun. 30, 2023
Related Party Transactions [Abstract]
Related party transactions	Related party transactions (a) Equity-method investments The Company provides administrative and development services to its equity-method investees and is reimbursed for incurred costs. To that effect, during the three and six months ended June 30, 2023, the Company charged its equity-method investees $12,773 and $42,074, respectively (2022 - $26,547 and $33,960, respectively). Additionally, Liberty Development JV Inc. (note 6(a)), an equity-investee of the Company, provides development services to the Company on specified projects, for which it earns a development fee upon reaching certain milestones. However, during the three and six months ended June 30, 2023 and June 30, 2022, no such development fees were charged to the Company. Subsequent to quarter-end, on July 5, 2023, the Company provided a $35,000 non-interest-bearing loan to Liberty Development JV Inc. The joint venture used these funds to return equity to its shareholders through which the Company received $17,500. (b) Redeemable non-controlling interest held by related party Liberty Development Energy Solutions (note 6(a)), an equity investee of the Company, has a secured credit facility in the amount of $306,500 maturing on January 26, 2024. It is collateralized through a pledge of Atlantica Sustainable Infrastructure plc (“Atlantica”) ordinary shares. A collateral shortfall would occur if the net obligation as defined in the agreement would equal or exceed 50% of the market value of such Atlantica shares, in which case the lenders would have the right to sell Atlantica shares to eliminate the collateral shortfall. The Liberty Development Energy Solutions secured credit facility is repayable on demand if Atlantica ceases to be a public company or if certain other events are announced or completed that could restrict AY Holdings’ ability to sell or transfer its Atlantica ordinary shares. Liberty Development Energy Solutions has a preference share ownership in AY Holdings, which AQN reflects as redeemable non-controlling interest held by related party. Redemption is not considered probable as of June 30, 2023. During the three and six months ended June 30, 2023, the Company incurred non-controlling interest attributable to Liberty Development Energy Solutions of $6,348 and $12,399, respectively (2022 - $3,086 and $5,661, respectively) and recorded distributions of $6,302 and $12,300, respectively (2022 - $2,820 and $5,404, respectively). 13. Related party transactions (continued) (c) Non-controlling interest held by related party Non-controlling interest held by related party represents an interest in a consolidated subsidiary of the Company, acquired by Atlantica Yield Energy Solutions Canada Inc. ("AYES Canada") in May 2019 for $96,752 (C$130,103) and an interest in Algonquin (AY Holdco) B.V., a consolidated subsidiary of the Company, acquired by Liberty Development JV Inc. in November 2021 for $39,376. During the three and six months ended June 30, 2023, the Company recorded distributions of $4,921 and $10,979, respectively (2022 - $5,534 and $12,956, respectively). The above related party transactions have been recorded at the exchange amounts agreed to by the parties to the transactions.

Non-controlling interests and r

Non-controlling interests and redeemable non-controlling interests	6 Months Ended
	Jun. 30, 2023
Noncontrolling Interest [Abstract]
Non-controlling interests and redeemable non-controlling interests	Non-controlling interests and redeemable non-controlling interests Net effect attributable to non-controlling interests consists of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 HLBV and other adjustments attributable to: Non-controlling interests - tax equity partnership units $ 25,172 $ 31,100 $ 59,743 $ 71,961 Non-controlling interests - redeemable tax equity partnership units 331 1,337 662 2,936 Other net loss attributable to: Non-controlling interests (10,064) (416) (18,387) (1,934) $ 15,439 $ 32,021 $ 42,018 $ 72,963 Redeemable non-controlling interest, held by related party (6,349) (3,086) (12,399) (5,661) Net effect of non-controlling interests $ 9,090 $ 28,935 $ 29,619 $ 67,302 The non-controlling tax equity investors (“tax equity partnership units”) in the Company's U.S. wind power and solar power generating facilities are entitled to allocations of earnings, tax attributes and cash flows in accordance with contractual agreements. The share of earnings attributable to the non-controlling interest holders in these subsidiaries is calculated using the Hypothetical Liquidation at Book Value ("HLBV") method of accounting.

Income taxes

Income taxes	6 Months Ended
	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income taxes	Income taxes For the three and six months ended June 30, 2023 , the income tax recovery in the unaudited interim consolidated statements of operations represents an effective tax rate different than the Canadian enacted statutory rate of 26.5%. The differences are as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Expected income tax recovery at Canadian statutory rate $ (84,596) $ (22,562) $ (11,903) $ (6,119) Increase (decrease) resulting from: Effect of differences in tax rates on transactions in and within foreign jurisdictions and change in tax rates (5,560) (6,562) (16,718) (19,039) Adjustments from investments carried at fair value 40,357 17,216 11,092 18,229 Change in valuation allowance 676 (1,582) (791) (1,731) Non-controlling interests share of income 2,201 4,587 12,393 15,640 Acquisition-related state deferred tax adjustments — — — 7,600 Tax credits (8,095) (11,992) (20,505) (22,023) Amortization and settlement of excess deferred income tax (2,456) (2,296) (6,207) (6,329) Other 1,515 372 1,382 405 Income tax recovery $ (55,958) $ (22,819) $ (31,257) $ (13,367) The following table illustrates the movement in the deferred tax valuation allowance: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Beginning balance $ 97,396 $ 28,959 $ 107,583 $ 27,470 Charged to income tax recovery 676 (1,582) (791) (1,731) Charged (reduction) to OCI (6,418) 2,664 (15,138) 4,302 Reductions to other accounts — (211) — (211) Ending balance $ 91,654 $ 29,830 $ 91,654 $ 29,830

Other net losses

Other net losses	6 Months Ended
	Jun. 30, 2023
Other Income and Expenses [Abstract]
Other net losses	Other net losses Other net losses (gains) consist of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Acquisition and transition-related costs $ — $ 2,315 $ — $ 3,940 Kentucky termination costs (a) 43,808 3,535 46,527 4,075 Acquisition-related settlement payment (b) (11,983) — (11,983) — Other 8,542 2,802 9,285 5,367 $ 40,367 $ 8,652 $ 43,829 $ 13,382 16. Other net losses (continued) (a) Kentucky termination costs The loss related to the termination of the Kentucky Power Transaction includes $38,795 for the write-off of capitalized costs which are primarily related to the implementation of an enterprise software solution. The remaining amount relates to the transaction costs, severance costs, and other termination costs. (b) Acquisition-related settlement payment During the period, the Company received $12,814 as an acquisition-related settlement payment in connection with the Suralis (formerly called ESSAL) acquisition. The Company also incurred legal fees of $831 in relation to this settlement.

Basic and diluted net earnings

Basic and diluted net earnings (loss) per share	6 Months Ended
	Jun. 30, 2023
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 (loss) per share have been calculated on the basis of net earnings (loss) 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 (loss) per share is computed using the weighted-average number of common shares, additional shares issued subsequent to quarter-end under the dividend reinvestment plan, and, if dilutive, potential incremental common shares related to the convertible debentures or resulting from the application of the treasury stock method to the Green Equity Units (note 7) and the weighted average number of outstanding share options, PSUs, RSUs and DSUs outstanding during the period. The reconciliation of the net earnings (loss) and the weighted average shares used in the computation of basic and diluted earnings (loss) per share are as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Net earnings (loss) attributable to shareholders of AQN (253,231) (33,387) $ 16,908 $ 57,578 Series A preferred shares dividend 1,142 1,219 2,290 2,437 Series D preferred shares dividend 938 1,001 1,882 2,003 Net earnings (loss) attributable to common shareholders of AQN – basic and diluted $ (255,311) $ (35,607) $ 12,736 $ 53,138 Weighted average number of shares Basic 687,847,010 674,742,897 688,277,615 674,720,319 Effect of dilutive securities — — 2,127,104 3,046,590 Diluted 687,847,010 674,742,897 690,404,719 677,766,909 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 three months ended June 30, 2023 and 6,350,530 securities for the six months ended June 30, 2023 as they are anti-dilutive. This calculation of diluted shares for the six months ended June 30, 2022 excludes the potential impact of 1,134,711 securities, as they are anti-dilutive.

Segmented information

Segmented information	6 Months Ended
	Jun. 30, 2023
Segment Reporting [Abstract]
Segmented information	The Company is managed under two primary business units consisting of the Regulated Services Group and the Renewable Energy Group. The two business units are the two segments of the Company. The Regulated Services Group, the Company's regulated operating unit, owns and operates a portfolio of electric, natural gas, water distribution and wastewater collection utility systems and transmission operations in the United States, Canada, Bermuda and Chile; the Renewable Energy Group, the Company's non-regulated operating unit, owns and operates a diversified portfolio of renewable and thermal electric generation assets in North America and internationally. On May 11, 2023, the Company announced that its Board of Directors had initiated a strategic review of the Renewable Energy Group. On August 10, 2023, the Company announced that it will pursue a sale of the Renewable Energy Group. For purposes of evaluating the performance of the business units, the Company allocates the realized portion of any gains or losses on financial instruments to the specific business units. Dividend income from Atlantica and AYES Canada is included in the operations of the Renewable Energy Group, while interest income from San Antonio Water System is included in the operations of the Regulated Services Group. Equity method gains and losses are included in the operations of the Regulated Services Group or Renewable Energy Group based on the nature of the activities of the investees. The change in value of investments carried at fair value, unrealized portion of any gains or losses on derivative instruments not designated in a hedging relationship and foreign exchange gains and losses are not considered in management’s evaluation of divisional performance and are, therefore, allocated and reported under corporate. Three months ended June 30, 2023 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) $ 532,233 $ 71,694 $ — $ 603,927 Other revenue 14,200 9,380 364 23,944 Fuel, power and water purchased 138,374 3,782 — 142,156 Net revenue 408,059 77,292 364 485,715 Operating expenses (recovery) 213,891 27,737 (146) 241,482 Administrative expenses 13,548 11,044 1,100 25,692 Depreciation and amortization 84,754 33,291 403 118,448 Loss on foreign exchange — — 6,379 6,379 Operating income (loss) 95,866 5,220 (7,372) 93,714 Interest expense (42,724) (16,420) (30,519) (89,663) Income (loss) from long-term investments 9,332 26,259 (313,287) (277,696) Other expenses (41,010) (1,197) (2,427) (44,634) Earnings (loss) before income taxes $ 21,464 $ 13,862 $ (353,605) $ (318,279) Capital expenditures $ 225,505 $ 19,704 $ — $ 245,209 (1) Renewable Energy Group revenue includes $4,328 related to net hedging gain from energy derivative contracts and availability credits for the three months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $9,083 related to alternative revenue programs for the three months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. 18. Segmented information (continued) Three months ended June 30, 2022 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) $ 507,095 $ 92,141 $ — $ 599,236 Other revenue 12,559 7,208 382 20,149 Fuel, power and water purchased 159,256 9,646 — 168,902 Net revenue 360,398 89,703 382 450,483 Operating expenses 179,258 27,053 19 206,330 Administrative expenses 10,966 8,510 631 20,107 Depreciation and amortization 76,228 36,057 262 112,547 Loss on foreign exchange — — 4,464 4,464 Operating income (loss) 93,946 18,083 (4,994) 107,035 Interest expense (23,860) (14,862) (25,851) (64,573) Income (loss) from long-term investments 5,265 26,675 (145,320) (113,380) Other expenses (2,898) (4,723) (6,602) (14,223) Earnings (loss) before income taxes $ 72,453 $ 25,173 $ (182,767) $ (85,141) Capital expenditures $ 179,878 $ 67,660 $ — $ 247,538 (1) Renewable Energy Group revenue includes $25,062 related to net hedging loss from energy derivative contracts and availability credits for the three months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $8,811 related to alternative revenue programs for the three months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. 18. Segmented information (continued) Six months ended June 30, 2023 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) 1,206,394 150,410 $ — $ 1,356,804 Other revenue 28,218 20,751 725 49,694 Fuel, power and water purchased 405,524 11,588 — 417,112 Net revenue 829,088 159,573 725 989,386 Operating expenses 401,315 60,447 7 461,769 Administrative expenses 21,873 18,474 3,178 43,525 Depreciation and amortization 170,611 68,836 642 240,089 Loss on foreign exchange — — 7,815 7,815 Operating income (loss) 235,289 11,816 (10,917) 236,188 Interest expense (81,202) (31,315) (59,064) (171,581) Income (loss) from long-term investments 19,660 59,526 (136,870) (57,684) Other expenses (45,259) (1,197) (4,435) (50,891) Earnings (loss) before income taxes $ 128,488 $ 38,830 $ (211,286) $ (43,968) Capital expenditures 372,886 42,072 — 414,958 June 30, 2023 Property, plant and equipment $ 8,757,413 $ 3,550,202 $ 29,316 $ 12,336,931 Investments carried at fair value 1,799 1,211,919 — 1,213,718 Equity-method investees 57,586 322,141 8,789 388,516 Total assets 12,247,694 5,401,782 319,237 17,968,713 (1) Renewable Energy Group revenue includes $11,527 related to net hedging gain from energy derivative contracts and availability credits for the six months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $12,789 related to alternative revenue programs for the six months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. 18. Segmented information (continued) Six months ended June 30, 2022 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) $ 1,129,854 $ 177,901 $ — $ 1,307,755 Other revenue 27,547 16,552 768 44,867 Fuel, power and water purchased 393,828 22,585 — 416,413 Net revenue 763,573 171,868 768 936,209 Operating expenses 363,667 54,643 22 418,332 Administrative expenses 19,036 16,055 2,468 37,559 Depreciation and amortization 156,511 75,474 526 232,511 Loss on foreign exchange — — 4,726 4,726 224,359 25,696 (6,974) 243,081 Gain on sale of renewable assets — 1,200 — 1,200 Operating income (loss) 224,359 26,896 (6,974) 244,281 Interest expense (45,286) (30,575) (46,655) (122,516) Income (loss) from long-term investments 9,774 54,301 (188,144) (124,069) Other expenses (7,786) (4,978) (8,023) (20,787) Earnings (loss) before income taxes $ 181,061 $ 45,644 $ (249,796) $ (23,091) Capital expenditures 435,463 139,774 — 575,237 December 31, 2022 Property, plant and equipment $ 8,554,938 $ 3,360,687 $ 29,260 $ 11,944,885 Investments carried at fair value 1,984 1,342,223 — 1,344,207 Equity-method investees 56,199 310,103 15,500 381,802 Total assets 12,109,575 5,251,933 266,105 17,627,613 (1) Renewable Energy Group revenue includes $29,892 related to net hedging loss from energy derivative contracts and availability credits for the six months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $15,089 related to alternative revenue programs for the six months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. The majority of non-regulated energy sales are earned from contracts with large public utilities. The Company has sought to mitigate its credit risk by selling energy to large utilities in various North American locations. None of the utilities contribute more than 10% of total revenue. AQN operates in the independent power and utility industries in the United States, Canada and other regions. Information on operations by geographic area is as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Revenue United States $ 503,777 $ 492,373 $ 1,144,201 $ 1,091,246 Canada 37,788 41,397 90,916 95,232 Other regions 86,306 85,615 171,381 166,144 $ 627,871 $ 619,385 $ 1,406,498 $ 1,352,622 Revenue is attributed to the regions based on the location of the underlying generating and utility facilities.

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies (a) Contingencies AQN and its subsidiaries are involved in various claims and litigation arising out of the ordinary course and conduct of its business. Although such matters cannot be predicted with certainty, management does not consider AQN’s exposure to such litigation to be material to these unaudited interim consolidated financial statements. Accruals for any contingencies related to these items are recorded in the unaudited interim consolidated financial statements at the time it is concluded that their occurrence is probable and the related liability is estimable. Mountain View Fire On November 17, 2020, a wildfire now known as the Mountain View Fire occurred in the territory of Liberty Utilities (CalPeco Electric) LLC ("Liberty CalPeco"). The cause of the fire remains under investigation, and CAL FIRE has not yet released its final report. There are currently 17 active lawsuits that name certain subsidiaries of the Company as defendants in connection with the Mountain View Fire, as well as one non-litigation claim brought by the U.S. Department of Agriculture seeking reimbursement for alleged fire suppression costs. Twelve lawsuits are brought by groups of individual plaintiffs alleging causes of action including negligence, inverse condemnation, nuisance, trespass, and violations of Cal. Pub. Util. Code 2106 and Cal. Health and Safety Code 13007 (one of these twelve lawsuits also alleges the wrongful death of an individual and various subrogation claims on behalf of insurance companies). In another lawsuit, County of Mono, Antelope Valley Fire Protection District, and Bridgeport Indian Colony allege similar causes of action and seek damages for fire suppression costs, law enforcement costs, property and infrastructure damage, and other costs. In four other lawsuits, insurance companies allege inverse condemnation and negligence and seek recovery of amounts paid and to be paid to their insureds. The likelihood of success in these lawsuits cannot be reasonably predicted. Liberty CalPeco intends to vigorously defend them. The Company has wildfire liability insurance that is expected to apply up to applicable policy limits. (b) Commitments In addition to the commitments related to the development projects disclosed in note 6, the following significant commitments exist as of June 30, 2023. AQN has outstanding purchase commitments for power purchases, natural gas supply and service agreements, service agreements, capital project commitments and land easements. Detailed below are estimates of future commitments under these arrangements: Year 1 Year 2 Year 3 Year 4 Year 5 Thereafter Total Power purchase (1) $ 83,606 $ 47,603 $ 29,461 $ 12,397 $ 12,643 $ 136,244 $ 321,954 Natural gas supply and service agreements (2) 93,739 92,102 51,456 38,265 33,088 171,141 479,791 Service agreements 73,974 61,943 58,602 48,070 50,529 285,567 578,685 Capital projects 16,537 — — — — — 16,537 Land easements and others 13,967 14,159 14,344 14,514 14,693 500,830 572,507 Total $ 281,823 $ 215,807 $ 153,863 $ 113,246 $ 110,953 $ 1,093,782 $ 1,969,474 (1) Power purchase: AQN’s electric distribution facilities have commitments to purchase physical quantities of power for load serving requirements. The commitment amounts included in the table above are based on market prices as at June 30, 2023. However, the effects of purchased power unit cost adjustments are mitigated through a purchased power rate-adjustment mechanism. (2) Natural gas supply and service agreements: AQN’s gas distribution facilities and thermal generation facilities have commitments to purchase physical quantities of natural gas under contracts for purposes of load serving requirements and of generating power.

Non-cash operating items

Non-cash operating items	6 Months Ended
	Jun. 30, 2023
Disclosure Changes In Non Cash Operating Items [Abstract]
Non-cash operating items	Non-cash operating items The changes in non-cash operating items consist of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Accounts receivable $ 21,450 $ (8,641) $ 35,213 $ (49,253) Fuel and natural gas in storage (12,837) (23,362) 19,657 (7,128) Supplies and consumables inventory (11,678) (3,006) (22,454) (10,775) Income taxes recoverable 5,134 (861) 5,683 2,071 Prepaid expenses 13,231 (5,203) 6,183 (12,553) Accounts payable 71,253 48,424 18,033 26,759 Accrued liabilities 38,215 (22,585) (88,895) 30,711 Current income tax liability (1,039) (1,350) 2,563 853 Asset retirements and environmental obligations 363 (10,855) (706) (11,354) Net regulatory assets and liabilities (11,712) (9,201) (28,633) (54,119) $ 112,380 $ (36,640) $ (53,356) $ (84,788)

Financial instruments

Financial instruments	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Financial instruments	Financial instruments (a) Fair value of financial instruments June 30, 2023 Carrying Fair Level 1 Level 2 Level 3 Long-term investments carried at fair value $ 1,213,718 $ 1,213,718 $ 1,149,505 $ — $ 64,213 Development loans and other receivables 98,313 91,547 — 91,547 — Derivative instruments: Commodity contracts for regulatory operations 139 139 — 139 — Interest rate swaps designated as a hedge 65,711 65,711 — 65,711 — Interest rate cap not designated as hedge 3,490 3,490 — 3,490 — Congestion revenue rights not designated as hedge 7,757 7,757 — — 7,757 Cross-currency swap designated as a net investment hedge 464 464 — 464 — Total derivative instruments 77,561 77,561 — 69,804 7,757 Total financial assets $ 1,389,592 $ 1,382,826 $ 1,149,505 $ 161,351 $ 71,970 Long-term debt $ 8,083,147 $ 7,528,421 $ 2,716,700 $ 4,811,721 $ — Notes payable to related party 25,808 15,188 — 15,188 — Convertible debentures 238 285 285 — — Preferred shares, Series C 12,067 11,943 — 11,943 — Derivative instruments: Energy contracts designated as a cash flow hedge 64,370 64,370 — — 64,370 Energy contracts not designated as hedge 11,515 11,515 — — 11,515 Cross-currency swap designated as a net investment hedge 15,550 15,550 — 15,550 — Cross-currency swap designated as a cash flow hedge 9,736 9,736 — 9,736 — Commodity contracts for regulated operations 1,441 1,441 — 1,441 — Total derivative instruments 102,612 102,612 — 26,727 75,885 Total financial liabilities $ 8,223,872 $ 7,658,449 $ 2,716,985 $ 4,865,579 $ 75,885 21. Financial instruments (continued) (a) Fair value of financial instruments (continued) December 31, 2022 Carrying Fair Level 1 Level 2 Level 3 Long-term investments carried at fair value $ 1,344,207 $ 1,344,221 $ 1,270,138 $ — $ 74,083 Development loans and other receivables 53,680 50,300 — 50,300 — Derivative instruments: Energy contracts not designated as hedge 393 393 — — 393 Interest rate swap designated as a hedge 69,188 69,188 — 69,188 — Currency forward contract not designated as a hedge 2,659 2,659 — 2,659 — Congestion revenue 10,110 10,110 — — 10,110 Cross-currency swap designated as a net investment hedge 1,267 1,267 — 1,267 — Commodity contracts for regulated operations 283 283 — 283 — Total derivative instruments 83,900 83,900 — 73,397 10,503 Total financial assets $ 1,481,787 $ 1,478,421 $ 1,270,138 $ 123,697 $ 84,586 Long-term debt $ 7,512,017 $ 6,699,031 $ 2,623,628 $ 4,075,403 — Notes payable to related party 25,808 15,180 — 15,180 — Convertible debentures 245 276 276 — — Preferred shares, Series C 12,072 11,675 — 11,675 — Derivative instruments: Energy contracts designated as a cash flow hedge 120,284 120,284 — — 120,284 Energy contracts not designated as hedge 8,617 8,617 — — 8,617 Cross-currency swap designated as a net investment hedge 24,371 24,371 — 24,371 — Cross-currency swap designated as a cash flow hedge 15,435 15,435 — 15,435 — Commodity contracts for regulated operations 1,614 1,614 — 1,614 — Total derivative instruments 170,321 170,321 — 41,420 128,901 Total financial liabilities $ 7,720,463 $ 6,896,483 $ 2,623,904 $ 4,143,678 $ 128,901 21. Financial instruments (continued) (a) Fair value of financial instruments (continued) The Company has determined that the carrying value of its short-term financial assets and liabilities approximates fair value as of June 30, 2023 and December 31, 2022 due to the short-term maturity of these instruments. The fair value of the investment in Atlantica (level 1) is measured at the closing price on the NASDAQ stock exchange. The fair value of development loans and other receivables (level 2) is determined using a discounted cash flow method, using estimated current market rates for similar instruments adjusted for estimated credit risk as determined by management. The Company’s level 1 fair value of long-term debt is measured at the closing price on the NYSE and the over-the-counter closing price. The Company’s level 2 fair value of long-term debt at fixed interest rates and Series C preferred shares has been determined using a discounted cash flow method and current interest rates. The Company's level 2 fair value of convertible debentures has been determined as the greater of their face value and the quoted value of AQN's common shares on a converted basis. The Company’s level 2 fair value derivative instruments primarily consist of swaps, options, rights, subscription agreements and forward physical derivatives where market data for pricing inputs are observable. Level 2 pricing inputs are obtained from various market indices and utilize discounting based on quoted interest rate curves, which are observable in the marketplace. The Company’s level 3 instruments consist of energy contracts for electricity sales, congestion revenue rights ("CRRs") and the Company's investment in AYES Canada. The significant unobservable inputs used in the fair value measurement of energy contracts are the internally developed forward market prices ranging fro m $24.27 to $73.20 with a weighted average of $35.79 as of June 30, 2023 . The weighted average forward market prices are developed based on the quantity of energy expected to be sold monthly and the expected forward price during that month. The change in the fair value of the energy contracts is detailed in notes 21(b)(ii) and 21(b)(iv). The significant unobservable inputs used in the fair value m easurement of CRRs are recent CRR auction prices ranging from $nil to $23.98 with a weighted average of $5.04 as of June 30, 2023. The significant unobservable inputs used in the fair value measurement of the Company's AYES Canada investment are the expected cash flows, the discount rates applied to these cash flows ranging fro m 7.81% to 8.31% with a weighted average of 8.12%, a nd the expected volatility of Atlantica's share price ranging fro m 26.99% to 34.89% as of June 30, 2023. Significant increases (decreases) in expected cash flows or increases (decreases) in discount rate in isolation would have resulted in a significantly lower (higher) fair value measurement. (b) Derivative instruments Derivative instruments are recognized on the unaudited interim consolidated balance sheets as either assets or liabilities and measured at fair value at each reporting period. (i) Commodity derivatives – regulated accounting The Company uses derivative financial instruments to reduce the cash flow variability associated with the purchase price for a portion of future natural gas purchases associated with its regulated natural gas and electric service territories. The Company’s strategy is to minimize fluctuations in natural gas sale prices to regulated customers. As at June 30, 2023, the commodity volume, in dekatherms, associated with the above derivative contracts was 2,755,733. 21. Financial instruments (continued) (b) Derivative instruments (continued) (i) Commodity derivatives – regulated accounting (continued) The accounting for these derivative instruments is subject to guidance for rate regulated enterprises. Most of the gains or losses on the settlement of these contracts are included in the calculation of the fuel and commodity cost adjustments (note 5). As a result, the changes in fair value of these natural gas derivative contracts and their offsetting adjustment to regulatory assets and liabilities had no earnings impact. (ii) Cash flow hedges The Company has sought to reduce the price risk on the expected future sale of power generation at the Sandy Ridge, Senate, Minonk, and Sugar Creek Wind Facilities by entering into the following long-term energy derivative contracts. Notional quantity Expiry Receive average Pay floating price 3,772,462 September 2030 $25.00 Illinois Hub 404,612 December 2028 $29.00 PJM Western HUB 1,707,551 December 2027 $22.00 NI HUB 1,471,065 December 2027 $36.00 ERCOT North HUB The Company is party to two interest rate swap contracts as cash flow hedges to mitigate the risk that interest rates will increase over the life of certain term loan facilities. Under the terms of the interest rate swap contracts, the Company has fixed its interest rate expense on such term loan facilities. The fair value of the derivative on the designation date is amortized into earnings over the remaining life of the contract. The Company is party to a forward-starting interest rate swap in order to reduce the interest rate risk related to the quarterly interest payments between July 1, 2024 and July 1, 2029 on t he $350,000 subordinated unsecured notes. The Company designated the entire notional amount of the pay-variable and receive-fixed interest rate swaps as a hedge of the future quarterly variable-rate interest payments associated with the subordinated unsecured notes. In January 2022, the Company entered into a cross-currency interest rate swap, coterminous with the Canadian Notes, to effectively convert the C$400,000 Canadian Offering into U.S. dollars. The change in the carrying amount of the Canadian Notes due to changes in spot exchange rates is recognized each period in the unaudited interim consolidated statements of operations as loss (gain) on foreign exchange. The Company designated the entire notional amount of the cross-currency fixed-for-fixed interest rate swap as a hedge of the foreign currency exposure related to cash flows for the interest and principal repayments on the Canadian Notes. An offsetting portion of the AOCI balance related to changes in fair value of the cross-currency fixed-for-fixed interest rate swap attributable to changes in the spot exchange rates is also immediately reclassified into the unaudited interim consolidated statements of operations as an offsetting loss (gain) on foreign exchange. 21. Financial instruments (continued) (b) Derivative instruments (continued) (ii) Cash flow hedges (continued) The following table summarizes OCI attributable to derivative financial instruments designated as a cash flow hedge: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Effective portion of cash flow hedge $ 29,949 $ (20,298) $ 52,435 $ (81,852) Amortization of cash flow hedge (1,421) (3,828) (4,908) (3,992) Amounts reclassified from AOCI 7,893 11,247 6,759 14,079 OCI attributable to shareholders of AQN $ 36,421 $ (12,879) $ 54,286 $ (71,765) The Company expects $19,722 of unrealized losses currently in AOCI to be reclassified, net of taxes into non-regulated energy sales, investment loss, interest expense and derivative gains, within the next 12 months, as the underlying hedged transactions settle. (iii) Foreign exchange hedge of net investment in foreign operation The functional currency of most of AQN's operations is the U.S. dollar. The Company designates obligations denominated in Canadian dollars as a hedge of the foreign currency exposure of its net investment in its Canadian investments and subsidiaries. The related foreign currency transaction gain or loss designated as, and effective as, a hedge of the net investment in a foreign operation is reported in the same manner as the translation adjustment (in OCI) related to the net investment. A foreign currency loss of $9,629 and $9,638 for the three and six months ended June 30, 2023, respectively (2022 - gain of $395 and $220, respectively) was recorded in OCI. On May 23, 2019, the Company entered into a cross-currency swap, coterminous with the subordinated unsecured notes, to effectively convert the $350,000 U.S.-dollar-denominated offering into Canadian dollars. The change in the carrying amount of the notes due to changes in spot exchange rates was recognized each period in the unaudited interim consolidated statements of operations as loss (gain) on foreign exchange. The Company designated the entire notional amount of the cross-currency fixed-for-fixed interest rate swap as a hedge of the foreign currency exposure related to cash flows for the interest and principal repayments on the notes. Upon the change in functional currency of AQN to the U.S. dollar on January 1, 2020, this hedge was dedesignated. The Company redesignated this swap as a hedge of AQN's net investment in its Canadian subsidiaries. The related foreign currency transaction gain or loss designated as a hedge of the net investment in a foreign operati on is reported in the same manner as the translation adjustment (in OCI) related to the net investment. The fair value of the derivative on the redesignation date will be amortized over the remaining life of the original hedge. A foreign currency loss of $6,942 and $7,009 for the three and six months ended June 30, 2023, respectively (2022 - gain of $14,929 and $10,697, respectively) was recorded in OCI. 21. Financial instruments (continued) (b) Derivative instruments (continued) (iii) Foreign exchange hedge of net investment in foreign operation (continued) Canadian operations The Company is exposed to currency fluctuations from its Canadian-based operations. AQN seeks to manage this risk primarily through the use of natural hedges by using Canadian long-term debt to finance its Canadian operations and a combination of foreign exchange forward contracts and spot purchases. The Company’s Canadian operations are determined to have the Canadian dollar as their functional currency and are exposed to currency fluctuations from their U.S. dollar transactions. The Company designates obligations denominated in U.S. dollars as a hedge of the foreign currency exposure of its net investment in its U.S. investments and subsidiaries. The related foreign currency transaction gain or loss designated as, and effective as, a hedge of the net investment in a foreign operation is reported in the same manner as the translation adjustment (in OCI) related to the net investment. A foreign currency gain of $2,924 and $2,801 for the three and six months ended June 30, 2023, respectively (2022 - loss of $2,149 and $2,544) was recorded in OCI. The Company is party to a C$300,000 fixed-for-fixed cross-currency interest rate swap to effectively convert Canadian dollar debentures into U.S. dollars. In February 2022, the Company settled the related cross-currency swap related to its C$200,000 debenture that was repaid. The Company designated the entire notional amount of the cross-currency interest rate swap and related short-term U.S. dollar payables created by the monthly accruals of the swap settlement as a hedge of the foreign currency exposure of its net investment in the Company’s U.S. operations. The gain or loss related to the fair value changes of the swap and the related foreign currency gains and losses on the U.S. dollar accruals that are designated as, and are effective as, a hedge of the net investment in a foreign operation are reported in the same manner as the translation adjustment (in OCI) related to the net investment. A gain of $3,967 and $4,348 for the three and six months ended June 30, 2023, respectively (2022 - loss of $8,132 and $6,080, respectively) was recorded in OCI. The Company is party to a fixed-for-fixed cross-currency interest rate swap to effectively convert the C$400,000 Canadian-dollar-denominated debentures into U.S. dollars. The Renewable Energy Group designated the entire notional amount of the cross-currency interest rate swap and related short-term U.S. dollar payables created by the monthly accruals of the swap settlement as a hedge of the foreign currency exposure of its net investment in the Company’s U.S. operations. The gain or loss related to the fair value changes of the swap and the related foreign currency gains and losses on the U.S. dollar accruals that are designated as, and are effective as, a hedge of the net investment in a foreign operation are reported in the same manner as the translation adjustment (in OCI) related to the net investment. A gai n of C$4,975 and C$4,987 for the three and six months ended June 30, 2023, respectively ( 2022 - loss of $8,439 and $14,252, respectively ) was recorded in OCI. Chilean operations The Company is exposed to currency fluctuations from its Chilean-based operations. The Company's Chilean operations are determined to have the Chilean peso as their functional currency. Chilean long-term debt used to finance the operations is denominated in Chilean Unidad de Fomento. (iv) Other derivatives and risk management In the normal course of business, the Company is exposed to financial risks that potentially impact its operating results. The Company employs risk management strategies with a view to mitigating these risks to the extent possible on a cost-effective basis. Derivative financial instruments are used to manage certain exposures to fluctuations in exchange rates, interest rates and commodity prices. The Company does not enter into derivative financial agreements for speculative purposes. For derivatives that are not designated as hedges, the changes in the fair value are immediately recognized in earnings. The Company seeks to mitigate the volatility of energy congestion charges at the ERCOT transmission grid by entering into CRRs, which as of June 30, 2023 had a notional quantit y of 919,014 MW-hours at prices ranging fro m $0.64 per MW-hr to $19.06 per MW-hr with a weighted average of $5.97 per MW-hr for April 2023 to April 2025. These CRRs are not designated as an accounting hedge. 21. Financial instruments (continued) (b) Derivative instruments (continued) (iv) Other derivatives and risk management (continued) The Company is party to an interest rate cap agreement in the amount of C$390,000 for the period between January 15, 2023 and January 15, 2024. The Company was party to an interest rate swap to mitigate the interest rate risk related to debt at its Blue Hill Wind Facility. The contract was novated upon the sale of the Blue Hill Wind Facility in 2022. The loss recognized on the derivative was recorded as a reduction of the gain on sale of renewable assets on the unaudited interim consolidated statements of operations. The Company mitigates the price risk on the expected future sale of power generation of one of its solar facilities through a long-term energy derivative contract with a notional quantity of 388,170 MW-hours, a price of $25.15 per MW-hr and expiring in August 2030 as an economic hedge to the price of energy sales. The derivative contract is not designated as an accounting hedge. The effects on the unaudited interim consolidated statements of operations of derivative financial instruments not designated as hedges consist of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Unrealized gain (loss) on derivative financial instruments: Interest rate swaps $ — $ (4,680) $ — $ (4,680) Energy derivative contracts 84 (2,352) 62 (3,103) Commodity contracts — — 1,128 — $ 84 $ (7,032) $ 1,190 $ (7,783) Realized gain (loss) on derivative financial instruments: Energy derivative contracts (1,537) (157) (3,830) 149 $ (1,537) $ (157) $ (3,830) $ 149 Loss on derivative financial instruments not accounted for as hedges (1,453) (7,189) (2,640) (7,634) Amortization of AOCI gains frozen as a result of hedge dedesignation 997 1,054 1,994 1,750 $ (456) $ (6,135) $ (646) $ (5,884) Unaudited interim consolidated statements of operations classification: Gain (loss) on derivative financial instruments $ 1,039 $ (3,313) $ 3,205 $ (2,569) Non-regulated energy sales (1,495) (2,822) (3,851) (3,315) $ (456) $ (6,135) $ (646) $ (5,884) 21. Financial instruments (continued) (c) Supplier financing programs

Comparative figures

Comparative figures	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Comparative figures	Comparative figuresCertain of the comparative figures have been reclassified to conform to the unaudited interim consolidated financial statement presentation adopted in the current period.

Significant accounting polici_2

Significant accounting policies (Policies)	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Basis of preparation	Basis of preparation The accompanying unaudited interim consolidated financial statements and notes have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and follow disclosure required under Regulation S-X provided by the U.S. Securities and Exchange Commission. In the opinion of management, the unaudited interim consolidated financial statements include all adjustments that are of a recurring nature and necessary for a fair presentation of the results of interim operations. The significant accounting policies applied to these unaudited interim consolidated financial statements of AQN are consistent with those disclosed in the consolidated financial statements of AQN as of and for the year ended December 31, 2022.
Basis of consolidation	In the opinion of management, the unaudited interim consolidated financial statements include all adjustments that are of a recurring nature and necessary for a fair presentation of the results of interim operations.
Foreign currency translation	Foreign currency translationAQN’s reporting currency is the U.S. dollar. Within these unaudited interim consolidated financial statements, the Company denotes any amounts denominated in Canadian dollars with “C$”, in Chilean pesos with "CLP" and in Chilean Unidad de Fomento with "CLF" immediately prior to the stated amount.
Recently adopted accounting pronouncements	Recently issued accounting pronouncements (a) Recently adopted accounting pronouncements The Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2022-04, Liabilities — Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations , which requires that a buyer in a supplier finance program disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. See note 21(c) for details. (b) Recently issued accounting guidance not yet adopted The FASB issued ASU 2023-02, Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method — a consensus of the Emerging Issues Task Force, which permits a reporting entity, if certain conditions are met, to elect to account for its tax equity investments by using the proportional amortization method regardless of the program from which it receives income tax credits. The amendments in this update are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the applicability and potential impact of the new guidance.

Business acquisition (Tables)

Business acquisition (Tables)	6 Months Ended
	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Schedule of Allocation of Assets Acquired and Liabilities Assumed	The following table summarizes the allocation of the aggregate purchase price to the assets acquired and liabilities assumed at the acquisition dates. Deerfield II Working capital $ (10,709) Property, plant and equipment 194,419 Long-term debt (157,935) Asset retirement obligation (1,030) Deferred tax liability (1,603) Total net assets acquired 23,142 Cash and cash equivalents 1,662 Net assets acquired, net of cash and cash equivalents $ 21,480

Regulatory matters (Tables)

Regulatory matters (Tables)	6 Months Ended
	Jun. 30, 2023
Regulated Operations [Abstract]
Schedule of Regulatory Assets and Liabilities	Utility State or country Regulatory proceeding type Details CalPeco Electric System California General rate review On April 27, 2023, the California Public Utilities Commission (“CPUC”) issued a final order approving a revenue increase of $26,979. New rates became effective in June 2023 retroactive to January 2022 . The retroactive impact of this final order was recorded in the second quarter of 2023. St. Lawrence Gas New York General rate review On June 22, 2023 , the New York State Department of Public Services issued an Order authorizing a revenue increase of $5,249 to be implemented over three years. New rates became effective July 1, 2023. Empire Electric Missouri Securitization In February 2021, the Company's operations were impacted by extreme winter storm conditions experienced in Texas and parts of the central U.S. (“the Midwest Extreme Weather Event”). On January 19, 2022, Empire Electric filed a petition for securitization of the costs associated with the impact of the Midwest Extreme Weather Event. On March 21, 2022, Empire Electric filed a petition for securitization of the costs associated with the retirement of the Asbury generating plant. On August 18, 2022, and September 22, 2022, the Missouri Public Service Commission (“the MPSC”) issued and amended, respectively, a Report and Order authorizing Empire Electric to securitize approximately $290,383 in qualified extraordinary costs (Midwest Extreme Weather Event), energy transition costs (Asbury) and upfront financing costs associated with the proposed securitization. Empire Electric filed an appeal of the MPSC order on November 10, 2022. On August 1, 2023 the court affirmed the amount eligible for securitization of $290,383 as compared to the Company's original aggregate request of $362,420. The Company has until August 16, 2023 to move for rehearing at the Court of Appeals, and/or file a request for transfer to the Missouri Supreme Court. If the Company determines to proceed with securitization without further appeal, the Company may incur a one-time net loss of approximately $45,000. 5. Regulatory matters (continued) Regulatory assets and liabilities consist of the following: June 30, December 31, 2023 2022 Regulatory assets Fuel and commodity cost adjustments 321,806 388,294 Rate adjustment mechanism 185,395 136,198 Retired generating plant 176,650 174,609 Deferred capitalized costs 98,438 90,121 Income taxes 98,173 97,414 Pension and post-employment benefits 79,925 80,736 Environmental remediation 68,376 70,529 Wildfire mitigation and vegetation management 51,116 66,156 Clean energy and other customer programs 31,772 28,145 Asset retirement obligation 26,786 27,172 Debt premium 22,056 24,888 Cost of removal 11,084 11,084 Rate review costs 8,621 9,481 Long-term maintenance contract 5,917 6,504 Other 75,200 60,170 Total regulatory assets $ 1,261,315 $ 1,271,501 Less: current regulatory assets (136,159) (190,393) Non-current regulatory assets $ 1,125,156 $ 1,081,108 Regulatory liabilities Income taxes $ 302,770 $ 312,671 Cost of removal 191,541 191,173 Pension and post-employment benefits 75,333 68,085 Fuel and commodity cost adjustments 24,376 25,620 Clean energy and other customer programs 12,710 11,572 Rate adjustment mechanism 1,651 343 Other 18,194 18,718 Total regulatory liabilities $ 626,575 $ 628,182 Less: current regulatory liabilities (74,867) (69,865) Non-current regulatory liabilities $ 551,708 $ 558,317

Long-term investments (Tables)

Long-term investments (Tables)	6 Months Ended
	Jun. 30, 2023
Disclosure Long Term Investments And Notes Receivable [Abstract]
Schedule of Long-term Investments	Long-term investments consist of the following: June 30, December 31, 2023 2022 Long-term investments carried at fair value Atlantica $ 1,147,691 $ 1,268,140 Atlantica Yield Energy Solutions Canada Inc. 64,228 74,083 Other 1,799 1,984 $ 1,213,718 $ 1,344,207 Other long-term investments Equity-method investees (a) $ 388,516 $ 381,802 Development loans receivable from equity-method investees (a) 91,044 52,923 Other 27,485 27,600 $ 507,045 $ 462,325
Schedule of Income from Long-term Investments	Income (loss) from long-term investments for the three and six months ended June 30 is as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Fair value gain (loss) on investments carried at fair value Atlantica $ (299,653) $ (137,586) $ (120,449) $ (171,370) Atlantica Yield Energy Solutions Canada Inc. (11,763) $ (5,815) (11,567) (12,395) Other 6 $ (121) (10) (264) $ (311,410) $ (143,522) $ (132,026) $ (184,029) Dividend and interest income from investments carried at fair value Atlantica $ 21,788 $ 21,543 $ 43,577 $ 43,087 Atlantica Yield Energy Solutions Canada Inc. 4,821 5,397 10,678 12,691 Other 7 12 17 10 $ 26,616 $ 26,952 $ 54,272 $ 55,788 Other long-term investments Equity method loss (2,434) (2,918) (153) (7,449) Interest and other income 9,532 6,108 20,223 11,621 $ 7,098 $ 3,190 $ 20,070 $ 4,172 Loss from long-term investments $ (277,696) $ (113,380) $ (57,684) $ (124,069) Summarized combined information for AQN's equity method investees (presented at 100%) is as follows: Six months ended June 30 2023 2022 Revenue $ 49,467 $ 20,455 Net income (loss) $ 1,836 $ (30,246) Other comprehensive loss (a) $ (2,807) $ (125,811) Net loss attributable to AQN $ (153) $ (7,449) Other comprehensive loss attributable to AQN (a) $ (2,076) $ (67,352) (a) Other comprehensive loss represents the Company’s proportion of the change in fair value, recorded in OCI at the investee level, on energy derivative financial instruments designated as a cash flow hedge.
Schedule of Investments in Partnerships and Joint Ventures	Summarized combined information for AQN's investments in partnerships and joint ventures is as follows: June 30, December 31, 2023 2022 Total assets $ 2,749,895 $ 2,740,132 Total liabilities 1,522,656 1,507,079 Net assets $ 1,227,239 $ 1,233,053 AQN's ownership interest in the entities 331,600 332,663 Difference between investment carrying amount and underlying equity in net assets (a) 56,916 49,139 AQN's investment carrying amount for the entities $ 388,516 $ 381,802 (a) The difference between the investment carrying amount and the underlying equity in net assets relates primarily to development fees, interest capitalized while the projects are under construction, the fair value of guarantees provided by the Company in regards to the investments and transaction costs.
Schedule of Variable Interest Entities	Summarized combined information for AQN's VIEs is as follows: June 30, December 31, 2023 2022 AQN's maximum exposure in regards to VIEs Carrying amount $ 121,176 $ 122,752 Development loans receivable 91,044 52,923 Performance guarantees and other commitments on behalf of VIEs 674,874 658,224 $ 887,094 $ 833,899

Long-term debt (Tables)

Long-term debt (Tables)	6 Months Ended
	Jun. 30, 2023
Debt Disclosure [Abstract]
Schedule of Long Term Debt	Long-term debt consists of the following: Borrowing type Weighted average coupon Maturity Par value June 30, December 31, 2023 2022 Senior unsecured revolving credit facilities (a) — 2024-2028 N/A $ 801,929 $ 351,786 Senior unsecured bank credit — 2023-2031 N/A 788,906 773,643 Commercial paper — 2024 N/A 498,613 407,000 U.S. dollar borrowings Senior unsecured notes 1.18 % 2026 $ 1,150,000 1,143,856 1,142,814 Senior unsecured notes (b) 3.38 % 2023-2047 $ 1,490,000 1,481,682 1,496,101 Senior unsecured utility notes 6.34 % 2023-2035 $ 142,000 153,435 154,271 Senior secured utility bonds 4.71 % 2026-2044 $ 556,203 552,479 554,822 Canadian dollar borrowings Senior unsecured notes 3.68 % 2027-2050 C$ 1,200,000 903,360 882,899 Senior secured project notes 10.21 % 2027 C$ 18,512 13,982 15,024 Chilean Unidad de Fomento borrowings Senior unsecured utility bonds 3.98 % 2028-2040 CLF 1,579 81,532 77,206 $ 6,419,774 $ 5,855,566 Subordinated borrowings Subordinated unsecured notes 5.25 % 2082 C$ 400,000 298,033 $ 291,238 Subordinated unsecured notes 5.56 % 2078-2082 $ 1,387,500 1,365,340 1,365,213 $ 1,663,373 $ 1,656,451 $ 8,083,147 $ 7,512,017 Less: current portion (513,803) (423,274) $ 7,569,344 $ 7,088,743 Short-term obl igations of $760,386 that are expected to be refinanced using the long-term credit facilities are presented as long-term debt. Long-term debt issued at a subsidiary level (project notes or utility bonds) relating to a specific operating facility is generally collateralized by the respective facility with no other recourse to the Company. Long-term debt issued at a subsidiary level whether or not collateralized generally has certain financial covenants, which must be maintained on a quarterly basis. Non-compliance with the covenants could restrict cash distributions/dividends to the Company from the specific facilities. 7. Long-term debt (continued) The following table sets out the bank credit facilities available to AQN and its operating groups: June 30, December 31, 2023 2022 Revolving and term credit facilities $ 4,564,000 $ 4,513,300 Funds drawn on facilities/commercial paper issued (2,089,600) (1,532,493) Letters of credit issued (407,900) (465,200) Liquidity available under the facilities $ 2,066,500 $ 2,515,607 Undrawn portion of uncommitted letter of credit facilities (307,600) (226,900) Cash on hand 100,258 57,623 Total liquidity and capital reserves $ 1,859,158 $ 2,346,330 Recent financing activities: (a) Senior unsecured revolving credit facilities Corporate On June 1, 2023, the Company terminated its former $50,000 uncommitted bi-lateral credit facility. (b) U.S. dollar senior unsecured notes Subsequent to quarter-end, on July 31, 2023 the Company repaid a $75,000 senior unsecured note on its maturity.
Schedule of Interest Expense	Interest expense for the three and six months ended June 30, 2023 and 2022 consists of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Long-term debt $ 65,046 $ 65,746 $ 128,814 $ 127,832 Commercial paper, credit facility draws and related fees 27,714 5,466 52,139 9,051 Accretion of fair value adjustments (824) (4,471) (4,223) (9,014) Capitalized interest and AFUDC capitalized on regulated property (4,420) (906) (8,304) (2,136) Other 2,147 (1,262) 3,155 (3,217) $ 89,663 $ 64,573 $ 171,581 $ 122,516

Pension and other post-employ_2

Pension and other post-employment benefits (Tables)	6 Months Ended
	Jun. 30, 2023
Retirement Benefits [Abstract]
Summary of Components of Net Benefit Costs For Pension Plans and OPEB Recorded as Part of Administrative Expenses	The following table lists the components of net benefit costs for the pension plans and other post-employment benefits (“OPEB”) in the unaudited interim consolidated statements of operations for the three and six months ended June 30: Pension benefits Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Service cost $ 3,166 $ 4,532 $ 6,093 $ 8,388 Non-service costs Interest cost 7,906 6,778 16,299 12,841 Expected return on plan assets (7,947) (10,519) (16,263) (20,843) Amortization of net actuarial losses (gains) (71) 1,257 (195) 2,046 Amortization of prior service credits (373) (389) (746) (792) Impact of regulatory accounts 4,588 4,664 8,683 11,002 $ 4,103 $ 1,791 $ 7,778 $ 4,254 Net benefit cost $ 7,269 $ 6,323 $ 13,871 $ 12,642 OPEB Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Service cost $ 902 $ 1,554 $ 1,891 $ 3,109 Non-service costs Interest cost 2,891 2,282 6,329 4,641 Expected return on plan assets (2,331) (2,841) (5,077) (5,682) Amortization of net actuarial gains (561) (86) (1,122) (172) Amortization of prior service credits (213) 6 (426) 12 Impact of regulatory accounts 1,417 1,106 2,785 1,783 $ 1,203 $ 467 $ 2,489 $ 582 Net benefit cost $ 2,105 $ 2,021 $ 4,380 $ 3,691

Other long-term liabilities (Ta

Other long-term liabilities (Tables)	6 Months Ended
	Jun. 30, 2023
Other Liabilities Disclosure [Abstract]
Schedule Of Other Long Term Liabilities	Other long-term liabilities consist of the following: June 30, December 31, 2023 2022 Contract adjustment payments $ 78,056 $ 113,876 Asset retirement obligations 113,678 116,584 Advances in aid of construction 90,096 88,546 Environmental remediation obligation 41,092 42,457 Customer deposits 35,360 34,675 Unamortized investment tax credits 17,419 17,649 Deferred credits and contingent consideration 45,937 39,498 Preferred shares, Series C (a) 12,067 12,072 Hook-up fees 25,813 32,463 Lease liabilities 21,415 21,834 Contingent development support obligations 9,129 8,824 Note payable to related party 25,808 25,808 Other 34,004 41,156 $ 549,874 $ 595,442 Less: current portion (119,495) (134,212) $ 430,379 $ 461,230

Shareholders' capital (Tables)

Shareholders' capital (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Schedule of Number of Common Shares	Number of common shares Six months ended June 30 2023 2022 Common shares, beginning of period 683,614,803 671,960,276 Dividend reinvestment plan 4,370,289 3,014,264 Exercise of share-based awards (b) 772,591 673,852 Conversion of convertible debentures 1,415 754 Common shares, end of period 688,759,098 675,649,146
Schedule of Fair Value of Share Options Granted	The following assumptions were used in determining the fair value of share options granted: 2023 Risk-free interest rate 3.4 % Expected volatility 27 % Expected dividend yield 8.6 % Expected life 5.50 years Weighted average grant date fair value per option C$1.04

Accumulated other comprehensi_2

Accumulated other comprehensive income (loss) (Tables)	6 Months Ended
	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	AOCI consists of the following balances, net of tax: Foreign currency cumulative translation Unrealized gain (loss) on cash flow hedges Pension and post-employment actuarial changes Total Balance, January 1, 2022 $ (76,615) $ (3,514) $ 8,452 $ (71,677) OCI (18,013) (128,838) 23,722 (123,129) Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations (5,489) 34,543 4,039 33,093 Net current period OCI $ (23,502) $ (94,295) $ 27,761 $ (90,036) OCI attributable to the non-controlling interests 1,650 — — 1,650 Net current period OCI attributable to shareholders of AQN (21,852) (94,295) 27,761 (88,386) Balance, December 31, 2022 $ (98,467) $ (97,809) $ 36,213 $ (160,063) OCI 16,343 52,435 — 68,778 Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations (788) 1,851 (1,303) (240) Net current period OCI $ 15,555 $ 54,286 $ (1,303) $ 68,538 OCI attributable to the non-controlling interests (212) — — (212) Net current period OCI attributable to shareholders of AQN $ 15,343 $ 54,286 $ (1,303) $ 68,326 Balance, June 30, 2023 $ (83,124) $ (43,523) $ 34,910 $ (91,737)

Dividends (Tables)

Dividends (Tables)	6 Months Ended
	Jun. 30, 2023
Disclosure Cash Dividends [Abstract]
Schedule of Dividends	Dividends declared were as follows: Three months ended June 30 2023 2022 Dividend Dividend per share Dividend Dividend per share Common shares $ 75,379 $ 0.1085 $ 122,636 $ 0.1808 Series A preferred shares C$ 1,549 C$ 0.3226 C$ 1,549 C$ 0.3226 Series D preferred shares C$ 1,273 C$ 0.3182 C$ 1,273 C$ 0.3182 Six months ended June 30 2023 2022 Dividend Dividend per share Dividend Dividend per share Common shares $ 150,765 $ 0.2170 $ 238,209 $ 0.3514 Series A preferred shares C$ 3,097 C$ 0.6453 C$ 3,097 C$ 0.6453 Series D preferred shares C$ 2,546 C$ 0.6364 C$ 2,546 C$ 0.6364

Non-controlling interests and_2

Non-controlling interests and redeemable non-controlling interests (Tables)	6 Months Ended
	Jun. 30, 2023
Noncontrolling Interest [Abstract]
Schedule of Net Loss Attributable to Non-controlling Interests	Net effect attributable to non-controlling interests consists of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 HLBV and other adjustments attributable to: Non-controlling interests - tax equity partnership units $ 25,172 $ 31,100 $ 59,743 $ 71,961 Non-controlling interests - redeemable tax equity partnership units 331 1,337 662 2,936 Other net loss attributable to: Non-controlling interests (10,064) (416) (18,387) (1,934) $ 15,439 $ 32,021 $ 42,018 $ 72,963 Redeemable non-controlling interest, held by related party (6,349) (3,086) (12,399) (5,661) Net effect of non-controlling interests $ 9,090 $ 28,935 $ 29,619 $ 67,302

Income taxes (Tables)

Income taxes (Tables)	6 Months Ended
	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The differences are as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Expected income tax recovery at Canadian statutory rate $ (84,596) $ (22,562) $ (11,903) $ (6,119) Increase (decrease) resulting from: Effect of differences in tax rates on transactions in and within foreign jurisdictions and change in tax rates (5,560) (6,562) (16,718) (19,039) Adjustments from investments carried at fair value 40,357 17,216 11,092 18,229 Change in valuation allowance 676 (1,582) (791) (1,731) Non-controlling interests share of income 2,201 4,587 12,393 15,640 Acquisition-related state deferred tax adjustments — — — 7,600 Tax credits (8,095) (11,992) (20,505) (22,023) Amortization and settlement of excess deferred income tax (2,456) (2,296) (6,207) (6,329) Other 1,515 372 1,382 405 Income tax recovery $ (55,958) $ (22,819) $ (31,257) $ (13,367)
Summary of Valuation Allowance	The following table illustrates the movement in the deferred tax valuation allowance: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Beginning balance $ 97,396 $ 28,959 $ 107,583 $ 27,470 Charged to income tax recovery 676 (1,582) (791) (1,731) Charged (reduction) to OCI (6,418) 2,664 (15,138) 4,302 Reductions to other accounts — (211) — (211) Ending balance $ 91,654 $ 29,830 $ 91,654 $ 29,830

Other net losses (Tables)

Other net losses (Tables)	6 Months Ended
	Jun. 30, 2023
Other Income and Expenses [Abstract]
Schedule of Other Net Losses (Gains)	Other net losses (gains) consist of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Acquisition and transition-related costs $ — $ 2,315 $ — $ 3,940 Kentucky termination costs (a) 43,808 3,535 46,527 4,075 Acquisition-related settlement payment (b) (11,983) — (11,983) — Other 8,542 2,802 9,285 5,367 $ 40,367 $ 8,652 $ 43,829 $ 13,382 16. Other net losses (continued) (a) Kentucky termination costs The loss related to the termination of the Kentucky Power Transaction includes $38,795 for the write-off of capitalized costs which are primarily related to the implementation of an enterprise software solution. The remaining amount relates to the transaction costs, severance costs, and other termination costs. (b) Acquisition-related settlement payment During the period, the Company received $12,814 as an acquisition-related settlement payment in connection with the Suralis (formerly called ESSAL) acquisition. The Company also incurred legal fees of $831 in relation to this settlement.

Basic and diluted net earning_2

Basic and diluted net earnings (loss) per share (Tables)	6 Months Ended
	Jun. 30, 2023
Earnings Per Share, Basic and Diluted EPS [Abstract]
Schedule of Reconciliation of Net Earnings (Loss) and Weighted Average Shares Used in Computation of Basic and Diluted Earnings per Share	The reconciliation of the net earnings (loss) and the weighted average shares used in the computation of basic and diluted earnings (loss) per share are as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Net earnings (loss) attributable to shareholders of AQN (253,231) (33,387) $ 16,908 $ 57,578 Series A preferred shares dividend 1,142 1,219 2,290 2,437 Series D preferred shares dividend 938 1,001 1,882 2,003 Net earnings (loss) attributable to common shareholders of AQN – basic and diluted $ (255,311) $ (35,607) $ 12,736 $ 53,138 Weighted average number of shares Basic 687,847,010 674,742,897 688,277,615 674,720,319 Effect of dilutive securities — — 2,127,104 3,046,590 Diluted 687,847,010 674,742,897 690,404,719 677,766,909

Segmented information (Tables)

Segmented information (Tables)	6 Months Ended
	Jun. 30, 2023
Segment Reporting [Abstract]
Schedule of Results of Operations and Assets for Segments	Three months ended June 30, 2023 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) $ 532,233 $ 71,694 $ — $ 603,927 Other revenue 14,200 9,380 364 23,944 Fuel, power and water purchased 138,374 3,782 — 142,156 Net revenue 408,059 77,292 364 485,715 Operating expenses (recovery) 213,891 27,737 (146) 241,482 Administrative expenses 13,548 11,044 1,100 25,692 Depreciation and amortization 84,754 33,291 403 118,448 Loss on foreign exchange — — 6,379 6,379 Operating income (loss) 95,866 5,220 (7,372) 93,714 Interest expense (42,724) (16,420) (30,519) (89,663) Income (loss) from long-term investments 9,332 26,259 (313,287) (277,696) Other expenses (41,010) (1,197) (2,427) (44,634) Earnings (loss) before income taxes $ 21,464 $ 13,862 $ (353,605) $ (318,279) Capital expenditures $ 225,505 $ 19,704 $ — $ 245,209 (1) Renewable Energy Group revenue includes $4,328 related to net hedging gain from energy derivative contracts and availability credits for the three months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $9,083 related to alternative revenue programs for the three months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. 18. Segmented information (continued) Three months ended June 30, 2022 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) $ 507,095 $ 92,141 $ — $ 599,236 Other revenue 12,559 7,208 382 20,149 Fuel, power and water purchased 159,256 9,646 — 168,902 Net revenue 360,398 89,703 382 450,483 Operating expenses 179,258 27,053 19 206,330 Administrative expenses 10,966 8,510 631 20,107 Depreciation and amortization 76,228 36,057 262 112,547 Loss on foreign exchange — — 4,464 4,464 Operating income (loss) 93,946 18,083 (4,994) 107,035 Interest expense (23,860) (14,862) (25,851) (64,573) Income (loss) from long-term investments 5,265 26,675 (145,320) (113,380) Other expenses (2,898) (4,723) (6,602) (14,223) Earnings (loss) before income taxes $ 72,453 $ 25,173 $ (182,767) $ (85,141) Capital expenditures $ 179,878 $ 67,660 $ — $ 247,538 (1) Renewable Energy Group revenue includes $25,062 related to net hedging loss from energy derivative contracts and availability credits for the three months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $8,811 related to alternative revenue programs for the three months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. 18. Segmented information (continued) Six months ended June 30, 2023 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) 1,206,394 150,410 $ — $ 1,356,804 Other revenue 28,218 20,751 725 49,694 Fuel, power and water purchased 405,524 11,588 — 417,112 Net revenue 829,088 159,573 725 989,386 Operating expenses 401,315 60,447 7 461,769 Administrative expenses 21,873 18,474 3,178 43,525 Depreciation and amortization 170,611 68,836 642 240,089 Loss on foreign exchange — — 7,815 7,815 Operating income (loss) 235,289 11,816 (10,917) 236,188 Interest expense (81,202) (31,315) (59,064) (171,581) Income (loss) from long-term investments 19,660 59,526 (136,870) (57,684) Other expenses (45,259) (1,197) (4,435) (50,891) Earnings (loss) before income taxes $ 128,488 $ 38,830 $ (211,286) $ (43,968) Capital expenditures 372,886 42,072 — 414,958 June 30, 2023 Property, plant and equipment $ 8,757,413 $ 3,550,202 $ 29,316 $ 12,336,931 Investments carried at fair value 1,799 1,211,919 — 1,213,718 Equity-method investees 57,586 322,141 8,789 388,516 Total assets 12,247,694 5,401,782 319,237 17,968,713 (1) Renewable Energy Group revenue includes $11,527 related to net hedging gain from energy derivative contracts and availability credits for the six months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $12,789 related to alternative revenue programs for the six months ended June 30, 2023 that do not represent revenue recognized from contracts with customers. 18. Segmented information (continued) Six months ended June 30, 2022 Regulated Services Group Renewable Energy Group Corporate Total Revenue (1)(2) $ 1,129,854 $ 177,901 $ — $ 1,307,755 Other revenue 27,547 16,552 768 44,867 Fuel, power and water purchased 393,828 22,585 — 416,413 Net revenue 763,573 171,868 768 936,209 Operating expenses 363,667 54,643 22 418,332 Administrative expenses 19,036 16,055 2,468 37,559 Depreciation and amortization 156,511 75,474 526 232,511 Loss on foreign exchange — — 4,726 4,726 224,359 25,696 (6,974) 243,081 Gain on sale of renewable assets — 1,200 — 1,200 Operating income (loss) 224,359 26,896 (6,974) 244,281 Interest expense (45,286) (30,575) (46,655) (122,516) Income (loss) from long-term investments 9,774 54,301 (188,144) (124,069) Other expenses (7,786) (4,978) (8,023) (20,787) Earnings (loss) before income taxes $ 181,061 $ 45,644 $ (249,796) $ (23,091) Capital expenditures 435,463 139,774 — 575,237 December 31, 2022 Property, plant and equipment $ 8,554,938 $ 3,360,687 $ 29,260 $ 11,944,885 Investments carried at fair value 1,984 1,342,223 — 1,344,207 Equity-method investees 56,199 310,103 15,500 381,802 Total assets 12,109,575 5,251,933 266,105 17,627,613 (1) Renewable Energy Group revenue includes $29,892 related to net hedging loss from energy derivative contracts and availability credits for the six months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. (2) Regulated Services Group revenue includes $15,089 related to alternative revenue programs for the six months ended June 30, 2022 that do not represent revenue recognized from contracts with customers. The majority of non-regulated energy sales are earned from contracts with large public utilities. The Company has sought to mitigate its credit risk by selling energy to large utilities in various North American locations. None of the utilities contribute more than 10% of total revenue.
Schedule of Information on Operations by Geographic Area	Information on operations by geographic area is as follows: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Revenue United States $ 503,777 $ 492,373 $ 1,144,201 $ 1,091,246 Canada 37,788 41,397 90,916 95,232 Other regions 86,306 85,615 171,381 166,144 $ 627,871 $ 619,385 $ 1,406,498 $ 1,352,622

Commitments and contingencies (

Commitments and contingencies (Tables)	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Estimates of Future Commitments	Detailed below are estimates of future commitments under these arrangements: Year 1 Year 2 Year 3 Year 4 Year 5 Thereafter Total Power purchase (1) $ 83,606 $ 47,603 $ 29,461 $ 12,397 $ 12,643 $ 136,244 $ 321,954 Natural gas supply and service agreements (2) 93,739 92,102 51,456 38,265 33,088 171,141 479,791 Service agreements 73,974 61,943 58,602 48,070 50,529 285,567 578,685 Capital projects 16,537 — — — — — 16,537 Land easements and others 13,967 14,159 14,344 14,514 14,693 500,830 572,507 Total $ 281,823 $ 215,807 $ 153,863 $ 113,246 $ 110,953 $ 1,093,782 $ 1,969,474 (1) Power purchase: AQN’s electric distribution facilities have commitments to purchase physical quantities of power for load serving requirements. The commitment amounts included in the table above are based on market prices as at June 30, 2023. However, the effects of purchased power unit cost adjustments are mitigated through a purchased power rate-adjustment mechanism. (2) Natural gas supply and service agreements: AQN’s gas distribution facilities and thermal generation facilities have commitments to purchase physical quantities of natural gas under contracts for purposes of load serving requirements and of generating power.

Non-cash operating items (Table

Non-cash operating items (Tables)	6 Months Ended
	Jun. 30, 2023
Disclosure Changes In Non Cash Operating Items [Abstract]
Schedule of Changes in Non-Cash Operating Items	The changes in non-cash operating items consist of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Accounts receivable $ 21,450 $ (8,641) $ 35,213 $ (49,253) Fuel and natural gas in storage (12,837) (23,362) 19,657 (7,128) Supplies and consumables inventory (11,678) (3,006) (22,454) (10,775) Income taxes recoverable 5,134 (861) 5,683 2,071 Prepaid expenses 13,231 (5,203) 6,183 (12,553) Accounts payable 71,253 48,424 18,033 26,759 Accrued liabilities 38,215 (22,585) (88,895) 30,711 Current income tax liability (1,039) (1,350) 2,563 853 Asset retirements and environmental obligations 363 (10,855) (706) (11,354) Net regulatory assets and liabilities (11,712) (9,201) (28,633) (54,119) $ 112,380 $ (36,640) $ (53,356) $ (84,788)

Financial instruments (Tables)

Financial instruments (Tables)	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Financial Instruments	Fair value of financial instruments June 30, 2023 Carrying Fair Level 1 Level 2 Level 3 Long-term investments carried at fair value $ 1,213,718 $ 1,213,718 $ 1,149,505 $ — $ 64,213 Development loans and other receivables 98,313 91,547 — 91,547 — Derivative instruments: Commodity contracts for regulatory operations 139 139 — 139 — Interest rate swaps designated as a hedge 65,711 65,711 — 65,711 — Interest rate cap not designated as hedge 3,490 3,490 — 3,490 — Congestion revenue rights not designated as hedge 7,757 7,757 — — 7,757 Cross-currency swap designated as a net investment hedge 464 464 — 464 — Total derivative instruments 77,561 77,561 — 69,804 7,757 Total financial assets $ 1,389,592 $ 1,382,826 $ 1,149,505 $ 161,351 $ 71,970 Long-term debt $ 8,083,147 $ 7,528,421 $ 2,716,700 $ 4,811,721 $ — Notes payable to related party 25,808 15,188 — 15,188 — Convertible debentures 238 285 285 — — Preferred shares, Series C 12,067 11,943 — 11,943 — Derivative instruments: Energy contracts designated as a cash flow hedge 64,370 64,370 — — 64,370 Energy contracts not designated as hedge 11,515 11,515 — — 11,515 Cross-currency swap designated as a net investment hedge 15,550 15,550 — 15,550 — Cross-currency swap designated as a cash flow hedge 9,736 9,736 — 9,736 — Commodity contracts for regulated operations 1,441 1,441 — 1,441 — Total derivative instruments 102,612 102,612 — 26,727 75,885 Total financial liabilities $ 8,223,872 $ 7,658,449 $ 2,716,985 $ 4,865,579 $ 75,885 21. Financial instruments (continued) (a) Fair value of financial instruments (continued) December 31, 2022 Carrying Fair Level 1 Level 2 Level 3 Long-term investments carried at fair value $ 1,344,207 $ 1,344,221 $ 1,270,138 $ — $ 74,083 Development loans and other receivables 53,680 50,300 — 50,300 — Derivative instruments: Energy contracts not designated as hedge 393 393 — — 393 Interest rate swap designated as a hedge 69,188 69,188 — 69,188 — Currency forward contract not designated as a hedge 2,659 2,659 — 2,659 — Congestion revenue 10,110 10,110 — — 10,110 Cross-currency swap designated as a net investment hedge 1,267 1,267 — 1,267 — Commodity contracts for regulated operations 283 283 — 283 — Total derivative instruments 83,900 83,900 — 73,397 10,503 Total financial assets $ 1,481,787 $ 1,478,421 $ 1,270,138 $ 123,697 $ 84,586 Long-term debt $ 7,512,017 $ 6,699,031 $ 2,623,628 $ 4,075,403 — Notes payable to related party 25,808 15,180 — 15,180 — Convertible debentures 245 276 276 — — Preferred shares, Series C 12,072 11,675 — 11,675 — Derivative instruments: Energy contracts designated as a cash flow hedge 120,284 120,284 — — 120,284 Energy contracts not designated as hedge 8,617 8,617 — — 8,617 Cross-currency swap designated as a net investment hedge 24,371 24,371 — 24,371 — Cross-currency swap designated as a cash flow hedge 15,435 15,435 — 15,435 — Commodity contracts for regulated operations 1,614 1,614 — 1,614 — Total derivative instruments 170,321 170,321 — 41,420 128,901 Total financial liabilities $ 7,720,463 $ 6,896,483 $ 2,623,904 $ 4,143,678 $ 128,901
Schedule of Long-Term Energy Derivative Contracts	The Company has sought to reduce the price risk on the expected future sale of power generation at the Sandy Ridge, Senate, Minonk, and Sugar Creek Wind Facilities by entering into the following long-term energy derivative contracts. Notional quantity Expiry Receive average Pay floating price 3,772,462 September 2030 $25.00 Illinois Hub 404,612 December 2028 $29.00 PJM Western HUB 1,707,551 December 2027 $22.00 NI HUB 1,471,065 December 2027 $36.00 ERCOT North HUB
Schedule of Derivative Financial Instruments Designated as Cash Flow Hedge, Effect on Consolidated Statement of Operations	The following table summarizes OCI attributable to derivative financial instruments designated as a cash flow hedge: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Effective portion of cash flow hedge $ 29,949 $ (20,298) $ 52,435 $ (81,852) Amortization of cash flow hedge (1,421) (3,828) (4,908) (3,992) Amounts reclassified from AOCI 7,893 11,247 6,759 14,079 OCI attributable to shareholders of AQN $ 36,421 $ (12,879) $ 54,286 $ (71,765)
Schedule of Effects on Statement of Operations of Derivative Financial Instruments Not Designated as Hedges	The effects on the unaudited interim consolidated statements of operations of derivative financial instruments not designated as hedges consist of the following: Three months ended June 30 Six months ended June 30 2023 2022 2023 2022 Unrealized gain (loss) on derivative financial instruments: Interest rate swaps $ — $ (4,680) $ — $ (4,680) Energy derivative contracts 84 (2,352) 62 (3,103) Commodity contracts — — 1,128 — $ 84 $ (7,032) $ 1,190 $ (7,783) Realized gain (loss) on derivative financial instruments: Energy derivative contracts (1,537) (157) (3,830) 149 $ (1,537) $ (157) $ (3,830) $ 149 Loss on derivative financial instruments not accounted for as hedges (1,453) (7,189) (2,640) (7,634) Amortization of AOCI gains frozen as a result of hedge dedesignation 997 1,054 1,994 1,750 $ (456) $ (6,135) $ (646) $ (5,884) Unaudited interim consolidated statements of operations classification: Gain (loss) on derivative financial instruments $ 1,039 $ (3,313) $ 3,205 $ (2,569) Non-regulated energy sales (1,495) (2,822) (3,851) (3,315) $ (456) $ (6,135) $ (646) $ (5,884) 21. Financial instruments (continued) (c) Supplier financing programs

Notes to the Unaudited Interi_2

Notes to the Unaudited Interim Consolidated Financial Statements - Additional Information (Details)	6 Months Ended
	Jun. 30, 2023 business_unit
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business units	2

Business acquisition - Addition

Business acquisition - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 15, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Business Acquisition [Line Items]
Kentucky termination costs		$ 43,808	$ 3,535	$ 46,527	$ 4,075
Kentucky Power Company and AEP Kentucky Transmission Company, Inc.
Business Acquisition [Line Items]
Kentucky termination costs		$ 43,808		$ 46,527
Deerfield II Wind Facility
Business Acquisition [Line Items]
Ownership interest acquired (percent)	50%
Total purchase price	$ 23,142
Tax equity funding	98,955
Debt repaid upon maturity	$ 158,550

Business acquisition - Schedule

Business acquisition - Schedule of Preliminary Allocation Of The Acquisition Prices Of Assets Acquired and Liabilities Assumed (Details) - Deerfield II Wind Facility $ in Thousands	Jun. 15, 2023 USD ($)
Business Acquisition [Line Items]
Working capital	$ (10,709)
Property, plant and equipment	194,419
Long-term debt	(157,935)
Asset retirement obligation	(1,030)
Deferred tax liability	(1,603)
Total net assets acquired	23,142
Cash and cash equivalents	1,662
Net assets acquired, net of cash and cash equivalents	$ 21,480

Accounts receivable - Additiona

Accounts receivable - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts receivable	$ 28,646	$ 24,857
Unbilled revenue
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable balances	$ 89,745	$ 149,015

Regulatory matters - Regulatory

Regulatory matters - Regulatory Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Regulatory Liabilities [Line Items]
Total regulatory assets	$ 1,261,315	$ 1,271,501
Less: current regulatory assets	(136,159)	(190,393)
Non-current regulatory assets	1,125,156	1,081,108
Total regulatory liabilities	626,575	628,182
Less: current regulatory liabilities	(74,867)	(69,865)
Non-current regulatory liabilities	551,708	558,317
Income taxes
Regulatory Liabilities [Line Items]
Total regulatory liabilities	302,770	312,671
Cost of removal
Regulatory Liabilities [Line Items]
Total regulatory liabilities	191,541	191,173
Pension and post-employment benefits
Regulatory Liabilities [Line Items]
Total regulatory liabilities	75,333	68,085
Fuel and commodity cost adjustments
Regulatory Liabilities [Line Items]
Total regulatory liabilities	24,376	25,620
Clean energy and other customer programs
Regulatory Liabilities [Line Items]
Total regulatory liabilities	12,710	11,572
Rate adjustment mechanism
Regulatory Liabilities [Line Items]
Total regulatory liabilities	1,651	343
Other
Regulatory Liabilities [Line Items]
Total regulatory liabilities	18,194	18,718
Fuel and commodity cost adjustments
Regulatory Liabilities [Line Items]
Total regulatory assets	321,806	388,294
Rate adjustment mechanism
Regulatory Liabilities [Line Items]
Total regulatory assets	185,395	136,198
Retired generating plant
Regulatory Liabilities [Line Items]
Total regulatory assets	176,650	174,609
Deferred capitalized costs
Regulatory Liabilities [Line Items]
Total regulatory assets	98,438	90,121
Income taxes
Regulatory Liabilities [Line Items]
Total regulatory assets	98,173	97,414
Pension and post-employment benefits
Regulatory Liabilities [Line Items]
Total regulatory assets	79,925	80,736
Environmental remediation
Regulatory Liabilities [Line Items]
Total regulatory assets	68,376	70,529
Wildfire mitigation and vegetation management
Regulatory Liabilities [Line Items]
Total regulatory assets	51,116	66,156
Clean energy and other customer programs
Regulatory Liabilities [Line Items]
Total regulatory assets	31,772	28,145
Asset retirement obligation
Regulatory Liabilities [Line Items]
Total regulatory assets	26,786	27,172
Debt premium
Regulatory Liabilities [Line Items]
Total regulatory assets	22,056	24,888
Cost of removal
Regulatory Liabilities [Line Items]
Total regulatory assets	11,084	11,084
Rate review costs
Regulatory Liabilities [Line Items]
Total regulatory assets	8,621	9,481
Long-term maintenance contract
Regulatory Liabilities [Line Items]
Total regulatory assets	5,917	6,504
Other
Regulatory Liabilities [Line Items]
Total regulatory assets	$ 75,200	$ 60,170

Regulatory Matters - Regulato_2

Regulatory Matters - Regulatory Proceedings (Details) - USD ($) $ in Thousands	Aug. 01, 2023	Jun. 22, 2023	Apr. 27, 2023	Nov. 10, 2022
CalPeco Electric System
Regulatory Liabilities [Line Items]
Approved revenue increase			$ 26,979
St, Lawrence Gas
Regulatory Liabilities [Line Items]
Approved revenue increase		$ 5,249
Empire Electric System - Missouri
Regulatory Liabilities [Line Items]
Securitization of qualified extraordinary costs requested				$ 362,420
Empire Electric System - Missouri | Subsequent Event
Regulatory Liabilities [Line Items]
Securitization of qualified extraordinary costs affirmed	$ 290,383
Estimated one-time loss on securitization	$ 45,000

Long-term investments - Schedul

Long-term investments - Schedule of Long-Term Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investments carried at fair value	$ 1,213,718	$ 1,344,207
Equity-method investees	388,516	381,802
Other	27,485	27,600
Long-term investments	507,045	462,325
Notes Receivable | Development loans
Schedule of Equity Method Investments [Line Items]
Development loans receivable from equity-method investees	91,044	52,923
Atlantica
Schedule of Equity Method Investments [Line Items]
Investments carried at fair value	1,147,691	1,268,140
Atlantica Yield Energy Solutions Canada Inc.
Schedule of Equity Method Investments [Line Items]
Investments carried at fair value	64,228	74,083
Other
Schedule of Equity Method Investments [Line Items]
Investments carried at fair value	$ 1,799	$ 1,984

Long-term investments - Income

Long-term investments - Income from Long-term Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of Equity Method Investments [Line Items]
Fair value gain (loss) on investments carried at fair value	$ (311,410)	$ (143,522)	$ (132,026)	$ (184,029)
Dividend and interest income from investments carried at fair value	26,616	26,952	54,272	55,788
Equity method loss	(2,434)	(2,918)	(153)	(7,449)
Interest and other income	9,532	6,108	20,223	11,621
Income (loss) from other long-term investments	7,098	3,190	20,070	4,172
Loss from long-term investments	(277,696)	(113,380)	(57,684)	(124,069)
Atlantica
Schedule of Equity Method Investments [Line Items]
Fair value gain (loss) on investments carried at fair value	(299,653)	(137,586)	(120,449)	(171,370)
Dividend and interest income from investments carried at fair value	21,788	21,543	43,577	43,087
Atlantica Yield Energy Solutions Canada Inc.
Schedule of Equity Method Investments [Line Items]
Fair value gain (loss) on investments carried at fair value	(11,763)	(5,815)	(11,567)	(12,395)
Dividend and interest income from investments carried at fair value	4,821	5,397	10,678	12,691
Other
Schedule of Equity Method Investments [Line Items]
Fair value gain (loss) on investments carried at fair value	6	(121)	(10)	(264)
Dividend and interest income from investments carried at fair value	$ 7	$ 12	$ 17	$ 10

Long-term investments - Additio

Long-term investments - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest in partnerships and joint ventures	$ 388,516	$ 381,802
Capital account contributions	10,390
Project construction	9,823
Fair value of support provided	9,129	$ 8,824
Guarantor obligations	$ 798,717

Long-term investments - Investm

Long-term investments - Investments in Significant Partnerships and Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Equity Method Investment, Summarized Financial Information [Abstract]
Total assets	$ 17,968,713		$ 17,968,713		$ 17,627,613
AQN's investment carrying amount for the entities	388,516		388,516		381,802
Income Statement [Abstract]
Revenue	627,871	$ 619,385	1,406,498	$ 1,352,622
Net income (loss)	(262,321)	(62,322)	(12,711)	(9,724)
Other comprehensive loss	35,728	$ (61,412)	68,538	(112,446)	(90,036)
Investments in Significant Partnerships and Joint Ventures
Equity Method Investment, Summarized Financial Information [Abstract]
Total assets	2,749,895		2,749,895		2,740,132
Total liabilities	1,522,656		1,522,656		1,507,079
Income Statement [Abstract]
Revenue			49,467	20,455
Net income (loss)			1,836	(30,246)
Other comprehensive loss			(2,807)	(125,811)
Investments in Significant Partnerships and Joint Ventures | APUC
Income Statement [Abstract]
Net income (loss)			(153)	(7,449)
Other comprehensive loss			(2,076)	$ (67,352)
Investments in Significant Partnerships and Joint Ventures
Equity Method Investment, Summarized Financial Information [Abstract]
Net assets	1,227,239		1,227,239		1,233,053
Investments in Significant Partnerships and Joint Ventures | APUC
Equity Method Investment, Summarized Financial Information [Abstract]
AQN's ownership interest in the entities	331,600		331,600		332,663
Difference between investment carrying amount and underlying equity in net assets	56,916		56,916		49,139
AQN's investment carrying amount for the entities	$ 388,516		$ 388,516		$ 381,802

Long-term investments - Combine

Long-term investments - Combined Information for APUC's interest in VIE's (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Carrying amount	$ 121,176	$ 122,752
Development loans receivable	91,044	52,923
Performance guarantees and other commitments on behalf of VIEs	674,874	658,224
APUC's maximum exposure in regard to VIE's	$ 887,094	$ 833,899

Long-term debt - Schedule of Lo

Long-term debt - Schedule of Long-term Debt (Detail)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 CAD ($)	Jun. 30, 2023 CLP ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 8,083,147,000			$ 7,512,017,000
Less: current portion	(513,803,000)			(423,274,000)
Long-term debt, excluding current portion	7,569,344,000			7,088,743,000
Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,663,373,000			1,656,451,000
Senior Unsecured Notes | U.S. Dollar Senior Unsecured Notes (Green Equity Units)
Debt Instrument [Line Items]
Weighted average coupon	1.18%	1.18%	1.18%
Par value	$ 1,150,000,000
Long-term debt	$ 1,143,856,000			1,142,814,000
Senior Unsecured Notes | Senior unsecured notes
Debt Instrument [Line Items]
Weighted average coupon	3.38%	3.38%	3.38%
Par value	$ 1,490,000,000
Long-term debt	$ 1,481,682,000			1,496,101,000
Senior Unsecured Notes | Senior unsecured utility notes
Debt Instrument [Line Items]
Weighted average coupon	6.34%	6.34%	6.34%
Par value	$ 142,000,000
Long-term debt	$ 153,435,000			154,271,000
Senior Unsecured Notes | Senior secured utility bonds
Debt Instrument [Line Items]
Weighted average coupon	4.71%	4.71%	4.71%
Par value	$ 556,203,000
Long-term debt	$ 552,479,000			554,822,000
Senior Unsecured Notes | Canadian dollar Senior unsecured notes
Debt Instrument [Line Items]
Weighted average coupon	3.68%	3.68%	3.68%
Par value		$ 1,200,000,000
Long-term debt	$ 903,360,000			882,899,000
Senior Unsecured Notes | Senior secured project notes
Debt Instrument [Line Items]
Weighted average coupon	10.21%	10.21%	10.21%
Par value		$ 18,512,000
Long-term debt	$ 13,982,000			15,024,000
Senior Unsecured Notes | Senior unsecured utility bonds
Debt Instrument [Line Items]
Weighted average coupon	3.98%	3.98%	3.98%
Par value			$ 1,579,000
Long-term debt	$ 81,532,000			77,206,000
Senior Unsecured Notes | Senior Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	$ 6,419,774,000			5,855,566,000
Senior Unsecured Notes | 5.25%, U.S. Dollar Subordinated Unsecured Notes
Debt Instrument [Line Items]
Weighted average coupon	5.25%	5.25%	5.25%
Par value		$ 400,000,000
Long-term debt	$ 298,033,000			291,238,000
Senior Unsecured Notes | 5.56%, U.S. Dollar Subordinated Unsecured Notes
Debt Instrument [Line Items]
Weighted average coupon	5.56%	5.56%	5.56%
Par value	$ 1,387,500,000
Long-term debt	1,365,340,000			1,365,213,000
Revolving Credit Facility | Senior Unsecured Notes | Senior unsecured revolving credit facilities
Debt Instrument [Line Items]
Long-term debt	801,929,000			351,786,000
Revolving Credit Facility | Senior Unsecured Notes | Senior unsecured bank credit facilities and delayed draw term facility
Debt Instrument [Line Items]
Long-term debt	788,906,000			773,643,000
Revolving Credit Facility | Senior Unsecured Notes | Commercial paper
Debt Instrument [Line Items]
Long-term debt	$ 498,613,000			$ 407,000,000

Long-term debt - Additional Inf

Long-term debt - Additional Information (Detail) - USD ($) $ in Thousands	Jul. 31, 2023	Jun. 30, 2023	Jun. 01, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Short-term debt		$ 760,386
Letters of credit issued		407,900		$ 465,200
Interest on long-term debt		$ 71,703		$ 70,274
Revolving Credit Facility | Senior unsecured revolving credit facilities | Senior Unsecured Notes
Debt Instrument [Line Items]
Uncommitted bi-lateral credit facility			$ 50,000
Subsequent Event
Debt Instrument [Line Items]
Debt repaid upon maturity	$ 75,000

Long-term debt - Bank Credit Fa

Long-term debt - Bank Credit Facilities Available to AQN and its Operating Groups (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Revolving and term credit facilities	$ 4,564,000	$ 4,513,300
Funds drawn on facilities/ commercial paper issued	(2,089,600)	(1,532,493)
Letters of credit issued	(407,900)	(465,200)
Liquidity available under the facilities	2,066,500	2,515,607
Undrawn portion of uncommitted letter of credit facilities	(307,600)	(226,900)
Cash on hand	100,258	57,623
Total liquidity and capital reserves	$ 1,859,158	$ 2,346,330

Long-term debt - Schedule of In

Long-term debt - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Disclosure [Abstract]
Long-term debt	$ 65,046	$ 65,746	$ 128,814	$ 127,832
Commercial paper, credit facility draws and related fees	27,714	5,466	52,139	9,051
Accretion of fair value adjustments	(824)	(4,471)	(4,223)	(9,014)
Capitalized interest and AFUDC capitalized on regulated property	(4,420)	(906)	(8,304)	(2,136)
Other	2,147	(1,262)	3,155	(3,217)
Interest expense	$ 89,663	$ 64,573	$ 171,581	$ 122,516

Pension and other post-employ_3

Pension and other post-employment benefits - Components of Net Benefit Costs for Pension Plans and OPEB Recorded as Part of Administrative Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Non-service costs
Non-service costs	$ 5,306	$ 2,258	$ 10,267	$ 4,836
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	3,166	4,532	6,093	8,388
Non-service costs
Interest cost	7,906	6,778	16,299	12,841
Expected return on plan assets	(7,947)	(10,519)	(16,263)	(20,843)
Amortization of net actuarial losses (gains)	(71)	1,257	(195)	2,046
Amortization of prior service credits	(373)	(389)	(746)	(792)
Impact of regulatory accounts	4,588	4,664	8,683	11,002
Non-service costs	4,103	1,791	7,778	4,254
Net benefit cost	7,269	6,323	13,871	12,642
OPEB
Defined Benefit Plan Disclosure [Line Items]
Service cost	902	1,554	1,891	3,109
Non-service costs
Interest cost	2,891	2,282	6,329	4,641
Expected return on plan assets	(2,331)	(2,841)	(5,077)	(5,682)
Amortization of net actuarial losses (gains)	(561)	(86)	(1,122)	(172)
Amortization of prior service credits	(213)	6	(426)	12
Impact of regulatory accounts	1,417	1,106	2,785	1,783
Non-service costs	1,203	467	2,489	582
Net benefit cost	$ 2,105	$ 2,021	$ 4,380	$ 3,691

Other long-term liabilities - S

Other long-term liabilities - Schedule of Long-Term Liabilities and Deferred Credits (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Transactions with Third Party [Line Items]
Contract adjustment payments	$ 78,056	$ 113,876
Asset retirement obligations	113,678	116,584
Advances in aid of construction	90,096	88,546
Environmental remediation obligation	41,092	42,457
Customer deposits	35,360	34,675
Unamortized investment tax credits	17,419	17,649
Deferred credits and contingent consideration	45,937	39,498
Preferred shares, Series C	12,067	12,072
Hook-up fees	25,813	32,463
Lease liabilities	21,415	21,834
Contingent development support obligations	9,129	8,824
Other	34,004	41,156
Other long-term liabilities	549,874	595,442
Less: current portion	(119,495)	(134,212)
Other long-term liabilities, excluding current	430,379	461,230
Related Party
Transactions with Third Party [Line Items]
Note payable to related party	$ 25,808	$ 25,808

Other Liabilities - Additional

Other Liabilities - Additional Information (Detail) - Preferred shares, Series C - Subsequent Event $ in Thousands	Aug. 09, 2023 CAD ($) shares
Debt Instrument [Line Items]
Redemption amount | $	$ 6,906
Redeemed amount (in shares) | shares	36

Shareholders' capital - Common

Shareholders' capital - Common Shares (Detail) - shares	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Common Shares Rollforward
Beginning balance (in shares)	683,614,803	671,960,276
Dividend reinvestment plan (in shares)	4,370,289	3,014,264
Exercise of share-based awards (in shares)	772,591	673,852
Conversion of convertible debentures (in shares)	1,415	754
Ending balance (in shares)	688,759,098	675,649,146

Shareholders' capital - Additio

Shareholders' capital - Additional Information (Detail)			3 Months Ended		6 Months Ended			54 Months Ended
	Mar. 03, 2022	Mar. 02, 2022	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) shares	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($)	Aug. 10, 2023 USD ($) $ / shares shares	Aug. 15, 2022 USD ($)
Stockholders Equity Note [Line Items]
Total share-based compensation | $			$ 3,199,000	$ 3,860,000	$ 3,895,000		$ 3,495,000
Unrecognized compensation costs, non-vested awards | $			$ 39,515,000		$ 39,515,000	$ 39,515,000
Unrecognized compensation costs, non-vested options, period of recognition					2 years 3 months 7 days
Performance and restricted share units
Stockholders Equity Note [Line Items]
Equity other than options granted in period (in shares)					2,349,180
Bonus Deferral Restricted Stock Units
Stockholders Equity Note [Line Items]
Awards vested (percent)					100%
Awards outstanding (in shares)			23,678		23,678	23,678
Granted (in shares)					72,155
Deferred Share Units
Stockholders Equity Note [Line Items]
Exercise of share-based awards settled (in shares)					85,637
Executive
Stockholders Equity Note [Line Items]
Options granted (in shares)					1,368,744
Granted (in USD per share) | $ / shares						$ 10.76
Options expiration period					8 years
Executive | Options vesting December 31, 2023
Stockholders Equity Note [Line Items]
Awards vested (percent)					33.33%
Executive | Options vesting December 31, 2024
Stockholders Equity Note [Line Items]
Awards vested (percent)					33.33%
Executive | Options vesting December 31, 2025
Stockholders Equity Note [Line Items]
Awards vested (percent)					33.33%
Common shares
Stockholders Equity Note [Line Items]
Discount rate on share purchases under dividend reinvestment plan (percent)	3%	5%
Dividend reinvestment plan shares issued (in shares)					4,370,289,000
Equity other than options settled at cash value for payment of the exercise price and for tax withholdings (in shares)					28,701
Common shares | Public Stock Offering
Stockholders Equity Note [Line Items]
Number of shares issued pursuant to public offering (in shares)					661,570
Share based awards settled for cash value as payment for tax withholding (in shares)					330,532
Treasury Stock, Common
Stockholders Equity Note [Line Items]
Shares issued from treasury to settles RSUs and PSUs (in shares)					331,038
Treasury Stock, Common | Bonus Deferral Restricted Stock Units
Stockholders Equity Note [Line Items]
Shares issued from treasury to settles RSUs and PSUs (in shares)					52,379
ATM Equity Program
Stockholders Equity Note [Line Items]
Treasury stock, amount reserved for issuance under the plan | $									$ 500,000,000
ATM Equity Program | Subsequent Event
Stockholders Equity Note [Line Items]
Number of shares issued pursuant to public offering (in shares)								36,814,536
Sale of stock, average price per share (in USD) | $ / shares								$ 15
Cash proceeds from issuance of shares | $								$ 551,086,000
Proceeds from sale of stock, net of commissions | $								544,295,000
Sale of stock, other related costs | $								$ 4,843,000

Shareholders' capital - Fair Va

Shareholders' capital - Fair Value of Share Options Granted (Detail)	6 Months Ended
	Jun. 30, 2023 $ / shares
Equity [Abstract]
Risk-free interest rate	3.40%
Expected volatility	27%
Expected dividend yield	8.60%
Expected life	5 years 6 months
Weighted average grant date fair value per option (in USD per share)	$ 1.04

Accumulated other comprehensi_3

Accumulated other comprehensive income (loss) - Schedule of Accumulated Other Comprehensive Income (loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ 7,055,820	$ 7,274,807	$ 6,836,439	$ 7,382,079	$ 7,382,079
OCI			68,778		(123,129)
Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations			(240)		33,093
OCI, net of tax	35,728	(61,412)	68,538	(112,446)	(90,036)
OCI attributable to the non-controlling interests			(212)		1,650
Net current period OCI attributable to shareholders of AQN			68,326		(88,386)
Ending Balance	6,835,466	7,031,067	6,835,466	7,031,067	6,836,439
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(127,068)	(123,398)	(160,063)	(71,677)	(71,677)
OCI, net of tax	35,331	(59,972)	68,326	(111,693)
Ending Balance	(91,737)	$ (183,370)	(91,737)	(183,370)	(160,063)
Foreign currency cumulative translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			(98,467)	(76,615)	(76,615)
OCI			16,343		(18,013)
Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations			(788)		(5,489)
OCI, net of tax			15,555		(23,502)
OCI attributable to the non-controlling interests			(212)		1,650
Net current period OCI attributable to shareholders of AQN			15,343		(21,852)
Ending Balance	(83,124)		(83,124)		(98,467)
Unrealized gain (loss) on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			(97,809)	(3,514)	(3,514)
OCI			52,435		(128,838)
Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations			1,851		34,543
OCI, net of tax			54,286		(94,295)
OCI attributable to the non-controlling interests			0		0
Net current period OCI attributable to shareholders of AQN			54,286		(94,295)
Ending Balance	(43,523)		(43,523)		(97,809)
Pension and post-employment actuarial changes
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			36,213	$ 8,452	8,452
OCI			0		23,722
Amounts reclassified from AOCI to the unaudited interim consolidated statements of operations			(1,303)		4,039
OCI, net of tax			(1,303)		27,761
OCI attributable to the non-controlling interests			0		0
Net current period OCI attributable to shareholders of AQN			(1,303)		27,761
Ending Balance	$ 34,910		$ 34,910		$ 36,213

Dividends (Detail)

Dividends (Detail) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2023 CAD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2022 CAD ($) $ / shares	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2023 CAD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2022 CAD ($) $ / shares
Dividends [Line Items]
Dividend declared for common share holders | $	$ 75,379		$ 122,636		$ 150,765		$ 238,209
Cash dividend declared per common share (USD per share) | $ / shares	$ 0.1085		$ 0.1808		$ 0.2170		$ 0.3514
Series A preferred shares
Dividends [Line Items]
Dividends declared for preferred share holders | $		$ 1,549		$ 1,549		$ 3,097		$ 3,097
Dividend declared per preferred share (CAD per share) | $ / shares		$ 0.3226		$ 0.3226		$ 0.6453		$ 0.6453
Series D preferred shares
Dividends [Line Items]
Dividends declared for preferred share holders | $		$ 1,273		$ 1,273		$ 2,546		$ 2,546
Dividend declared per preferred share (CAD per share) | $ / shares		$ 0.3182		$ 0.3182		$ 0.6364		$ 0.6364

Related party transactions (Det

Related party transactions (Detail) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 05, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2021 USD ($)	May 31, 2019 USD ($)	May 31, 2019 CAD ($)
Transactions with Third Party [Line Items]
Collateral shortfall trigger, as percent of market value of shares (percent)		50%		50%
Non-controlling interests		$ 1,650,063,000		$ 1,650,063,000		$ 1,616,792,000
AQN's investment carrying amount for the entities		388,516,000		388,516,000		$ 381,802,000
AY Holdco
Transactions with Third Party [Line Items]
AQN's investment carrying amount for the entities							$ 39,376,000
Equity Method Investee
Transactions with Third Party [Line Items]
Reimbursement of incurred costs		12,773,000	$ 26,547,000	42,074,000	$ 33,960,000
Equity Method Investee | Liberty Development JV Inc
Transactions with Third Party [Line Items]
Development fees		0	0	0	0
Equity Method Investee | Liberty Development JV Inc | Subsequent Event
Transactions with Third Party [Line Items]
Noninterest bearing loan	$ 35,000,000
Equity Method Investee | Liberty Development Energy Solutions
Transactions with Third Party [Line Items]
Net earnings attributable to NCI		6,348,000	3,086,000	12,399,000	5,661,000
Distribution to redeemable non-controlling interest		6,302,000	2,820,000	12,300,000	5,404,000
Equity Method Investee | Liberty Development Energy Solutions | Senior Secured Utility Bonds
Transactions with Third Party [Line Items]
Line of credit facility, maximum borrowing capacity		306,500,000		306,500,000
Joint Venture | Liberty Development JV Inc | Subsequent Event
Transactions with Third Party [Line Items]
Proceeds from equity	$ 17,500,000
Related Party
Transactions with Third Party [Line Items]
Distribution from interest in noncontrolling interest		$ 4,921,000	$ 5,534,000	$ 10,979,000	$ 12,956,000
Related Party | Atlantica Yield Energy Solutions Canada Inc. (b)
Transactions with Third Party [Line Items]
Non-controlling interests								$ 96,752,000	$ 130,103

Non-controlling interests and_3

Non-controlling interests and redeemable non-controlling interests - Net Loss Attributable to Non-Controlling Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Noncontrolling Interest [Line Items]
Net earnings attributable to NCI	$ 15,439	$ 32,021	$ 42,018	$ 72,963
Redeemable non-controlling interest, held by related party	(6,349)	(3,086)	(12,399)	(5,661)
Net effect of non-controlling interests	9,090	28,935	29,619	67,302
Tax Equity Partnership Units
Noncontrolling Interest [Line Items]
Net earnings attributable to NCI	25,172	31,100	59,743	71,961
Redeemable Tax Equity Partnership Units
Noncontrolling Interest [Line Items]
Net earnings attributable to NCI	331	1,337	662	2,936
Non-controlling interests
Noncontrolling Interest [Line Items]
Net earnings attributable to NCI	$ (10,064)	$ (416)	$ (18,387)	$ (1,934)

Income taxes - Additional Infor

Income taxes - Additional Information (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Canadian enacted statutory rate (percent)	26.50%	26.50%

Income taxes - Provision for In

Income taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Expected income tax recovery at Canadian statutory rate	$ (84,596)	$ (22,562)	$ (11,903)	$ (6,119)
Increase (decrease) resulting from:
Effect of differences in tax rates on transactions in and within foreign jurisdictions and change in tax rates	(5,560)	(6,562)	(16,718)	(19,039)
Adjustments from investments carried at fair value	40,357	17,216	11,092	18,229
Change in valuation allowance	676	(1,582)	(791)	(1,731)
Non-controlling interests share of income	2,201	4,587	12,393	15,640
Acquisition-related state deferred tax adjustments	0	0	0	7,600
Tax credits	(8,095)	(11,992)	(20,505)	(22,023)
Amortization and settlement of excess deferred income tax	(2,456)	(2,296)	(6,207)	(6,329)
Other	1,515	372	1,382	405
Income tax recovery	$ (55,958)	$ (22,819)	$ (31,257)	$ (13,367)

Income taxes - Summary of Valua

Income taxes - Summary of Valuation Allowance for Deferred Tax Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Deferred Tax Assets, Valuation Allowance [Roll Forward]
Beginning balance	$ 97,396	$ 28,959	$ 107,583	$ 27,470
Charged to income tax recovery	676	(1,582)	(791)	(1,731)
Charged (reduction) to OCI	(6,418)	2,664	(15,138)	4,302
Reductions to other accounts	0	(211)	0	(211)
Ending balance	$ 91,654	$ 29,830	$ 91,654	$ 29,830

Other net losses - Other Net Lo

Other net losses - Other Net Losses (Gains) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Other Income and Expenses [Abstract]
Acquisition and transition-related costs	$ 0	$ 2,315	$ 0	$ 3,940
Kentucky termination costs	43,808	3,535	46,527	4,075
Acquisition-related settlement payment	(11,983)	0	(11,983)	0
Other	8,542	2,802	9,285	5,367
Other losses	$ 40,367	$ 8,652	$ 43,829	$ 13,382

Other net losses - Additional I

Other net losses - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Other Income and Expenses [Abstract]
Kentucky termination costs	$ 38,795
Acquisition-related settlement payment	12,814
Legal fees	$ 831

Basic and diluted net earning_3

Basic and diluted net earnings (loss) per share - Schedule of Earnings per Share (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Class of Stock [Line Items]
Net earnings (loss) attributable to shareholders of AQN	$ (253,231)	$ (33,387)	$ 16,908	$ 57,578
Series A and D Preferred shares dividend	2,080	2,220	4,172	4,440
Net earnings (loss) attributable to common shareholders of AQN – basic (in shares)	(255,311)	(35,607)	12,736	53,138
Net earnings (loss) attributable to common shareholders of AQN – diluted (in shares)	$ (255,311)	$ (35,607)	$ 12,736	$ 53,138
Weighted average number of shares
Basic (in shares)	687,847,010	674,742,897	688,277,615	674,720,319
Effect of dilutive securities (in shares)	0	0	2,127,104	3,046,590
Diluted (in shares)	687,847,010	674,742,897	690,404,719	677,766,909
Series A preferred shares
Class of Stock [Line Items]
Series A and D Preferred shares dividend	$ 1,142	$ 1,219	$ 2,290	$ 2,437
Series D preferred shares
Class of Stock [Line Items]
Series A and D Preferred shares dividend	$ 938	$ 1,001	$ 1,882	$ 2,003

Basic and diluted net earning_4

Basic and diluted net earnings (loss) per share - Additional Information (Detail) - shares	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Options and Convertible Debentures
Class of Stock [Line Items]
Anti-dilutive convertible debentures (in shares)	6,350,530	1,134,711

Segmented information - Additio

Segmented information - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2023 business_unit segment
Segment Reporting [Abstract]
Number of business units | business_unit	2
Number of reportable segments | segment	2

Segmented information - Results

Segmented information - Results of Operations and Assets for Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Revenue
Revenue	$ 603,927	$ 599,236	$ 1,356,804	$ 1,307,755
Other revenue	627,871	619,385	1,406,498	1,352,622
Fuel, power and water purchased	142,156	168,902	417,112	416,413
Net revenue	485,715	450,483	989,386	936,209
Operating expenses (recovery)	241,482	206,330	461,769	418,332
Administrative expenses	25,692	20,107	43,525	37,559
Depreciation and amortization	118,448	112,547	240,089	232,511
Loss on foreign exchange	6,379	4,464	7,815	4,726
Operating income (loss), before gain on sale of renewable assets				243,081
Gain on sale of renewable assets	0	0	0	1,200
Operating income	93,714	107,035	236,188	244,281
Interest expense	(89,663)	(64,573)	(171,581)	(122,516)
Income (loss) from long-term investments	(277,696)	(113,380)	(57,684)	(124,069)
Other expenses	(44,634)	(14,223)	(50,891)	(20,787)
Loss before income taxes	(318,279)	(85,141)	(43,968)	(23,091)
Property, plant and equipment	12,336,931		12,336,931		$ 11,944,885
Investments carried at fair value	1,213,718		1,213,718		1,344,207
Equity-method investees	388,516		388,516		381,802
Total assets	17,968,713		17,968,713		17,627,613
Capital expenditures	245,209	247,538	414,958	575,237
Revenue related to net hedging loss, not recognized as revenue from contract with customers	4,328	25,062		29,892
Revenue related to net hedging gain, not recognized as revenue from contract with customers			11,527
Revenue related to alternative revenue programs, not recognized as revenue from contract with customers	9,083	8,811	12,789	15,089
Other revenue
Revenue
Other revenue	23,944	20,149	49,694	44,867
Corporate
Revenue
Revenue	0	0	0	0
Fuel, power and water purchased	0	0	0	0
Net revenue	364	382	725	768
Operating expenses (recovery)	(146)	19	7	22
Administrative expenses	1,100	631	3,178	2,468
Depreciation and amortization	403	262	642	526
Loss on foreign exchange	6,379	4,464	7,815	4,726
Operating income (loss), before gain on sale of renewable assets				(6,974)
Gain on sale of renewable assets				0
Operating income	(7,372)	(4,994)	(10,917)	(6,974)
Interest expense	(30,519)	(25,851)	(59,064)	(46,655)
Income (loss) from long-term investments	(313,287)	(145,320)	(136,870)	(188,144)
Other expenses	(2,427)	(6,602)	(4,435)	(8,023)
Loss before income taxes	(353,605)	(182,767)	(211,286)	(249,796)
Property, plant and equipment	29,316		29,316		29,260
Investments carried at fair value	0		0		0
Equity-method investees	8,789		8,789		15,500
Total assets	319,237		319,237		266,105
Capital expenditures	0	0	0	0
Corporate | Other revenue
Revenue
Other revenue	364	382	725	768
Regulated Services Group | Operating Segments
Revenue
Revenue	532,233	507,095	1,206,394	1,129,854
Fuel, power and water purchased	138,374	159,256	405,524	393,828
Net revenue	408,059	360,398	829,088	763,573
Operating expenses (recovery)	213,891	179,258	401,315	363,667
Administrative expenses	13,548	10,966	21,873	19,036
Depreciation and amortization	84,754	76,228	170,611	156,511
Loss on foreign exchange	0	0	0	0
Operating income (loss), before gain on sale of renewable assets				224,359
Gain on sale of renewable assets				0
Operating income	95,866	93,946	235,289	224,359
Interest expense	(42,724)	(23,860)	(81,202)	(45,286)
Income (loss) from long-term investments	9,332	5,265	19,660	9,774
Other expenses	(41,010)	(2,898)	(45,259)	(7,786)
Loss before income taxes	21,464	72,453	128,488	181,061
Property, plant and equipment	8,757,413		8,757,413		8,554,938
Investments carried at fair value	1,799		1,799		1,984
Equity-method investees	57,586		57,586		56,199
Total assets	12,247,694		12,247,694		12,109,575
Capital expenditures	225,505	179,878	372,886	435,463
Regulated Services Group | Operating Segments | Other revenue
Revenue
Other revenue	14,200	12,559	28,218	27,547
Renewable Energy Group | Operating Segments
Revenue
Revenue	71,694	92,141	150,410	177,901
Fuel, power and water purchased	3,782	9,646	11,588	22,585
Net revenue	77,292	89,703	159,573	171,868
Operating expenses (recovery)	27,737	27,053	60,447	54,643
Administrative expenses	11,044	8,510	18,474	16,055
Depreciation and amortization	33,291	36,057	68,836	75,474
Loss on foreign exchange	0	0	0	0
Operating income (loss), before gain on sale of renewable assets				25,696
Gain on sale of renewable assets				1,200
Operating income	5,220	18,083	11,816	26,896
Interest expense	(16,420)	(14,862)	(31,315)	(30,575)
Income (loss) from long-term investments	26,259	26,675	59,526	54,301
Other expenses	(1,197)	(4,723)	(1,197)	(4,978)
Loss before income taxes	13,862	25,173	38,830	45,644
Property, plant and equipment	3,550,202		3,550,202		3,360,687
Investments carried at fair value	1,211,919		1,211,919		1,342,223
Equity-method investees	322,141		322,141		310,103
Total assets	5,401,782		5,401,782		$ 5,251,933
Capital expenditures	19,704	67,660	42,072	139,774
Renewable Energy Group | Operating Segments | Other revenue
Revenue
Other revenue	$ 9,380	$ 7,208	$ 20,751	$ 16,552

Segmented information - Informa

Segmented information - Information on Operations by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Revenue	$ 627,871	$ 619,385	$ 1,406,498	$ 1,352,622
United States
Segment Reporting Information [Line Items]
Revenue	503,777	492,373	1,144,201	1,091,246
Canada
Segment Reporting Information [Line Items]
Revenue	37,788	41,397	90,916	95,232
Other regions
Segment Reporting Information [Line Items]
Revenue	$ 86,306	$ 85,615	$ 171,381	$ 166,144

Commitments and contingencies -

Commitments and contingencies - Additional Information (Details)	Jun. 30, 2023 lawsuit claim	Nov. 17, 2020 lawsuit
Commitments Disclosure [Line Items]
Number of non-litigation claims | claim	1
Number of lawsuits filed by groups of individual plaintiffs		12
Number of wrongful death lawsuits	1
Mountain View Fire
Commitments Disclosure [Line Items]
Number of active lawsuits	17
Number of lawsuits filed by insurance companies		4

Commitments and contingencies_2

Commitments and contingencies - Estimates of Future Commitments (Detail) $ in Thousands	Jun. 30, 2023 USD ($)
Commitments Disclosure [Line Items]
Year 1	$ 281,823
Year 2	215,807
Year 3	153,863
Year 4	113,246
Year 5	110,953
Thereafter	1,093,782
Total	1,969,474
Power purchase
Commitments Disclosure [Line Items]
Year 1	83,606
Year 2	47,603
Year 3	29,461
Year 4	12,397
Year 5	12,643
Thereafter	136,244
Total	321,954
Natural gas supply and service agreements
Commitments Disclosure [Line Items]
Year 1	93,739
Year 2	92,102
Year 3	51,456
Year 4	38,265
Year 5	33,088
Thereafter	171,141
Total	479,791
Service agreements
Commitments Disclosure [Line Items]
Year 1	73,974
Year 2	61,943
Year 3	58,602
Year 4	48,070
Year 5	50,529
Thereafter	285,567
Total	578,685
Capital projects
Commitments Disclosure [Line Items]
Year 1	16,537
Year 2	0
Year 3	0
Year 4	0
Year 5	0
Thereafter	0
Total	16,537
Land easements and others
Commitments Disclosure [Line Items]
Year 1	13,967
Year 2	14,159
Year 3	14,344
Year 4	14,514
Year 5	14,693
Thereafter	500,830
Total	$ 572,507

Non-cash operating items - Chan

Non-cash operating items - Changes in Non-Cash Operating Items (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disclosure Changes In Non Cash Operating Items [Abstract]
Accounts receivable	$ 21,450	$ (8,641)	$ 35,213	$ (49,253)
Fuel and natural gas in storage	(12,837)	(23,362)	19,657	(7,128)
Supplies and consumables inventory	(11,678)	(3,006)	(22,454)	(10,775)
Income taxes recoverable	5,134	(861)	5,683	2,071
Prepaid expenses	13,231	(5,203)	6,183	(12,553)
Accounts payable	71,253	48,424	18,033	26,759
Accrued liabilities	38,215	(22,585)	(88,895)	30,711
Current income tax liability	(1,039)	(1,350)	2,563	853
Asset retirements and environmental obligations	363	(10,855)	(706)	(11,354)
Net regulatory assets and liabilities	(11,712)	(9,201)	(28,633)	(54,119)
Changes in non-cash operating items	$ 112,380	$ (36,640)	$ (53,356)	$ (84,788)

Financial instruments - Fair Va

Financial instruments - Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Level 1
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	$ 1,149,505	$ 1,270,138
Development loans and other receivables	0	0
Total derivative instruments	0	0
Total financial assets	1,149,505	1,270,138
Long-term debt	2,716,700	2,623,628
Convertible debentures	285	276
Total derivative instruments	0	0
Total financial liabilities	2,716,985	2,623,904
Level 1 | Related Party
Fair Value of Financial Instruments [Line Items]
Note payable to related party	0	0
Level 1 | Commodity contracts
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 1 | Commodity contracts | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Total derivative instruments		0
Level 1 | Commodity contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 1 | Interest rate swaps | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0	0
Level 1 | Interest rate swaps | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 1 | Congestion revenue rights | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 1 | Congestion revenue rights | Not designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 1 | Energy contracts | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 1 | Energy contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 1 | Energy contracts | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Total derivative instruments	0	0
Level 1 | Cross-currency interest rate contract | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Total derivative instruments		0
Level 1 | Cross-currency interest rate contract | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 1 | Cross-currency interest rate contract | Designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Total derivative instruments	0	0
Level 1 | Cross-currency interest rate contract | Not designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 1 | Preferred shares, Series C
Fair Value of Financial Instruments [Line Items]
Preferred shares, Series C	0	0
Level 2
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	0	0
Development loans and other receivables	91,547	50,300
Total derivative instruments	69,804	73,397
Total financial assets	161,351	123,697
Long-term debt	4,811,721	4,075,403
Convertible debentures	0	0
Total derivative instruments	26,727	41,420
Total financial liabilities	4,865,579	4,143,678
Level 2 | Related Party
Fair Value of Financial Instruments [Line Items]
Note payable to related party	15,188	15,180
Level 2 | Commodity contracts
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		283
Level 2 | Commodity contracts | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	139
Total derivative instruments		1,614
Level 2 | Commodity contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	1,441
Level 2 | Interest rate swaps | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	65,711	69,188
Level 2 | Interest rate swaps | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	3,490
Level 2 | Congestion revenue rights | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 2 | Congestion revenue rights | Not designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 2 | Energy contracts | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 2 | Energy contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 2 | Energy contracts | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Total derivative instruments	0	0
Level 2 | Cross-currency interest rate contract | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	464
Total derivative instruments		15,435
Level 2 | Cross-currency interest rate contract | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	9,736
Level 2 | Cross-currency interest rate contract | Designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		1,267
Total derivative instruments	15,550	24,371
Level 2 | Cross-currency interest rate contract | Not designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		2,659
Level 2 | Preferred shares, Series C
Fair Value of Financial Instruments [Line Items]
Preferred shares, Series C	11,943	11,675
Level 3
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	64,213	74,083
Development loans and other receivables	0	0
Total derivative instruments	7,757	10,503
Total financial assets	71,970	84,586
Long-term debt	0	0
Convertible debentures	0	0
Total derivative instruments	75,885	128,901
Total financial liabilities	75,885	128,901
Level 3 | Related Party
Fair Value of Financial Instruments [Line Items]
Note payable to related party	0	0
Level 3 | Commodity contracts
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 3 | Commodity contracts | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Total derivative instruments		0
Level 3 | Commodity contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 3 | Interest rate swaps | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0	0
Level 3 | Interest rate swaps | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 3 | Congestion revenue rights | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	7,757
Level 3 | Congestion revenue rights | Not designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		10,110
Level 3 | Energy contracts | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	64,370
Level 3 | Energy contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		120,284
Level 3 | Energy contracts | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		393
Total derivative instruments	11,515	8,617
Level 3 | Cross-currency interest rate contract | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Total derivative instruments		0
Level 3 | Cross-currency interest rate contract | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	0
Level 3 | Cross-currency interest rate contract | Designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Total derivative instruments	0	0
Level 3 | Cross-currency interest rate contract | Not designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		0
Level 3 | Preferred shares, Series C
Fair Value of Financial Instruments [Line Items]
Preferred shares, Series C	0	0
Carrying amount
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	1,213,718	1,344,207
Development loans and other receivables	98,313	53,680
Total derivative instruments	77,561	83,900
Total financial assets	1,389,592	1,481,787
Long-term debt	8,083,147	7,512,017
Convertible debentures	238	245
Total derivative instruments	102,612	170,321
Total financial liabilities	8,223,872	7,720,463
Carrying amount | Related Party
Fair Value of Financial Instruments [Line Items]
Note payable to related party	25,808	25,808
Carrying amount | Commodity contracts
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		283
Carrying amount | Commodity contracts | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	139
Total derivative instruments		1,614
Carrying amount | Commodity contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	1,441
Carrying amount | Interest rate swaps | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	65,711	69,188
Carrying amount | Interest rate swaps | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	3,490
Carrying amount | Congestion revenue rights | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	7,757	10,110
Carrying amount | Energy contracts | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	64,370
Carrying amount | Energy contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		120,284
Carrying amount | Energy contracts | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	11,515	8,617
Carrying amount | Energy contracts | Not designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		393
Carrying amount | Cross-currency interest rate contract | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	464
Total derivative instruments		15,435
Carrying amount | Cross-currency interest rate contract | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	9,736
Carrying amount | Cross-currency interest rate contract | Designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		1,267
Total derivative instruments	15,550	24,371
Carrying amount | Cross-currency interest rate contract | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		2,659
Carrying amount | Preferred shares, Series C
Fair Value of Financial Instruments [Line Items]
Preferred shares, Series C	12,067	12,072
Fair value
Fair Value of Financial Instruments [Line Items]
Long-term investments carried at fair value	1,213,718	1,344,221
Development loans and other receivables	91,547	50,300
Total derivative instruments	77,561	83,900
Total financial assets	1,382,826	1,478,421
Long-term debt	7,528,421	6,699,031
Convertible debentures	285	276
Total derivative instruments	102,612	170,321
Total financial liabilities	7,658,449	6,896,483
Fair value | Related Party
Fair Value of Financial Instruments [Line Items]
Note payable to related party	15,188	15,180
Fair value | Commodity contracts
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		283
Fair value | Commodity contracts | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	139
Total derivative instruments		1,614
Fair value | Commodity contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	1,441
Fair value | Interest rate swaps | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	65,711	69,188
Fair value | Interest rate swaps | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	3,490
Fair value | Congestion revenue rights | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	7,757	10,110
Fair value | Energy contracts | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	64,370
Fair value | Energy contracts | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		120,284
Fair value | Energy contracts | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	11,515	8,617
Fair value | Energy contracts | Not designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		393
Fair value | Cross-currency interest rate contract | Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	464
Total derivative instruments		15,435
Fair value | Cross-currency interest rate contract | Designated as a hedge | Cash flow hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments	9,736
Fair value | Cross-currency interest rate contract | Designated as a hedge | Net investment hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		1,267
Total derivative instruments	15,550	24,371
Fair value | Cross-currency interest rate contract | Not designated as a hedge
Fair Value of Financial Instruments [Line Items]
Total derivative instruments		2,659
Fair value | Preferred shares, Series C
Fair Value of Financial Instruments [Line Items]
Preferred shares, Series C	$ 11,943	$ 11,675

Financial instruments - Additio

Financial instruments - Additional Information (Detail)	1 Months Ended	3 Months Ended			6 Months Ended
	Feb. 28, 2022 CAD ($)	Jun. 30, 2023 USD ($) dth MWh derivative_contract $ / MWh	Jun. 30, 2023 CAD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) dth MWh derivative_contract $ / MWh	Jun. 30, 2023 CAD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 CAD ($) dth MWh derivative_contract	Dec. 31, 2022 USD ($)	Dec. 17, 2022 CAD ($) MWh $ / MWh	Jan. 31, 2022 CAD ($)	May 23, 2019 USD ($)
Derivative [Line Items]
Nonmonetary notional amount | dth		2,755,733			2,755,733			2,755,733
Number of interest rate swap contracts | derivative_contract		2			2			2
Foreign currency gain (loss)		$ 130,000		$ (48,440,000)	$ 15,555,000		$ (40,595,000)
Supplier Financing Programs
Derivative [Line Items]
Accounts payable		63,328,000			63,328,000				$ 16,785,000
Non-regulated Energy Sales
Derivative [Line Items]
Unrealized gains (loss) in AOCI to be reclassified					19,722,000
U.S. dollar Subordinated unsecured notes | Unsecured Debt
Derivative [Line Items]
Par value								$ 300,000,000				$ 350,000,000
Debt repaid upon maturity	$ 200,000,000
Canadian dollar Senior unsecured notes | Unsecured Debt
Derivative [Line Items]
Par value								1,200,000,000
Designated as a hedge | Canadian dollar Senior unsecured notes
Derivative [Line Items]
Amortization of AOCI gains frozen as a result of hedge dedesignation		2,924,000		(2,149,000)	2,801,000		(2,544,000)
Canadian Investments and Subsidiaries
Derivative [Line Items]
Foreign currency gain (loss)		9,629,000		395,000	9,638,000		220,000
Currency Swap
Derivative [Line Items]
Cross-currency interest rate swap											$ 400,000,000
Currency Swap | U.S. dollar Subordinated unsecured notes | Unsecured Debt
Derivative [Line Items]
Par value								$ 400,000,000
Currency Swap | Canadian dollar Senior unsecured notes | Unsecured Debt
Derivative [Line Items]
Foreign currency gain (loss)		(3,967,000)		8,132,000	(4,348,000)		6,080,000
Interest rate swaps designated as a hedge
Derivative [Line Items]
Nonmonetary notional amount | MWh										388,170
Receive average prices (per MW-hr) | $ / MWh										25.15
Derivative notional amount										$ 390,000,000
Interest rate swaps designated as a hedge | U.S. dollar Subordinated unsecured notes
Derivative [Line Items]
Derivative notional amount		350,000,000			350,000,000
Interest rate swaps designated as a hedge | Canadian dollar Senior unsecured notes | Unsecured Debt
Derivative [Line Items]
Foreign currency gain (loss)			$ (4,975,000)	8,439,000		$ (4,987,000)	14,252,000
Foreign exchange contract
Derivative [Line Items]
Foreign currency gain (loss)		$ (6,942,000)		$ 14,929,000	$ (7,009,000)		$ 10,697,000
Transmission congestion rights
Derivative [Line Items]
Nonmonetary notional amount | MWh		919,014			919,014			919,014
Minimum | Atlantica Yield Energy Solutions Canada Inc. | Measurement Input, Discount Rate
Derivative [Line Items]
Alternative investment, measurement input (percent)		0.0781			0.0781			0.0781
Minimum | Atlantica Yield Energy Solutions Canada, Inc | Measurement Input, Price Volatility
Derivative [Line Items]
Alternative investment, measurement input (percent)		0.2699			0.2699			0.2699
Minimum | Energy contracts
Derivative [Line Items]
Forward price | $ / MWh		24.27			24.27
Derivative auction price | $ / MWh		$ 0			$ 0
Minimum | Transmission congestion rights
Derivative [Line Items]
Receive average prices (per MW-hr) | $ / MWh		0.64			0.64
Maximum | Atlantica Yield Energy Solutions Canada Inc. | Measurement Input, Discount Rate
Derivative [Line Items]
Alternative investment, measurement input (percent)		0.0831			0.0831			0.0831
Maximum | Atlantica Yield Energy Solutions Canada, Inc | Measurement Input, Price Volatility
Derivative [Line Items]
Alternative investment, measurement input (percent)		0.3489			0.3489			0.3489
Maximum | Energy contracts
Derivative [Line Items]
Forward price | $ / MWh		73.20			73.20
Derivative auction price | $ / MWh		$ 23.98			$ 23.98
Maximum | Transmission congestion rights
Derivative [Line Items]
Receive average prices (per MW-hr) | $ / MWh		19.06			19.06
Weighted Average | Atlantica Yield Energy Solutions Canada Inc. | Measurement Input, Discount Rate
Derivative [Line Items]
Alternative investment, measurement input (percent)		0.0812			0.0812			0.0812
Weighted Average | Energy contracts
Derivative [Line Items]
Forward price | $ / MWh		35.79			35.79
Derivative auction price | $ / MWh		$ 5.04			$ 5.04
Weighted Average | Transmission congestion rights
Derivative [Line Items]
Receive average prices (per MW-hr) | $ / MWh		5.97			5.97

Financial instruments - Long-te

Financial instruments - Long-term Energy Derivative Contracts (Detail)	Jun. 30, 2023 dth MWh $ / MWh
Derivative [Line Items]
Nonmonetary notional amount | dth	2,755,733
Cash flow hedge | Illinois Hub, Expiry September 2030
Derivative [Line Items]
Nonmonetary notional amount | MWh	3,772,462
Receive average prices (per MW-hr) | $ / MWh	25
Cash flow hedge | PJM Western HUB, Expiry December 2028
Derivative [Line Items]
Nonmonetary notional amount | MWh	404,612
Receive average prices (per MW-hr) | $ / MWh	29
Cash flow hedge | NI HUB, Expiry December 2027
Derivative [Line Items]
Nonmonetary notional amount | MWh	1,707,551
Receive average prices (per MW-hr) | $ / MWh	22
Cash flow hedge | ERCOT North HUB, Expiry December 2027
Derivative [Line Items]
Nonmonetary notional amount | MWh	1,471,065
Receive average prices (per MW-hr) | $ / MWh	36

Financial instruments - Derivat

Financial instruments - Derivative Financial Instruments Designated as Cash Flow Hedge, Effect on Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Effective portion of cash flow hedge	$ 29,949	$ (20,298)	$ 52,435	$ (81,852)
Amortization of cash flow hedge	(1,421)	(3,828)	(4,908)	(3,992)
Amounts reclassified from AOCI	7,893	11,247	6,759	14,079
OCI attributable to shareholders of AQN	$ 36,421	$ (12,879)	$ 54,286	$ (71,765)

Financial instruments - Effects

Financial instruments - Effects on Statement of Operations of Derivative Financial Instruments Not Designated as Hedges (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fair Value of Financial Instruments [Line Items]
Unrealized gain (loss) on derivative financial instruments:	$ 4,882	$ 334	$ 9,851	$ 402
Gain (loss) on derivative instruments	(456)	(6,135)	(646)	(5,884)
Gain (loss) on derivative financial instruments	1,039	(3,313)	3,205	(2,569)
Non-regulated energy sales	(1,495)	(2,822)	(3,851)	(3,315)
Not Designated as Hedging Instrument
Fair Value of Financial Instruments [Line Items]
Unrealized gain (loss) on derivative financial instruments:	84	(7,032)	1,190	(7,783)
Total realized gain (loss) on derivative financial instruments	(1,537)	(157)	(3,830)	149
Loss on derivative financial instruments not accounted for as hedges	(1,453)	(7,189)	(2,640)	(7,634)
Amortization of AOCI gains frozen as a result of hedge dedesignation	997	1,054	1,994	1,750
Not Designated as Hedging Instrument | Interest rate swaps designated as a hedge
Fair Value of Financial Instruments [Line Items]
Unrealized gain (loss) on derivative financial instruments:	0	(4,680)	0	(4,680)
Not Designated as Hedging Instrument | Energy derivative contracts
Fair Value of Financial Instruments [Line Items]
Unrealized gain (loss) on derivative financial instruments:	84	(2,352)	62	(3,103)
Total realized gain (loss) on derivative financial instruments	(1,537)	(157)	(3,830)	149
Not Designated as Hedging Instrument | Commodity contracts
Fair Value of Financial Instruments [Line Items]
Unrealized gain (loss) on derivative financial instruments:	$ 0	$ 0	$ 1,128	$ 0