Change in value of investments carried at fair value
Unrealized Gain (Loss) on Investments
Significant accounting policies
Significant Accounting Policies [Text Block]
Transaction cost on divestiture of operating entity
Transaction Cost On Divestiture Of Operating Entity
Transaction Cost On Divestiture Of Operating Entity
Tax equity investments
Investment, Policy [Policy Text Block]
Commodity contracts for regulatory operations
Commodity contracts
Commodity Contract [Member]
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Disclosure Long Term Investments And Notes Receivable [Abstract]
Disclosure Long Term Investments And Notes Receivable [Abstract]
Disclosure - Long-Term Investments and Notes Receivable [Abstract]
Investment tax credits and tax benefits
Investment Program, Proportional Amortization Method, Applied, Amortization Expense
Income from other long-term investments
Income (Loss) From Other Long-Term Investments
Income (Loss) From Other Long-Term Investments
Income taxes
Taxes [Member]
Taxes [Member]
Rate adjustment mechanism
Rate Adjustment [Member]
Rate Adjustment [Member]
Entity File Number
Entity File Number
Additional paid-in capital
Additional Paid-in Capital [Member]
Valuation Approach and Technique [Domain]
Valuation Approach and Technique [Domain]
Interest rate swaps designated as a hedge
Forward-starting interest rate swap
Interest Rate Swap [Member]
Repayment of long-term debt on disposition of renewable energy business (note 18)
Repayment of Long Term Debt from Disposition of Renewable Energy
Repayment of Long Term Debt from Disposition of Renewable Energy
Equity method gain
Income (Loss) from Equity Method Investments
Income (loss) from long-term investments
Disposal Group, Including Discontinued Operation, Income (Loss) From Long-Term Investments
Disposal Group, Including Discontinued Operation, Income (Loss) From Long-Term Investments
Schedule of Dividends
Dividends Declared [Table Text Block]
Recently issued accounting pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Schedule of Discontinued Operations
Disposal Groups, Including Discontinued Operations [Table Text Block]
Schedule of Long-term Investments
Long Term Investments and Notes Receivable [Table Text Block]
Long Term Investments.
Number of lawsuits filed by groups of plaintiffs
Number of Lawsuits Filed by Groups of Plaintiffs
Number of Lawsuits Filed by Groups of Plaintiffs
Canadian dollar Senior unsecured notes
Canadian Dollar Senior Unsecured Notes [Member]
Canadian Dollar Senior Unsecured Notes [Member]
Measurement Basis [Axis]
Measurement Basis [Axis]
Basic net earnings per share (USD per share)
Earnings Per Share, Basic
Accounts payable, accrued liabilities and other
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Commercial paper
Commercial Paper [Member]
Net effect of non-controlling interest from discontinued operations (note 18)
Add: Net earnings attributable to non-controlling interest included in discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest
Dividend declared per preferred share (USD per share)
Preferred Stock, Dividends Per Share, Declared
Wildfire mitigation and vegetation management
Wildfire Mitigation and Vegetation Management [Member]
Wildfire Mitigation and Vegetation Management
Dividends on preferred shares
Payments of Ordinary Dividends, Preferred Stock and Preference Stock
Funds drawn on facilities/commercial paper issued
Long-Term Commercial Paper, Current
Stock, Class of Stock [Table]
Stock, Class of Stock [Table]
Measurement Input, Discount Rate
Measurement Input, Discount Rate [Member]
OCI, net of tax (note 10)
OCI
Other Comprehensive Income (Loss), Net of Tax
Schedule of Results of Operations and Assets for Segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Short-term debt
Short-Term Debt
Expected recoveries of insurance amount
Estimated Insurance Recoveries
Current
Current Income Tax Expense (Benefit)
Measurement Input Type [Domain]
Measurement Input Type [Domain]
Held for sale assets
Total assets
Total assets held for sale
Disposal Group, Including Discontinued Operation, Assets
Pension benefits
Pension Plan [Member]
Basis of consolidation
Consolidation, Policy [Policy Text Block]
Share-based compensation
Share-Based Payment Arrangement, Noncash Expense
Stockholders Equity Note [Table]
Stockholders Equity Note [Table]
Stockholders Equity Note [Table]
Non-regulated energy sales
Non-Regulated Energy Sales [Member]
Non-regulated Energy Sales [Member]
Deferred capitalized costs
Deferred Capitalized Costs [Member]
Deferred Capitalized Costs [Member]
Foreign currency translation adjustment, net of tax expense
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
Accounts and Financing Receivables [Table]
Accounts and Financing Receivables [Table]
Total equity attributable to shareholders of Algonquin Power & Utilities Corp.
Equity, Attributable to Parent
Other comprehensive income (loss) ("OCI"):
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Public Utilities, Regulatory Proceeding [Domain]
Public Utilities, Regulatory Proceeding [Domain]
Hedging Designation [Domain]
Hedging Designation [Domain]
Fuel, power, water purchased and other cost of sales
Cost of Fuel, Power, Water And Other Purchased
Cost of Fuel, Power, Water And Other Purchased
Long term debt
Disposal Group Including Discontinued Operation Long Term Debt
Disposal Group Including Discontinued Operation Long Term Debt
Current assets:
Assets, Current [Abstract]
Liabilities and equity, total
Liabilities and Equity
Foreign currency translation
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Pension and post-employment actuarial changes
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
LIABILITIES AND EQUITY
Liabilities and Equity [Abstract]
Derivative instruments
Disposal Group Including Discontinued Operation Derivative Instruments Non Current
Disposal Group Including Discontinued Operation Derivative Instruments Non Current
Other revenue
Other Revenue [Member]
Other Revenue [Member]
Cover [Abstract]
Cover [Abstract]
Derecognition on sale of the renewable energy business (note 18)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Disposition of renewable energy business
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Other regions
International, Excluding Canada [Member]
International, Excluding Canada
Regulated electricity
Regulated Electricity [Member]
Regulated Electricity [Member]
U.S. dollar Subordinated unsecured notes
U.S. Dollar Subordinated Unsecured Notes [Member]
U.S. Dollar Subordinated Unsecured Notes [Member]
Equity Method Investment [Table]
Equity Method Investment [Table]
Number of victims who suffered serious physical injuries
Number of Victims Who Suffered Serious Physical Injuries
Number of Victims Who Suffered Serious Physical Injuries
Capital expenditures
Segment, Expenditure, Addition to Long-Lived Assets
Number of tax equity investments accounted for using the proportional amortization method
Number of Tax Equity Investments Accounted for Using the Proportional Amortization Method
Number of Tax Equity Investments Accounted for Using the Proportional Amortization Method
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Public Utility [Axis]
Public Utility [Axis]
Other net losses
Other Nonoperating Expense [Text Block]
Other Nonoperating Expense [Text Block]
Comparative figures
Reclassifications [Text Block]
Accretion of fair value adjustments
Accretion of Fair Value Adjustments
Accretion of Fair Value Adjustments
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Commitments Disclosure [Table]
Commitments Disclosure [Table]
Commitments Disclosure [Table]
Pension and post-employment non-service costs
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Net earnings
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Derivative instruments
Disposal Group Including Discontinued Operation Derivative Instruments Debt
Disposal Group Including Discontinued Operation Derivative Instruments Debt
Accounts payable
Disposal Group, Including Discontinued Operation, Accounts Payable, Current
Amounts reclassified from AOCI to non-controlling interest
AOCI Including Portion Attributable to Noncontrolling Interest, Period Increase (Decrease)
Retirement Benefits [Abstract]
Retirement Benefits [Abstract]
Amortization expense
Depreciation, Depletion and Amortization, Nonproduction
Subsequent events (notes 7(a), 7(b) and 7(c))
Subsequent Events
Subsequent Events
Liabilities associated with assets held for sale (note 18)
Total liabilities associated with assets held for sale, noncurrent
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
Schedule of Information on Operations by Geographic Area
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Other long-term liabilities
Other Liabilities, Noncurrent
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Canadian Investments and Subsidiaries
Canadian Investments and Subsidiaries [Member]
Canadian Investments and Subsidiaries [Member]
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Operating Segments
Operating Segments [Member]
Cost of removal
Cost Of Removal [Member]
Cost Of Removal
Effective portion of cash flow hedge
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Long-term debt (note 7)
Less: current portion
Long-Term Debt, Current Maturities
Comprehensive loss attributable to the non-controlling interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Equity contributions
Equity Method Investment, Equity Contributions
Equity Method Investment, Equity Contributions
Comprehensive income attributable to shareholders of Algonquin Power & Utilities Corp.
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Senior unsecured utility notes
U.S. Dollar Senior Unsecured Utility Notes [Member]
U.S. Dollar Senior Unsecured Utility Notes [Member]
Net revenue
Revenue, Net of Regulated Fuel and Power Purchased
Revenue, Net of Regulated Fuel and Power Purchased
Disposal Group Name [Domain]
Disposal Group Name [Domain]
Deferred
Deferred Income Tax Expense (Benefit), Continuing Operations
Deferred Income Tax Expense (Benefit), Continuing Operations
Earnings (loss) from continuing operations
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Distributions to non-controlling interests
Payments to Noncontrolling Interests
Regulated Operation, Regulatory Liability [Table]
Regulated Operation, Regulatory Liability [Table]
Class of Stock [Line Items]
Class of Stock [Line Items]
Deferred income taxes
Deferred Income Tax Liabilities, Net
Document Fiscal Period Focus
Document Fiscal Period Focus
Net earnings (loss) from discontinued operations attributable to AQN
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Senior Unsecured Notes
Unsecured Debt [Member]
Litigation Case [Domain]
Litigation Case [Domain]
Basic net earnings per share from continuing operations (USD per share)
Income (Loss) from Continuing Operations, Per Basic Share
Number of active lawsuits
Number of Lawsuits
Number of Lawsuits
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Foreign currency cumulative translation
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Billing Status, Type [Axis]
Billing Status, Type [Axis]
Long-term debt
Long-Term Debt
Utility Plant [Domain]
Utility Plant [Domain]
Assets
Assets
Investment, Name [Domain]
Investment, Name [Domain]
Commitments Disclosure [Line Items]
Commitments Disclosure [Line Items]
Commitments Disclosure [Line Items]
Segment, Geographical [Domain]
Geographical [Domain]
Regulatory Liability [Axis]
Regulatory Liability [Axis]
Exercise of share-based awards (in shares)
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture
Entity Address, City or Town
Entity Address, City or Town
Asset retirement obligation
Asset Retirement Obligation Costs [Member]
Operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Non-controlling interests - tax equity partnership units
Stockholders' Equity Attributable to Noncontrolling Interest, Third Party
Stockholders' Equity Attributable to Noncontrolling Interest, Third Party
Effect of exchange rate differences on cash and restricted cash
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Derecognition on sale of the renewable energy business
Noncontrolling Interest, Decrease from Deconsolidation
Increase in other assets
Payments to Acquire Other Assets. Investing Activities
Payments to Acquire Other Assets, Investing Activities
Restructuring costs
Restructuring Costs
Regulatory Agency [Axis]
Regulatory Agency [Axis]
Cash dividend declared per common share (USD per share)
Common Stock, Dividends, Per Share, Declared
Repayments of senior unsecured revolving credit facility
Repayments of Lines of Credit
Level 2
Fair Value, Inputs, Level 2 [Member]
Equity method investment carrying value
Equity-method investees
Equity Method Investments
Number of wrongful death lawsuits
Number of Wrongful Death Lawsuits
Number of Wrongful Death Lawsuits
Business Combination [Domain]
Business Combination [Domain]
Cash received during the period for distributions from equity investments
Distributions from Equity Investments Received
Distributions from Equity Investments Received
Entity Common Stock, Shares Outstanding
Beginning balance (in shares)
Ending balance (in shares)
Common Stock, Shares, Outstanding
Discontinued operations
Discontinued Operations, Policy [Policy Text Block]
Number of retained tax equity investments in renewable energy projects
Number of Retained Tax Equity Investments in Renewable Energy Project
Number of Retained Tax Equity Investments in Renewable Energy Project
Stockholders Equity Note [Line Items]
Stockholders Equity Note [Line Items]
Stockholders Equity Note [Line Items]
Senior unsecured bank credit facilities and delayed draw term facility
Senior Unsecured Bank Credit Facilities And Delayed Draw Term Facility [Member]
Senior Unsecured Bank Credit Facilities And Delayed Draw Term Facility
Schedule of Number of Common Shares
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]
Accrued interest
Debt Instrument, Increase, Accrued Interest
Non-cash operating items
Disclosure Of Other Significant Noncash Transactions [Text Block]
Disclosure of Other Significant Noncash Transactions.
Depreciation and amortization
Depreciation and Amortization of Other Expense
Depreciation and Amortization of Other Expense
Commercial paper, credit facility draws and related fees
Interest Expense, Commercial Paper
Senior unsecured utility bonds
Chilean Senior Unsecured Utility Notes [Member]
Chilean Senior Unsecured Utility Notes
Supplies and consumables inventory
Increase (Decrease) in Materials and Supplies
United States
UNITED STATES
Change in valuation allowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Senior unsecured notes (Green Equity Units)
U.S. Dollar Senior Unsecured Notes (Green Equity Units) [Member]
U.S. Dollar Senior Unsecured Notes (Green Equity Units)
Equity method investments amortization expenses
Equity Method Investments, Amortization Expenses
Equity Method Investments, Amortization Expenses
Deficit
Retained Earnings [Member]
Regulatory matters
Regulatory Matters [Text Block]
Regulatory Matters.
Diluted net earnings (loss) per share from discontinued operations (USD per share)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share
Rio Rico Water & Sewer, Bella Vista Water, Beardsley Water, Cordes Lakes Water
Rio Rico Water & Sewer, Bella Vista Water, Beardsley Water, Cordes Lakes Water [Member]
Rio Rico Water & Sewer, Bella Vista Water, Beardsley Water, Cordes Lakes Water
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Cash, cash equivalents and restricted cash, beginning of period
Cash, cash equivalents and restricted cash, end of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Income Statement [Abstract]
Income Statement [Abstract]
Total derivative instruments
Derivative Asset
Income tax expense
Total
Income tax recovery (expense)
Income Tax Expense (Benefit)
Change in fair value of cash flow hedges, net of tax (recovery) and expense
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax
Derivative instruments (note 17)
Derivative Liability, Noncurrent
Intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Designated as a hedge
Designated as Hedging Instrument [Member]
Schedule of Regulatory Assets and Liabilities
Schedule Of Regulatory Assets And Liabilities [Table Text Block]
Schedule of Regulatory Assets and Liabilities.
Product and Service [Domain]
Product and Service [Domain]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Change in fair value of cash flow hedges, net of tax recovery of $0.4 and $0.5 (2024 - tax expense of $2.2 and $7.0) (note 17(b)(ii))
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Amortization and settlement of excess deferred income tax
Effective Income Tax Rate Reconciliation, Settlement and Amortization of Excess Deferred Income Tax
Effective Income Tax Rate Reconciliation, Settlement and Amortization of Excess Deferred Income Tax
Diluted net earnings per share from continuing operations (USD per share)
Income (Loss) from Continuing Operations, Per Diluted Share
Increase in long-term investments
Payments to Acquire Long-Term Investments
Net earnings
Net earnings
Net earnings (loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
subordinated unsecured notes
$350,000 Subordinated Unsecured Notes [Member]
$350,000 Subordinated Unsecured Notes
Total financial liabilities
Liabilities, Fair Value Disclosure
Distributions received from equity investments, net of income
Proceeds from Equity Method Investment, Distribution, Net
Proceeds from Equity Method Investment, Distribution, Net
Notional quantity
Derivative, Notional Amount
Discontinued Operations and Disposal Groups [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Retired generating plant
Retired Generating Plant [Member]
Retired Generating Plant [Member]
Other Income and Expenses [Abstract]
Other Income and Expenses [Abstract]
Current income tax liability
Increase (Decrease) in Income Taxes
Business acquisitions and dispositions
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
Pension and post-employment benefits
Pension and Other Postretirement Plans Costs [Member]
Accrued liabilities
Accrued Liabilities, Current
Series A Shares and Series D Shares dividend (note 9)
Series A and D Preferred shares dividend
Preferred Stock Dividends, Income Statement Impact
Renewable Energy
Renewable Energy Program [Member]
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Requested rate increase (decrease), amount
Public Utilities, Requested Rate Increase (Decrease), Amount
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Investing activities
Cash Provided by (Used in) Investing Activity, Discontinued Operation
Schedule of Derivative Instruments Designated as Amortized into Hedged Activity Disclosure
Derivative Instruments Designated as Amortized into Hedged Activity Disclosure [Table Text Block]
Derivative Instruments Designated as Amortized into Hedged Activity Disclosure
Midwest Extreme Weather Event
Midwest Extreme Weather Event [Member]
Midwest Extreme Weather Event
Investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Net cash provided by (used in) operating activities, total
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
San Antonio Water System and other
Other Miscellaneous Long-Term Investments
Other Miscellaneous Long-Term Investments
Long-term investments (note 6)
Long-term investments
Long-Term Investments
Regulated natural gas
Regulated Gas [Member]
Regulated Gas [Member]
Amortization of net actuarial gains
Defined Benefit Plan, Amortization of Gain (Loss)
Subsequent Event
Subsequent Event [Member]
Debt premium
Debt Premium [Member]
Debt Premium [Member]
Cash flow hedge
Cash Flow Hedging [Member]
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Line Items]
Goodwill
Goodwill
Accrued estimated losses
Loss Contingency, Estimate of Possible Loss
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Income from long-term investments (note 6)
Income from long-term investments
Gain (Loss) on Investments
Swap
Swap [Member]
Payments upon settlement of derivatives
Payments for Derivative Instrument, Financing Activities
Other receivables
Notes Receivable, Fair Value Disclosure
Equity Components [Axis]
Equity Components [Axis]
Non-controlling interest assumed on asset acquisition
Noncontrolling Interest, Increase (Decrease) Assumed on Asset Acquisition
Noncontrolling Interest, Increase (Decrease) Assumed on Asset Acquisition
Proceeds from divestiture of operating entity
Divestiture Of Operating Entity
Divestiture Of Operating Entity
Issuance of securitized bonds for qualified extraordinary costs
Public Utilities, Issuance of Securitized Bonds, Amount
Public Utilities, Issuance of Securitized Bonds, Amount
Supplemental disclosure of cash flow information:
Supplemental Cash Flow Information [Abstract]
Gain on derivative financial instruments
Gain (Loss) on Derivatives
Gain (Loss) on Derivatives
Entity Address, Country
Entity Address, Country
Regulatory liabilities (note 5)
Non-current regulatory liabilities
Regulatory Liability, Noncurrent
Entity Address, State or Province
Entity Address, State or Province
Earnings (loss) from discontinued operations
Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic
Dividend declared for common share holders
Dividends, Common Stock
Assets held for sale (note 18)
Total assets held for sale, noncurrent
Disposal Group, Including Discontinued Operation, Assets, Noncurrent
Acquisition of non-controlling interest
Payment for Acquisition of Non-controlling Interest
Payment for Acquisition of Non-controlling Interest
Liabilities, current, total
Liabilities, Current
Other Current Liabilities
Other Current Liabilities [Member]
Seven Renewable Energy Business
Seven Renewable Energy Business [Member]
Seven Renewable Energy Business
AFUDC capitalized on regulated property
Interest Costs Capitalized Adjustment
Investment tax credits and tax benefits
Proceeds from Income Tax Refunds
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Lexington Gas Incident
Lexington Gas Incident [Member]
Lexington Gas Incident
Project cost
Equity Method Investment, Aggregate Cost
Return on equity (percent)
Public Utilities, Approved Return on Equity, Percentage
Cash dividends on common shares
Payments of Ordinary Dividends, Common Stock
Other assets
Other Assets, Current
Loss on disposition
Disposal Group Of Discontinued Operations, Gain (Loss) On Classification As Held For Sale
Disposal Group Of Discontinued Operations, Gain (Loss) On Classification As Held For Sale
Net cash provided by (used in) investing activities, total
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Loss on disposition
Gain (Loss) on Disposition of Business
Derivative instruments (note 17)
Derivative Asset, Noncurrent
Cash paid during the period for interest expense
Interest Paid, Excluding Capitalized Interest, Operating Activity
Contributions from non-controlling interests and redeemable non-controlling interests
Proceeds from Noncontrolling Interests
Document Fiscal Year Focus
Document Fiscal Year Focus
Basis of preparation
Basis of Accounting, Policy [Policy Text Block]
Net earnings (loss)
Net Income (Loss) Attributable To Noncontrolling Interest, Net Of Related Party
Net Income (Loss) Attributable To Noncontrolling Interest, Net Of Related Party
Repayments of long-term debt
Repayments of Long-Term Debt
Senior unsecured utility bonds
U.S. Dollar Senior Unsecured Utility Bonds [Member]
U.S. Dollar Senior Unsecured Utility Bonds [Member]
Cash flow discounted rate
Financial Asset, Measurement Input
Financial Asset, Measurement Input
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Carrying amount
Reported Value Measurement [Member]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Pension and other post-employment non-service costs (note 8)
Non-service costs
Defined Benefit Plan, Non-service Costs, Total
Defined Benefit Plan, Non-service Costs, Total
Equity [Abstract]
Equity [Abstract]
Segmented information
Segment Reporting Disclosure [Text Block]
Not Designated as Hedging Instrument
Not Designated as Hedging Instrument [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Shares Rollforward
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Schedule of Components of Net Benefit Costs For Pension Plans and OPEB Recorded as Part of Administrative Expenses
Schedule of Net Benefit Costs [Table Text Block]
OCI attributable to share holders of AQN
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Net effect of non-controlling interests
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest
Income (loss) from long-term investments
Gain (Loss) on Investments, Net
Gain (Loss) on Investments, Net
Accumulated other comprehensive income (loss)
Comprehensive Income (Loss) Note [Text Block]
Operating expenses
Disposal Group, Including Discontinued Operation, Costs of Goods Sold
Renewable Energy Group
Renewable Energy Group [Member]
Renewable Energy Group [Member]
Deferred income taxes
Deferred Income Tax Assets, Net
Series D Shares
Series D Share dividend
Series D Preferred Stock [Member]
Schedule of Accumulated Other Comprehensive Income (Loss)
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Additions to property, plant and equipment and intangible assets
Payments to Acquire Productive Assets
Net earnings from continuing operations attributable to common shareholders of AQN
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
Depreciation and amortization
Depreciation and amortization
Depreciation, Depletion and Amortization
Income taxes recoverable
Increase (Decrease) in Income Taxes Receivable
Other assets
Other Assets, Noncurrent
Entity Central Index Key
Entity Central Index Key
Revenue
Revenues
Cost of removal
Removal Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liability [Line Items]
Revolving Credit Facility
Revolving Credit Facility [Member]
Effect of differences in tax rates on transactions in and within foreign jurisdictions and change in tax rates
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Defined Benefit Plan [Table]
Defined Benefit Plan [Table]
Regulatory assets, deferred carrying costs
us-gaap_DeferredCostsCurrentAndNoncurrent
us-gaap_DeferredCostsCurrentAndNoncurrent
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Financial instruments
Financial Instruments Disclosure [Text Block]
Segments [Axis]
Segments [Axis]
Comprehensive income
Comprehensive Income (Loss), Net of Tax and Amounts Reclassified from AOCI, Including Portion Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax and Amounts Reclassified from AOCI, Including Portion Attributable to Noncontrolling Interest
Class of Stock [Domain]
Class of Stock [Domain]
Canadian enacted statutory rate (percent)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Other
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Number of business units
Number of Business Units
Number of Business Units
Proceeds from sale of renewable assets
Disposal Group, Including Discontinued Operation, Consideration
ASSETS
Assets [Abstract]
Commodity volumes, gas
Volume Of Energy Commodity Contracts Natural Gas
Volume of Energy Commodity Contracts, Natural Gas
Long-term debt (note 7)
Long-term debt, excluding current portion
Long-Term Debt, Excluding Current Maturities
Credit Facility [Axis]
Credit Facility [Axis]
Statement of Financial Position Location, Balance [Axis]
Statement of Financial Position Location, Balance [Axis]
Cash and cash equivalents
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents
Number of non-litigation claims
Number of Non-litigation Claims
Number of Non-litigation Claims
Debt Instrument [Axis]
Debt Instrument [Axis]
Pension and other post-employment benefits
Retirement Benefits [Text Block]
Credit Facility [Domain]
Credit Facility [Domain]
Derivative instruments (note 17)
Derivative Liability, Current
Assets
Assets, Excluding Assets Held for Sale
Assets, Excluding Assets Held for Sale
subordinated unsecured notes
$750,000 Subordinated Unsecured Notes [Member]
$750,000 Subordinated Unsecured Notes
Entity Address, Address Line One
Entity Address, Address Line One
Cost of equity funds used for construction purposes
Public Utilities, Allowance for Funds Used During Construction, Additions
AOCI
AOCI Attributable to Parent [Member]
Amortization of cash flow hedge
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Amortization of Cash Flow Hedge, after Tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Amortization of Cash Flow Hedge, after Tax
Interest rate (percent)
Debt Instrument, Interest Rate, Stated Percentage
Investment, Name [Axis]
Investment, Name [Axis]
Allowance for doubtful accounts receivable
Accounts Receivable, Allowance for Credit Loss, Current
Operating loss from discontinued operations
Disposal Group, Including Discontinued Operation, Operating Income (Loss)
Redeemable non-controlling interests
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]
Property, plant and equipment, net
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent
Other long-term investments
Other Long-Term Investments
Amortization of prior service credits
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Clean energy and other customer programs
Customer Programs [Member]
Customer Programs [Member]
Accounts receivable balances
Accounts Receivable, after Allowance for Credit Loss
Entity Registrant Name
Entity Registrant Name
Unrealized loss in AOCI to be reclassified
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months
Net benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Total liabilities
Total liabilities associated with assets held for sale
Disposal Group, Including Discontinued Operation, Liabilities
Impact of regulatory accounts
Defined Benefit Plan Amortization Of Regulatory Assets and Liabilities
Defined Benefit Plan Amortization Of Regulatory Assets and Liabilities
Schedule of Long Term Debt
Schedule of Long-Term Debt Instruments [Table Text Block]
Costs and expenses, total
Costs and Expenses
Regulated Operations [Abstract]
Regulated Operations [Abstract]
Senior unsecured notes
U.S Dollar Senior Unsecured Notes [Member]
U.S Dollar Senior Unsecured Notes [Member]
Total financial assets
Assets, Fair Value Disclosure
Derivatives instruments
Disposal Group Including Discontinued Operation Derivative Instruments Current
Disposal Group Including Discontinued Operation Derivative Instruments Current
Long-term debt
Long-Term Debt, Fair Value
Investments, All Other Investments [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Standards Update and Change in Accounting Principle [Abstract]
Adjustments from investments carried at fair value
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount
Interest cost
Defined Benefit Plan, Interest Cost
Renewable Energy Business
Renewable Energy Business [Member]
Renewable Energy Business
Long-term investments carried at fair value
Long-term investments carried at fair value
Long-term Investments, Fair Value
Long-term Investments, Fair Value
Gain on investments carried at fair value
Equity Method Investment, Fair Value Gain (Loss)
Equity Method Investment, Fair Value Gain (Loss)
Other Noncurrent Liabilities
Other Noncurrent Liabilities [Member]
Common shares issued pursuant to share-based awards
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Letters of credit issued
Letters of Credit Outstanding, Amount
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Common shares issued under employee share purchase plan
Stock Issued During Period, Value, Employee Stock Purchase Plan
Contributions received from non-controlling interests, net of cost
Noncontrolling Interest, Increase from Subsidiary Equity Issuance
Schedule of Other Net Losses
Schedule of Other Nonoperating Expense, by Component [Table Text Block]
Income tax expense from continuing operations (note 11)
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Net change in other long-term liabilities
Proceeds from (Payment for) Other Financing Activity
Other interest income
Interest Income, Other
Long-term debt
Interest Expense, Debt
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI to the unaudited interim condensed consolidated statements of operations
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Regulatory Asset [Axis]
Regulatory Asset [Axis]
Gain (loss) on derivative financial instruments (note 17(b)(iv))
Gain (loss) on derivative financial instruments
Gain (Loss) on Hedging Activity
Total liquidity and capital reserves
Total Liquidity and Capital Reserves
Total Liquidity and Capital Reserves
Expenses of wildlife memerandum account
Expenses of Wildlife Memorandum Account
Expenses of Wildlife Memorandum Account
Non-controlling interests, total
Equity, Attributable to Noncontrolling Interest
Pension and post-employment expense in excess of (lower than) contributions
Other Noncash Income (Expense)
Canada
CANADA
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Par value
Debt Instrument, Face Amount
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Change in pension and other post-employment expense, net of tax recovery
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Operating expenses
Operating Costs and Expenses
Foreign exchange contract
Foreign Exchange Contract [Member]
Fair value
Estimate of Fair Value Measurement [Member]
Disclosure Changes In Non Cash Operating Items [Abstract]
Disclosure Changes In Non Cash Operating Items [Abstract]
Disclosure - Changes in Non-Cash Operating Items [Abstract]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Preferred shares
Preferred Stock [Member]
Income tax recovery
Discontinued Operation, Tax Effect of Discontinued Operation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Net earnings from continuing operations attributable to shareholders of AQN
Net earnings (loss) from continuing operations attributable to shareholders of AQN
Net Income (Loss) from Continuing Operations Attributable to Shareholders
Net Income (Loss) from Continuing Operations Attributable to Shareholders
Regulatory assets (note 5)
Non-current regulatory assets
Regulatory Asset, Noncurrent
Changes in non-cash operating items
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital
OCI attributable to the non-controlling interests
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest
Revenue
Revenue
Revenues [Abstract]
Share-based compensation
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Accumulated other comprehensive income ("AOCI") (note 10)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Other assets
Disposal Group, Including Discontinued Operation, Other Assets, Current
U.S. Senior Secured Notes
U.S. Senior Secured Notes [Member]
U.S. Senior Secured Notes
Total
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Litigation Case [Axis]
Litigation Case [Axis]
Segments [Domain]
Segments [Domain]
Liquidity available under the facilities
Line of Credit Facility, Remaining Borrowing Capacity
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Amounts reclassified from AOCI
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
Revolving and term credit facilities
Line of Credit, Current
Statement of Financial Position Location, Balance [Domain]
Statement of Financial Position Location, Balance [Domain]
Fair Value of Financial Instruments [Table]
Fair Value Of Financial Instruments [Table]
Fair Value of Financial Instruments [Table]
Long-term investments
Long Term Investments And Notes Receivable Disclosure [Text Block]
Long Term Investments and Notes Receivable Disclosure.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other
Other Nonoperating Expense, Other Expense
Other Nonoperating Expense, Other Expense
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Senior Notes
Senior Notes [Member]
Preferred shares
Preferred Stock, Value, Issued
Accounts payable
Accounts Payable, Current
Interest on long-term debt
Interest Payable
Net earnings attributable to common shareholders of Algonquin Power & Utilities Corp. – diluted
Net Income (Loss) Available to Common Stockholders, Diluted
Net change in non-cash operating items (note 16)
Increase (Decrease) in Operating Capital, Continuing Operations
Increase (Decrease) in Operating Capital, Continuing Operations
subordinated unsecured notes
C$400,000 Subordinated Unsecured Notes [Member]
C$400,000 Subordinated Unsecured Notes
Common shares (note 9(a))
Common Stock, Value, Issued
Commitments and contingencies
Commitments and Contingencies Disclosure [Text Block]
Revenue
Disposal Group, Including Discontinued Operation, Revenue
Diluted (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Commitments and contingencies (note 15)
Commitments and Contingencies
Derivative [Table]
Derivative [Table]
Business Combination [Axis]
Business Combination [Axis]
Supplies and consumables inventory
Inventory, Raw Materials and Supplies, Net of Reserves
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Schedule of Fair Value of Financial Instruments
Fair Value Of Financial Instruments [Table Text Block]
Fair Value Of Financial Instruments Table.
Non- controlling interests
Noncontrolling Interest [Member]
Long-term maintenance contract
Long-term Maintenance Contract [Member]
Long-term Maintenance Contract [Member]
Long-term debt
Long-Term Debt [Text Block]
Schedule of Income from Long-term Investments
Investment Income [Table Text Block]
Non-controlling interests share of income
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount
Interest expense
Interest Costs Incurred
Equity interest (percent)
Equity Method Investment, Ownership Percentage
Recently issued accounting pronouncements
Accounting Standards Update and Change in Accounting Principle [Text Block]
Fuel and commodity cost adjustments
Fuel and commodity cost adjustments
Energy [Member]
Energy [Member]
Net change in commercial paper
Proceeds from (Repayments of) Commercial Paper
Equity Component [Domain]
Equity Component [Domain]
Senior Unsecured Debt
Senior Unsecured Debt [Member]
Senior Unsecured Debt [Member]
Other net losses (note 12)
Other net losses
Other Nonoperating Expense
Document Period End Date
Document Period End Date
5.25%, U.S. Dollar Subordinated Unsecured Notes
5.25%, U.S. Dollar Subordinated Unsecured Notes [Member]
5.25%, U.S. Dollar Subordinated Unsecured Notes
Income taxes
Income Tax Disclosure [Text Block]
Disposition of AOCI
Disposal Group, Including Discontinued Operation, Accumulated Other Comprehensive Income
Disposal Group, Including Discontinued Operation, Accumulated Other Comprehensive Income
Earnings Per Share, Basic and Diluted EPS [Abstract]
Earnings Per Share, Basic and Diluted EPS
Hedging Designation [Axis]
Hedging Designation [Axis]
Other income (note 5)
Other income
Other Interest and Dividend Income
Non-regulated energy sales
Non-Regulated Energy [Member]
Non-Regulated Energy [Member]
Total equity
Beginning balance
Ending balance
Equity, Including Portion Attributable to Noncontrolling Interest
Convertible debentures
Convertible Debt, Fair Value Disclosures
Weighted average number of shares
Weighted Average Number Of Shares [Abstract]
Weighted Average Number Of Shares [Abstract]
Senior secured project notes
Canadian Dollar Senior Secured Projects Notes [Member]
Canadian Dollar Senior Secured Projects Notes [Member]
Document Type
Document Type
Level 3
Fair Value, Inputs, Level 3 [Member]
Investments carried at fair value
Investments carried at fair value
Equity Method Investments, Fair Value Disclosure
Basic and diluted net earnings (loss) per share
Earnings Per Share [Text Block]
Other assets
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent
Additional paid-in capital
Additional Paid in Capital
Change in pension and other post-employment benefits, net of tax recovery of $0.4 and $0.7 (2024 - tax recovery of $0.4 and $1.8)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Pension and other post-employment benefits obligation
Disposal Group, Including Discontinued Operation, Pension Plan Benefit Obligation, Noncurrent
Trade and other receivables, net (note 4)
Accounts and Other Receivables, Net, Current
Product and Service [Axis]
Product and Service [Axis]
Derivative Contract [Domain]
Derivative Contract [Domain]
Litigation settlement, loss
Litigation Settlement, Loss
Revenue
Other revenue
Revenue from Contract with Customer, Excluding Assessed Tax
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Settlement of Purchase contracts (in shares)
Stock Issued During Period Shares In Settlement Of Corporate Units
Stock Issued During Period Shares In Settlement Of Corporate Units
Rate review costs
Rate Review Costs [Member]
Rate Review Costs
Initial value and changes in derivative financial instruments, net of amortization
Unrealized gain (loss) on commodity contracts
Unrealized Gain (Loss) on Derivatives
Assets, current, total
Assets, Current
Regulatory Agency [Domain]
Regulatory Agency [Domain]
Tax basis step-up
Income Tax Rate Reconciliation, Adjustment Relating To Prior Periods, Amount
Income Tax Rate Reconciliation, Adjustment Relating To Prior Periods, Amount
Operating activities
Cash Provided by (Used in) Operating Activity, Discontinued Operation
Contingent consideration
Business Combination, Contingent Consideration, Asset
Accrued liabilities
Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current
Issuance of common shares under dividend reinvestment plan and share-based compensation plans
Proceeds from Issuance of Common Stock, Dividend Reinvestment Plan
Equity-method investees
Noncontrolling Interest in Partnerships and Joint Ventures
Noncontrolling Interest in Partnerships and Joint Ventures
Weighted average coupon
Debt, Weighted Average Interest Rate
Net regulatory assets and liabilities
Increase (Decrease) in Regulatory Assets and Liabilities
Regulatory Asset [Domain]
Regulatory Asset [Domain]
Depreciation and amortization
Disposal Group, Including Discontinued Operation, Depreciation and Amortization
Fair Value of Financial Instruments [Line Items]
Fair Value Of Financial Instruments [Line Items]
Fair Value of Financial Instruments [Line Items]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Shares surrendered to fund withholding taxes on exercised share options
Payment, Tax Withholding, Share-Based Payment Arrangement
Net earnings attributable to common shareholders of Algonquin Power & Utilities Corp. – basic
Net Income (Loss) Available to Common Stockholders, Basic
Regulatory assets (note 5)
Less: current regulatory assets
Regulatory Asset, Current
Loss before income taxes
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Insurance settlements receivable
Insurance Settlements Receivable
Net current period OCI attributable to shareholders of AQN
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Current liabilities:
Liabilities, Current [Abstract]
Geographical [Axis]
Geographical [Axis]
Level 1
Fair Value, Inputs, Level 1 [Member]
Loss (gain) on foreign exchange
Gain (Loss), Foreign Currency Transaction, before Tax
Diluted net earnings per share (USD per share)
Earnings Per Share, Diluted
Non-controlling interest
Disposal Group, Including Discontinued Operation, Non-Controlling Interest
Disposal Group, Including Discontinued Operation, Non-Controlling Interest
Fuel and natural gas in storage
Increase (Decrease) in Fuel Inventories
5.56%, U.S. Dollar Subordinated Unsecured Notes
5.97%, U.S. Dollar Subordinated Unsecured Notes [Member]
5.97%, U.S. Dollar Subordinated Unsecured Notes
Non-cash financing and investing activities:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Earn-out fair value
Disposal Group, Including Discontinued Operation, Earn-Out Fair Value
Disposal Group, Including Discontinued Operation, Earn-Out Fair Value
Consolidation Items [Domain]
Consolidation Items [Domain]
Nonoperating income (expense)
Nonoperating Income (Expense)
Interest expense (note 7)
Interest Expense, Other Long-Term Debt
Interest and other income (loss)
Interest and Other Income from Equity Method Investments
Interest and Other Income from Equity Method Investments
Earnings (loss) from discontinued operations, net of tax (note 18)
Earnings (loss) from discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Prepaid expenses
Increase (Decrease) in Prepaid Expense
Schedule of Interest Expense
Interest Income and Interest Expense Disclosure [Table Text Block]
Unbilled revenue
Unbilled Revenues [Member]
Other cost of sales
Cost of Sales, Other
Cost of Sales, Other
Regulatory Liability [Domain]
Regulatory Liability [Domain]
Non-controlling interests
Noncontrolling Interest [Abstract]
Damage from Fire, Explosion or Other Hazard
Damage from Fire, Explosion or Other Hazard [Member]
Cash paid (received) during the period for income taxes - net
Income Taxes Paid, Net
Property, plant and equipment, intangible assets and accrued liabilities in exchange of note receivable
Sale of Property, Plant and Equipment, Intangible Assets and Accrued Liabilities in Exchange of Note Receivable
Sale of Property, Plant and Equipment, Intangible Assets and Accrued Liabilities in Exchange of Note Receivable
Senior Unsecured Credit Facility
Senior Unsecured Credit Facility [Member]
Senior Unsecured Credit Facility
Assets held for sale (note 18)
Total assets held for sale, current
Disposal Group, Including Discontinued Operation, Assets, Current
Non-service costs
Defined Benefit Plan, Non-service Costs [Abstract]
Defined Benefit Plan, Non-service Costs [Abstract]
Service cost
Defined Benefit Plan, Service Cost
Number of lawsuits filed by insurance companies
Number of Lawsuits Filed by Insurance Companies
Number of Lawsuits Filed by Insurance Companies
Other comprehensive income (loss)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Shareholders' capital
Equity [Text Block]
Undrawn portion of uncommitted letter of credit facilities
Line of Credit Facility, Current Borrowing Capacity
Production-based cash contributions from non-controlling interest from discontinued operations
Production-Based Cash Contributions From Non-Controlling Interest From Discontinued Operations
Production-Based Cash Contributions From Non-Controlling Interest From Discontinued Operations
Net earnings attributable to shareholders of Algonquin Power & Utilities Corp.
Net Income (Loss) Attributable to Parent
Derivative instruments
Disposal Group Including Discontinued Operation Derivative Instruments
Disposal Group Including Discontinued Operation Derivative Instruments
Schedule of Changes in Non-Cash Operating Items
Schedule of Other Significant Noncash Transactions [Table Text Block]
Revenue
Revenues, Excluding Other Revenue
Revenues, Excluding Other Revenue
Senior unsecured revolving credit facilities
Senior Unsecured Revolving Credit Facilities [Member]
Senior Unsecured Revolving Credit Facilities
Other
Interest Expense (Income), Other
Interest Expense (Income), Other
Trade and other receivables
Accounts Receivables [Text Block]
Accounts Receivables.
Basic net earnings (loss) per share from discontinued operations (USD per share)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share
Schedule of Provision for Income Taxes
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Equity:
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Interest expense
Disposal Group, Including Discontinued Operation, Interest Expense
Securitized costs, net
Securitized Costs, Net [Member]
Securitized Costs Net
Property, plant and equipment, net
Property, plant and equipment
Property, Plant and Equipment, Net
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Regulated water
Regulated Water [Member]
Regulated Water [Member]
Schedule of Derivative Financial Instruments Designated as Cash Flow Hedge, Effect on Consolidated Statement of Operations
Derivative Instruments Designated As Cash Flow Hedges Activity Disclosure [Table Text Block]
Derivative Instruments Designated as Cash Flow Hedges Activity Disclosure.
Accounts receivable
Increase (Decrease) in Accounts Receivable
Series A Shares
Series A Share dividend
Series A Preferred Stock [Member]
Derivative [Line Items]
Derivative [Line Items]
Dividends declared and distributions to non-controlling interests
Dividends and Distributions to Noncontrolling Interests
Dividends and Distributions to Noncontrolling Interests
Other net losses
Disposal Group, Including Discontinued Operation, Other Net Gain (Loss)
Disposal Group, Including Discontinued Operation, Other Net Gain (Loss)
Operating income
Operating Income (Loss)
Deficit
Retained Earnings (Accumulated Deficit)
Other long-term investments
Disposal Group Including Discontinued Operation Other Long Term Investments
Disposal Group Including Discontinued Operation Other Long Term Investments
Expected income tax expense at Canadian statutory rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Cross-currency interest rate swap
Cross Currency Interest Rate Contract [Member]
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Repayments of debt
Repayments of Debt
Property, plant and equipment acquisitions in accruals
Noncash or Part Noncash Acquisition, Fixed Assets Acquired
Interest expense
Interest Expense, Operating and Nonoperating
Class of Stock [Axis]
Class of Stock [Axis]
Increase in long-term debt
Proceeds from Issuance of Long-Term Debt
Current Fiscal Year End Date
Current Fiscal Year End Date
Loss on foreign exchange
Disposal Group, Including Discontinued Operation, Foreign Currency Translation Gains (Losses)
Unrealized gain (loss) on cash flow hedges
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Line of credit facility, maximum borrowing capacity decrease
Line of Credit Facility, Accordion Feature, Lower Borrowing Capacity Option
Line of Credit Facility, Accordion Feature, Lower Borrowing Capacity Option
Issuance of common shares, net of costs
Proceeds from Issuance of Common Stock, Net of Stock Issuance Costs
Proceeds from Issuance of Common Stock, Net of Stock Issuance Costs
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
General Rate Case
General Rate Case [Member]
General Rate Case
Liabilities associated with assets held for sale (note 18)
Total liabilities associated with assets held for sale, current
Disposal Group, Including Discontinued Operation, Liabilities, Current
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Other net gains (losses)
Other Nonoperating Income (Expense)
Hydro Group
Hydro Group [Member]
Hydro Group
Statement [Table]
Statement [Table]
Total derivative instruments
Derivative Liability
Deferred taxes
Deferred Income Tax Expense (Benefit)
Adjustments and items not affecting cash:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Net effect of non-controlling interest from continuing operations
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
Other long-term liabilities
Deferred Credits and Other Liabilities, Current
Operating expense
Disposal Group, Including Discontinued Operation, Operating Expense
Distributions received from equity investments, net of income
Proceeds from Equity Method Investment, Distribution
Other long-term liabilities
Disposal Group Including Discontinued Operation Other Long Term Liabilities
Disposal Group Including Discontinued Operation Other Long Term Liabilities
Notes to the Consolidated Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Tax equity investments
Tax Equity Investments
Tax Equity Investments
Anti-diluted shares excludes the potential impact (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Amendment Flag
Amendment Flag
Other long-term liabilities
Disposal Group, Including Discontinued Operation, Other Long-Term Liabilities, Noncurrent
Disposal Group, Including Discontinued Operation, Other Long-Term Liabilities, Noncurrent
OPEB
Other Postretirement Benefits Plan [Member]
Net cash provided by (used in) financing activities, total
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Other
Other [Member]
Other
Valuation Approach and Technique [Axis]
Valuation Approach and Technique [Axis]
Schedule of Effects on Statement of Operations of Derivative Financial Instruments Not Designated as Hedges
Derivative Instruments Not Designated As Cash Flow Hedges Activity Disclosure [Table Text Block]
Derivative Instruments Not Designated as Cash Flow Hedges Activity Disclosure.
Basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Expenses
Cost of Product and Service Sold
Schedule of Reconciliation of Net Earnings (Loss) and Weighted Average Shares Used in Computation of Basic and Diluted Earnings (Loss) per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Mountain View Fire
Mountain View Fire [Member]
Mountain View Fire
Receivables Billing Status [Domain]
Receivables Billing Status [Domain]
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Prepaid expenses
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current
Supplier finance program, obligation
Supplier Finance Program, Obligation
Other
Other Regulatory Assets (Liabilities) [Member]
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Expenses
Costs and Expenses [Abstract]
Valuation Technique, Discounted Cash Flow
Valuation Technique, Discounted Cash Flow [Member]
Non-regulated energy purchased
Disposal Group Including Discontinued Operation Purchases
Disposal Group Including Discontinued Operation Purchases
Tax equity investments
Tax Equity Investments Gain (Loss)
Tax Equity Investments Gain (Loss)
Apple Valley Condemnation Proceedings
Apple Valley Condemnation Proceedings [Member]
Apple Valley Condemnation Proceedings
Equity interest (percent)
Public Utilities, Approved Equity Capital Structure, Percentage
Total regulatory liabilities
Regulatory Liability
Redeemable non-controlling interests not included in equity
Reclassifications of Temporary to Permanent Equity
Public Utilities, Regulatory Proceeding [Axis]
Public Utilities, Regulatory Proceeding [Axis]
Trade and other receivables, net
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net
Dividend and interest income from investments carried at fair value
Equity Method Investment, Interest Income
Equity Method Investment, Interest Income
Total regulatory assets
Regulatory Asset
Dividends payable
Dividends Payable, Current
Derivative instruments (note 17)
Derivative Asset, Current
Foreign currency translation adjustment, net of tax expense of $nil and $nil (2024 - tax expense of $1.3 and $3.2) (notes 17(b)(iii) and 17(b)(iv))
Foreign currency gain (loss)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Corporate Group
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Increase (decrease) resulting from:
Income Tax Reconciliation Increase Decrease In Income Tax Recovery Expense [Abstract]
Income Tax Reconciliation Increase Decrease In Income Tax Recovery Expense [Abstract]
Regulatory liabilities (note 5)
Less: current regulatory liabilities
Regulatory Liability, Current
Revenue related to alternative revenue programs, not recognized as revenue from contract with customers
Revenue Not From Contract with Customer, Alternative Revenue Program
Revenue Not From Contract with Customer, Alternative Revenue Program
Liabilities, noncurrent, total
Liabilities, Noncurrent
Operating expenses
Product and Service, Other [Member]
Empire Electric
Empire Electric [Member]
Empire Electric
Cash provided by (used in):
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation [Abstract]
Dividends declared for preferred share holders
Dividends, Preferred Stock
Line of credit facility, maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Investment and income
Investment Income, Net
Prepaid expenses
Prepaid Expense, Current
Other liabilities
Other Liabilities, Current
Atlantica
Atlantica Yield [Member]
Atlantica Yield [Member]
Pension and other post-employment benefits obligation
Liability, Defined Benefit Plan, Noncurrent
Common shares issued upon public offering, net of tax effected cost
Stock Issued During Period, Value, New Issues
Intangible assets, net
Disposal Group, Including Discontinued Operation, Intangible Assets, Noncurrent
Statement [Line Items]
Statement [Line Items]
Regulated Services Group
Regulated Services Group
Regulated Services Group [Member]
Regulated Services Group
Consolidation Items [Axis]
Consolidation Items [Axis]
Extinguishment of debt
Extinguishment of Debt, Amount
Fuel and natural gas in storage
Energy Related Inventory, Natural Gas in Storage
Cash and cash equivalents
Cash on hand
Cash and Cash Equivalent
Supplies and consumables inventory
Disposal Group, Including Discontinued Operation, Inventory, Current
Amortization of cash flow hedge
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Amortization of Cash Flow Hedge, Benefit, after Tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Amortization of Cash Flow Hedge, Benefit, after Tax
Environmental remediation
Environmental Restoration Costs [Member]
Common shares
Common Stock [Member]
Other non-controlling interests
Stockholders' Equity Attributable to Noncontrolling Interest, Other
Stockholders' Equity Attributable to Noncontrolling Interest, Other
Increase (decrease) in cash, cash equivalents and restricted cash
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Effect of dilutive securities (in shares)
Weighted Average Number of Shares Outstanding, Diluted, Adjustment