<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:89db5cb2-2d64-4049-9c12-b9b633e3f1fb,g:74baeb0f-e929-4406-8980-c5f971dac0e1-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:aqunf="http://www.algonquinpower.com/20210630" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.algonquinpower.com/20210630">
  <xs:import namespace="http://fasb.org/srt/2021-01-31" schemaLocation="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2021-01-31" schemaLocation="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2021" schemaLocation="https://xbrl.sec.gov/country/2021/country-2021.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2021" schemaLocation="https://xbrl.sec.gov/dei/2021/dei-2021.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="aqunf-20210630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="aqunf-20210630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="aqunf-20210630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="aqunf-20210630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://www.algonquinpower.com/role/CoverPage">
        <link:definition>0001001 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofOperations" roleURI="http://www.algonquinpower.com/role/ConsolidatedStatementsofOperations">
        <link:definition>1001002 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofComprehensiveIncome" roleURI="http://www.algonquinpower.com/role/ConsolidatedStatementsofComprehensiveIncome">
        <link:definition>1002003 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofComprehensiveIncomeParenthetical" roleURI="http://www.algonquinpower.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical">
        <link:definition>1003004 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.algonquinpower.com/role/ConsolidatedBalanceSheets">
        <link:definition>1004005 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementofEquity" roleURI="http://www.algonquinpower.com/role/ConsolidatedStatementofEquity">
        <link:definition>1005006 - Statement - Consolidated Statement of Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.algonquinpower.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>1006007 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotestotheConsolidatedFinancialStatements" roleURI="http://www.algonquinpower.com/role/NotestotheConsolidatedFinancialStatements">
        <link:definition>2101101 - Disclosure - Notes to the Consolidated Financial Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotestotheConsolidatedFinancialStatementsNotestotheConsolidatedFinancialStatementsNarrativeDetails" roleURI="http://www.algonquinpower.com/role/NotestotheConsolidatedFinancialStatementsNotestotheConsolidatedFinancialStatementsNarrativeDetails">
        <link:definition>2402401 - Disclosure - Notes to the Consolidated Financial Statements Notes to the Consolidated Financial Statements - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Significantaccountingpolicies" roleURI="http://www.algonquinpower.com/role/Significantaccountingpolicies">
        <link:definition>2103102 - Disclosure - Significant accounting policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantaccountingpoliciesPolicies" roleURI="http://www.algonquinpower.com/role/SignificantaccountingpoliciesPolicies">
        <link:definition>2204201 - Disclosure - Significant accounting policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Recentlyissuedaccountingpronouncements" roleURI="http://www.algonquinpower.com/role/Recentlyissuedaccountingpronouncements">
        <link:definition>2105103 - Disclosure - Recently issued accounting pronouncements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Businessandassetacquisitions" roleURI="http://www.algonquinpower.com/role/Businessandassetacquisitions">
        <link:definition>2106104 - Disclosure - Business and asset acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessandassetacquisitionsTables" roleURI="http://www.algonquinpower.com/role/BusinessandassetacquisitionsTables">
        <link:definition>2307301 - Disclosure - Business and asset acquisitions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessandassetacquisitionsDetails" roleURI="http://www.algonquinpower.com/role/BusinessandassetacquisitionsDetails">
        <link:definition>2408402 - Disclosure - Business and asset acquisitions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessandassetacquisitionsDetails_1" roleURI="http://www.algonquinpower.com/role/BusinessandassetacquisitionsDetails_1">
        <link:definition>2408402 - Disclosure - Business and asset acquisitions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Accountsreceivable" roleURI="http://www.algonquinpower.com/role/Accountsreceivable">
        <link:definition>2109105 - Disclosure - Accounts receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsreceivableAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/AccountsreceivableAdditionalInformationDetail">
        <link:definition>2410403 - Disclosure - Accounts receivable - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Regulatorymatters" roleURI="http://www.algonquinpower.com/role/Regulatorymatters">
        <link:definition>2111106 - Disclosure - Regulatory matters</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatorymattersTables" roleURI="http://www.algonquinpower.com/role/RegulatorymattersTables">
        <link:definition>2312302 - Disclosure - Regulatory matters (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatorymattersApprovedAnnualRevenueIncreasesDetails" roleURI="http://www.algonquinpower.com/role/RegulatorymattersApprovedAnnualRevenueIncreasesDetails">
        <link:definition>2413404 - Disclosure - Regulatory matters - Approved Annual Revenue Increases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatorymattersRegulatoryAssetsandLiabilitiesDetail" roleURI="http://www.algonquinpower.com/role/RegulatorymattersRegulatoryAssetsandLiabilitiesDetail">
        <link:definition>2414405 - Disclosure - Regulatory matters - Regulatory Assets and Liabilities (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Longterminvestments" roleURI="http://www.algonquinpower.com/role/Longterminvestments">
        <link:definition>2115107 - Disclosure - Long-term investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongterminvestmentsTables" roleURI="http://www.algonquinpower.com/role/LongterminvestmentsTables">
        <link:definition>2316303 - Disclosure - Long-term investments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongterminvestmentsScheduleofLongTermInvestmentsDetail" roleURI="http://www.algonquinpower.com/role/LongterminvestmentsScheduleofLongTermInvestmentsDetail">
        <link:definition>2417406 - Disclosure - Long-term investments - Schedule of Long-Term Investments (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongterminvestmentsIncomefromLongtermInvestmentsDetails" roleURI="http://www.algonquinpower.com/role/LongterminvestmentsIncomefromLongtermInvestmentsDetails">
        <link:definition>2418407 - Disclosure - Long-term investments - Income from Long-term Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongterminvestmentsAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/LongterminvestmentsAdditionalInformationDetail">
        <link:definition>2419408 - Disclosure - Long-term investments - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongterminvestmentsInvestmentsinSignificantPartnershipsandJointVenturesDetails" roleURI="http://www.algonquinpower.com/role/LongterminvestmentsInvestmentsinSignificantPartnershipsandJointVenturesDetails">
        <link:definition>2420409 - Disclosure - Long-term investments - Investments in Significant Partnerships and Joint Ventures (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongterminvestmentsCombinedInformationforAPUCsinterestinVIEsDetails" roleURI="http://www.algonquinpower.com/role/LongterminvestmentsCombinedInformationforAPUCsinterestinVIEsDetails">
        <link:definition>2421410 - Disclosure - Long-term investments -Combined Information for APUC's interest in VIE's (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Longtermdebt" roleURI="http://www.algonquinpower.com/role/Longtermdebt">
        <link:definition>2122108 - Disclosure - Long-term debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongtermdebtTables" roleURI="http://www.algonquinpower.com/role/LongtermdebtTables">
        <link:definition>2323304 - Disclosure - Long-term debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongtermdebtScheduleofLongtermDebtDetail" roleURI="http://www.algonquinpower.com/role/LongtermdebtScheduleofLongtermDebtDetail">
        <link:definition>2424411 - Disclosure - Long-term debt - Schedule of Long-term Debt (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongtermdebtNarrativeDetail" roleURI="http://www.algonquinpower.com/role/LongtermdebtNarrativeDetail">
        <link:definition>2425412 - Disclosure - Long-term debt - Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Pensionandotherpostretirementbenefits" roleURI="http://www.algonquinpower.com/role/Pensionandotherpostretirementbenefits">
        <link:definition>2126109 - Disclosure - Pension and other post-retirement benefits</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionandotherpostretirementbenefitsTables" roleURI="http://www.algonquinpower.com/role/PensionandotherpostretirementbenefitsTables">
        <link:definition>2327305 - Disclosure - Pension and other post-retirement benefits (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionandotherpostretirementbenefitsComponentsofNetBenefitCostsforPensionPlansandOPEBRecordedasPartofAdministrativeExpensesDetail" roleURI="http://www.algonquinpower.com/role/PensionandotherpostretirementbenefitsComponentsofNetBenefitCostsforPensionPlansandOPEBRecordedasPartofAdministrativeExpensesDetail">
        <link:definition>2428413 - Disclosure - Pension and other post-retirement benefits - Components of Net Benefit Costs for Pension Plans and OPEB Recorded as Part of Administrative Expenses (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Otherlongtermliabilities" roleURI="http://www.algonquinpower.com/role/Otherlongtermliabilities">
        <link:definition>2129110 - Disclosure - Other long-term liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherlongtermliabilitiesanddeferredcreditsTables" roleURI="http://www.algonquinpower.com/role/OtherlongtermliabilitiesanddeferredcreditsTables">
        <link:definition>2330306 - Disclosure - Other long-term liabilities and deferred credits (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherlongtermliabilitiesScheduleofLongTermLiabilitiesandDeferredCreditsDetail" roleURI="http://www.algonquinpower.com/role/OtherlongtermliabilitiesScheduleofLongTermLiabilitiesandDeferredCreditsDetail">
        <link:definition>2431414 - Disclosure - Other long-term liabilities - Schedule of Long-Term Liabilities and Deferred Credits (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherlongtermliabilitiesScheduleofLongTermLiabilitiesandDeferredCreditsDetail_1" roleURI="http://www.algonquinpower.com/role/OtherlongtermliabilitiesScheduleofLongTermLiabilitiesandDeferredCreditsDetail_1">
        <link:definition>2431414 - Disclosure - Other long-term liabilities - Schedule of Long-Term Liabilities and Deferred Credits (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Shareholderscapital" roleURI="http://www.algonquinpower.com/role/Shareholderscapital">
        <link:definition>2132111 - Disclosure - Shareholders' capital</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholderscapitalTables" roleURI="http://www.algonquinpower.com/role/ShareholderscapitalTables">
        <link:definition>2333307 - Disclosure - Shareholders' capital (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholderscapitalCommonSharesDetail" roleURI="http://www.algonquinpower.com/role/ShareholderscapitalCommonSharesDetail">
        <link:definition>2434415 - Disclosure - Shareholders' capital - Common Shares (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholderscapitalAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/ShareholderscapitalAdditionalInformationDetail">
        <link:definition>2435416 - Disclosure - Shareholders' capital - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholderscapitalFairValueofShareOptionsGrantedDetail" roleURI="http://www.algonquinpower.com/role/ShareholderscapitalFairValueofShareOptionsGrantedDetail">
        <link:definition>2436417 - Disclosure - Shareholders' capital - Fair Value of Share Options Granted (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Accumulatedothercomprehensiveincomeloss" roleURI="http://www.algonquinpower.com/role/Accumulatedothercomprehensiveincomeloss">
        <link:definition>2137112 - Disclosure - Accumulated other comprehensive income (loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedothercomprehensiveincomelossTables" roleURI="http://www.algonquinpower.com/role/AccumulatedothercomprehensiveincomelossTables">
        <link:definition>2338308 - Disclosure - Accumulated other comprehensive income (loss) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedothercomprehensiveincomelossScheduleofAccumulatedOtherComprehensiveIncomelossDetail" roleURI="http://www.algonquinpower.com/role/AccumulatedothercomprehensiveincomelossScheduleofAccumulatedOtherComprehensiveIncomelossDetail">
        <link:definition>2439418 - Disclosure - Accumulated other comprehensive income (loss) - Schedule of Accumulated Other Comprehensive Income (loss) (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Dividends" roleURI="http://www.algonquinpower.com/role/Dividends">
        <link:definition>2140113 - Disclosure - Dividends</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DividendsTables" roleURI="http://www.algonquinpower.com/role/DividendsTables">
        <link:definition>2341309 - Disclosure - Dividends (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DividendsDetail" roleURI="http://www.algonquinpower.com/role/DividendsDetail">
        <link:definition>2442419 - Disclosure - Dividends (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Relatedpartytransactions" roleURI="http://www.algonquinpower.com/role/Relatedpartytransactions">
        <link:definition>2143114 - Disclosure - Related party transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedpartytransactionsDetail" roleURI="http://www.algonquinpower.com/role/RelatedpartytransactionsDetail">
        <link:definition>2444420 - Disclosure - Related party transactions (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncontrollingInterestsandRedeemablenoncontrollingInterest" roleURI="http://www.algonquinpower.com/role/NoncontrollingInterestsandRedeemablenoncontrollingInterest">
        <link:definition>2145115 - Disclosure - Non-controlling Interests and Redeemable non-controlling Interest</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncontrollingInterestsandRedeemablenoncontrollingInterestTables" roleURI="http://www.algonquinpower.com/role/NoncontrollingInterestsandRedeemablenoncontrollingInterestTables">
        <link:definition>2346310 - Disclosure - Non-controlling Interests and Redeemable non-controlling Interest (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncontrollingInterestsandRedeemablenoncontrollingInterestNetLossAttributabletoNonControllingInterestDetails" roleURI="http://www.algonquinpower.com/role/NoncontrollingInterestsandRedeemablenoncontrollingInterestNetLossAttributabletoNonControllingInterestDetails">
        <link:definition>2447421 - Disclosure - Non-controlling Interests and Redeemable non-controlling Interest - Net Loss Attributable to Non-Controlling Interest (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Incometaxes" roleURI="http://www.algonquinpower.com/role/Incometaxes">
        <link:definition>2148116 - Disclosure - Income taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncometaxesAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/IncometaxesAdditionalInformationDetail">
        <link:definition>2449422 - Disclosure - Income taxes - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Othernetlosses" roleURI="http://www.algonquinpower.com/role/Othernetlosses">
        <link:definition>2150117 - Disclosure - Other net losses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OthernetlossesTables" roleURI="http://www.algonquinpower.com/role/OthernetlossesTables">
        <link:definition>2351311 - Disclosure - Other net losses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OthernetlossesOtherLossesDetails" roleURI="http://www.algonquinpower.com/role/OthernetlossesOtherLossesDetails">
        <link:definition>2452423 - Disclosure - Other net losses Other Losses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Basicanddilutednetearningspershare" roleURI="http://www.algonquinpower.com/role/Basicanddilutednetearningspershare">
        <link:definition>2153118 - Disclosure - Basic and diluted net earnings per share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasicanddilutednetearningspershareTables" roleURI="http://www.algonquinpower.com/role/BasicanddilutednetearningspershareTables">
        <link:definition>2354312 - Disclosure - Basic and diluted net earnings per share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasicanddilutednetearningspershareScheduleofEarningsperShareDetail" roleURI="http://www.algonquinpower.com/role/BasicanddilutednetearningspershareScheduleofEarningsperShareDetail">
        <link:definition>2455424 - Disclosure - Basic and diluted net earnings per share - Schedule of Earnings per Share (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasicanddilutednetearningspershareAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/BasicanddilutednetearningspershareAdditionalInformationDetail">
        <link:definition>2456425 - Disclosure - Basic and diluted net earnings per share - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Segmentedinformation" roleURI="http://www.algonquinpower.com/role/Segmentedinformation">
        <link:definition>2157119 - Disclosure - Segmented information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentedinformationTables" roleURI="http://www.algonquinpower.com/role/SegmentedinformationTables">
        <link:definition>2358313 - Disclosure - Segmented information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentedinformationAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/SegmentedinformationAdditionalInformationDetail">
        <link:definition>2459426 - Disclosure - Segmented information - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentedinformationResultsofOperationsandAssetsforSegmentsDetail" roleURI="http://www.algonquinpower.com/role/SegmentedinformationResultsofOperationsandAssetsforSegmentsDetail">
        <link:definition>2460427 - Disclosure - Segmented information - Results of Operations and Assets for Segments (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentedinformationInformationonOperationsbyGeographicAreaDetail" roleURI="http://www.algonquinpower.com/role/SegmentedinformationInformationonOperationsbyGeographicAreaDetail">
        <link:definition>2461428 - Disclosure - Segmented information - Information on Operations by Geographic Area (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Commitmentsandcontingencies" roleURI="http://www.algonquinpower.com/role/Commitmentsandcontingencies">
        <link:definition>2162120 - Disclosure - Commitments and contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandcontingenciesTables" roleURI="http://www.algonquinpower.com/role/CommitmentsandcontingenciesTables">
        <link:definition>2363314 - Disclosure - Commitments and contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandcontingenciesEstimatesofFutureCommitmentsDetail" roleURI="http://www.algonquinpower.com/role/CommitmentsandcontingenciesEstimatesofFutureCommitmentsDetail">
        <link:definition>2464429 - Disclosure - Commitments and contingencies - Estimates of Future Commitments (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Noncashoperatingitems" roleURI="http://www.algonquinpower.com/role/Noncashoperatingitems">
        <link:definition>2165121 - Disclosure - Non-cash operating items</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncashoperatingitemsTables" roleURI="http://www.algonquinpower.com/role/NoncashoperatingitemsTables">
        <link:definition>2366315 - Disclosure - Non-cash operating items (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncashoperatingitemsChangesinNonCashOperatingItemsDetail" roleURI="http://www.algonquinpower.com/role/NoncashoperatingitemsChangesinNonCashOperatingItemsDetail">
        <link:definition>2467430 - Disclosure - Non-cash operating items - Changes in Non-Cash Operating Items (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Financialinstruments" roleURI="http://www.algonquinpower.com/role/Financialinstruments">
        <link:definition>2168122 - Disclosure - Financial instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsTables" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsTables">
        <link:definition>2369316 - Disclosure - Financial instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsFairValueofFinancialInstrumentsDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsFairValueofFinancialInstrumentsDetail">
        <link:definition>2470431 - Disclosure - Financial instruments - Fair Value of Financial Instruments (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsAdditionalInformationDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsAdditionalInformationDetail">
        <link:definition>2471432 - Disclosure - Financial instruments - Additional Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsSummaryofCommodityVolumesAssociatedwithDerivativeContractsDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsSummaryofCommodityVolumesAssociatedwithDerivativeContractsDetail">
        <link:definition>2472433 - Disclosure - Financial instruments - Summary of Commodity Volumes Associated with Derivative Contracts (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsImpactofChangeinFairValueofNaturalGasDerivativeContractsDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsImpactofChangeinFairValueofNaturalGasDerivativeContractsDetail">
        <link:definition>2473434 - Disclosure - Financial instruments - Impact of Change in Fair Value of Natural Gas Derivative Contracts (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsLongtermEnergyDerivativeContractsDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsLongtermEnergyDerivativeContractsDetail">
        <link:definition>2474435 - Disclosure - Financial instruments - Long-term Energy Derivative Contracts (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsDerivativeFinancialInstrumentsDesignatedasCashFlowHedgeEffectonStatementofOperationsDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsDerivativeFinancialInstrumentsDesignatedasCashFlowHedgeEffectonStatementofOperationsDetail">
        <link:definition>2475436 - Disclosure - Financial instruments - Derivative Financial Instruments Designated as Cash Flow Hedge, Effect on Statement of Operations (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsEffectsonStatementofOperationsofDerivativeFinancialInstrumentsNotDesignatedasHedgesDetail" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsEffectsonStatementofOperationsofDerivativeFinancialInstrumentsNotDesignatedasHedgesDetail">
        <link:definition>2476437 - Disclosure - Financial instruments - Effects on Statement of Operations of Derivative Financial Instruments Not Designated as Hedges (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialinstrumentsEffectsonStatementofOperationsofDerivativeFinancialInstrumentsNotDesignatedasHedgesDetail_1" roleURI="http://www.algonquinpower.com/role/FinancialinstrumentsEffectsonStatementofOperationsofDerivativeFinancialInstrumentsNotDesignatedasHedgesDetail_1">
        <link:definition>2476437 - Disclosure - Financial instruments - Effects on Statement of Operations of Derivative Financial Instruments Not Designated as Hedges (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Comparativefigures" roleURI="http://www.algonquinpower.com/role/Comparativefigures">
        <link:definition>2177123 - Disclosure - Comparative figures</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="aqunf_NoteReceivableNameAxis" abstract="true" name="NoteReceivableNameAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_U.S.DollarSeniorUnsecuredUtilityNotesMember" abstract="true" name="U.S.DollarSeniorUnsecuredUtilityNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DividendsLineItems" abstract="true" name="DividendsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_DevelopmentLoansMember" abstract="true" name="DevelopmentLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNoncontrollingInterest" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNoncontrollingInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CashDividendsTextBlock" abstract="false" name="CashDividendsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_OptionsandConvertibleDebenturesMember" abstract="true" name="OptionsandConvertibleDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BonusDeferralRestrictedStockUnitsMember" abstract="true" name="BonusDeferralRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AtlanticaShareSubscriptionAgreementMember" abstract="true" name="AtlanticaShareSubscriptionAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ContractAdjustmentPayments" abstract="false" name="ContractAdjustmentPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DividendandRedemptionPaymentsDiscounted" abstract="false" name="DividendandRedemptionPaymentsDiscounted" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_RevenueNetofRegulatedFuelandPowerPurchased" abstract="false" name="RevenueNetofRegulatedFuelandPowerPurchased" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DisclosureCashDividendsAbstract" abstract="true" name="DisclosureCashDividendsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_RevenueNotFromContractwithCustomerAlternativeRevenueProgram" abstract="false" name="RevenueNotFromContractwithCustomerAlternativeRevenueProgram" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_FourthTexasWindFacilityMember" abstract="true" name="FourthTexasWindFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_VolumeOfEnergyCommodityContractsNaturalGas" abstract="false" name="VolumeOfEnergyCommodityContractsNaturalGas" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:energyItemType"/>
  <xs:element id="aqunf_AtlanticaYieldEnergySolutionsCanadaInc.Member" abstract="true" name="AtlanticaYieldEnergySolutionsCanadaInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DebtPremiumMember" abstract="true" name="DebtPremiumMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_SugarCreekWindFacilityMember" abstract="true" name="SugarCreekWindFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DisclosureLongTermInvestmentsAndNotesReceivableAbstract" abstract="true" name="DisclosureLongTermInvestmentsAndNotesReceivableAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_NonRegulatedEnergyMember" abstract="true" name="NonRegulatedEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BusinessAcquisitionsAndInvestmentsInJointVenturesTextBlock" abstract="false" name="BusinessAcquisitionsAndInvestmentsInJointVenturesTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_SaleOfStockAveragePricePerShare" abstract="false" name="SaleOfStockAveragePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="aqunf_SaleOfStockConsiderationReceivedOnTransactionGross" abstract="false" name="SaleOfStockConsiderationReceivedOnTransactionGross" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_RegulatedElectricityMember" abstract="true" name="RegulatedElectricityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NetIncomeLossAttributabletoNoncontrollingInterestTableTextBlock" abstract="false" name="NetIncomeLossAttributabletoNoncontrollingInterestTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_CostperMegawattHour" abstract="false" name="CostperMegawattHour" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="aqunf_NoncontrollingInterestinPartnershipsandJointVentures" abstract="false" name="NoncontrollingInterestinPartnershipsandJointVentures" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DebtInstrumentIssuedBelowParAmount" abstract="false" name="DebtInstrumentIssuedBelowParAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_PeriodForOptionToPurchaseInterestInJointVenture" abstract="false" name="PeriodForOptionToPurchaseInterestInJointVenture" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="aqunf_NIHUBExpiryDecember2031Member" abstract="true" name="NIHUBExpiryDecember2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_OtherNonoperatingExpenseTextBlock" abstract="false" name="OtherNonoperatingExpenseTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_NorthForkRidgeWindProjectMember" abstract="true" name="NorthForkRidgeWindProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_SanAntonioWaterSystemMember" abstract="true" name="SanAntonioWaterSystemMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DeferredCapitalizedCostsMember" abstract="true" name="DeferredCapitalizedCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DepreciationandAmortizationofOtherExpense" abstract="false" name="DepreciationandAmortizationofOtherExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_SeniorUnsecuredBankCreditFacilitiesMember" abstract="true" name="SeniorUnsecuredBankCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ThirdPartyMember" abstract="true" name="ThirdPartyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_CommitmentsDisclosureTableTextBlock" abstract="false" name="CommitmentsDisclosureTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_TemporaryEquityBeneficialOwnershipInterestPercent" abstract="false" name="TemporaryEquityBeneficialOwnershipInterestPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aqunf_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" abstract="false" name="ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_PublicUtilitiesWeightedAverageCostOfCapital" abstract="false" name="PublicUtilitiesWeightedAverageCostOfCapital" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aqunf_NetIncomeLossAttributableToNoncontrollingInterestNetOfRelatedParty" abstract="false" name="NetIncomeLossAttributableToNoncontrollingInterestNetOfRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_ATMEquityProgramMember" abstract="true" name="ATMEquityProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_TexasWindFarmsMember" abstract="true" name="TexasWindFarmsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NoncontrollingInterestDisposedAmount" abstract="false" name="NoncontrollingInterestDisposedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_SolarPowerCapacity" abstract="false" name="SolarPowerCapacity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_ProceedsfromIssuanceofCommonStockNetofStockIssuanceCosts" abstract="false" name="ProceedsfromIssuanceofCommonStockNetofStockIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_ESSALMember" abstract="true" name="ESSALMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ShareBasedCompensationArrangementByShareBasedPaymentAwardWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="aqunf_RedeemableNoncontrollingInterestEquity" abstract="false" name="RedeemableNoncontrollingInterestEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_RedeemableNonControllingInterestMember" abstract="true" name="RedeemableNonControllingInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DefinedBenefitPlanNonserviceCostsAbstract" abstract="true" name="DefinedBenefitPlanNonserviceCostsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_GaiaPowerInc.vsAPUCMember" abstract="true" name="GaiaPowerInc.vsAPUCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_StockIssuedDuringPeriodValueConversionofSubscriptionReceipts" abstract="false" name="StockIssuedDuringPeriodValueConversionofSubscriptionReceipts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_PublicUtilitiesAdditionalApprovedStepIncreaseDecreaseAmount" abstract="false" name="PublicUtilitiesAdditionalApprovedStepIncreaseDecreaseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_USDollarSeniorUnsecuredNotesGreenEquityUnitsMember" abstract="true" name="USDollarSeniorUnsecuredNotesGreenEquityUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DividendsTable" abstract="true" name="DividendsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_DisclosureOfOtherSignificantNoncashTransactionsTextBlock" abstract="false" name="DisclosureOfOtherSignificantNoncashTransactionsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_VariousMember" abstract="true" name="VariousMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DefinedBenefitPlanAmortizationOfRegulatoryAssetsandLiabilities" abstract="false" name="DefinedBenefitPlanAmortizationOfRegulatoryAssetsandLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_NumberOfWindFarms" abstract="false" name="NumberOfWindFarms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_EquityMethodInvestmentFairValueGainLoss" abstract="false" name="EquityMethodInvestmentFairValueGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_SugarCreekMember" abstract="true" name="SugarCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RedeemableNoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHolders" abstract="false" name="RedeemableNoncontrollingInterestDecreasefromDistributionstoNoncontrollingInterestHolders" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_TemporaryEquityDividendRatePercentage" abstract="false" name="TemporaryEquityDividendRatePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aqunf_NumberOfInterestRateSwapsRedesignatedAsCashFlowHedges" abstract="false" name="NumberOfInterestRateSwapsRedesignatedAsCashFlowHedges" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_FairValueOfFinancialInstrumentsTableTextBlock" abstract="false" name="FairValueOfFinancialInstrumentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_RetiredGeneratingPlantMember" abstract="true" name="RetiredGeneratingPlantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_StockholdersEquityAttributabletoNoncontrollingInterestRelatedParty" abstract="false" name="StockholdersEquityAttributabletoNoncontrollingInterestRelatedParty" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_StockIssuedDuringPeriodSharesDividendReinvestmentAndEmployeeStockPurchasePlan" abstract="false" name="StockIssuedDuringPeriodSharesDividendReinvestmentAndEmployeeStockPurchasePlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aqunf_AscendantMember" abstract="true" name="AscendantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_APUCMember" abstract="true" name="APUCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RSUsAndPSUsMember" abstract="true" name="RSUsAndPSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_InterestRateSwapTwoMember" abstract="true" name="InterestRateSwapTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_CanadianDollarSeniorUnsecuredDebenturesMember" abstract="true" name="CanadianDollarSeniorUnsecuredDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_GenerationMember" abstract="true" name="GenerationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_MaverickCreekWindFacilityMember" abstract="true" name="MaverickCreekWindFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NetIncomeLossAttributabletoNoncontrollingInterestHeldByRelatedParty" abstract="false" name="NetIncomeLossAttributabletoNoncontrollingInterestHeldByRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_OptionToPurchaseInterestInJointVenture" abstract="false" name="OptionToPurchaseInterestInJointVenture" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_U.S.DollarSeniorUnsecuredUtilityBondsMember" abstract="true" name="U.S.DollarSeniorUnsecuredUtilityBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DisposalOfPartialInterestInConsolidatedEntityOwnershipInterestDisposed" abstract="false" name="DisposalOfPartialInterestInConsolidatedEntityOwnershipInterestDisposed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aqunf_ISONESpotRateContractExpiringFebruary2022Member" abstract="true" name="ISONESpotRateContractExpiringFebruary2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AdvancesinAidofConstruction" abstract="false" name="AdvancesinAidofConstruction" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_NIHUBExpiryDecember2027Member" abstract="true" name="NIHUBExpiryDecember2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BusinessCombinationTaxEquityFunding" abstract="false" name="BusinessCombinationTaxEquityFunding" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_U.S.DollarSubordinatedUnsecuredNotesMember" abstract="true" name="U.S.DollarSubordinatedUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AltavistaSolarFacilityMember" abstract="true" name="AltavistaSolarFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_CanadianDollarSeniorUnsecuredNotesMember" abstract="true" name="CanadianDollarSeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RegulatedServicesGroupMember" abstract="true" name="RegulatedServicesGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_CostofFuelandPowerPurchased" abstract="false" name="CostofFuelandPowerPurchased" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_RedeemableNoncontrollingInterestRelatedPartyCarryingAmount" abstract="false" name="RedeemableNoncontrollingInterestRelatedPartyCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_OtherLongTermLiabilities" abstract="false" name="OtherLongTermLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_WindPowerCapacity" abstract="false" name="WindPowerCapacity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetOfCashAndCashEquivalents" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetOfCashAndCashEquivalents" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_RegulatedWaterMember" abstract="true" name="RegulatedWaterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NetIncomeLossfromContinuingOperationsAttributableToCommonStockHoldersBasicAndDiluted" abstract="false" name="NetIncomeLossfromContinuingOperationsAttributableToCommonStockHoldersBasicAndDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_InvestmentsinSignificantPartnershipsandJointVenturesMember" abstract="true" name="InvestmentsinSignificantPartnershipsandJointVenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ReimbursementofExpensesReceivedbyRelatedParties" abstract="false" name="ReimbursementofExpensesReceivedbyRelatedParties" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_ServicesAndSupplyAgreementMember" abstract="true" name="ServicesAndSupplyAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AltavistaMember" abstract="true" name="AltavistaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_DistributionsFromEquityInvestmentsReceived" abstract="false" name="DistributionsFromEquityInvestmentsReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_SharebasedPaymentArrangementSharesWithheldasPaymentfortheExercisePriceandforTaxWithholdingObligation" abstract="false" name="SharebasedPaymentArrangementSharesWithheldasPaymentfortheExercisePriceandforTaxWithholdingObligation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aqunf_OpenCommodityDerivativeContractsTableTextBlock" abstract="false" name="OpenCommodityDerivativeContractsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_ClassAPartnershipUnitsMember" abstract="true" name="ClassAPartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_PaymentstoAcquireOtherAssets.InvestingActivities" abstract="false" name="PaymentstoAcquireOtherAssets.InvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_OtherLongTermInvestmentsAtFairValueMember" abstract="true" name="OtherLongTermInvestmentsAtFairValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AYESCanadaMember" abstract="true" name="AYESCanadaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAssetRetirementObligation" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAssetRetirementObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_InterestRateSwapOneMember" abstract="true" name="InterestRateSwapOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ScheduleOfChangesInFairValueOfDerivativesOnFinancialPositionTableTextBlock" abstract="false" name="ScheduleOfChangesInFairValueOfDerivativesOnFinancialPositionTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_FairValueOfFinancialInstrumentsLineItems" abstract="true" name="FairValueOfFinancialInstrumentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_HookUpFeeLiability" abstract="false" name="HookUpFeeLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DefinedBenefitPlanNonserviceCostsTotal" abstract="false" name="DefinedBenefitPlanNonserviceCostsTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CanadianInvestmentsandSubsidiariesMember" abstract="true" name="CanadianInvestmentsandSubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_TaxesMember" abstract="true" name="TaxesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_PublicUtilitiesApprovedDistributionRevenueIncreaseDecreaseAmount" abstract="false" name="PublicUtilitiesApprovedDistributionRevenueIncreaseDecreaseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_MaverickCreekAndSugarCreekWindFacilitiesMember" abstract="true" name="MaverickCreekAndSugarCreekWindFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_CommitmentsAxis" abstract="true" name="CommitmentsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_PJMWesternHUBExpiryDecember2027Member" abstract="true" name="PJMWesternHUBExpiryDecember2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_InternationalExcludingCanadaMember" abstract="true" name="InternationalExcludingCanadaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ChileanSeniorUnsecuredUtilityNotesMember" abstract="true" name="ChileanSeniorUnsecuredUtilityNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AtlanticaYieldMember" abstract="true" name="AtlanticaYieldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RelatedPartiesMember" abstract="true" name="RelatedPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ProceedsfromNoncontrollingInterestsProductionBased" abstract="false" name="ProceedsfromNoncontrollingInterestsProductionBased" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CommitmentsDisclosureLineItems" abstract="true" name="CommitmentsDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_MidWestWindDevelopmentProjectMember" abstract="true" name="MidWestWindDevelopmentProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ConvertibleDebenturesMember" abstract="true" name="ConvertibleDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_EnergyMember" abstract="true" name="EnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_CollateralShortfallTriggerAsPercentOfMarketValueOfShares" abstract="false" name="CollateralShortfallTriggerAsPercentOfMarketValueOfShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aqunf_NumberOfWindDevelopmentProjects" abstract="false" name="NumberOfWindDevelopmentProjects" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_WeightedAverageNumberOfSharesAbstract" abstract="true" name="WeightedAverageNumberOfSharesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_LongtermInvestmentsFairValue" abstract="false" name="LongtermInvestmentsFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_AssetRetirementAndEnvironmentalObligations" abstract="false" name="AssetRetirementAndEnvironmentalObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_MaverickMember" abstract="true" name="MaverickMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_IncreaseDecreaseinOperatingCapitalContinuingOperations" abstract="false" name="IncreaseDecreaseinOperatingCapitalContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_AbengoaInvestmentsMember" abstract="true" name="AbengoaInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RateCaseCostsMember" abstract="true" name="RateCaseCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_SaleofStockOtherRelatedcosts" abstract="false" name="SaleofStockOtherRelatedcosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_ERCOTNorthHUBExpiryDecember2027Member" abstract="true" name="ERCOTNorthHUBExpiryDecember2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NetIncomeLossAttributableToCommonStockHoldersBasicAndDiluted" abstract="false" name="NetIncomeLossAttributableToCommonStockHoldersBasicAndDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_PublicUtilitiesApprovedStepIncreaseDecreaseAmount" abstract="false" name="PublicUtilitiesApprovedStepIncreaseDecreaseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_OperatingLeasesMember" abstract="true" name="OperatingLeasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_PublicUtilitiesDeferredRevenue" abstract="false" name="PublicUtilitiesDeferredRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_NumberofBusinessUnits" abstract="false" name="NumberofBusinessUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_DeferredShareUnitsMember" abstract="true" name="DeferredShareUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_SaleOfPropertyPlantAndEquipmentIntangibleAssetsAndAccruedLiabilitiesInExchangeOfNoteReceivable" abstract="false" name="SaleOfPropertyPlantAndEquipmentIntangibleAssetsAndAccruedLiabilitiesInExchangeOfNoteReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_EnergyNorthGasSystemMember" abstract="true" name="EnergyNorthGasSystemMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_StockholdersEquityNoteLineItems" abstract="true" name="StockholdersEquityNoteLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_PurchasedPowerMember" abstract="true" name="PurchasedPowerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RevenueNotfromContractwithCustomerHedgingGains" abstract="false" name="RevenueNotfromContractwithCustomerHedgingGains" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_PublicUtilitiesApprovedRevenue" abstract="false" name="PublicUtilitiesApprovedRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DerivativeInstrumentsDesignatedAsCashFlowHedgesActivityDisclosureTableTextBlock" abstract="false" name="DerivativeInstrumentsDesignatedAsCashFlowHedgesActivityDisclosureTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_LongTermInvestmentsAndNotesReceivableDisclosureTextBlock" abstract="false" name="LongTermInvestmentsAndNotesReceivableDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedDerivativeAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedDerivativeAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_InvestmentsinPartnershipsandJointVenturesTableTextBlock" abstract="false" name="InvestmentsinPartnershipsandJointVenturesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_RateAdjustmentMember" abstract="true" name="RateAdjustmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_FairValueOfFinancialInstrumentsTable" abstract="true" name="FairValueOfFinancialInstrumentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_TemporaryEquityPricePerShareIncludedInMaximumSettlementRateCalculation" abstract="false" name="TemporaryEquityPricePerShareIncludedInMaximumSettlementRateCalculation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="aqunf_InvestmentsOtherMember" abstract="true" name="InvestmentsOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_InvestmentTaxCreditsUnamortized" abstract="false" name="InvestmentTaxCreditsUnamortized" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_IllinoisHubExpirySeptember2030Member" abstract="true" name="IllinoisHubExpirySeptember2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AccountsReceivablesTextBlock" abstract="false" name="AccountsReceivablesTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_SouthwesternMissouriWindProjectsMember" abstract="true" name="SouthwesternMissouriWindProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ContingentDevelopmentSupportObligations" abstract="false" name="ContingentDevelopmentSupportObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_ProceedsfromCollectionofPrincipalonDevelopmentLoansReceivable" abstract="false" name="ProceedsfromCollectionofPrincipalonDevelopmentLoansReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_InterestandOtherIncomefromEquityMethodInvestments" abstract="false" name="InterestandOtherIncomefromEquityMethodInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_U.SDollarSeniorUnsecuredNotesMember" abstract="true" name="U.SDollarSeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NumberOfTermLoanFacilities" abstract="false" name="NumberOfTermLoanFacilities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_PaymentstoNoncontrollingInterestsRelatedParty" abstract="false" name="PaymentstoNoncontrollingInterestsRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_RenewableEnergyGroupMember" abstract="true" name="RenewableEnergyGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_SaleOfStockConsiderationReceivedOnTransactionNetofCommissions" abstract="false" name="SaleOfStockConsiderationReceivedOnTransactionNetofCommissions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_TemporaryEquityThresholdAppreciationPricePerShare" abstract="false" name="TemporaryEquityThresholdAppreciationPricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="aqunf_CustomerProgramsMember" abstract="true" name="CustomerProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_StockholdersEquityAttributabletoNoncontrollingInterestThirdParty" abstract="false" name="StockholdersEquityAttributabletoNoncontrollingInterestThirdParty" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DebtInstrumentConvertibleNumberOfTradingDaysIncludedInAveragePriceOfCommonShares" abstract="false" name="DebtInstrumentConvertibleNumberOfTradingDaysIncludedInAveragePriceOfCommonShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_ManagementSuccessionandExecutiveRetirementExpense" abstract="false" name="ManagementSuccessionandExecutiveRetirementExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_SeniorUnsecuredRevolvingCreditFacilitiesMember" abstract="true" name="SeniorUnsecuredRevolvingCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_OtherNoncontrollingInterestMember" abstract="true" name="OtherNoncontrollingInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_TaxCreditCarryforwardIncreaseDecreaseDuringPeriod" abstract="false" name="TaxCreditCarryforwardIncreaseDecreaseDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CapitalProjectsMember" abstract="true" name="CapitalProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_RegulatoryMattersTextBlock" abstract="false" name="RegulatoryMattersTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_TemporaryEquitySharePurchaseContractInterestRate" abstract="false" name="TemporaryEquitySharePurchaseContractInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aqunf_AccrualsAndLongTermDebtPurchaseAccountingAdjustments" abstract="false" name="AccrualsAndLongTermDebtPurchaseAccountingAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_BELCOBermudaMember" abstract="true" name="BELCOBermudaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsWorkingCapital" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsWorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_OtherNonoperatingExpenseRefundofExcessTaxesCollected" abstract="false" name="OtherNonoperatingExpenseRefundofExcessTaxesCollected" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_LongTermInvestmentsandNotesReceivableTableTextBlock" abstract="false" name="LongTermInvestmentsandNotesReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_AdjustmentsToAdditionalPaidInCapitalContractAdjustmentPayments" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalContractAdjustmentPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CommitmentsDisclosureTable" abstract="true" name="CommitmentsDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_RegulatedGasMember" abstract="true" name="RegulatedGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ContractAdjustmentPaymentsAccretionPeriod" abstract="false" name="ContractAdjustmentPaymentsAccretionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="aqunf_EquityMethodInvestmentInterestIncome" abstract="false" name="EquityMethodInvestmentInterestIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_StockholdersEquityNoteTable" abstract="true" name="StockholdersEquityNoteTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAmortizationofCashFlowHedgeafterTax" abstract="false" name="OtherComprehensiveIncomeLossCashFlowHedgeGainLossAmortizationofCashFlowHedgeafterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DerivativeInstrumentsGainLossFrozenduetoHedgeDesignation" abstract="false" name="DerivativeInstrumentsGainLossFrozenduetoHedgeDesignation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_WildfireMitigationAndVegetationManagementMember" abstract="true" name="WildfireMitigationAndVegetationManagementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_OtherRevenueMember" abstract="true" name="OtherRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_HedgeSettlementObligation" abstract="false" name="HedgeSettlementObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_NoteReceivableNameDomain" abstract="true" name="NoteReceivableNameDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_ScheduleOfOtherLongTermLiabilitiesTableTextBlock" abstract="false" name="ScheduleOfOtherLongTermLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_NetIncomeLossAttributabletoRedeemableNoncontrollingInterestHeldByRelatedParty" abstract="false" name="NetIncomeLossAttributabletoRedeemableNoncontrollingInterestHeldByRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DisclosureChangesInNonCashOperatingItemsAbstract" abstract="true" name="DisclosureChangesInNonCashOperatingItemsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aqunf_DividendsandDistributionstoNoncontrollingInterests" abstract="false" name="DividendsandDistributionstoNoncontrollingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_SeniorUnsecuredNotesDueJanuary2029Member" abstract="true" name="SeniorUnsecuredNotesDueJanuary2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_LongtermMaintenanceContractMember" abstract="true" name="LongtermMaintenanceContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_BlueHillWindProjectMember" abstract="true" name="BlueHillWindProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_OtherLongTermLiabilitiesDisclosureTextBlock" abstract="false" name="OtherLongTermLiabilitiesDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_ContractAdjustmentPaymentsExcludingInterest" abstract="false" name="ContractAdjustmentPaymentsExcludingInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CustomerDeposits" abstract="false" name="CustomerDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_DerivativeInstrumentsNotDesignatedAsCashFlowHedgesActivityDisclosureTableTextBlock" abstract="false" name="DerivativeInstrumentsNotDesignatedAsCashFlowHedgesActivityDisclosureTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="aqunf_VariableInterestEntitiesCommitmentsonBehalfofVIE" abstract="false" name="VariableInterestEntitiesCommitmentsonBehalfofVIE" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_CommitmentsDomain" abstract="true" name="CommitmentsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_TreasuryStockAmountReservedForIssuanceUnderThePlan" abstract="false" name="TreasuryStockAmountReservedForIssuanceUnderThePlan" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aqunf_NorthForkRidgeAndKingsPointFacilitiesMember" abstract="true" name="NorthForkRidgeAndKingsPointFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_AmherstIslandWindFacilityMember" abstract="true" name="AmherstIslandWindFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_NumberOfWindDevelopmentProjectsAcquired" abstract="false" name="NumberOfWindDevelopmentProjectsAcquired" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="aqunf_NonregulatedEnergySalesMember" abstract="true" name="NonregulatedEnergySalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_WeightedAveragePotentiallyDilutiveShareOptionsAndAwardsOutstanding" abstract="false" name="WeightedAveragePotentiallyDilutiveShareOptionsAndAwardsOutstanding" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aqunf_CanadianDollarSeniorSecuredProjectsNotesMember" abstract="true" name="CanadianDollarSeniorSecuredProjectsNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aqunf_TemporaryEquityMaximumSettlementRate" abstract="false" name="TemporaryEquityMaximumSettlementRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="aqunf_SeniorUnsecuredDebtMember" abstract="true" name="SeniorUnsecuredDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
