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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019eadd6-75c7-7eac-955d-fb1284b601e6,g:f1cd034f-b8c3-432f-b11a-d97a07e8b2b1-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:basin="http://basinelectric.com/20260331" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://basinelectric.com/20260331">
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.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/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.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="basin-20260331_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="basin-20260331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" 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="basin-20260331_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="basin-20260331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://basinelectric.com/role/CoverPage">
        <link:definition>0000001 - 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="CONSOLIDATEDBALANCESHEETSunaudited" roleURI="http://basinelectric.com/role/CONSOLIDATEDBALANCESHEETSunaudited">
        <link:definition>9952151 - Statement - CONSOLIDATED BALANCE SHEETS (unaudited)</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="CONSOLIDATEDSTATEMENTSOFOPERATIONunaudited" roleURI="http://basinelectric.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONunaudited">
        <link:definition>9952152 - Statement - CONSOLIDATED STATEMENTS OF OPERATION (unaudited)</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="CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEunaudited" roleURI="http://basinelectric.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEunaudited">
        <link:definition>9952153 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited)</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="CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEunauditedParenthetical" roleURI="http://basinelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEunauditedParenthetical">
        <link:definition>9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (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="CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITYunaudited" roleURI="http://basinelectric.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITYunaudited">
        <link:definition>9952155 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (unaudited)</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="CONSOLIDATEDSTATEMENTSOFCASHFLOWSunaudited" roleURI="http://basinelectric.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSunaudited">
        <link:definition>9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)</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="CONSOLIDATEDSTATEMENTSOFOPERATIONunauditedParentheticals" roleURI="http://basinelectric.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONunauditedParentheticals">
        <link:definition>9952157 - Statement - CONSOLIDATED STATEMENTS OF OPERATION (unaudited) (Parentheticals)</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="Organization" roleURI="http://basinelectric.com/role/Organization">
        <link:definition>9952158 - Disclosure - Organization</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="BasisofPresentation" roleURI="http://basinelectric.com/role/BasisofPresentation">
        <link:definition>9952159 - Disclosure - Basis of Presentation</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="NewAccountingPronouncements" roleURI="http://basinelectric.com/role/NewAccountingPronouncements">
        <link:definition>9952160 - Disclosure - New 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="RestrictedandDesignatedCashandInvestments" roleURI="http://basinelectric.com/role/RestrictedandDesignatedCashandInvestments">
        <link:definition>9952161 - Disclosure - Restricted and Designated Cash and 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="SelectedBalanceSheetInformation" roleURI="http://basinelectric.com/role/SelectedBalanceSheetInformation">
        <link:definition>9952162 - Disclosure - Selected Balance Sheet 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="Investments" roleURI="http://basinelectric.com/role/Investments">
        <link:definition>9952163 - Disclosure - 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="DerivativeInstrumentsandHedgingActivities" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivities">
        <link:definition>9952164 - Disclosure - Derivative Instruments and Hedging Activities</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="RegulatoryAssetsandLiabilities" roleURI="http://basinelectric.com/role/RegulatoryAssetsandLiabilities">
        <link:definition>9952165 - Disclosure - Regulatory Assets and 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="AccumulatedOtherComprehensiveIncome" roleURI="http://basinelectric.com/role/AccumulatedOtherComprehensiveIncome">
        <link:definition>9952166 - Disclosure - Accumulated Other 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="LongTermDebtandOtherFinancing" roleURI="http://basinelectric.com/role/LongTermDebtandOtherFinancing">
        <link:definition>9952167 - Disclosure - Long-Term Debt and Other Financing</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="Revenue" roleURI="http://basinelectric.com/role/Revenue">
        <link:definition>9952168 - Disclosure - Revenue</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="EmployeeBenefitPlans" roleURI="http://basinelectric.com/role/EmployeeBenefitPlans">
        <link:definition>9952169 - Disclosure - Employee Benefit Plans</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="AssetsandLiabilitiesMeasuredatFairValue" roleURI="http://basinelectric.com/role/AssetsandLiabilitiesMeasuredatFairValue">
        <link:definition>9952170 - Disclosure - Assets and Liabilities Measured at Fair Value</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="SegmentReporting" roleURI="http://basinelectric.com/role/SegmentReporting">
        <link:definition>9952171 - Disclosure - Segment Reporting</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="CommitmentandContingencies" roleURI="http://basinelectric.com/role/CommitmentandContingencies">
        <link:definition>9952172 - Disclosure - Commitment 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="RelatedPartyTransactions" roleURI="http://basinelectric.com/role/RelatedPartyTransactions">
        <link:definition>9952173 - 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="SubsequentEvents" roleURI="http://basinelectric.com/role/SubsequentEvents">
        <link:definition>9952174 - Disclosure - Subsequent Events</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="BasisofPresentationPolicies" roleURI="http://basinelectric.com/role/BasisofPresentationPolicies">
        <link:definition>9955511 - Disclosure - Basis of Presentation (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="RestrictedandDesignatedCashandInvestmentsTables" roleURI="http://basinelectric.com/role/RestrictedandDesignatedCashandInvestmentsTables">
        <link:definition>9955512 - Disclosure - Restricted and Designated Cash and 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="SelectedBalanceSheetInformationTables" roleURI="http://basinelectric.com/role/SelectedBalanceSheetInformationTables">
        <link:definition>9955513 - Disclosure - Selected Balance Sheet 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="InvestmentsTables" roleURI="http://basinelectric.com/role/InvestmentsTables">
        <link:definition>9955514 - Disclosure - 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="DerivativeInstrumentsandHedgingActivitiesTables" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesTables">
        <link:definition>9955515 - Disclosure - Derivative Instruments and Hedging Activities (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="RegulatoryAssetsandLiabilitiesTables" roleURI="http://basinelectric.com/role/RegulatoryAssetsandLiabilitiesTables">
        <link:definition>9955516 - Disclosure - Regulatory Assets and Liabilities (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="AccumulatedOtherComprehensiveIncomeTables" roleURI="http://basinelectric.com/role/AccumulatedOtherComprehensiveIncomeTables">
        <link:definition>9955517 - Disclosure - Accumulated Other Comprehensive Income (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="LongTermDebtandOtherFinancingTables" roleURI="http://basinelectric.com/role/LongTermDebtandOtherFinancingTables">
        <link:definition>9955518 - Disclosure - Long-Term Debt and Other Financing (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="RevenueTables" roleURI="http://basinelectric.com/role/RevenueTables">
        <link:definition>9955519 - Disclosure - Revenue (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="EmployeeBenefitPlansTables" roleURI="http://basinelectric.com/role/EmployeeBenefitPlansTables">
        <link:definition>9955520 - Disclosure - Employee Benefit Plans (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="AssetsandLiabilitiesMeasuredatFairValueTables" roleURI="http://basinelectric.com/role/AssetsandLiabilitiesMeasuredatFairValueTables">
        <link:definition>9955521 - Disclosure - Assets and Liabilities Measured at Fair Value (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="SegmentReportingTables" roleURI="http://basinelectric.com/role/SegmentReportingTables">
        <link:definition>9955522 - Disclosure - Segment Reporting (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="RelatedPartyTransactionsTables" roleURI="http://basinelectric.com/role/RelatedPartyTransactionsTables">
        <link:definition>9955523 - Disclosure - Related Party Transactions (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="OrganizationDetails" roleURI="http://basinelectric.com/role/OrganizationDetails">
        <link:definition>9955524 - Disclosure - Organization (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="RestrictedandDesignatedCashandInvestmentsScheduleofCashCashEquivalentsandRestrictedandDesignatedCashandCashEquivalentsDetails" roleURI="http://basinelectric.com/role/RestrictedandDesignatedCashandInvestmentsScheduleofCashCashEquivalentsandRestrictedandDesignatedCashandCashEquivalentsDetails">
        <link:definition>9955525 - Disclosure - Restricted and Designated Cash and Investments - Schedule of Cash, Cash Equivalents, and Restricted and Designated Cash and Cash Equivalents (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="RestrictedandDesignatedCashandInvestmentsScheduleofRestrictedandDesignatedInvestmentsDetails" roleURI="http://basinelectric.com/role/RestrictedandDesignatedCashandInvestmentsScheduleofRestrictedandDesignatedInvestmentsDetails">
        <link:definition>9955526 - Disclosure - Restricted and Designated Cash and Investments - Schedule of Restricted and Designated 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="SelectedBalanceSheetInformationInventoriesDetails" roleURI="http://basinelectric.com/role/SelectedBalanceSheetInformationInventoriesDetails">
        <link:definition>9955527 - Disclosure - Selected Balance Sheet Information - Inventories (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="SelectedBalanceSheetInformationCollateralDetails" roleURI="http://basinelectric.com/role/SelectedBalanceSheetInformationCollateralDetails">
        <link:definition>9955528 - Disclosure - Selected Balance Sheet Information - Collateral (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="SelectedBalanceSheetInformationCollateralDetails_1" roleURI="http://basinelectric.com/role/SelectedBalanceSheetInformationCollateralDetails_1">
        <link:definition>9955528 - Disclosure - Selected Balance Sheet Information - Collateral (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="InvestmentsDetails" roleURI="http://basinelectric.com/role/InvestmentsDetails">
        <link:definition>9955529 - Disclosure - 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="InvestmentsNarrativeDetails" roleURI="http://basinelectric.com/role/InvestmentsNarrativeDetails">
        <link:definition>9955530 - Disclosure - Investments - 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="InvestmentsFairValueofAvailableforsaleDebtSecuritiesbyContractedMaturityDateDetails" roleURI="http://basinelectric.com/role/InvestmentsFairValueofAvailableforsaleDebtSecuritiesbyContractedMaturityDateDetails">
        <link:definition>9955531 - Disclosure - Investments - Fair Value of Available-for-sale Debt Securities by Contracted Maturity Date (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="InvestmentsHeldtoMaturityDebtSecuritiesDetails" roleURI="http://basinelectric.com/role/InvestmentsHeldtoMaturityDebtSecuritiesDetails">
        <link:definition>9955532 - Disclosure - Investments - Held to Maturity Debt Securities (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="DerivativeInstrumentsandHedgingActivitiesScheduleofOutstandingHedgeForecastDetails" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesScheduleofOutstandingHedgeForecastDetails">
        <link:definition>9955533 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Outstanding Hedge Forecast (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="DerivativeInstrumentsandHedgingActivitiesNarrativeDetails" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesNarrativeDetails">
        <link:definition>9955534 - Disclosure - Derivative Instruments and Hedging Activities - 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="DerivativeInstrumentsandHedgingActivitiesScheduleofFairValueandClassificationDetails" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesScheduleofFairValueandClassificationDetails">
        <link:definition>9955535 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Fair Value and Classification (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="DerivativeInstrumentsandHedgingActivitiesScheduleofFairValueandClassificationDetails_1" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesScheduleofFairValueandClassificationDetails_1">
        <link:definition>9955535 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Fair Value and Classification (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="DerivativeInstrumentsandHedgingActivitiesScheduleofGainsandLossesandFinancialStatementClassificationDetails" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesScheduleofGainsandLossesandFinancialStatementClassificationDetails">
        <link:definition>9955536 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Gains and Losses and Financial Statement Classification (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="DerivativeInstrumentsandHedgingActivitiesScheduleofGainsandLossesandFinancialStatementClassificationDetails_1" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesScheduleofGainsandLossesandFinancialStatementClassificationDetails_1">
        <link:definition>9955536 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Gains and Losses and Financial Statement Classification (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="DerivativeInstrumentsandHedgingActivitiesClassificationofDerivativesDetails" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesClassificationofDerivativesDetails">
        <link:definition>9955537 - Disclosure - Derivative Instruments and Hedging Activities - Classification of Derivatives (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="DerivativeInstrumentsandHedgingActivitiesSummaryofCommodityDerivativeDetails" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesSummaryofCommodityDerivativeDetails">
        <link:definition>9955538 - Disclosure - Derivative Instruments and Hedging Activities - Summary of Commodity Derivative (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="DerivativeInstrumentsandHedgingActivitiesSummaryofCommodityDerivativeDetails_1" roleURI="http://basinelectric.com/role/DerivativeInstrumentsandHedgingActivitiesSummaryofCommodityDerivativeDetails_1">
        <link:definition>9955538 - Disclosure - Derivative Instruments and Hedging Activities - Summary of Commodity Derivative (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="RegulatoryAssetsandLiabilitiesDetails" roleURI="http://basinelectric.com/role/RegulatoryAssetsandLiabilitiesDetails">
        <link:definition>9955539 - Disclosure - Regulatory Assets and Liabilities (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="AccumulatedOtherComprehensiveIncomeDetails" roleURI="http://basinelectric.com/role/AccumulatedOtherComprehensiveIncomeDetails">
        <link:definition>9955540 - Disclosure - Accumulated Other Comprehensive Income (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="LongTermDebtandOtherFinancingDetails" roleURI="http://basinelectric.com/role/LongTermDebtandOtherFinancingDetails">
        <link:definition>9955541 - Disclosure - Long-Term Debt and Other Financing (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="LongTermDebtandOtherFinancingNarrativeDetails" roleURI="http://basinelectric.com/role/LongTermDebtandOtherFinancingNarrativeDetails">
        <link:definition>9955542 - Disclosure - Long-Term Debt and Other Financing - 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="LongTermDebtandOtherFinancingNotePayableDetails" roleURI="http://basinelectric.com/role/LongTermDebtandOtherFinancingNotePayableDetails">
        <link:definition>9955543 - Disclosure - Long-Term Debt and Other Financing - Note Payable (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="LongTermDebtandOtherFinancingMemberInvestmentProgramDetails" roleURI="http://basinelectric.com/role/LongTermDebtandOtherFinancingMemberInvestmentProgramDetails">
        <link:definition>9955544 - Disclosure - Long-Term Debt and Other Financing - Member Investment Program (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="RevenueDetails" roleURI="http://basinelectric.com/role/RevenueDetails">
        <link:definition>9955545 - Disclosure - Revenue (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="RevenueNarrativeDetails" roleURI="http://basinelectric.com/role/RevenueNarrativeDetails">
        <link:definition>9955546 - Disclosure - Revenue - 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="EmployeeBenefitPlansNarrativeDetails" roleURI="http://basinelectric.com/role/EmployeeBenefitPlansNarrativeDetails">
        <link:definition>9955547 - Disclosure - Employee Benefit Plans - 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="EmployeeBenefitPlansDetails" roleURI="http://basinelectric.com/role/EmployeeBenefitPlansDetails">
        <link:definition>9955548 - Disclosure - Employee Benefit Plans (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="AssetsandLiabilitiesMeasuredatFairValueDetails" roleURI="http://basinelectric.com/role/AssetsandLiabilitiesMeasuredatFairValueDetails">
        <link:definition>9955549 - Disclosure - Assets and Liabilities Measured at Fair Value (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="SegmentReportingNarrativeDetails" roleURI="http://basinelectric.com/role/SegmentReportingNarrativeDetails">
        <link:definition>9955550 - Disclosure - Segment Reporting - 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="SegmentReportingDetails" roleURI="http://basinelectric.com/role/SegmentReportingDetails">
        <link:definition>9955551 - Disclosure - Segment Reporting (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="CommitmentandContingenciesDetails" roleURI="http://basinelectric.com/role/CommitmentandContingenciesDetails">
        <link:definition>9955552 - Disclosure - Commitment and Contingencies (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="RelatedPartyTransactionsNarrativeDetails" roleURI="http://basinelectric.com/role/RelatedPartyTransactionsNarrativeDetails">
        <link:definition>9955553 - Disclosure - Related Party Transactions - 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="RelatedPartyTransactionsDetails" roleURI="http://basinelectric.com/role/RelatedPartyTransactionsDetails">
        <link:definition>9955554 - Disclosure - Related Party Transactions (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="SubsequentEventsDetails" roleURI="http://basinelectric.com/role/SubsequentEventsDetails">
        <link:definition>9955555 - Disclosure - Subsequent Events (Details)</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="basin_PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceExcludingConstructionWorkInProcess" abstract="false" name="PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceExcludingConstructionWorkInProcess" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_OtherAssetsAndInvestmentsAbstract" abstract="true" name="OtherAssetsAndInvestmentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="basin_MineRelatedAssets" abstract="false" name="MineRelatedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_SpecialFunds" abstract="false" name="SpecialFunds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_DeferredChargesAndOtherAbstract" abstract="true" name="DeferredChargesAndOtherAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="basin_PatronageCapital" abstract="false" name="PatronageCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_OtherEquity" abstract="false" name="OtherEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_LongTermDebtAndLeaseObligationExcludingNotesPayable" abstract="false" name="LongTermDebtAndLeaseObligationExcludingNotesPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_SalesMembersMember" abstract="true" name="SalesMembersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DepreciationDepletionAndAmortizationIncludingUtilitiesOperatingExpense" abstract="false" name="DepreciationDepletionAndAmortizationIncludingUtilitiesOperatingExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_InterestChargedDuringConstruction" abstract="false" name="InterestChargedDuringConstruction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_MemberCapitalMember" abstract="true" name="MemberCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_PatronageCapitalMember" abstract="true" name="PatronageCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_OtherEquityMember" abstract="true" name="OtherEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_PatronageCapitalAllocated" abstract="false" name="PatronageCapitalAllocated" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_IncreaseDecreaseInCollateral" abstract="false" name="IncreaseDecreaseInCollateral" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_InterimReportingPolicyPolicyTextBlock" abstract="false" name="InterimReportingPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="basin_ScheduleOfCollateralPostedAtFairValueTableTextBlock" abstract="false" name="ScheduleOfCollateralPostedAtFairValueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="basin_NumberOfWhollyOwnedForProfitSubsidiaries" abstract="false" name="NumberOfWhollyOwnedForProfitSubsidiaries" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="basin_NumberOfWhollyOwnedNotForProfitSubsidiaries" abstract="false" name="NumberOfWhollyOwnedNotForProfitSubsidiaries" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="basin_NemadjiRiverGenerationNRGMember" abstract="true" name="NemadjiRiverGenerationNRGMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_MissouriBasinPowerProjectMBPPMember" abstract="true" name="MissouriBasinPowerProjectMBPPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_LaramieRiverStationMember" abstract="true" name="LaramieRiverStationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_NemadjiTrailEnergyCenterNTECMember" abstract="true" name="NemadjiTrailEnergyCenterNTECMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_JointlyOwnedUtilityPlantGeneratingCapacity" abstract="false" name="JointlyOwnedUtilityPlantGeneratingCapacity" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:powerItemType"/>
  <xs:element id="basin_MissouriBasinPowerProjectOperatingFundMember" abstract="true" name="MissouriBasinPowerProjectOperatingFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DeferredRevenueMember" abstract="true" name="DeferredRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_FundsHeldInTrustForAssetRetirementObligationMember" abstract="true" name="FundsHeldInTrustForAssetRetirementObligationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_AssetsRetirementObligationsMember" abstract="true" name="AssetsRetirementObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_PublicUtilitiesInventoryCoalAndFuelOilMember" abstract="true" name="PublicUtilitiesInventoryCoalAndFuelOilMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_UreaMember" abstract="true" name="UreaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_AmmoniaMember" abstract="true" name="AmmoniaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_AmmoniumSulfateMember" abstract="true" name="AmmoniumSulfateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_LimeAndLimestoneInventoryMember" abstract="true" name="LimeAndLimestoneInventoryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_OtherProductsMember" abstract="true" name="OtherProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_BondMarketFundsMember" abstract="true" name="BondMarketFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_OtherSecuritiesAbstract" abstract="true" name="OtherSecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="basin_OtherSecuritiesFVNICost" abstract="false" name="OtherSecuritiesFVNICost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_OtherSecuritiesFVNIUnrealizedLoss" abstract="false" name="OtherSecuritiesFVNIUnrealizedLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_OtherSecuritiesFVNIUnrealizedGain" abstract="false" name="OtherSecuritiesFVNIUnrealizedGain" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_OtherSecuritiesFVNI" abstract="false" name="OtherSecuritiesFVNI" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_DebtSecuritiesTradingAndEquitySecuritiesUnrealizedGain" abstract="false" name="DebtSecuritiesTradingAndEquitySecuritiesUnrealizedGain" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_DebtSecuritiesTradingAndEquitySecuritiesUnrealizedLoss" abstract="false" name="DebtSecuritiesTradingAndEquitySecuritiesUnrealizedLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_LoanReceivableWeightedAverageInterestRate" abstract="false" name="LoanReceivableWeightedAverageInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="basin_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYear5" abstract="false" name="DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYear5" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_NaturalGasDecember2033Member" abstract="true" name="NaturalGasDecember2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_TarOilDecember2027Member" abstract="true" name="TarOilDecember2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_ElectricityDecember2027Member" abstract="true" name="ElectricityDecember2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DieselJanuary2029Member" abstract="true" name="DieselJanuary2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DeferredGainLossChangeInFairValueOfDerivatives" abstract="false" name="DeferredGainLossChangeInFairValueOfDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_RefinancingFeesMember" abstract="true" name="RefinancingFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_UnrealizedLossOnInterestRateSwapsMember" abstract="true" name="UnrealizedLossOnInterestRateSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_UnrealizedGainOnEquityInvestmentsMember" abstract="true" name="UnrealizedGainOnEquityInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_NetRegulatoryLiabilities" abstract="false" name="NetRegulatoryLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_FirstMortgageBondsMember" abstract="true" name="FirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_FirstMortgageObilgationsMember" abstract="true" name="FirstMortgageObilgationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2006SeriesMember" abstract="true" name="A2006SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2017SeriesMember" abstract="true" name="A2017SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2025SeriesMember" abstract="true" name="A2025SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2005SeriesMember" abstract="true" name="A2005SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2007SeriesMember" abstract="true" name="A2007SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2008SeriesMember" abstract="true" name="A2008SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2009SeriesMember" abstract="true" name="A2009SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2011SeriesMember" abstract="true" name="A2011SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2012SeriesMember" abstract="true" name="A2012SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2015SeriesMember" abstract="true" name="A2015SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2016CoBankNoteMember" abstract="true" name="A2016CoBankNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2016CFCNoteMember" abstract="true" name="A2016CFCNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2022SeriesMember" abstract="true" name="A2022SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2024CoBankNoteMember" abstract="true" name="A2024CoBankNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2024SeriesMember" abstract="true" name="A2024SeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2007And2008NotesMember" abstract="true" name="A2007And2008NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2023NoteMember" abstract="true" name="A2023NoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2025RUSLoanMember" abstract="true" name="A2025RUSLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_EquipmentNotesMember" abstract="true" name="EquipmentNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2019TaxExemptBondsMember" abstract="true" name="A2019TaxExemptBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_OtherDebtMember" abstract="true" name="OtherDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_LongTermDebtCurrentMaturitiesGross" abstract="false" name="LongTermDebtCurrentMaturitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_CommercialPaperRevolvingCreditAgreementMember" abstract="true" name="CommercialPaperRevolvingCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_RevolvingCreditAgreementMember" abstract="true" name="RevolvingCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_A2025TermLoanMember" abstract="true" name="A2025TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_MemberInvestmentProgramMember" abstract="true" name="MemberInvestmentProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_ElectricUtilityMember" abstract="true" name="ElectricUtilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_GasificationMember" abstract="true" name="GasificationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_CoalAndLimestoneOperationsMember" abstract="true" name="CoalAndLimestoneOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_SalesOfElectricityToMembersMember" abstract="true" name="SalesOfElectricityToMembersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_SalesOfElectricityToNonMemberMember" abstract="true" name="SalesOfElectricityToNonMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_SyntheticNaturalGasMember" abstract="true" name="SyntheticNaturalGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_FertilizerAndDEFProductsMember" abstract="true" name="FertilizerAndDEFProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_OtherByproductsMember" abstract="true" name="OtherByproductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_LigniteCoalMember" abstract="true" name="LigniteCoalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_MiscellaneousMember" abstract="true" name="MiscellaneousMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_OtherPostretirementBenefitsContributionsWithdrawals" abstract="false" name="OtherPostretirementBenefitsContributionsWithdrawals" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_CorporateAndGovernmentBondsMember" abstract="true" name="CorporateAndGovernmentBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_SingleCustomerMember" abstract="true" name="SingleCustomerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_NumberOfReportableSegmentsDisclosedByDefinitionFlag" abstract="false" name="NumberOfReportableSegmentsDisclosedByDefinitionFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:booleanItemType"/>
  <xs:element id="basin_UtilitiesOperatingExpenseElectricFuelAndPurchasedPower" abstract="false" name="UtilitiesOperatingExpenseElectricFuelAndPurchasedPower" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="basin_WholesalePowerAgreementMember" abstract="true" name="WholesalePowerAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DakotaGasAndDakotaCoalMember" abstract="true" name="DakotaGasAndDakotaCoalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DakotaGasMember" abstract="true" name="DakotaGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_DakotaCoalMember" abstract="true" name="DakotaCoalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_WaterSupplyMember" abstract="true" name="WaterSupplyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_ProjectAndOtherServicesMember" abstract="true" name="ProjectAndOtherServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_ScreenedCoalMember" abstract="true" name="ScreenedCoalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_TransmissionAndOtherMiscellaneousServicesMember" abstract="true" name="TransmissionAndOtherMiscellaneousServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_FertilizersUreaAndDEFMember" abstract="true" name="FertilizersUreaAndDEFMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_LimeMember" abstract="true" name="LimeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_LimestoneMember" abstract="true" name="LimestoneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="basin_EquityPurchaseAgreementMember" abstract="true" name="EquityPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
