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  <xsd:element id="bkh_GasSupplyContractTerminationMember" name="GasSupplyContractTerminationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_CapitalAdditionRequirementsbytheFERCJointAccessTransmissionTariff" name="CapitalAdditionRequirementsbytheFERCJointAccessTransmissionTariff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="bkh_NettingContractCategoryDomain" name="NettingContractCategoryDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ScheduleOfDefinedBenefitPlansContributionsTableTextBlock" name="ScheduleOfDefinedBenefitPlansContributionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_PublicUtilitiesAmountOfSystemSafetyAndIntegretyRiderMovedToBaseRates" name="PublicUtilitiesAmountOfSystemSafetyAndIntegretyRiderMovedToBaseRates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_CommonCollectiveTrustFixedIncomeFundMember" name="CommonCollectiveTrustFixedIncomeFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BlackHillsRetirementPlanMember" name="BlackHillsRetirementPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_FederalEnergyRegulatoryCommissionFERCMember" name="FederalEnergyRegulatoryCommissionFERCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_AugustFourTwentyTwentyAtmProgramMember" name="AugustFourTwentyTwentyAtmProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_AtTheMarketEquityOfferingProgramAuthorizedAggregateValue" name="AtTheMarketEquityOfferingProgramAuthorizedAggregateValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_SummaryOfAtTheMarkeActivityTableTextBlock" name="SummaryOfAtTheMarkeActivityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_OtherRegulatoryAssetsMember" name="OtherRegulatoryAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_CommonCollectiveTrustEquityFundMember" name="CommonCollectiveTrustEquityFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BlackHillsEnergyColoradoElectricMember" name="BlackHillsEnergyColoradoElectricMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BenefitFromRelievedTCJARelatedLiabilities" name="BenefitFromRelievedTCJARelatedLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_IncomeTaxReconciliationDeductionsFromSaleOfAssets" name="IncomeTaxReconciliationDeductionsFromSaleOfAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_TransportationMember" name="TransportationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DerivativeLiabilitiesCurrentMember" name="DerivativeLiabilitiesCurrentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DeferredIncomeTaxAmortizationMember" name="DeferredIncomeTaxAmortizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_SettlementReachedWithTheRegulatoryAgencyMember" name="SettlementReachedWithTheRegulatoryAgencyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BlackHillsEnergyArkansasGasMember" name="BlackHillsEnergyArkansasGasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DefinedBenefitPlanAssumptionsUsedInCalculatingNetPeriodicBenefitCostExpectedRateofReturnOnAssetsForNextFiscalYear" name="DefinedBenefitPlanAssumptionsUsedInCalculatingNetPeriodicBenefitCostExpectedRateofReturnOnAssetsForNextFiscalYear" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="bkh_DerivativeAssetsCurrentMember" name="DerivativeAssetsCurrentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ExpectedExtensionPeriod" name="ExpectedExtensionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_SettlementTotalOfPlanToProvideTCJAAndStateTaxReformBenefitsToCustomers" name="SettlementTotalOfPlanToProvideTCJAAndStateTaxReformBenefitsToCustomers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_PowerPurchasedMember" name="PowerPurchasedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DefinedBenefitPlanAlternativeInvestmentsFairValueOfPlanAssets" name="DefinedBenefitPlanAlternativeInvestmentsFairValueOfPlanAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="bkh_BondIssuanceCostsMember" name="BondIssuanceCostsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_SouthDakotaElectricMember" name="SouthDakotaElectricMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_JuneSixteenTwentyTwentyThreeAtmProgramMember" name="JuneSixteenTwentyTwentyThreeAtmProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ScheduleofUnitContingentCapacityTableTextBlock" name="ScheduleofUnitContingentCapacityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_PublicUtilitiesAmountOfSystemSafetyAndIntegrityRiderMovedToBaseRatesAndTerminationOfTheSystemSafetyAndIntegrityRider" name="PublicUtilitiesAmountOfSystemSafetyAndIntegrityRiderMovedToBaseRatesAndTerminationOfTheSystemSafetyAndIntegrityRider" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_DebtInstrumentConsolidatedIndebtednessToCapitalizationRatioRequirement" name="DebtInstrumentConsolidatedIndebtednessToCapitalizationRatioRequirement" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="bkh_WyomingElectricMember" name="WyomingElectricMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_NaturalGasDistributionMember" name="NaturalGasDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_PublicUtilitiesNumberOfFormerRidersReplacedWithANewComprehensiveSafetyAndIntegrityRider" name="PublicUtilitiesNumberOfFormerRidersReplacedWithANewComprehensiveSafetyAndIntegrityRider" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_GlobalSettlementAgreementWithKCCStaffAndVariousIntervenorsForAGeneralRateIncreaseAndRenewalOfItsSafetyAndIntegrityRiderMember" name="GlobalSettlementAgreementWithKCCStaffAndVariousIntervenorsForAGeneralRateIncreaseAndRenewalOfItsSafetyAndIntegrityRiderMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ContractSubjecttoMasterNettingArrangementMember" name="ContractSubjecttoMasterNettingArrangementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_WyomingPublicServiceCommissionMember" name="WyomingPublicServiceCommissionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ExternalCustomersMember" name="ExternalCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_CommonCollectiveTrustCashAndCashEquivalentsMember" name="CommonCollectiveTrustCashAndCashEquivalentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_IowaUtilitiesBoardIUBMember" name="IowaUtilitiesBoardIUBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ScheduleOfEmployerContributionToEmployeeBenefitPlansTableTextBlock" name="ScheduleOfEmployerContributionToEmployeeBenefitPlansTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_PublicUtilitiesAmountOfRequestedSystemSafetyAndIntegrityRiderBeMovedToBaseRates" name="PublicUtilitiesAmountOfRequestedSystemSafetyAndIntegrityRiderBeMovedToBaseRates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_BlackHillsEnergyNebraskaGasMember" name="BlackHillsEnergyNebraskaGasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_RateReviewApprovedByRegulatoryAgencyMember" name="RateReviewApprovedByRegulatoryAgencyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_WeightedAverageCostOfCapital" name="WeightedAverageCostOfCapital" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_BlackHillsCorporationMember" name="BlackHillsCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_EmployeeBenefitPlansAndRelatedDeferredTaxesLiabilitiesMember" name="EmployeeBenefitPlansAndRelatedDeferredTaxesLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_OtherMember" name="OtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_FuelPurchasedPowerAndCostOfGasSold" name="FuelPurchasedPowerAndCostOfGasSold" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="bkh_NetPaymentsBorrowingsOfRevolvingCreditFacilityAndCommercialPaperProgram" name="NetPaymentsBorrowingsOfRevolvingCreditFacilityAndCommercialPaperProgram" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="bkh_PublicUtilitiesTermExtensionOfSystemSafteyAndIntegrityRider" name="PublicUtilitiesTermExtensionOfSystemSafteyAndIntegrityRider" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_AnnualRevenueRequirementasRequiredbytheFERCJointAccessTransmissionTariff" name="AnnualRevenueRequirementasRequiredbytheFERCJointAccessTransmissionTariff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_RateReviewFiledwiththeRegulatoryAgencyMember" name="RateReviewFiledwiththeRegulatoryAgencyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_CustomerDepositsandPrepayments" name="CustomerDepositsandPrepayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_AtTheMarketEquityOfferingProgramShareIssuedButNotSettled" name="AtTheMarketEquityOfferingProgramShareIssuedButNotSettled" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="bkh_AuditInformationAbstract" name="AuditInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_AllowanceForFundsUsedDuringConstructionMember" name="AllowanceForFundsUsedDuringConstructionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BlackHillsEnergyKansasGasMember" name="BlackHillsEnergyKansasGasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DefinedContributionPlanCompanyRetirementMember" name="DefinedContributionPlanCompanyRetirementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_FederalEnergyRegulatoryCommissionFERCCommonUseSystemCUSMember" name="FederalEnergyRegulatoryCommissionFERCCommonUseSystemCUSMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DerivativeAssetsNoncurrentMember" name="DerivativeAssetsNoncurrentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_PurchasedGasCostObligationMember" name="PurchasedGasCostObligationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_NumberOfYearsTCJAAndStateTaxReformBenefitsToBeProvideToCustomers" name="NumberOfYearsTCJAAndStateTaxReformBenefitsToBeProvideToCustomers" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_BlackHillsEnergyRockyMountainNaturalGasMember" name="BlackHillsEnergyRockyMountainNaturalGasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_SettlementOfPlanToProvideTCJAAndStateTaxReformBenefitsToCustomersAnnually" name="SettlementOfPlanToProvideTCJAAndStateTaxReformBenefitsToCustomersAnnually" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_SeniorUnsecuredNotesDue2034Member" name="SeniorUnsecuredNotesDue2034Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" name="ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="bkh_WeightedAverageNumberOfSharesOutstandingBasicAndDilutedAbstract" name="WeightedAverageNumberOfSharesOutstandingBasicAndDilutedAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_ArkansasPublicServiceCommissionMember" name="ArkansasPublicServiceCommissionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_DeferredEnergyAndGasCostsMember" name="DeferredEnergyAndGasCostsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017AmountOfDecreasedTaxBenefit" name="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017AmountOfDecreasedTaxBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_AvailableBorrowingCapacity" name="AvailableBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="bkh_ArkansasPublicServiceCommissionAPSCMember" name="ArkansasPublicServiceCommissionAPSCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BlackHillsServiceCompanyMember" name="BlackHillsServiceCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="bkh_BlackHillsWyomingAndWyodakResourcesDevelopmentCorporationMember" name="BlackHillsWyomingAndWyodakResourcesDevelopmentCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
