<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/AssetRetirementObligations" xlink:href="bkh-20191231.xsd#AssetRetirementObligations" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/AssetRetirementObligationsDetails" xlink:href="bkh-20191231.xsd#AssetRetirementObligationsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/AssetRetirementObligationsTables" xlink:href="bkh-20191231.xsd#AssetRetirementObligationsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPolicies" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAccountsReceivableDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesAccountsReceivableDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAccruedLiabilitiesDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesAccruedLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAllowanceForDoubtfulAccountsDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesAllowanceForDoubtfulAccountsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAntiDilutiveSharesDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesAntiDilutiveSharesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesEarningsPerShareDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesEarningsPerShareDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesGoodwillDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesGoodwillDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesInvestmentsDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesInvestmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesMaterialsSuppliesAndFuelDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesMaterialsSuppliesAndFuelDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesRecentlyAdoptedAccountingStandardsDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesRecentlyAdoptedAccountingStandardsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesRegulatoryAssetsAndLiabilitiesDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesRegulatoryAssetsAndLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesScheduleOfIntangibleAssetsDetails" xlink:href="bkh-20191231.xsd#BusinessDescriptionAndSignificantAccountingPoliciesScheduleOfIntangibleAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionPolicies" xlink:href="bkh-20191231.xsd#BusinessDescriptionPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessDescriptionTables" xlink:href="bkh-20191231.xsd#BusinessDescriptionTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformation" xlink:href="bkh-20191231.xsd#BusinessSegmentInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationCapitalExpendituresAndAssetAcquisitionsDetails" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationCapitalExpendituresAndAssetAcquisitionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationInformationRelatingToSegmentsStatementOfIncomeDetails" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationInformationRelatingToSegmentsStatementOfIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationInformationRelatingToSegmentsStatementOfIncomeDetailsCalc2" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationInformationRelatingToSegmentsStatementOfIncomeDetailsCalc2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationIntercompanyPowerPurchaseAgreementDetails" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationIntercompanyPowerPurchaseAgreementDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationPropertyPlantAndEquipmentDetails" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationPropertyPlantAndEquipmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationSegmentAssetsDetails" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationSegmentAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/BusinessSegmentInformationTables" xlink:href="bkh-20191231.xsd#BusinessSegmentInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingencies" xlink:href="bkh-20191231.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesFuturePurchaseAgreementRelatedPartyDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesFuturePurchaseAgreementRelatedPartyDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesManufacturedGasProcessingDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesManufacturedGasProcessingDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPowerPurchaseAgreementRelatedPartyDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesPowerPurchaseAgreementRelatedPartyDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPowerPurchaseAndTransmissionServicesAgreementsDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesPowerPurchaseAndTransmissionServicesAgreementsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPowerSalesAgreementsDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesPowerSalesAgreementsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPurchaseCommitmentDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesPurchaseCommitmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesReclamationLiabilityDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesReclamationLiabilityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesReimbursementAgreementDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesReimbursementAgreementDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesTables" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesUnconditionalPurchaseObligationsDetails" xlink:href="bkh-20191231.xsd#CommitmentsAndContingenciesUnconditionalPurchaseObligationsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedBalanceSheets" xlink:href="bkh-20191231.xsd#ConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:href="bkh-20191231.xsd#ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="bkh-20191231.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:href="bkh-20191231.xsd#ConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:href="bkh-20191231.xsd#ConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfEquity" xlink:href="bkh-20191231.xsd#ConsolidatedStatementsOfEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfIncome" xlink:href="bkh-20191231.xsd#ConsolidatedStatementsOfIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/DiscontinuedOperations" xlink:href="bkh-20191231.xsd#DiscontinuedOperations" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/DiscontinuedOperationsDetails" xlink:href="bkh-20191231.xsd#DiscontinuedOperationsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/DiscontinuedOperationsTables" xlink:href="bkh-20191231.xsd#DiscontinuedOperationsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/DocumentAndEntityInformation" xlink:href="bkh-20191231.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlans" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlans" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansAccumulatedBenefitObligationDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansAccumulatedBenefitObligationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansAccumulatedOtherComprehensiveIncomeDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansAmountsRecognizedInConsolidatedBalanceSheetDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansAmountsRecognizedInConsolidatedBalanceSheetDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansChangesInBenefitObligationDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansChangesInBenefitObligationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansChangesInPlanAssetsDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansChangesInPlanAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansComponentsOfNetPeriodicExpenseDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansComponentsOfNetPeriodicExpenseDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansDefinedBenefitPlansAssumptionsDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansDefinedBenefitPlansAssumptionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansEmployeeBenefitPlansFairValueMeasurementsDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansEmployeeBenefitPlansFairValueMeasurementsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansPlanAssetsAllocationDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansPlanAssetsAllocationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansPlanContributionsDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansPlanContributionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansProjectedBenefitPlanPaymentsDetails" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansProjectedBenefitPlanPaymentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EmployeeBenefitPlansTables" xlink:href="bkh-20191231.xsd#EmployeeBenefitPlansTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/Equity" xlink:href="bkh-20191231.xsd#Equity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityAtTheMarketEquityOfferingProgramDetails" xlink:href="bkh-20191231.xsd#EquityAtTheMarketEquityOfferingProgramDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityDividendReinvestmentAndStockPurchasePlanDetails" xlink:href="bkh-20191231.xsd#EquityDividendReinvestmentAndStockPurchasePlanDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityEquityCompensationPlansDetails" xlink:href="bkh-20191231.xsd#EquityEquityCompensationPlansDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityNoncontrollingInterestInSubsidiaryDetails" xlink:href="bkh-20191231.xsd#EquityNoncontrollingInterestInSubsidiaryDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityPerformanceSharePlanDetails" xlink:href="bkh-20191231.xsd#EquityPerformanceSharePlanDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityPreferredStockDetails" xlink:href="bkh-20191231.xsd#EquityPreferredStockDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityRestrictedStockDetails" xlink:href="bkh-20191231.xsd#EquityRestrictedStockDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityStockOptionsDetails" xlink:href="bkh-20191231.xsd#EquityStockOptionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityTables" xlink:href="bkh-20191231.xsd#EquityTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/EquityUnitsDetails" xlink:href="bkh-20191231.xsd#EquityUnitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueMeasurements" xlink:href="bkh-20191231.xsd#FairValueMeasurements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueMeasurementsBalanceSheetLocationDetails" xlink:href="bkh-20191231.xsd#FairValueMeasurementsBalanceSheetLocationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueMeasurementsBalanceSheetOffsettingDetails" xlink:href="bkh-20191231.xsd#FairValueMeasurementsBalanceSheetOffsettingDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueMeasurementsTables" xlink:href="bkh-20191231.xsd#FairValueMeasurementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueOfFinancialInstruments" xlink:href="bkh-20191231.xsd#FairValueOfFinancialInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueOfFinancialInstrumentsDetails" xlink:href="bkh-20191231.xsd#FairValueOfFinancialInstrumentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/FairValueOfFinancialInstrumentsTables" xlink:href="bkh-20191231.xsd#FairValueOfFinancialInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/Guarantees" xlink:href="bkh-20191231.xsd#Guarantees" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/GuaranteesDetails" xlink:href="bkh-20191231.xsd#GuaranteesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/GuaranteesTables" xlink:href="bkh-20191231.xsd#GuaranteesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxes" xlink:href="bkh-20191231.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesCarryforwardsStateAndForeignTaxCreditsDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesCarryforwardsStateAndForeignTaxCreditsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesCurrentAndDeferredIncomeTaxExpenseBenefitDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesCurrentAndDeferredIncomeTaxExpenseBenefitDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesDeferredIncomeTaxAssetsAndLiabilitiesDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesDeferredIncomeTaxAssetsAndLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesEffectiveTaxRateDifferencesFromStatutoryTaxRatesDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesEffectiveTaxRateDifferencesFromStatutoryTaxRatesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesInterestPenaltiesAndAuditsDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesInterestPenaltiesAndAuditsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesNetOperatingLossCarryforwardsDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesNetOperatingLossCarryforwardsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesReconciliationOfUnrecognizedTaxBenefitsDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesReconciliationOfUnrecognizedTaxBenefitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesTables" xlink:href="bkh-20191231.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesTaxBenefitRelatedToLegalRestructuringDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesTaxBenefitRelatedToLegalRestructuringDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/IncomeTaxesTaxCutAndJobsActDetails" xlink:href="bkh-20191231.xsd#IncomeTaxesTaxCutAndJobsActDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/JointlyOwnedFacilities" xlink:href="bkh-20191231.xsd#JointlyOwnedFacilities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/JointlyOwnedFacilitiesDetails" xlink:href="bkh-20191231.xsd#JointlyOwnedFacilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/JointlyOwnedFacilitiesRelatedPartyDetails" xlink:href="bkh-20191231.xsd#JointlyOwnedFacilitiesRelatedPartyDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/JointlyOwnedFacilitiesTables" xlink:href="bkh-20191231.xsd#JointlyOwnedFacilitiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/Leases" xlink:href="bkh-20191231.xsd#Leases" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LesseeFutureMinimumPaymentsDetails" xlink:href="bkh-20191231.xsd#LesseeFutureMinimumPaymentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LesseeFutureMinimumPaymentsDetailsCalc2" xlink:href="bkh-20191231.xsd#LesseeFutureMinimumPaymentsDetailsCalc2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LesseeLeaseCostsDetails" xlink:href="bkh-20191231.xsd#LesseeLeaseCostsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LesseeSupplementalBalanceSheetInformationDetails" xlink:href="bkh-20191231.xsd#LesseeSupplementalBalanceSheetInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LesseeSupplementalCashFlowInformationDetails" xlink:href="bkh-20191231.xsd#LesseeSupplementalCashFlowInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LesseeWeightedAverageInformationDetails" xlink:href="bkh-20191231.xsd#LesseeWeightedAverageInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LessorDetails" xlink:href="bkh-20191231.xsd#LessorDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LessorFutureMinimumPaymentsDetails" xlink:href="bkh-20191231.xsd#LessorFutureMinimumPaymentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebt" xlink:href="bkh-20191231.xsd#LongTermDebt" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebtAggregateMaturitiesOfLongTermDebtDetails" xlink:href="bkh-20191231.xsd#LongTermDebtAggregateMaturitiesOfLongTermDebtDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebtAmortizationExpenseDetails" xlink:href="bkh-20191231.xsd#LongTermDebtAmortizationExpenseDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebtDebtTransactionsDetails" xlink:href="bkh-20191231.xsd#LongTermDebtDebtTransactionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebtDetails" xlink:href="bkh-20191231.xsd#LongTermDebtDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebtDividendRestrictionsDetails" xlink:href="bkh-20191231.xsd#LongTermDebtDividendRestrictionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/LongTermDebtTables" xlink:href="bkh-20191231.xsd#LongTermDebtTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/NotesPayable" xlink:href="bkh-20191231.xsd#NotesPayable" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/NotesPayableDetails" xlink:href="bkh-20191231.xsd#NotesPayableDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/NotesPayableTables" xlink:href="bkh-20191231.xsd#NotesPayableTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/OperatingLeasesDetails" xlink:href="bkh-20191231.xsd#OperatingLeasesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/OperatingLeasesTables" xlink:href="bkh-20191231.xsd#OperatingLeasesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/OtherComprehensiveIncome" xlink:href="bkh-20191231.xsd#OtherComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/OtherComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails" xlink:href="bkh-20191231.xsd#OtherComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/OtherComprehensiveIncomeDetails" xlink:href="bkh-20191231.xsd#OtherComprehensiveIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/OtherComprehensiveIncomeTables" xlink:href="bkh-20191231.xsd#OtherComprehensiveIncomeTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/PropertyPlantAndEquipment" xlink:href="bkh-20191231.xsd#PropertyPlantAndEquipment" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/PropertyPlantAndEquipmentDetails" xlink:href="bkh-20191231.xsd#PropertyPlantAndEquipmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/PropertyPlantAndEquipmentTables" xlink:href="bkh-20191231.xsd#PropertyPlantAndEquipmentTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/QuarterlyHistoricalDataUnaudited" xlink:href="bkh-20191231.xsd#QuarterlyHistoricalDataUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/QuarterlyHistoricalDataUnauditedDetails" xlink:href="bkh-20191231.xsd#QuarterlyHistoricalDataUnauditedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/QuarterlyHistoricalDataUnauditedTables" xlink:href="bkh-20191231.xsd#QuarterlyHistoricalDataUnauditedTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMatters" xlink:href="bkh-20191231.xsd#RegulatoryMatters" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMattersElectricUtilitiesRegulatoryActivityDetails" xlink:href="bkh-20191231.xsd#RegulatoryMattersElectricUtilitiesRegulatoryActivityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMattersGasPriceDerivativesDetails" xlink:href="bkh-20191231.xsd#RegulatoryMattersGasPriceDerivativesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMattersGasSupplyContractTerminationDetails" xlink:href="bkh-20191231.xsd#RegulatoryMattersGasSupplyContractTerminationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMattersGasUtilitiesRegulatoryActivityDetails" xlink:href="bkh-20191231.xsd#RegulatoryMattersGasUtilitiesRegulatoryActivityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMattersRegulatoryMattersDetails" xlink:href="bkh-20191231.xsd#RegulatoryMattersRegulatoryMattersDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RegulatoryMattersTables" xlink:href="bkh-20191231.xsd#RegulatoryMattersTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/Revenue" xlink:href="bkh-20191231.xsd#Revenue" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RevenueDisaggregationOfRevenueDetails" xlink:href="bkh-20191231.xsd#RevenueDisaggregationOfRevenueDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RevenueTables" xlink:href="bkh-20191231.xsd#RevenueTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RiskManagementActivities" xlink:href="bkh-20191231.xsd#RiskManagementActivities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RiskManagementActivitiesCashFlowHedgesDetails" xlink:href="bkh-20191231.xsd#RiskManagementActivitiesCashFlowHedgesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RiskManagementActivitiesDerivativesNotDesignatedAsHedgeInstrumentsDetails" xlink:href="bkh-20191231.xsd#RiskManagementActivitiesDerivativesNotDesignatedAsHedgeInstrumentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RiskManagementActivitiesTables" xlink:href="bkh-20191231.xsd#RiskManagementActivitiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/RiskManagementActivitiesUtilitiesDetails" xlink:href="bkh-20191231.xsd#RiskManagementActivitiesUtilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/ScheduleOfFairValuesDetails" xlink:href="bkh-20191231.xsd#ScheduleOfFairValuesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/SupplementalCashFlowInformationDetails" xlink:href="bkh-20191231.xsd#SupplementalCashFlowInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/SupplementalCashFlowInformationTables" xlink:href="bkh-20191231.xsd#SupplementalCashFlowInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.blackhillscorp.com/role/SupplementalDisclosureOfCashFlowInformation" xlink:href="bkh-20191231.xsd#SupplementalDisclosureOfCashFlowInformation" xlink:type="simple" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/AssetRetirementObligations" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/AssetRetirementObligationsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/AssetRetirementObligationsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPolicies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAccountsReceivableDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_a2b836a7-cc87-0e4f-38a0-c91a29535622" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_a2b836a7-cc87-0e4f-38a0-c91a29535622" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_1880896c-a101-2cd3-da1e-8ac153fdcab1" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_1880896c-a101-2cd3-da1e-8ac153fdcab1" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_CustomerDepositsandPrepayments" xlink:label="loc_bkh_CustomerDepositsandPrepayments_752b4bba-af51-a30c-f548-0c12df0cabb5" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:to="loc_bkh_CustomerDepositsandPrepayments_752b4bba-af51-a30c-f548-0c12df0cabb5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_44d274ec-089d-7b00-4cf5-06d0b5a846fb" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:to="loc_us-gaap_InterestPayableCurrent_44d274ec-089d-7b00-4cf5-06d0b5a846fb" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContributionsInAidOfConstruction" xlink:label="loc_us-gaap_ContributionsInAidOfConstruction_8cb054a5-5af5-4e6e-e17a-cfb3b434c24b" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:to="loc_us-gaap_ContributionsInAidOfConstruction_8cb054a5-5af5-4e6e-e17a-cfb3b434c24b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_fa7787c9-a33c-d084-bb97-5e2455f77a4c" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_fa7787c9-a33c-d084-bb97-5e2455f77a4c" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAllowanceForDoubtfulAccountsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesAntiDilutiveSharesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_8c9389ea-1fbb-7e45-ce1f-5a1d89572c0d" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_fbdbb03d-8583-701f-d6e2-69f8229c6051" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_8c9389ea-1fbb-7e45-ce1f-5a1d89572c0d" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_fbdbb03d-8583-701f-d6e2-69f8229c6051" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements_57e51541-4f8c-176d-fdba-f7c44f7f63a3" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_8c9389ea-1fbb-7e45-ce1f-5a1d89572c0d" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements_57e51541-4f8c-176d-fdba-f7c44f7f63a3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_90854703-859b-2c45-aef2-d270627b3141" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_8c9389ea-1fbb-7e45-ce1f-5a1d89572c0d" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_90854703-859b-2c45-aef2-d270627b3141" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesGoodwillDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesInvestmentsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesMaterialsSuppliesAndFuelDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_cc720f44-4c90-5acc-2e7e-b88e80f2af28" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryRawMaterialsAndSupplies" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSupplies_cf6e76a2-6a1c-7043-0e35-c206ef3cfd02" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_cc720f44-4c90-5acc-2e7e-b88e80f2af28" xlink:to="loc_us-gaap_InventoryRawMaterialsAndSupplies_cf6e76a2-6a1c-7043-0e35-c206ef3cfd02" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnergyRelatedInventoryOtherFossilFuel" xlink:label="loc_us-gaap_EnergyRelatedInventoryOtherFossilFuel_d5367c2c-e375-fc81-464d-d39c9f33150d" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_cc720f44-4c90-5acc-2e7e-b88e80f2af28" xlink:to="loc_us-gaap_EnergyRelatedInventoryOtherFossilFuel_d5367c2c-e375-fc81-464d-d39c9f33150d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnergyRelatedInventoryNaturalGasInStorage" xlink:label="loc_us-gaap_EnergyRelatedInventoryNaturalGasInStorage_0372ddb7-8a59-6b58-393d-18681da3b7f3" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_cc720f44-4c90-5acc-2e7e-b88e80f2af28" xlink:to="loc_us-gaap_EnergyRelatedInventoryNaturalGasInStorage_0372ddb7-8a59-6b58-393d-18681da3b7f3" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesRecentlyAdoptedAccountingStandardsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesRegulatoryAssetsAndLiabilitiesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionAndSignificantAccountingPoliciesScheduleOfIntangibleAssetsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionPolicies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessDescriptionTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformation" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationCapitalExpendituresAndAssetAcquisitionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationInformationRelatingToSegmentsStatementOfIncomeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_e170ce1e-c3a8-e8ee-88b0-37e8dd7b1d11" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_e170ce1e-c3a8-e8ee-88b0-37e8dd7b1d11" xlink:to="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a3a6becb-cb5c-3f3c-51b9-6edd8011ed69" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_e170ce1e-c3a8-e8ee-88b0-37e8dd7b1d11" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a3a6becb-cb5c-3f3c-51b9-6edd8011ed69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_8db01d6d-ae17-523f-94b9-8ab4add4a22e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_OperatingIncomeLoss_8db01d6d-ae17-523f-94b9-8ab4add4a22e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_16e9f6a6-5524-a7b1-7e7c-73ee97610ec6" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_InterestExpense_16e9f6a6-5524-a7b1-7e7c-73ee97610ec6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetImpairmentCharges" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_bac55e94-c67c-640e-6602-ce642aa02fe7" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_bac55e94-c67c-640e-6602-ce642aa02fe7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_28fe77ae-e122-e428-d718-aff2ad445bc8" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_28fe77ae-e122-e428-d718-aff2ad445bc8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationInformationRelatingToSegmentsStatementOfIncomeDetailsCalc2" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationIntercompanyPowerPurchaseAgreementDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationPropertyPlantAndEquipmentDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationSegmentAssetsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/BusinessSegmentInformationTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingencies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesFuturePurchaseAgreementRelatedPartyDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesManufacturedGasProcessingDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPowerPurchaseAgreementRelatedPartyDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPowerPurchaseAndTransmissionServicesAgreementsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPowerSalesAgreementsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesPurchaseCommitmentDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesReclamationLiabilityDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesReimbursementAgreementDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/CommitmentsAndContingenciesUnconditionalPurchaseObligationsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_17ef3f41-42f7-52c0-cba1-93e7e0e1116a" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_17ef3f41-42f7-52c0-cba1-93e7e0e1116a" xlink:to="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_1de780cc-9607-daa3-0bed-03c88ae94769" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_1de780cc-9607-daa3-0bed-03c88ae94769" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndInvestmentsCurrent" xlink:label="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_278ccd4a-38f9-4650-32b0-c9920ed62309" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_278ccd4a-38f9-4650-32b0-c9920ed62309" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_dd2cbe99-77d2-db20-3c91-750589881c79" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_dd2cbe99-77d2-db20-3c91-750589881c79" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_cc720f44-4c90-5acc-2e7e-b88e80f2af28" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_InventoryNet_cc720f44-4c90-5acc-2e7e-b88e80f2af28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_280a1859-524b-2b72-b4d6-98ab38afc46a" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_280a1859-524b-2b72-b4d6-98ab38afc46a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:label="loc_us-gaap_IncomeTaxesReceivable_2dc645b8-e4db-c2c1-6eef-744beea03995" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_IncomeTaxesReceivable_2dc645b8-e4db-c2c1-6eef-744beea03995" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_c8cb8d88-1201-7ab6-8e7b-6277be49ec79" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_c8cb8d88-1201-7ab6-8e7b-6277be49ec79" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_7832082e-fa39-48cc-a655-249c101debf9" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0b3bd361-d592-2906-279e-2682647fdd27" xlink:to="loc_us-gaap_OtherAssetsCurrent_7832082e-fa39-48cc-a655-249c101debf9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermInvestments" xlink:label="loc_us-gaap_LongTermInvestments_81aff716-bdf5-d622-e5a1-514839b6b4b2" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_17ef3f41-42f7-52c0-cba1-93e7e0e1116a" xlink:to="loc_us-gaap_LongTermInvestments_81aff716-bdf5-d622-e5a1-514839b6b4b2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_4246ec24-1a4c-19dd-57c9-32d4a8e0cbaa" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_17ef3f41-42f7-52c0-cba1-93e7e0e1116a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_4246ec24-1a4c-19dd-57c9-32d4a8e0cbaa" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_94cd7971-9d17-1c6e-6642-d4d38fb682b6" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_4246ec24-1a4c-19dd-57c9-32d4a8e0cbaa" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_94cd7971-9d17-1c6e-6642-d4d38fb682b6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7b7a3a8d-eb3d-0c85-68cc-b3d4d184ff23" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_4246ec24-1a4c-19dd-57c9-32d4a8e0cbaa" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7b7a3a8d-eb3d-0c85-68cc-b3d4d184ff23" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_f67fcce5-0907-0480-badf-d52a9a392ba6" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_17ef3f41-42f7-52c0-cba1-93e7e0e1116a" xlink:to="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_f67fcce5-0907-0480-badf-d52a9a392ba6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_37b440e2-656c-b624-0688-b7cf681bf981" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_f67fcce5-0907-0480-badf-d52a9a392ba6" xlink:to="loc_us-gaap_Goodwill_37b440e2-656c-b624-0688-b7cf681bf981" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8889606b-88fa-2d5e-3fb9-238bccdf9597" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_f67fcce5-0907-0480-badf-d52a9a392ba6" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8889606b-88fa-2d5e-3fb9-238bccdf9597" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryAssetsNoncurrent" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_4d3d1d45-fa86-b9f3-bf84-d7684e41eb29" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_f67fcce5-0907-0480-badf-d52a9a392ba6" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_4d3d1d45-fa86-b9f3-bf84-d7684e41eb29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_bd8545de-cfc2-6f31-bff6-ed0d4012c357" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_f67fcce5-0907-0480-badf-d52a9a392ba6" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_bd8545de-cfc2-6f31-bff6-ed0d4012c357" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_d7f1ad03-6ed4-706a-15fc-eae794dee33a" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d7f1ad03-6ed4-706a-15fc-eae794dee33a" xlink:to="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_9c889623-7b4f-c89a-bbb3-2bc9fb9ad9f5" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:to="loc_us-gaap_AccountsPayableCurrent_9c889623-7b4f-c89a-bbb3-2bc9fb9ad9f5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_c90cf113-b51b-4312-22d0-4adb9883d309" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_c2051fc9-6e3c-3055-fde4-401ea0dbd57b" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_c2051fc9-6e3c-3055-fde4-401ea0dbd57b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryLiabilityCurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_b5e77ee0-3a1a-cc85-1e77-cd6ccdaced26" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_b5e77ee0-3a1a-cc85-1e77-cd6ccdaced26" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_fbad1c71-c688-bf79-7c97-4a7fcf9b1e62" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:to="loc_us-gaap_ShortTermBorrowings_fbad1c71-c688-bf79-7c97-4a7fcf9b1e62" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_4909d223-7980-3e65-3e19-5f45ac16b538" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_30dca50d-a7bd-cff0-949a-3d7ae869c50d" xlink:to="loc_us-gaap_LongTermDebtCurrent_4909d223-7980-3e65-3e19-5f45ac16b538" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_aa2e73c1-d03e-7f76-3502-7a650f99607c" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d7f1ad03-6ed4-706a-15fc-eae794dee33a" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_aa2e73c1-d03e-7f76-3502-7a650f99607c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_7b08ecc6-4569-4368-6472-43958c8fbd47" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d7f1ad03-6ed4-706a-15fc-eae794dee33a" xlink:to="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_7b08ecc6-4569-4368-6472-43958c8fbd47" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_64993a75-9b0c-349a-1011-cc5a81c58412" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_7b08ecc6-4569-4368-6472-43958c8fbd47" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_64993a75-9b0c-349a-1011-cc5a81c58412" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryLiabilityNoncurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_413934ef-609d-c68a-b4da-893fd82a7f6e" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_7b08ecc6-4569-4368-6472-43958c8fbd47" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_413934ef-609d-c68a-b4da-893fd82a7f6e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_540758d9-5c85-d758-1cf1-4856b8f457a3" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_7b08ecc6-4569-4368-6472-43958c8fbd47" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_540758d9-5c85-d758-1cf1-4856b8f457a3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_8c850143-cd0c-0f85-9038-e19d8c4f7808" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_7b08ecc6-4569-4368-6472-43958c8fbd47" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_8c850143-cd0c-0f85-9038-e19d8c4f7808" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_4d934b0d-59bc-ae5c-ffb9-b6ced82ff9f8" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d7f1ad03-6ed4-706a-15fc-eae794dee33a" xlink:to="loc_us-gaap_CommitmentsAndContingencies_4d934b0d-59bc-ae5c-ffb9-b6ced82ff9f8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_2605fa18-bbd8-c7d7-35fc-aace43a8c019" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d7f1ad03-6ed4-706a-15fc-eae794dee33a" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_2605fa18-bbd8-c7d7-35fc-aace43a8c019" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_2605fa18-bbd8-c7d7-35fc-aace43a8c019" xlink:to="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_f05ab245-2bd1-7865-e7ed-1461a5a6155f" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:to="loc_us-gaap_CommonStockValue_f05ab245-2bd1-7865-e7ed-1461a5a6155f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital_3d5a0ca6-0f59-67e6-adb5-6aecd22b693b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:to="loc_us-gaap_AdditionalPaidInCapital_3d5a0ca6-0f59-67e6-adb5-6aecd22b693b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_62305d8f-d807-0fe8-d0ab-f2c2b3d03011" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_62305d8f-d807-0fe8-d0ab-f2c2b3d03011" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_e6069c8d-dfec-45ff-4b3f-643d125d5b29" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:to="loc_us-gaap_TreasuryStockValue_e6069c8d-dfec-45ff-4b3f-643d125d5b29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_988c1346-b444-a867-fe80-f3aec1443d54" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b9904d8-8624-0dbb-a949-29ff2cf808a8" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_988c1346-b444-a867-fe80-f3aec1443d54" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncontrollingInterestInVariableInterestEntity" xlink:label="loc_us-gaap_NoncontrollingInterestInVariableInterestEntity_00123984-890a-cf1f-fe5e-f3ec74530cc1" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_2605fa18-bbd8-c7d7-35fc-aace43a8c019" xlink:to="loc_us-gaap_NoncontrollingInterestInVariableInterestEntity_00123984-890a-cf1f-fe5e-f3ec74530cc1" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_834a7bf3-d1ec-a251-04d2-cec093e0f492" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ce0d7b63-a366-bc9b-79e1-780981e428fe" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_834a7bf3-d1ec-a251-04d2-cec093e0f492" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ce0d7b63-a366-bc9b-79e1-780981e428fe" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ce0d7b63-a366-bc9b-79e1-780981e428fe" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_ebef248a-da21-637d-9d28-3d42ff90e8e2" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_ebef248a-da21-637d-9d28-3d42ff90e8e2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_c839a0d8-dfea-e1a5-fc91-ef95e7aed9cb" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_c839a0d8-dfea-e1a5-fc91-ef95e7aed9cb" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetImpairmentCharges" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_bac55e94-c67c-640e-6602-ce642aa02fe7" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_bac55e94-c67c-640e-6602-ce642aa02fe7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_f0b9d825-b0b9-37fd-4d25-9294a8598890" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_ShareBasedCompensation_f0b9d825-b0b9-37fd-4d25-9294a8598890" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3421bed6-296e-da4e-f0e9-a2a8fa1f6d19" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3421bed6-296e-da4e-f0e9-a2a8fa1f6d19" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitExpense" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_caee9ccc-a095-4927-db57-f665e8ec303e" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_caee9ccc-a095-4927-db57-f665e8ec303e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_269710de-43ea-f1a2-1ab7-8a2fad8bcd72" xlink:type="locator" />
    <link:calculationArc order="8" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_269710de-43ea-f1a2-1ab7-8a2fad8bcd72" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_f2b34f8d-2445-12ee-2c68-fa0c5409d5e0" xlink:type="locator" />
    <link:calculationArc order="9" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_f2b34f8d-2445-12ee-2c68-fa0c5409d5e0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets_02fc6e58-aaee-7c65-8b1c-d009b6e22677" xlink:type="locator" />
    <link:calculationArc order="10" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets_02fc6e58-aaee-7c65-8b1c-d009b6e22677" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_b85ea94a-c4eb-a977-b009-50c05654207d" xlink:type="locator" />
    <link:calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_b85ea94a-c4eb-a977-b009-50c05654207d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherRegulatoryAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_bde00ba1-a4c2-c0a1-04a5-a97987c9b266" xlink:type="locator" />
    <link:calculationArc order="12" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherRegulatoryAssets_bde00ba1-a4c2-c0a1-04a5-a97987c9b266" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInRegulatoryLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryLiabilities_553ef7e7-e585-b24e-712b-75c0ad1ccb20" xlink:type="locator" />
    <link:calculationArc order="13" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryLiabilities_553ef7e7-e585-b24e-712b-75c0ad1ccb20" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionContributions" xlink:label="loc_us-gaap_PensionContributions_31ede9a2-1562-7f9c-68d9-1054ea43a772" xlink:type="locator" />
    <link:calculationArc order="14" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_PensionContributions_31ede9a2-1562-7f9c-68d9-1054ea43a772" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_2d3aea93-0685-7648-d025-abd4b91cbb46" xlink:type="locator" />
    <link:calculationArc order="15" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_dce89b76-d03f-c578-1259-1af05326f597" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_2d3aea93-0685-7648-d025-abd4b91cbb46" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_e29cccf8-6a61-25e9-e8d3-3b5943366ab7" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_ce0d7b63-a366-bc9b-79e1-780981e428fe" xlink:to="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_e29cccf8-6a61-25e9-e8d3-3b5943366ab7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0f07a806-a2da-6d18-a7a9-d734fad1f3b0" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_834a7bf3-d1ec-a251-04d2-cec093e0f492" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0f07a806-a2da-6d18-a7a9-d734fad1f3b0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_13138e45-c75e-315a-fbed-91178d2e9c45" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0f07a806-a2da-6d18-a7a9-d734fad1f3b0" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_13138e45-c75e-315a-fbed-91178d2e9c45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_0f8df60b-841f-6df5-83c3-e4049d366459" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_13138e45-c75e-315a-fbed-91178d2e9c45" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_0f8df60b-841f-6df5-83c3-e4049d366459" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireOtherInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireOtherInvestments_483713d8-e500-be9d-d173-6b5e26416fef" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_13138e45-c75e-315a-fbed-91178d2e9c45" xlink:to="loc_us-gaap_PaymentsToAcquireOtherInvestments_483713d8-e500-be9d-d173-6b5e26416fef" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_b5cf64b6-8899-5a9a-328a-4f0a312ae378" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_13138e45-c75e-315a-fbed-91178d2e9c45" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_b5cf64b6-8899-5a9a-328a-4f0a312ae378" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_e111fd52-55a9-1e5b-27cb-a2ceb9143e39" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0f07a806-a2da-6d18-a7a9-d734fad1f3b0" xlink:to="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_e111fd52-55a9-1e5b-27cb-a2ceb9143e39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_834a7bf3-d1ec-a251-04d2-cec093e0f492" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="loc_us-gaap_PaymentsOfDividends_97b2cb74-f62e-ba8a-3953-eb9af3cfb8a4" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_PaymentsOfDividends_97b2cb74-f62e-ba8a-3953-eb9af3cfb8a4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_0f0975d6-8500-76a0-c74f-5d2f0ed8b620" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_0f0975d6-8500-76a0-c74f-5d2f0ed8b620" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_12c0685e-44b3-8fd2-2b79-15793d0fdbbe" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_12c0685e-44b3-8fd2-2b79-15793d0fdbbe" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_f58bb86e-8b52-c30f-7b3a-554d3e73586f" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_f58bb86e-8b52-c30f-7b3a-554d3e73586f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_50c96d39-6558-6bd8-b3d6-7ed1c558807e" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_50c96d39-6558-6bd8-b3d6-7ed1c558807e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToMinorityShareholders" xlink:label="loc_us-gaap_PaymentsToMinorityShareholders_e7dfe01f-f85d-50a3-e5ae-55f159760a1f" xlink:type="locator" />
    <link:calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_PaymentsToMinorityShareholders_e7dfe01f-f85d-50a3-e5ae-55f159760a1f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_3ddd0290-3d1a-2e62-5161-428d280d3fb6" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1efd93c0-bb90-2a64-a997-3a70afaa3faa" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_3ddd0290-3d1a-2e62-5161-428d280d3fb6" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_5c8b3520-1ca2-0a91-0912-70d62831826c" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_c4761fa8-dc2a-e270-4b5c-921deca83ad0" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_5c8b3520-1ca2-0a91-0912-70d62831826c" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_c4761fa8-dc2a-e270-4b5c-921deca83ad0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_c4761fa8-dc2a-e270-4b5c-921deca83ad0" xlink:to="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_c4761fa8-dc2a-e270-4b5c-921deca83ad0" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_ba7b0a82-7436-a1c7-4ea1-f9cfba446571" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_ba7b0a82-7436-a1c7-4ea1-f9cfba446571" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax_df0933e2-a33e-3666-9cd2-fde54f4b3ac4" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax_df0933e2-a33e-3666-9cd2-fde54f4b3ac4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_a741faa1-5881-0aa6-7740-3629eebde762" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_a741faa1-5881-0aa6-7740-3629eebde762" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_a23e58d8-03ff-d497-68bb-7ce38cd79d90" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_a23e58d8-03ff-d497-68bb-7ce38cd79d90" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_93de04c3-ace0-a2f0-c272-f037b3709822" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_93de04c3-ace0-a2f0-c272-f037b3709822" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax_397a475b-0af5-f3eb-f91e-9518c9a0cfd9" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1ed26a82-dd4b-490f-d61a-b04c5d44793e" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax_397a475b-0af5-f3eb-f91e-9518c9a0cfd9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a3a6becb-cb5c-3f3c-51b9-6edd8011ed69" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_5c8b3520-1ca2-0a91-0912-70d62831826c" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_a3a6becb-cb5c-3f3c-51b9-6edd8011ed69" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfEquity" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ConsolidatedStatementsOfIncome" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_e170ce1e-c3a8-e8ee-88b0-37e8dd7b1d11" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic_b45adac4-17c9-b704-20c0-18c6dbef07f5" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_e170ce1e-c3a8-e8ee-88b0-37e8dd7b1d11" xlink:to="loc_us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic_b45adac4-17c9-b704-20c0-18c6dbef07f5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_e170ce1e-c3a8-e8ee-88b0-37e8dd7b1d11" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_a0c542a3-925c-dbca-caae-b45f1a51036d" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_9296eff8-e0bf-16cc-fa86-f1b0968a0982" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareDiluted_a0c542a3-925c-dbca-caae-b45f1a51036d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_9296eff8-e0bf-16cc-fa86-f1b0968a0982" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_676e5c7d-beab-c0d8-be00-bb5a9211e90b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareDiluted_a0c542a3-925c-dbca-caae-b45f1a51036d" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_676e5c7d-beab-c0d8-be00-bb5a9211e90b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_d71649eb-5769-933d-7982-2a2ada9ea257" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_d71649eb-5769-933d-7982-2a2ada9ea257" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_8db01d6d-ae17-523f-94b9-8ab4add4a22e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_d71649eb-5769-933d-7982-2a2ada9ea257" xlink:to="loc_us-gaap_OperatingIncomeLoss_8db01d6d-ae17-523f-94b9-8ab4add4a22e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_8db01d6d-ae17-523f-94b9-8ab4add4a22e" xlink:to="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_FuelPurchasedPowerAndCostOfGasSold" xlink:label="loc_bkh_FuelPurchasedPowerAndCostOfGasSold_01643372-d352-44c6-40fd-0c12df4e4390" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:to="loc_bkh_FuelPurchasedPowerAndCostOfGasSold_01643372-d352-44c6-40fd-0c12df4e4390" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_OperatingExpenseMaintenanceOperationsandOtherCostsandExpense" xlink:label="loc_bkh_OperatingExpenseMaintenanceOperationsandOtherCostsandExpense_7a5f1fa9-3d1b-fdb9-be2a-0c12dfc13a7a" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:to="loc_bkh_OperatingExpenseMaintenanceOperationsandOtherCostsandExpense_7a5f1fa9-3d1b-fdb9-be2a-0c12dfc13a7a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_ebef248a-da21-637d-9d28-3d42ff90e8e2" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_ebef248a-da21-637d-9d28-3d42ff90e8e2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TaxesExcludingIncomeAndExciseTaxes" xlink:label="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_9579d6d5-5d13-45f4-354f-cf7b6f16f33d" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:to="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_9579d6d5-5d13-45f4-354f-cf7b6f16f33d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_a1db5b73-77b3-883e-5b3a-b422419e43e3" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_56807cce-1c23-b2ed-01fd-e029fa0d6e79" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_a1db5b73-77b3-883e-5b3a-b422419e43e3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_425ada39-f194-a279-47ac-dd09cf899fb1" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_8db01d6d-ae17-523f-94b9-8ab4add4a22e" xlink:to="loc_us-gaap_Revenues_425ada39-f194-a279-47ac-dd09cf899fb1" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_TotalOtherIncomeExpense" xlink:label="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_d71649eb-5769-933d-7982-2a2ada9ea257" xlink:to="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestCostsIncurred" xlink:label="loc_us-gaap_InterestCostsIncurred_3c729eac-6c85-afc0-4d59-fd4a59f53f48" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:to="loc_us-gaap_InterestCostsIncurred_3c729eac-6c85-afc0-4d59-fd4a59f53f48" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized" xlink:label="loc_bkh_PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized_67012db9-ead8-156e-2b51-0c12e2653d8f" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:to="loc_bkh_PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized_67012db9-ead8-156e-2b51-0c12e2653d8f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="loc_us-gaap_InvestmentIncomeInterest_d1f3a8d2-a9eb-dfaa-d8d8-e9a2b8c4ce0c" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:to="loc_us-gaap_InvestmentIncomeInterest_d1f3a8d2-a9eb-dfaa-d8d8-e9a2b8c4ce0c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_0974c497-926c-2e41-dde7-64f2bbc461f8" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_0974c497-926c-2e41-dde7-64f2bbc461f8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetImpairmentCharges" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_bac55e94-c67c-640e-6602-ce642aa02fe7" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_bac55e94-c67c-640e-6602-ce642aa02fe7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_7a3a9730-2927-590e-4e76-6aeb4157256e" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_TotalOtherIncomeExpense_74cdff9c-d5ec-a053-07d0-0c12dfe31524" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_7a3a9730-2927-590e-4e76-6aeb4157256e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1f42c682-c9cf-1de0-1230-a353dc469675" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:type="arc" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_8b582348-a62e-cdfb-bc53-d5894b42e091" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_43102e24-b009-a823-41c0-3a851b53c822" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_b083e9ce-7a31-bc71-2302-34551814cc46" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareBasic_43102e24-b009-a823-41c0-3a851b53c822" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_b083e9ce-7a31-bc71-2302-34551814cc46" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_1171ed8b-abcc-2118-a17f-95d9a80be5ae" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareBasic_43102e24-b009-a823-41c0-3a851b53c822" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_1171ed8b-abcc-2118-a17f-95d9a80be5ae" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/DiscontinuedOperations" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/DiscontinuedOperationsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:type="locator" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_DisposalGroupIncludingDiscontinuedOperationsInterestIncomeExpenseNet" xlink:label="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsInterestIncomeExpenseNet_113c70de-d525-ff3f-8a0c-0c12df2a1a49" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:to="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsInterestIncomeExpenseNet_113c70de-d525-ff3f-8a0c-0c12df2a1a49" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_DisposalGroupIncludingDiscontinuedOperationsOtherIncomeExpensenet" xlink:label="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsOtherIncomeExpensenet_0638f917-208e-cdd3-a292-0c12e0bdb864" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:to="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsOtherIncomeExpensenet_0638f917-208e-cdd3-a292-0c12e0bdb864" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_6a929962-55c4-d534-dec1-e59d6078d631" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_6a929962-55c4-d534-dec1-e59d6078d631" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_2cb57b64-3960-ae86-1cdd-5040bfa702a2" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_d9787bcc-e26a-e14e-b8ed-b82e68531cea" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_2cb57b64-3960-ae86-1cdd-5040bfa702a2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_736da35c-11e9-6d9d-3b67-e466dbe67859" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_2cb57b64-3960-ae86-1cdd-5040bfa702a2" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_736da35c-11e9-6d9d-3b67-e466dbe67859" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses" xlink:label="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses_aec66651-09fb-bb00-b2af-0c12e26fcac0" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_2cb57b64-3960-ae86-1cdd-5040bfa702a2" xlink:to="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses_aec66651-09fb-bb00-b2af-0c12e26fcac0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_f89887dd-c132-b4fa-9515-8b798d91998e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses_aec66651-09fb-bb00-b2af-0c12e26fcac0" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_f89887dd-c132-b4fa-9515-8b798d91998e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_7323ff5e-f201-929f-9cf3-a8e044d46e45" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses_aec66651-09fb-bb00-b2af-0c12e26fcac0" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_7323ff5e-f201-929f-9cf3-a8e044d46e45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization_e54a6b0d-abda-1988-2d10-f7de1f32cccc" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses_aec66651-09fb-bb00-b2af-0c12e26fcac0" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization_e54a6b0d-abda-1988-2d10-f7de1f32cccc" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_DisposalGroupIncludingDiscontinuedOperationsImpairmentofLonglivedAssets" xlink:label="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsImpairmentofLonglivedAssets_995a88e5-0576-8f62-05df-0c12dfb965fc" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsTotalOperatingExpenses_aec66651-09fb-bb00-b2af-0c12e26fcac0" xlink:to="loc_bkh_DisposalGroupIncludingDiscontinuedOperationsImpairmentofLonglivedAssets_995a88e5-0576-8f62-05df-0c12dfb965fc" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/DiscontinuedOperationsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlans" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansAccumulatedBenefitObligationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_39b41dd7-e18e-f7b7-a9b1-8d77b8bbb39c" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax_a7e7c196-0b16-8ef2-04f9-be19de085fc7" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_39b41dd7-e18e-f7b7-a9b1-8d77b8bbb39c" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax_a7e7c196-0b16-8ef2-04f9-be19de085fc7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax_48c99ab0-53fe-d3dc-e3b0-6074dc6e4977" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_39b41dd7-e18e-f7b7-a9b1-8d77b8bbb39c" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax_48c99ab0-53fe-d3dc-e3b0-6074dc6e4977" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTaxCutsandJobsActof2017ReclassificationfromAOCItoRetainedEarnings" xlink:label="loc_bkh_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTaxCutsandJobsActof2017ReclassificationfromAOCItoRetainedEarnings_05b385a0-4c37-d15b-c8b0-0c12e25d993d" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_39b41dd7-e18e-f7b7-a9b1-8d77b8bbb39c" xlink:to="loc_bkh_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTaxCutsandJobsActof2017ReclassificationfromAOCItoRetainedEarnings_05b385a0-4c37-d15b-c8b0-0c12e25d993d" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanReclassificationtoRegulatoryLiabilities" xlink:label="loc_bkh_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanReclassificationtoRegulatoryLiabilities_222b7a66-8122-839c-72ed-0c12df1fad64" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_39b41dd7-e18e-f7b7-a9b1-8d77b8bbb39c" xlink:to="loc_bkh_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanReclassificationtoRegulatoryLiabilities_222b7a66-8122-839c-72ed-0c12df1fad64" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansAmountsRecognizedInConsolidatedBalanceSheetDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansChangesInBenefitObligationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansChangesInPlanAssetsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansComponentsOfNetPeriodicExpenseDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_d77fe029-f23f-9e6c-6011-e5f759449bed" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_e14243b3-33a1-5459-a451-077ec8d3f8e3" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_d77fe029-f23f-9e6c-6011-e5f759449bed" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_e14243b3-33a1-5459-a451-077ec8d3f8e3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_08bfb8dd-9b96-b2df-e96d-3661802234df" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_d77fe029-f23f-9e6c-6011-e5f759449bed" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_08bfb8dd-9b96-b2df-e96d-3661802234df" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_65f7f8a8-89d5-6dc6-d223-452e554561e4" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_d77fe029-f23f-9e6c-6011-e5f759449bed" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_65f7f8a8-89d5-6dc6-d223-452e554561e4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_6bc5232c-ca32-47e4-f9fd-2a89043cd46b" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_d77fe029-f23f-9e6c-6011-e5f759449bed" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_6bc5232c-ca32-47e4-f9fd-2a89043cd46b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_0d8fe3ab-8638-f17a-d512-2baaf0d8fce2" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_d77fe029-f23f-9e6c-6011-e5f759449bed" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_0d8fe3ab-8638-f17a-d512-2baaf0d8fce2" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansDefinedBenefitPlansAssumptionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansEmployeeBenefitPlansFairValueMeasurementsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansPlanAssetsAllocationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansPlanContributionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansProjectedBenefitPlanPaymentsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EmployeeBenefitPlansTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/Equity" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityAtTheMarketEquityOfferingProgramDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityDividendReinvestmentAndStockPurchasePlanDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityEquityCompensationPlansDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityNoncontrollingInterestInSubsidiaryDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityPerformanceSharePlanDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityPreferredStockDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityRestrictedStockDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityStockOptionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/EquityUnitsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueMeasurements" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueMeasurementsBalanceSheetLocationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueMeasurementsBalanceSheetOffsettingDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_c498d065-e002-c8b0-aba8-6aaec8302ba7" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_0078bdbb-290f-5ef0-62d2-056ec95a2492" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilities_c498d065-e002-c8b0-aba8-6aaec8302ba7" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_0078bdbb-290f-5ef0-62d2-056ec95a2492" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset" xlink:label="loc_us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset_8a9ac5d9-0075-eee6-1f2a-29bb0ac1a3cd" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilities_c498d065-e002-c8b0-aba8-6aaec8302ba7" xlink:to="loc_us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset_8a9ac5d9-0075-eee6-1f2a-29bb0ac1a3cd" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_05d1a9f5-40b5-5876-afca-b2b8e7f078c9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_6cb66114-bf63-d028-2d01-3d66f917fa7d" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssets_05d1a9f5-40b5-5876-afca-b2b8e7f078c9" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_6cb66114-bf63-d028-2d01-3d66f917fa7d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeCollateralObligationToReturnCash" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnCash_1647c165-45eb-9e3d-2908-911d1880235e" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssets_05d1a9f5-40b5-5876-afca-b2b8e7f078c9" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnCash_1647c165-45eb-9e3d-2908-911d1880235e" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueMeasurementsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueOfFinancialInstruments" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueOfFinancialInstrumentsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/FairValueOfFinancialInstrumentsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/Guarantees" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/GuaranteesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/GuaranteesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxes" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesCarryforwardsStateAndForeignTaxCreditsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesCurrentAndDeferredIncomeTaxExpenseBenefitDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3421bed6-296e-da4e-f0e9-a2a8fa1f6d19" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3421bed6-296e-da4e-f0e9-a2a8fa1f6d19" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_db02e614-93e7-eddf-abe0-a58cca48e685" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3421bed6-296e-da4e-f0e9-a2a8fa1f6d19" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_db02e614-93e7-eddf-abe0-a58cca48e685" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_ca5c17e6-16a0-bee8-1413-d316d82a8942" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3421bed6-296e-da4e-f0e9-a2a8fa1f6d19" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_ca5c17e6-16a0-bee8-1413-d316d82a8942" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_ad87dc87-7206-5d76-a1ae-6cecdf90521c" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_666ca9f0-28f1-b21a-025e-36222808a6c3" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_ad87dc87-7206-5d76-a1ae-6cecdf90521c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_1007d9fe-6d83-c6c6-eef9-c29803b14ec7" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_ad87dc87-7206-5d76-a1ae-6cecdf90521c" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_1007d9fe-6d83-c6c6-eef9-c29803b14ec7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_7f37ab3b-992e-e1ba-f578-2c503524d7e4" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_ad87dc87-7206-5d76-a1ae-6cecdf90521c" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_7f37ab3b-992e-e1ba-f578-2c503524d7e4" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesDeferredIncomeTaxAssetsAndLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities_f31cb66e-0de8-54fb-4788-53b3cde0ec2f" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_f31cb66e-0de8-54fb-4788-53b3cde0ec2f" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities" xlink:label="loc_us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities_b51f6bd0-a4dd-da02-b416-93502f121a0e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities_b51f6bd0-a4dd-da02-b416-93502f121a0e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther_2d1c8ed9-b097-b87a-4ac4-efe9a659cbff" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther_2d1c8ed9-b097-b87a-4ac4-efe9a659cbff" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_bc5d002e-802f-bf1e-7d7d-9f1d1a7551a7" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_bc5d002e-802f-bf1e-7d7d-9f1d1a7551a7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal_19f9d05f-2c58-37fa-8ed6-50f05acd87f4" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal_19f9d05f-2c58-37fa-8ed6-50f05acd87f4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsInvestments" xlink:label="loc_us-gaap_DeferredTaxAssetsInvestments_8238b72a-9466-2c8c-af2e-800965722912" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsInvestments_8238b72a-9466-2c8c-af2e-800965722912" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_9fd2e560-0aac-aea4-6be8-8b4e4e77d184" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_9fd2e560-0aac-aea4-6be8-8b4e4e77d184" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_a87b79d6-1ed8-a71d-1843-5c0769713f28" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_a87b79d6-1ed8-a71d-1843-5c0769713f28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_55b78dfc-faa8-3c71-752a-e6857318d516" xlink:type="locator" />
    <link:calculationArc order="8" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_e6f5d9f5-2430-5e17-896c-5e4d69815366" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_55b78dfc-faa8-3c71-752a-e6857318d516" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_f31cb66e-0de8-54fb-4788-53b3cde0ec2f" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_fee9ac69-74b7-a6ae-6ad8-e6860d7cdb9d" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_fee9ac69-74b7-a6ae-6ad8-e6860d7cdb9d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesRegulatoryAssets" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssets_7f86c22d-a8ce-1e6a-4ba4-2a3e717d856b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssets_7f86c22d-a8ce-1e6a-4ba4-2a3e717d856b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_d9790b98-8593-494e-d277-e049ae0ae286" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_d9790b98-8593-494e-d277-e049ae0ae286" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_DeferredTaxLiabilityState" xlink:label="loc_bkh_DeferredTaxLiabilityState_8a7a0c51-3654-3ccb-ae00-0c12e0a71a39" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:to="loc_bkh_DeferredTaxLiabilityState_8a7a0c51-3654-3ccb-ae00-0c12e0a71a39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_4c5a1085-469a-cd6c-e26f-53287b62aa26" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_15e17ec2-d527-455f-b2cd-0be7f92a9fd5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_4c5a1085-469a-cd6c-e26f-53287b62aa26" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesEffectiveTaxRateDifferencesFromStatutoryTaxRatesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_5ef0c8c5-04c5-1c10-a59e-3eaa9cf923b4" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_5ef0c8c5-04c5-1c10-a59e-3eaa9cf923b4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_fa285cf0-c43f-6ef0-a0f2-c37d958f2fe4" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_fa285cf0-c43f-6ef0-a0f2-c37d958f2fe4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense_767e897c-eed7-ea2b-0b6f-40469e787255" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense_767e897c-eed7-ea2b-0b6f-40469e787255" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits_760e1cd1-b180-e0c4-17a8-eef24284a1cb" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits_760e1cd1-b180-e0c4-17a8-eef24284a1cb" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_EffectiveIncomeTaxRateReconciliationFlowThroughAccounting" xlink:label="loc_bkh_EffectiveIncomeTaxRateReconciliationFlowThroughAccounting_6061ed52-5af5-9da4-9330-0c12dea8863d" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_bkh_EffectiveIncomeTaxRateReconciliationFlowThroughAccounting_6061ed52-5af5-9da4-9330-0c12dea8863d" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_EffectiveIncomeTaxReconciliationduetoRestructuring" xlink:label="loc_bkh_EffectiveIncomeTaxReconciliationduetoRestructuring_9e4939da-de0e-0895-0e6e-0c12e29b267d" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_bkh_EffectiveIncomeTaxReconciliationduetoRestructuring_9e4939da-de0e-0895-0e6e-0c12e29b267d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_c16a0eb3-02da-6ea0-91e7-3203372f71fd" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_c16a0eb3-02da-6ea0-91e7-3203372f71fd" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_dde8ff73-3704-2d19-f167-45cf9c0efbb7" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_dde8ff73-3704-2d19-f167-45cf9c0efbb7" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_EffectiveIncomeTaxReconciliationAmortizationOfExcessDeferredIncomeTaxExpense" xlink:label="loc_bkh_EffectiveIncomeTaxReconciliationAmortizationOfExcessDeferredIncomeTaxExpense_A8294F3972EDA2854A0316C451933583" xlink:type="locator" />
    <link:calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_aa9fb8cf-e50d-6d5b-0236-a084fee29894" xlink:to="loc_bkh_EffectiveIncomeTaxReconciliationAmortizationOfExcessDeferredIncomeTaxExpense_A8294F3972EDA2854A0316C451933583" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesInterestPenaltiesAndAuditsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesNetOperatingLossCarryforwardsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesReconciliationOfUnrecognizedTaxBenefitsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesTaxBenefitRelatedToLegalRestructuringDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/IncomeTaxesTaxCutAndJobsActDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/JointlyOwnedFacilities" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/JointlyOwnedFacilitiesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/JointlyOwnedFacilitiesRelatedPartyDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/JointlyOwnedFacilitiesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/Leases" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LesseeFutureMinimumPaymentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_48abcf97-737b-2b2c-8a8c-c74539d0b215" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_48abcf97-737b-2b2c-8a8c-c74539d0b215" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_9b040bc1-f43c-735d-05f7-679f319d2bb6" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_9b040bc1-f43c-735d-05f7-679f319d2bb6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_2f0ec234-4f20-7099-efb3-3c0ab4d024dd" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_2f0ec234-4f20-7099-efb3-3c0ab4d024dd" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1ed751b1-5f94-4f6f-41e9-ef873c9f2bab" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1ed751b1-5f94-4f6f-41e9-ef873c9f2bab" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8a8de21f-aadc-3af7-8c96-d54cf42b401b" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8a8de21f-aadc-3af7-8c96-d54cf42b401b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_b411eec9-2a0a-356b-e751-bd0680ab4d58" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_b411eec9-2a0a-356b-e751-bd0680ab4d58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_56214e92-975b-87e2-d6f8-a5f1e857c6ef" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_56214e92-975b-87e2-d6f8-a5f1e857c6ef" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_9048fd47-13cc-d6eb-d7dd-e8d53f87b993" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_9048fd47-13cc-d6eb-d7dd-e8d53f87b993" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_c4c9d759-d9f6-eec5-3320-115ed3ebdd52" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_c4c9d759-d9f6-eec5-3320-115ed3ebdd52" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_48ac7df5-3392-98b1-a73f-b2f41673ff75" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_48ac7df5-3392-98b1-a73f-b2f41673ff75" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_c21c69f2-c329-91b2-f24a-9debaed02565" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_c21c69f2-c329-91b2-f24a-9debaed02565" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_80ad803a-a5b3-2c23-a7a0-aed644e501db" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_80ad803a-a5b3-2c23-a7a0-aed644e501db" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsDue" xlink:label="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:type="locator" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsRemainderofFiscalYear" xlink:label="loc_bkh_LeaseLiabilityPaymentsRemainderofFiscalYear_1a30bfa2-94aa-d086-161b-0c12df476170" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityPaymentsRemainderofFiscalYear_1a30bfa2-94aa-d086-161b-0c12df476170" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_bkh_LeaseLiabilityPaymentsDueYearTwo_24e9a784-fc3f-19f4-0c0d-0c12e234acd8" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityPaymentsDueYearTwo_24e9a784-fc3f-19f4-0c0d-0c12e234acd8" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsDueYearThree" xlink:label="loc_bkh_LeaseLiabilityPaymentsDueYearThree_0f19ed78-ce01-4144-699f-0c12dff2c149" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityPaymentsDueYearThree_0f19ed78-ce01-4144-699f-0c12dff2c149" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsDueYearFour" xlink:label="loc_bkh_LeaseLiabilityPaymentsDueYearFour_f820f8cb-bad0-8289-b604-0c12e07ab040" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityPaymentsDueYearFour_f820f8cb-bad0-8289-b604-0c12e07ab040" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsDueYearFive" xlink:label="loc_bkh_LeaseLiabilityPaymentsDueYearFive_3d6dede1-50b4-36b4-3add-0c12deb3cf1c" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityPaymentsDueYearFive_3d6dede1-50b4-36b4-3add-0c12deb3cf1c" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsAfterYearFive" xlink:label="loc_bkh_LeaseLiabilityPaymentsAfterYearFive_5aa771bc-2c6e-c0f3-8a74-0c12e0c45663" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityPaymentsAfterYearFive_5aa771bc-2c6e-c0f3-8a74-0c12e0c45663" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4cf71329-74d6-54f3-cadb-acb7f1063f36" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4cf71329-74d6-54f3-cadb-acb7f1063f36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_f2a573e7-27e5-db11-63c6-c460733b5ea3" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_f2a573e7-27e5-db11-63c6-c460733b5ea3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_398384fb-b756-b11a-1ea4-5a5cd4372c82" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_398384fb-b756-b11a-1ea4-5a5cd4372c82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_832fb73d-9886-a0dd-5905-8e2ec54304d6" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_832fb73d-9886-a0dd-5905-8e2ec54304d6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_1f2c68db-a374-1412-5f1f-4edca1431bbb" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_1f2c68db-a374-1412-5f1f-4edca1431bbb" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_e71cbb67-0324-15b7-66dc-376e90f3ca60" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_acfb1bbb-4a5b-18c4-ab71-d62ae0aecfa0" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_e71cbb67-0324-15b7-66dc-376e90f3ca60" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LesseeFutureMinimumPaymentsDetailsCalc2" xlink:type="extended">
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityPaymentsDue" xlink:label="loc_bkh_LeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:type="locator" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_bkh_LeaseLiabilityUndiscountedExcessAmount_BB7776C6ED08F60B97E50D2152F2FA64_c8edcd19-15c4-b4e7-c094-0c12e2b53b5c" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiabilityUndiscountedExcessAmount_BB7776C6ED08F60B97E50D2152F2FA64_c8edcd19-15c4-b4e7-c094-0c12e2b53b5c" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_LeaseLiability" xlink:label="loc_bkh_LeaseLiability_BB7776C6ED08F60B97E50D2152F2FA64_af75c78c-2cfc-a1cb-ccab-0c12deb1cefb" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_LeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_70294c4c-23d4-1c42-e9e9-0c12df41cfbc" xlink:to="loc_bkh_LeaseLiability_BB7776C6ED08F60B97E50D2152F2FA64_af75c78c-2cfc-a1cb-ccab-0c12deb1cefb" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_BB7776C6ED08F60B97E50D2152F2FA64_597d60ca-96f9-eb25-df87-2ed201ea93c3" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_BB7776C6ED08F60B97E50D2152F2FA64_597d60ca-96f9-eb25-df87-2ed201ea93c3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_BB7776C6ED08F60B97E50D2152F2FA64_66b601d4-fa3f-7d40-f560-84d87697ff03" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_585156c8-71c1-ada7-fa32-ec99a518c7a0" xlink:to="loc_us-gaap_FinanceLeaseLiability_BB7776C6ED08F60B97E50D2152F2FA64_66b601d4-fa3f-7d40-f560-84d87697ff03" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_BB7776C6ED08F60B97E50D2152F2FA64_07815ffa-512a-3133-dcbb-38e09d2626b9" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_BB7776C6ED08F60B97E50D2152F2FA64_07815ffa-512a-3133-dcbb-38e09d2626b9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_BB7776C6ED08F60B97E50D2152F2FA64_b983c2d8-8318-0a7e-1a5c-6ab2933f7be5" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_BB7776C6ED08F60B97E50D2152F2FA64_1c2cd15f-6a97-015f-b126-1d0a0750698b" xlink:to="loc_us-gaap_OperatingLeaseLiability_BB7776C6ED08F60B97E50D2152F2FA64_b983c2d8-8318-0a7e-1a5c-6ab2933f7be5" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LesseeLeaseCostsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseCost" xlink:label="loc_us-gaap_LeaseCost_ac3b1889-9651-365f-e4fc-e6474385db69" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaap_OperatingLeaseCost_88d5ba82-39dd-36ed-37fe-92977ff632df" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_ac3b1889-9651-365f-e4fc-e6474385db69" xlink:to="loc_us-gaap_OperatingLeaseCost_88d5ba82-39dd-36ed-37fe-92977ff632df" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_e6bc46d1-fec7-6b3b-527e-4ad756896790" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_ac3b1889-9651-365f-e4fc-e6474385db69" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_e6bc46d1-fec7-6b3b-527e-4ad756896790" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseInterestExpense" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_a4a8e3bb-2ee6-a2f3-d86b-f05bd98679a7" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_ac3b1889-9651-365f-e4fc-e6474385db69" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_a4a8e3bb-2ee6-a2f3-d86b-f05bd98679a7" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LesseeSupplementalBalanceSheetInformationDetails" xlink:type="extended">
    <link:loc xlink:href="bkh-20191231.xsd#bkh_OperatingandFinanceLeaseLiabilities" xlink:label="loc_bkh_OperatingandFinanceLeaseLiabilities_6280aa65-d0eb-fd2d-d4b6-0c12e2bf64fe" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_b91d2f01-85c2-f9fb-3250-26a4b1b39c5e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_OperatingandFinanceLeaseLiabilities_6280aa65-d0eb-fd2d-d4b6-0c12e2bf64fe" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_b91d2f01-85c2-f9fb-3250-26a4b1b39c5e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_c7d469db-1829-81a3-8e6c-82df6bd6f6bf" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_OperatingandFinanceLeaseLiabilities_6280aa65-d0eb-fd2d-d4b6-0c12e2bf64fe" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_c7d469db-1829-81a3-8e6c-82df6bd6f6bf" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_d18f979c-644d-9e92-9e89-21cfd1312948" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_OperatingandFinanceLeaseLiabilities_6280aa65-d0eb-fd2d-d4b6-0c12e2bf64fe" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_d18f979c-644d-9e92-9e89-21cfd1312948" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_362d72d3-5e94-ebab-8f86-75d06c8c7ee4" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_OperatingandFinanceLeaseLiabilities_6280aa65-d0eb-fd2d-d4b6-0c12e2bf64fe" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_362d72d3-5e94-ebab-8f86-75d06c8c7ee4" xlink:type="arc" />
    <link:loc xlink:href="bkh-20191231.xsd#bkh_OperatingandFinanceLeaseAssets" xlink:label="loc_bkh_OperatingandFinanceLeaseAssets_deb1a1b9-88c3-582a-d845-0c12df852124" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_dcf3df0d-2155-35f6-715d-83a9bc9cf3fb" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_OperatingandFinanceLeaseAssets_deb1a1b9-88c3-582a-d845-0c12df852124" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_dcf3df0d-2155-35f6-715d-83a9bc9cf3fb" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_69276cd8-bc14-59c0-d638-5bf78fc9d77e" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bkh_OperatingandFinanceLeaseAssets_deb1a1b9-88c3-582a-d845-0c12df852124" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_69276cd8-bc14-59c0-d638-5bf78fc9d77e" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LesseeSupplementalCashFlowInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LesseeWeightedAverageInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LessorDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LessorFutureMinimumPaymentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_9005984b-f9f3-7e07-ef97-4312f239321c" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_9005984b-f9f3-7e07-ef97-4312f239321c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_2c3ecb96-369b-ef88-2076-3cdf583520ec" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_2c3ecb96-369b-ef88-2076-3cdf583520ec" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_2a6d5eb4-62af-e9bb-12b9-93fd54a3267f" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_2a6d5eb4-62af-e9bb-12b9-93fd54a3267f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_3e3a1252-0cfd-16d3-8d22-4bd8701af99f" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_3e3a1252-0cfd-16d3-8d22-4bd8701af99f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_70609221-dde8-f48b-0e0f-c35287333ce1" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_70609221-dde8-f48b-0e0f-c35287333ce1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_95d5cc2c-b689-8832-5113-752a79261cb4" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_e38e688f-e3df-720c-72b2-4d22e2221470" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_95d5cc2c-b689-8832-5113-752a79261cb4" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebt" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebtAggregateMaturitiesOfLongTermDebtDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebtAmortizationExpenseDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebtDebtTransactionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebtDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebtDividendRestrictionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/LongTermDebtTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/NotesPayable" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/NotesPayableDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/NotesPayableTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/OperatingLeasesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/OperatingLeasesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/OtherComprehensiveIncome" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/OtherComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/OtherComprehensiveIncomeDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/OtherComprehensiveIncomeTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/PropertyPlantAndEquipment" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/PropertyPlantAndEquipmentDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/PropertyPlantAndEquipmentTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/QuarterlyHistoricalDataUnaudited" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/QuarterlyHistoricalDataUnauditedDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/QuarterlyHistoricalDataUnauditedTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMatters" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMattersElectricUtilitiesRegulatoryActivityDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMattersGasPriceDerivativesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMattersGasSupplyContractTerminationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMattersGasUtilitiesRegulatoryActivityDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMattersRegulatoryMattersDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryAssets" xlink:label="loc_us-gaap_RegulatoryAssets_5c5a2f02-4fbe-b22a-35f7-da2080b8bcac" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_c8cb8d88-1201-7ab6-8e7b-6277be49ec79" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RegulatoryAssets_5c5a2f02-4fbe-b22a-35f7-da2080b8bcac" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_c8cb8d88-1201-7ab6-8e7b-6277be49ec79" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryAssetsNoncurrent" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_4d3d1d45-fa86-b9f3-bf84-d7684e41eb29" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RegulatoryAssets_5c5a2f02-4fbe-b22a-35f7-da2080b8bcac" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_4d3d1d45-fa86-b9f3-bf84-d7684e41eb29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryLiabilities" xlink:label="loc_us-gaap_RegulatoryLiabilities_03a338ba-0a96-6a77-4cae-b5b0cfc00295" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryLiabilityCurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_b5e77ee0-3a1a-cc85-1e77-cd6ccdaced26" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RegulatoryLiabilities_03a338ba-0a96-6a77-4cae-b5b0cfc00295" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_b5e77ee0-3a1a-cc85-1e77-cd6ccdaced26" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RegulatoryLiabilityNoncurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_413934ef-609d-c68a-b4da-893fd82a7f6e" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RegulatoryLiabilities_03a338ba-0a96-6a77-4cae-b5b0cfc00295" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_413934ef-609d-c68a-b4da-893fd82a7f6e" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RegulatoryMattersTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/Revenue" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RevenueDisaggregationOfRevenueDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RevenueTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RiskManagementActivities" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RiskManagementActivitiesCashFlowHedgesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RiskManagementActivitiesDerivativesNotDesignatedAsHedgeInstrumentsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RiskManagementActivitiesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/RiskManagementActivitiesUtilitiesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/ScheduleOfFairValuesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/SupplementalCashFlowInformationDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/SupplementalCashFlowInformationTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.blackhillscorp.com/role/SupplementalDisclosureOfCashFlowInformation" xlink:type="extended" />
</link:linkbase>
