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  <xs:element id="bw_AllenShermanHoffLLCMember" abstract="true" name="AllenShermanHoffLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_BabcockWilcoxRenewableServiceASBWRSMember" abstract="true" name="BabcockWilcoxRenewableServiceASBWRSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationAdditionalConsideration" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAdditionalConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationAgreementTerm" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAgreementTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationBusinessAgreementPeriod" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationBusinessAgreementPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationTransitionalServicesAgreementPeriod" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationTransitionalServicesAgreementPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bw_BWSolarMember" abstract="true" name="BWSolarMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationsSellingGeneralAndAdministrativeExpenseReversal" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationsSellingGeneralAndAdministrativeExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentCosts" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationImpairmentOfLongLivedAssets" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationImpairmentOfLongLivedAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DisposalGroupIncludingDiscontinuedOperationNonOperatingIncomeExpense" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationNonOperatingIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTaxAttributableToNoncontrollingInterest" abstract="false" name="DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTaxAttributableToNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTaxAttributableToParent" abstract="false" name="DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTaxAttributableToParent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_IncreaseDecreaseContractsInProgress" abstract="false" name="IncreaseDecreaseContractsInProgress" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_BWMember" abstract="true" name="BWMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_PartsMember" abstract="true" name="PartsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_ProjectsMember" abstract="true" name="ProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_AppliedDigitalBaseElectronMember" abstract="true" name="AppliedDigitalBaseElectronMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_RevenuePerformanceObligationPercentOfRevenue" abstract="false" name="RevenuePerformanceObligationPercentOfRevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_NumberOfNaturalGasFiredPowerPlants" abstract="false" name="NumberOfNaturalGasFiredPowerPlants" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bw_NumberOfElectricUtilityPlantCapacityNaturalGas" abstract="false" name="NumberOfElectricUtilityPlantCapacityNaturalGas" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="bw_VariableFeeIncome" abstract="false" name="VariableFeeIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_RevenueRecognizedInContractWithCustomerLiabilityPercent" abstract="false" name="RevenueRecognizedInContractWithCustomerLiabilityPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_ContractsWithCustomerTable" abstract="true" name="ContractsWithCustomerTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bw_ContractsWithCustomerLineItems" abstract="true" name="ContractsWithCustomerLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bw_IncreaseDecreaseInAccountsReceivablePercent" abstract="false" name="IncreaseDecreaseInAccountsReceivablePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_IncreaseDecreaseInContractWithCustomerAssetPercent" abstract="false" name="IncreaseDecreaseInContractWithCustomerAssetPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_IncreaseDecreaseInContractWithCustomerLiabilityPercent" abstract="false" name="IncreaseDecreaseInContractWithCustomerLiabilityPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_AccruedContractLosses" abstract="false" name="AccruedContractLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_AccruedContractLossesIncreaseDecrease" abstract="false" name="AccruedContractLossesIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_AccruedContractLossesIncreaseDecreasePercent" abstract="false" name="AccruedContractLossesIncreaseDecreasePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_IntangibleAssetFiniteLivedEstimatedAmortizationExpenseAfterYearFour" abstract="false" name="IntangibleAssetFiniteLivedEstimatedAmortizationExpenseAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_LiabilityNotHeldForSaleNotPartOfDisposalGroup" abstract="false" name="LiabilityNotHeldForSaleNotPartOfDisposalGroup" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostsIncludedInCostOfSales" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostsIncludedInCostOfSales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_SeniorNotes8.75Due2030Member" abstract="true" name="SeniorNotes8.75Due2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_SeniorNotes8125Due2026Member" abstract="true" name="SeniorNotes8125Due2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_CreditFacilityMember" abstract="true" name="CreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_SaleLeasebackFinancingTransactionsMember" abstract="true" name="SaleLeasebackFinancingTransactionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_ForgivableLoanMember" abstract="true" name="ForgivableLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DebtCovenantAxis" abstract="true" name="DebtCovenantAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="bw_DebtCovenantDomain" abstract="true" name="DebtCovenantDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DebtInstrumentCovenantOneMember" abstract="true" name="DebtInstrumentCovenantOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DebtInstrumentCovenantTwoMember" abstract="true" name="DebtInstrumentCovenantTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DailySimpleSecuredOvernightFinancingRateSOFRMember" abstract="true" name="DailySimpleSecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_StateOfWestVirginiaMember" abstract="true" name="StateOfWestVirginiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_DebtInstrumentCovenantOutstandingAmount" abstract="false" name="DebtInstrumentCovenantOutstandingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DebtInstrumentCovenantCollateralMonitoringFeeAmount" abstract="false" name="DebtInstrumentCovenantCollateralMonitoringFeeAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_DebtInstrumentPBGCReserveAmount" abstract="false" name="DebtInstrumentPBGCReserveAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_PerformanceLettersOfCreditMember" abstract="true" name="PerformanceLettersOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_FinancialLettersOfCreditMember" abstract="true" name="FinancialLettersOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_BackstoppedBondsMember" abstract="true" name="BackstoppedBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_LettersOfCreditSubjectToForeignCurrencyRevaluationMember" abstract="true" name="LettersOfCreditSubjectToForeignCurrencyRevaluationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_LetterOfCreditNonDomesticFacilitiesMember" abstract="true" name="LetterOfCreditNonDomesticFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_AmortizationOfDebtIssuanceCostsAndDiscountsPremium" abstract="false" name="AmortizationOfDebtIssuanceCostsAndDiscountsPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_FinanceLeaseInterestExpenseAndOtherInterestExpense" abstract="false" name="FinanceLeaseInterestExpenseAndOtherInterestExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_CumulativeUndeclaredDividendsOfPreferredStock" abstract="false" name="CumulativeUndeclaredDividendsOfPreferredStock" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_SalesAgreementMember" abstract="true" name="SalesAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_TwoThousandTwentyFiveSalesAgreementMember" abstract="true" name="TwoThousandTwentyFiveSalesAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_SaleOfStockAggregateAuthorizedAmount" abstract="false" name="SaleOfStockAggregateAuthorizedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_WarrantsMember" abstract="true" name="WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_InitialWarrantsMember" abstract="true" name="InitialWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_AdditionalWarrantsMember" abstract="true" name="AdditionalWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_CashandCashEquivalentsForeignOperationsMember" abstract="true" name="CashandCashEquivalentsForeignOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_CashHeldToMeetReinsuranceReserveRequirementsMember" abstract="true" name="CashHeldToMeetReinsuranceReserveRequirementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_ProjectIndemnityCollateralMember" abstract="true" name="ProjectIndemnityCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_LettersOfCreditCollateralMember" abstract="true" name="LettersOfCreditCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_EscrowMember" abstract="true" name="EscrowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_RestrictedStockUnitsWithMarketConditionsMember" abstract="true" name="RestrictedStockUnitsWithMarketConditionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTargetStockPrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTargetStockPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bw_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueRevaluationAmount" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueRevaluationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseFactor" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseFactor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bw_DebtInstrumentAmountOfFairValueInExcessOfCarryingAmount" abstract="false" name="DebtInstrumentAmountOfFairValueInExcessOfCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bw_BabcockWilcoxEnterprisesInc.Member" abstract="true" name="BabcockWilcoxEnterprisesInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_B.RileyCapitalManagementLLCMember" abstract="true" name="B.RileyCapitalManagementLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_AnnualFeeMember" abstract="true" name="AnnualFeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_BRileySecuritiesIncMember" abstract="true" name="BRileySecuritiesIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bw_SaleOfStockCompensationPercentOfGrossProceeds" abstract="false" name="SaleOfStockCompensationPercentOfGrossProceeds" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bw_RelatedPartyTransactionFeePercent" abstract="false" name="RelatedPartyTransactionFeePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
</xs:schema>
