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  <xs:element id="nrgv_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ShortSwingProfitRecovery" abstract="false" name="ShortSwingProfitRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ReallocationOfNonControllingInterestDueToForfeiture" abstract="false" name="ReallocationOfNonControllingInterestDueToForfeiture" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_DepreciationDepletionAndAmortizationIncludingCostOfSales" abstract="false" name="DepreciationDepletionAndAmortizationIncludingCostOfSales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_NonCashDebtAndFinancingCosts" abstract="false" name="NonCashDebtAndFinancingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_NonCashInterestIncome" abstract="false" name="NonCashInterestIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_IncreaseDecreaseInAllowanceForCreditLosses" abstract="false" name="IncreaseDecreaseInAllowanceForCreditLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_EquitySecuritiesImpairmentLoss" abstract="false" name="EquitySecuritiesImpairmentLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_NonCashExpensesRelatedToEquityPurchaseAgreement" abstract="false" name="NonCashExpensesRelatedToEquityPurchaseAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_IncreaseDecreaseInAdvancesToSuppliers" abstract="false" name="IncreaseDecreaseInAdvancesToSuppliers" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ProceedsFromInvestmentTaxCreditInvestingActivities" abstract="false" name="ProceedsFromInvestmentTaxCreditInvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_PaymentForThePurchaseOfCappedCalls" abstract="false" name="PaymentForThePurchaseOfCappedCalls" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ShortSwingProfitRecoveryFinancingActivities" abstract="false" name="ShortSwingProfitRecoveryFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_WarrantsTextBlock" abstract="false" name="WarrantsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="nrgv_AllowanceForCreditLossTableTextBlock" abstract="false" name="AllowanceForCreditLossTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="nrgv_ScheduleOfInterestExpenseAndAmortizationExpenseTableTextBlock" abstract="false" name="ScheduleOfInterestExpenseAndAmortizationExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="nrgv_ScheduleOfMaturitiesOfShortTermAndLongTermDebtTableTextBlock" abstract="false" name="ScheduleOfMaturitiesOfShortTermAndLongTermDebtTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="nrgv_ScheduleOfSupplementalBalanceSheetDetailTableTextBlock" abstract="false" name="ScheduleOfSupplementalBalanceSheetDetailTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="nrgv_ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock" abstract="false" name="ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="nrgv_CustomerOneMember" abstract="true" name="CustomerOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_CustomerTwoMember" abstract="true" name="CustomerTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_CustomerThreeMember" abstract="true" name="CustomerThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_RestrictedCashRelatedToDebtFinancingMember" abstract="true" name="RestrictedCashRelatedToDebtFinancingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_RestrictedCashRelatedToCustomerProjectsMember" abstract="true" name="RestrictedCashRelatedToCustomerProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_RestrictedCashOtherMember" abstract="true" name="RestrictedCashOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_SaleOfEnergyStorageProductsMember" abstract="true" name="SaleOfEnergyStorageProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_TollingAndPowerPurchaseAgreementsRevenueMember" abstract="true" name="TollingAndPowerPurchaseAgreementsRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_OperationAndMaintenanceServicesMember" abstract="true" name="OperationAndMaintenanceServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_SoftwareLicensingMember" abstract="true" name="SoftwareLicensingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_IntellectualPropertyLicensingMember" abstract="true" name="IntellectualPropertyLicensingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_TollingRevenueMember" abstract="true" name="TollingRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_TollingRevenueAndPowerPurchaseAgreements" abstract="false" name="TollingRevenueAndPowerPurchaseAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_RevenueFromContractWithCustomerPerformanceObligationsBenchmarkMember" abstract="true" name="RevenueFromContractWithCustomerPerformanceObligationsBenchmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_LessorOperatingLeasePaymentToBeReceivedNumberOfEffectiveMonthlyFloors" abstract="false" name="LessorOperatingLeasePaymentToBeReceivedNumberOfEffectiveMonthlyFloors" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="nrgv_ContractWithCustomerAssetBeforeAllowanceForCreditLossCurrentRefundableContribution" abstract="false" name="ContractWithCustomerAssetBeforeAllowanceForCreditLossCurrentRefundableContribution" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ContractWithCustomerAssetBeforeAllowanceForCreditLossCurrentUnbilledReceivables" abstract="false" name="ContractWithCustomerAssetBeforeAllowanceForCreditLossCurrentUnbilledReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_LessorOperatingLeasePaymentToBeReceivedAfterYearFour" abstract="false" name="LessorOperatingLeasePaymentToBeReceivedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_EquitySecuritiesWithoutReadilyDeterminableFairValueAmountNoncurrent" abstract="false" name="EquitySecuritiesWithoutReadilyDeterminableFairValueAmountNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_KOREMember" abstract="true" name="KOREMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_NotesReceivableAllowanceForCreditLossRollForward" abstract="true" name="NotesReceivableAllowanceForCreditLossRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrgv_ConvertibleNotesReceivableAllowanceForCreditLoss" abstract="false" name="ConvertibleNotesReceivableAllowanceForCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ConvertibleNoteReceivableCreditLossExpenseReversal" abstract="false" name="ConvertibleNoteReceivableCreditLossExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_OtherNotesReceivableAbstract" abstract="true" name="OtherNotesReceivableAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrgv_OtherNotesReceivableAllowanceForCreditLoss" abstract="false" name="OtherNotesReceivableAllowanceForCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_OtherNoteReceivableCreditLossExpenseReversal" abstract="false" name="OtherNoteReceivableCreditLossExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_AllowanceForCreditLossRollForward" abstract="true" name="AllowanceForCreditLossRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrgv_AllowanceForCreditLoss" abstract="false" name="AllowanceForCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_RelatedPartyMarketingAndSalesCostsMember" abstract="true" name="RelatedPartyMarketingAndSalesCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_EnergyStorageSystemsMember" abstract="true" name="EnergyStorageSystemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_CommercialDemonstrationUnitMember" abstract="true" name="CommercialDemonstrationUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationMember" abstract="true" name="PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_BayWaR.e.JapanK.K.Member" abstract="true" name="BayWaR.e.JapanK.K.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_EskomHoldingsSOCLtd.Member" abstract="true" name="EskomHoldingsSOCLtd.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_DisposalGroupIncludingDiscontinuedOperationContractedEquipmentDeliveryPeriodToSale" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationContractedEquipmentDeliveryPeriodToSale" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_FavorableAcquiredContractsMember" abstract="true" name="FavorableAcquiredContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CRCSeniorNotesMember" abstract="true" name="CRCSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_CrossTrailsCreditAgreementMember" abstract="true" name="CrossTrailsCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceiptsMember" abstract="true" name="SaleOfFutureReceiptsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_SeniorConvertibleNotesMember" abstract="true" name="SeniorConvertibleNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_ConvertibleDebenturesMember" abstract="true" name="ConvertibleDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_FairValueAdjustmentForConvertibleDebentures" abstract="false" name="FairValueAdjustmentForConvertibleDebentures" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CalistogaResiliencyCenterLLCMember" abstract="true" name="CalistogaResiliencyCenterLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_AlternateBaseRateMember" abstract="true" name="AlternateBaseRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_DebtCovenantDefaultOrEventOfDefaultAmountWaivedAmount" abstract="false" name="DebtCovenantDefaultOrEventOfDefaultAmountWaivedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CedarAdvanceLLCMember" abstract="true" name="CedarAdvanceLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_ProceedsFromSaleOfFutureReceivables" abstract="false" name="ProceedsFromSaleOfFutureReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesFeeAmount" abstract="false" name="SaleOfFutureReceivablesFeeAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ProceedsFromSaleOfFutureReceivablesNet" abstract="false" name="ProceedsFromSaleOfFutureReceivablesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceiptsRemittedAmountPerWeek" abstract="false" name="SaleOfFutureReceiptsRemittedAmountPerWeek" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceiptsWeeklyRemittancePercentageOfFutureReceivablesCollections" abstract="false" name="SaleOfFutureReceiptsWeeklyRemittancePercentageOfFutureReceivablesCollections" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesAggregateAmountRepaymentPeriodOne" abstract="false" name="SaleOfFutureReceivablesAggregateAmountRepaymentPeriodOne" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesRepaymentTermForPeriodOne" abstract="false" name="SaleOfFutureReceivablesRepaymentTermForPeriodOne" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesAggregateAmountRepaymentPeriodTwo" abstract="false" name="SaleOfFutureReceivablesAggregateAmountRepaymentPeriodTwo" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesRepaymentTermForPeriodTwo" abstract="false" name="SaleOfFutureReceivablesRepaymentTermForPeriodTwo" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesAggregateAmountRepaymentPeriodThree" abstract="false" name="SaleOfFutureReceivablesAggregateAmountRepaymentPeriodThree" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesRepaymentTermForPeriodThree" abstract="false" name="SaleOfFutureReceivablesRepaymentTermForPeriodThree" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceivablesTotalAmountToBeRemitted" abstract="false" name="SaleOfFutureReceivablesTotalAmountToBeRemitted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_SaleOfFutureReceiptsRemittedAmountTotal" abstract="false" name="SaleOfFutureReceiptsRemittedAmountTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CappedCallsMember" abstract="true" name="CappedCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_DebtInstrumentDebtIssuanceDiscountPercentage" abstract="false" name="DebtInstrumentDebtIssuanceDiscountPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_DebtInstrumentInitialCapPrice" abstract="false" name="DebtInstrumentInitialCapPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="nrgv_DebtInstrumentConvertiblePremiumPercentageOverClosingPrice" abstract="false" name="DebtInstrumentConvertiblePremiumPercentageOverClosingPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_A2025DebenturesMember" abstract="true" name="A2025DebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_A2025DebenturesTrancheOneMember" abstract="true" name="A2025DebenturesTrancheOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_A2025DebenturesTrancheTwoMember" abstract="true" name="A2025DebenturesTrancheTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_A2025DebenturesTrancheThreeMember" abstract="true" name="A2025DebenturesTrancheThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_ProceedsFromConvertibleDebtGross" abstract="false" name="ProceedsFromConvertibleDebtGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_DebtCovenantPercentageOfPrincipalPortionPaid" abstract="false" name="DebtCovenantPercentageOfPrincipalPortionPaid" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_DebtCovenantDailyVWAPFourPriorTradingDays" abstract="false" name="DebtCovenantDailyVWAPFourPriorTradingDays" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_NumberOfTradingDaysDailyVWAP" abstract="false" name="NumberOfTradingDaysDailyVWAP" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_DebtCovenantFloorPricePerShare" abstract="false" name="DebtCovenantFloorPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="nrgv_A2026DebenturesMember" abstract="true" name="A2026DebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_A2026DebenturesTranche1Member" abstract="true" name="A2026DebenturesTranche1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_DebtInstrumentIssuancePricePercentageOfPar" abstract="false" name="DebtInstrumentIssuancePricePercentageOfPar" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_AmortizationEventNumberOfConsecutiveTradingDaysBelowFloorPrice" abstract="false" name="AmortizationEventNumberOfConsecutiveTradingDaysBelowFloorPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_AmortizationEventSharesIssuedThresholdUnderExchangeCapWithoutStockholderApprovalPercentage" abstract="false" name="AmortizationEventSharesIssuedThresholdUnderExchangeCapWithoutStockholderApprovalPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_AmortizationEventInEffectInstallmentAmountIncreasePercentOfThenOutstandingPrincipal" abstract="false" name="AmortizationEventInEffectInstallmentAmountIncreasePercentOfThenOutstandingPrincipal" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_DebtSettlementConditionAxis" abstract="true" name="DebtSettlementConditionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="nrgv_DebtSettlementConditionDomain" abstract="true" name="DebtSettlementConditionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_InstallmentConversionMember" abstract="true" name="InstallmentConversionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_ConvertibleDebenturesRollForward" abstract="true" name="ConvertibleDebenturesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrgv_DebtInstrumentIssuancesAtFairValue" abstract="false" name="DebtInstrumentIssuancesAtFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_DebtInstrumentChangeInFairValue" abstract="false" name="DebtInstrumentChangeInFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ConvertibleDebenturesCashSettlementsInclusiveOfAccruedInterestAndCashPaymentPremium" abstract="false" name="ConvertibleDebenturesCashSettlementsInclusiveOfAccruedInterestAndCashPaymentPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ProjectAcquisitionDeposits" abstract="false" name="ProjectAcquisitionDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_EquipmentDeposits" abstract="false" name="EquipmentDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_AccruedPurchasesCurrent" abstract="false" name="AccruedPurchasesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CustomerDepositsCurrentNotFromContractWithCustomer" abstract="false" name="CustomerDepositsCurrentNotFromContractWithCustomer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_UnearnedLeaseRevenue" abstract="false" name="UnearnedLeaseRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_OICWarrantsMember" abstract="true" name="OICWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_NovusWarrantsMember" abstract="true" name="NovusWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_DoradoGooseWarrantsMember" abstract="true" name="DoradoGooseWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityNumber" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="nrgv_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExercisedNumber" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExercisedNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="nrgv_DerivativeLiabilityAssetVaultMember" abstract="true" name="DerivativeLiabilityAssetVaultMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_CRCSeniorNotesAndCrossTrailsCreditAgreementMember" abstract="true" name="CRCSeniorNotesAndCrossTrailsCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_LongTermDebtNotMeasuredAtFairValue" abstract="false" name="LongTermDebtNotMeasuredAtFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_AtTheMarketOfferingMember" abstract="true" name="AtTheMarketOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_SaleOfStockMaximumAggregateOfferingPrice" abstract="false" name="SaleOfStockMaximumAggregateOfferingPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_TwentyTwentyTwoEquityIncentivePlanMember" abstract="true" name="TwentyTwentyTwoEquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_TwentyTwentyTwoEquityIncentivePlanSharesFromPriorPlansMember" abstract="true" name="TwentyTwentyTwoEquityIncentivePlanSharesFromPriorPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_TwentyTwentyTwoInducementPlanMember" abstract="true" name="TwentyTwentyTwoInducementPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_TwentyTwentyFiveInducementPlanMember" abstract="true" name="TwentyTwentyFiveInducementPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_ShareBasedCompensationArrangementByShareBasedPaymentAwardAuthorizedSharesAnnualIncreasePercentOfOutstandingShares" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAuthorizedSharesAnnualIncreasePercentOfOutstandingShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nrgv_ShareBasedCompensationArrangementByShareBasedPaymentAwardAuthorizedSharesAnnualIncreaseBoardOfDirectorsDecisionNumberOfShares" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAuthorizedSharesAnnualIncreaseBoardOfDirectorsDecisionNumberOfShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="nrgv_NumberOfTradingDaysToAchieveTargetPrice" abstract="false" name="NumberOfTradingDaysToAchieveTargetPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nrgv_NumberOfDaysInTradingWindow" abstract="false" name="NumberOfDaysInTradingWindow" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="nrgv_AggregateIntrinsicValueRollForward" abstract="true" name="AggregateIntrinsicValueRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrgv_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_NonPersonnelOperatingCosts" abstract="false" name="NonPersonnelOperatingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_ProceedsFromTransferOfInvestmentTaxCredits" abstract="false" name="ProceedsFromTransferOfInvestmentTaxCredits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_McMurtreProjectMember" abstract="true" name="McMurtreProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_McMurtreProjectNoticeToProceedMilestoneMember" abstract="true" name="McMurtreProjectNoticeToProceedMilestoneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_McMurtreProjectCommercialMilestoneMember" abstract="true" name="McMurtreProjectCommercialMilestoneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_NMPowerAndDataCenterProjectMember" abstract="true" name="NMPowerAndDataCenterProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_PowerGenerationEquipmentReservationMember" abstract="true" name="PowerGenerationEquipmentReservationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_A2GEnergyInc.Member" abstract="true" name="A2GEnergyInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrgv_DebtInstrumentBankGuaranteesAmount" abstract="false" name="DebtInstrumentBankGuaranteesAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_OutstandingPerformanceAndPaymentBonds" abstract="false" name="OutstandingPerformanceAndPaymentBonds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_BondsOutstandingOther" abstract="false" name="BondsOutstandingOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_AssetRetirementObligationMeasurementInput" abstract="false" name="AssetRetirementObligationMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="nrgv_CollaborativeArrangementRightsAndObligationsMilestonePaymentDevelopmentCosts" abstract="false" name="CollaborativeArrangementRightsAndObligationsMilestonePaymentDevelopmentCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CollaborativeArrangementRightsAndObligationsMilestonePaymentDepositAgreement" abstract="false" name="CollaborativeArrangementRightsAndObligationsMilestonePaymentDepositAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_CollaborativeArrangementRightsAndObligationsMilestonePayment" abstract="false" name="CollaborativeArrangementRightsAndObligationsMilestonePayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_LandPurchaseContingentServiceFeePercentagePerAcquiredTract" abstract="false" name="LandPurchaseContingentServiceFeePercentagePerAcquiredTract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="nrgv_PaymentOfReservationFee" abstract="false" name="PaymentOfReservationFee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_PaymentOfAdditionalReservationFee" abstract="false" name="PaymentOfAdditionalReservationFee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nrgv_StandardProductWarrantyAccrualSettlements" abstract="false" name="StandardProductWarrantyAccrualSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
