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  <xsd:element id="alce_ClassOfWarrantOrRightExercisableWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightExercisableWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssued" name="ClassOfWarrantOrRightIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssuedDuringPeriod" name="ClassOfWarrantOrRightIssuedDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageExercisePrice" name="ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightIssuedDuringPeriodWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice" name="ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_CleanEarthAcquisitionsSponsorMember" name="CleanEarthAcquisitionsSponsorMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_CloMember" name="CloMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_CommonStockConvertiblePercentageOfOutstandingCommonStock" name="CommonStockConvertiblePercentageOfOutstandingCommonStock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ConsultingAgreementInitialTerm" name="ConsultingAgreementInitialTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConsultingAgreementMember" name="ConsultingAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ConsultingMonthlyFee" name="ConsultingMonthlyFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_ContractualObligationMonthlyPayment" name="ContractualObligationMonthlyPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_ConversionOfDebtIntoPreferredStockMember" name="ConversionOfDebtIntoPreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNoteIntoCommonStockMember" name="ConversionOfNoteIntoCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNoteIntoRestrictedCommonStockMember" name="ConversionOfNoteIntoRestrictedCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNoteIntoSharesMember" name="ConversionOfNoteIntoSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNoteIntoUnrestrictedCommonStockMember" name="ConversionOfNoteIntoUnrestrictedCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfNotesIntoSeriesCConvertiblePreferredStockMember" name="ConversionOfNotesIntoSeriesCConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfPromissoryNoteIntoCommonStockMember" name="ConversionOfPromissoryNoteIntoCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfSncOutstandingDebtIntoSeriesDPreferredStockMember" name="ConversionOfSncOutstandingDebtIntoSeriesDPreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConversionOfTwoPromissoryNotesIntoSeriesEConvertiblePreferredStockMember" name="ConversionOfTwoPromissoryNotesIntoSeriesEConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ConvertibleDebtFairValueAdjustment" name="ConvertibleDebtFairValueAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleNoteMember" name="ConvertibleNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleNotesApril2024Member" name="ConvertibleNotesApril2024Member" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleNotesApril2024WarrantLiabilityMember" name="ConvertibleNotesApril2024WarrantLiabilityMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ConvertibleNotesOctober2024Member" name="ConvertibleNotesOctober2024Member" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_CostsPreviouslyCapitalizedSubsumedForAcquisition" name="CostsPreviouslyCapitalizedSubsumedForAcquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_CountryRenewableProgramsMember" name="CountryRenewableProgramsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_CurrentIncomeTaxExpenseBenefitContinuedAndDiscontinuedOperations" name="CurrentIncomeTaxExpenseBenefitContinuedAndDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentBusinessCombinationAmountSettled" name="DebtInstrumentBusinessCombinationAmountSettled" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentConversionPriceCommonStockVwapRate" name="DebtInstrumentConversionPriceCommonStockVwapRate" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_DebtInstrumentCovenantCapitalRaise" name="DebtInstrumentCovenantCapitalRaise" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DebtInstrumentInterestRateInEventOfDefault" name="DebtInstrumentInterestRateInEventOfDefault" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_DebtInstrumentMinimumEquityFinancingCovenant" name="DebtInstrumentMinimumEquityFinancingCovenant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DebtInstrumentOriginalIssueDiscount" name="DebtInstrumentOriginalIssueDiscount" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentOriginalIssueDiscountPercentage" name="DebtInstrumentOriginalIssueDiscountPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentOriginalIssueDiscountPercentageIncrease" name="DebtInstrumentOriginalIssueDiscountPercentageIncrease" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtInstrumentRepaymentPremiumPercentage" name="DebtInstrumentRepaymentPremiumPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DebtRestructuringCosts" name="DebtRestructuringCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DeemedDividendToPreferredShareholders" name="DeemedDividendToPreferredShareholders" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DeferredTaxAssetsAssetBasisDifferences" name="DeferredTaxAssetsAssetBasisDifferences" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DevelopmentCost" name="DevelopmentCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DevelopmentCostsSubsumed" name="DevelopmentCostsSubsumed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DevelopmentCostsTextBlock" name="DevelopmentCostsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_DirectorsRemunerationMember" name="DirectorsRemunerationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DiscontinuedOperationsCurrentIncomeTaxExpenseBenefit" name="DiscontinuedOperationsCurrentIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DiscountRateOnFeesAndOtherExpenses" name="DiscountRateOnFeesAndOtherExpenses" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupCostsAssociatedWithSale" name="DisposalGroupCostsAssociatedWithSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationAmountsDueToAndNotAcquired" name="DisposalGroupIncludingDiscontinuedOperationAmountsDueToAndNotAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationAssetDisposalCosts" name="DisposalGroupIncludingDiscontinuedOperationAssetDisposalCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationCapitalizedCosts" name="DisposalGroupIncludingDiscontinuedOperationCapitalizedCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationCapitalizedDevelopmentCosts" name="DisposalGroupIncludingDiscontinuedOperationCapitalizedDevelopmentCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationCurrentPortionOfOperatingLeaseLiabilities" name="DisposalGroupIncludingDiscontinuedOperationCurrentPortionOfOperatingLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationDevelopmentCosts" name="DisposalGroupIncludingDiscontinuedOperationDevelopmentCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationDueFromtoRelatedParties" name="DisposalGroupIncludingDiscontinuedOperationDueFromtoRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationGainLossOnDisposal" name="DisposalGroupIncludingDiscontinuedOperationGainLossOnDisposal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationGainLossOnForeignCurrencyExchangeRates" name="DisposalGroupIncludingDiscontinuedOperationGainLossOnForeignCurrencyExchangeRates" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationGainLossOnSaleOfNetAssets" name="DisposalGroupIncludingDiscontinuedOperationGainLossOnSaleOfNetAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationGreenBonds" name="DisposalGroupIncludingDiscontinuedOperationGreenBonds" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationImpairmentLossOnRemeasurementOfFairValue" name="DisposalGroupIncludingDiscontinuedOperationImpairmentLossOnRemeasurementOfFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationNetAssets" name="DisposalGroupIncludingDiscontinuedOperationNetAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationNetTaxesRecoverable" name="DisposalGroupIncludingDiscontinuedOperationNetTaxesRecoverable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationNonCurrentPortionOfOperatingLeaseLiabilities" name="DisposalGroupIncludingDiscontinuedOperationNonCurrentPortionOfOperatingLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationNonconvertibleDebtCurrrent" name="DisposalGroupIncludingDiscontinuedOperationNonconvertibleDebtCurrrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseAssetNoncurrent" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseAssetNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesCurrent" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationOperatingLeasesCurrent" name="DisposalGroupIncludingDiscontinuedOperationOperatingLeasesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationOtherExpensesTotal" name="DisposalGroupIncludingDiscontinuedOperationOtherExpensesTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationRestrictedCash" name="DisposalGroupIncludingDiscontinuedOperationRestrictedCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationShortSecuredDebt" name="DisposalGroupIncludingDiscontinuedOperationShortSecuredDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationShortTermConvertibleAndNonConvertibleNotes" name="DisposalGroupIncludingDiscontinuedOperationShortTermConvertibleAndNonConvertibleNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationSolisBondWaiverFee" name="DisposalGroupIncludingDiscontinuedOperationSolisBondWaiverFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupIncludingDiscontinuedOperationUnbilledEnergyIncentives" name="DisposalGroupIncludingDiscontinuedOperationUnbilledEnergyIncentives" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_DisposalGroupNotDiscontinuedOperationCostsAssociatedWithSale" name="DisposalGroupNotDiscontinuedOperationCostsAssociatedWithSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalStatementOfIncomeExtensibleListNotDisclosedFlag" name="DisposalGroupNotDiscontinuedOperationGainLossOnDisposalStatementOfIncomeExtensibleListNotDisclosedFlag" nillable="true" substitutionGroup="xbrli:item" type="xbrli:booleanItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupNotIncludingDiscontinuedOperationAssetsAndLiabilitiesOfSubsidiarySoldTableTextBlock" name="DisposalGroupNotIncludingDiscontinuedOperationAssetsAndLiabilitiesOfSubsidiarySoldTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupNumberOfParksSold" name="DisposalGroupNumberOfParksSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_DisposalGroupPercentageOfGroupfRevenuesAccountedFor" name="DisposalGroupPercentageOfGroupfRevenuesAccountedFor" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EarningsBeforeInterestTaxesDepreciationAndAmortization" name="EarningsBeforeInterestTaxesDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateAmount1" name="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRateAmount1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceAmount1" name="EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceAmount1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationChangeInInterestOfConvertibleNotesAmount" name="EffectiveIncomeTaxRateReconciliationChangeInInterestOfConvertibleNotesAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationChangeInInterestOfConvertibleNotesPercent" name="EffectiveIncomeTaxRateReconciliationChangeInInterestOfConvertibleNotesPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationDebtCancellationAmount" name="EffectiveIncomeTaxRateReconciliationDebtCancellationAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationDebtCancellationPercent" name="EffectiveIncomeTaxRateReconciliationDebtCancellationPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationDisposalOfEntityAmount" name="EffectiveIncomeTaxRateReconciliationDisposalOfEntityAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationDisposalOfEntityPercent" name="EffectiveIncomeTaxRateReconciliationDisposalOfEntityPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationOtherEquityExpensesAmount" name="EffectiveIncomeTaxRateReconciliationOtherEquityExpensesAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationOtherEquityExpensesPercent" name="EffectiveIncomeTaxRateReconciliationOtherEquityExpensesPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationPermanentItemsAmount" name="EffectiveIncomeTaxRateReconciliationPermanentItemsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationStockIssuanceCostsAmount" name="EffectiveIncomeTaxRateReconciliationStockIssuanceCostsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationStockIssuanceCostsPercent" name="EffectiveIncomeTaxRateReconciliationStockIssuanceCostsPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount" name="EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" name="EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationWarrantsAmount" name="EffectiveIncomeTaxRateReconciliationWarrantsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_EffectiveIncomeTaxRateReconciliationWarrantsPercent" name="EffectiveIncomeTaxRateReconciliationWarrantsPercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_EmployeeMember" name="EmployeeMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_EnergyOfftakeAgreementsMember" name="EnergyOfftakeAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_EquityOfferingMaximumAmount" name="EquityOfferingMaximumAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_EveronEnergyLlcMember" name="EveronEnergyLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_FPAAssetsFairValueAdjustment" name="FPAAssetsFairValueAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExtinguishments" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityExtinguishments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityReclassifiedAccruedInterest" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityReclassifiedAccruedInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityReclassifiedReevaluation" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityReclassifiedReevaluation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FavorableContractsMember" name="FavorableContractsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FiveCustomersMember" name="FiveCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ForeignCurrencyTranslationReserveMember" name="ForeignCurrencyTranslationReserveMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ForwardPurchaseAgreementMember" name="ForwardPurchaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FourCurrentIndependentDirectorsMember" name="FourCurrentIndependentDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FourThirdPartyDebtHoldersMember" name="FourThirdPartyDebtHoldersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_FourthTrancheMember" name="FourthTrancheMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_FractionalSharesRounddownFromReverseStockSplit" name="FractionalSharesRounddownFromReverseStockSplit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainLossOnExtinguishmentOfLiabilities" name="GainLossOnExtinguishmentOfLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainLossOnIssuanceOfDebt" name="GainLossOnIssuanceOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainLossOnRecission" name="GainLossOnRecission" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainLossOnRescissionOfTransaction" name="GainLossOnRescissionOfTransaction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_GainOnExtinguishmentOfDebt" name="GainOnExtinguishmentOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_GainOnSettlement" name="GainOnSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_GreenCertificatesMember" name="GreenCertificatesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_GroupOfPrivateLendersMember" name="GroupOfPrivateLendersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_HooverMember" name="HooverMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_HoverEnergyLlcMember" name="HoverEnergyLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_HoverMember" name="HoverMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ImpairmentOfAmountsDueFromRelatedParty" name="ImpairmentOfAmountsDueFromRelatedParty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_IncreaseDecreaseInDueToFromRelatedPartiesCurrent" name="IncreaseDecreaseInDueToFromRelatedPartiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_IncreaseInProfessionalFeesPerMonth" name="IncreaseInProfessionalFeesPerMonth" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_InitialPaymentOnProject" name="InitialPaymentOnProject" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_InvestorPromissoryNotesFirstTrancheMember" name="InvestorPromissoryNotesFirstTrancheMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_InvestorPromissoryNotesMember" name="InvestorPromissoryNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_InvestorPromissoryNotesSecondTrancheMember" name="InvestorPromissoryNotesSecondTrancheMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ItalianProjectsMember" name="ItalianProjectsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_JointVentureMember" name="JointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_LiionMember" name="LiionMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_LossOnExtinguishmentOfDebt" name="LossOnExtinguishmentOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_LossOnSettlement" name="LossOnSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_LossOnSettlementOfLiability" name="LossOnSettlementOfLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MH02AndItalianSPVsMember" name="MH02AndItalianSPVsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MadridSpainLeaseMember" name="MadridSpainLeaseMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MajorityBuyerMember" name="MajorityBuyerMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MaximGroupLlcMember" name="MaximGroupLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_MaximumBenchmarkAmountForRepaymentOfDebt" name="MaximumBenchmarkAmountForRepaymentOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_MaximumConversionPrice" name="MaximumConversionPrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_May2025NoteMember" name="May2025NoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MeteoraCapitalLlcMember" name="MeteoraCapitalLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_Mh02NoteMember" name="Mh02NoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MicrogridProjectsWithHoverEnergyInTheUsMember" name="MicrogridProjectsWithHoverEnergyInTheUsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MicrogridProjectsWithHoverEnergyMember" name="MicrogridProjectsWithHoverEnergyMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MinorityBuyerMember" name="MinorityBuyerMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ModifiedNotesMember" name="ModifiedNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_MorganFranklinConsultingLlcMember" name="MorganFranklinConsultingLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_NetGainLossOnSaleOfSubsidiaries" name="NetGainLossOnSaleOfSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_NicholasParkerMember" name="NicholasParkerMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_NonCashInvestingAndFinancingActivitiesSharesIssuedForStockCompensationToThirdParties" name="NonCashInvestingAndFinancingActivitiesSharesIssuedForStockCompensationToThirdParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_NoncashInvestingAndFinancingActivitiesSharesIssuedInSettlementOfDebtAndOtherLiabilities" name="NoncashInvestingAndFinancingActivitiesSharesIssuedInSettlementOfDebtAndOtherLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NordicEsgMember" name="NordicEsgMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NotePurchaseAgreement2025NoteMember" name="NotePurchaseAgreement2025NoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NotePurchaseAgreementMember" name="NotePurchaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NoteToFinancialStatementDetailsTextual" name="NoteToFinancialStatementDetailsTextual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NotesToFinancialStatements" name="NotesToFinancialStatements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_NotesToFinancialStatementsAbstract" name="NotesToFinancialStatementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_November2025NoteMember" name="November2025NoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_NumberOfMajorCustomers" name="NumberOfMajorCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_NumberOfSharesUsedToDetermineConversionPrice" name="NumberOfSharesUsedToDetermineConversionPrice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_OIDNotesMember" name="OIDNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ObligationToPurchaseProjectAtMarketValueMinimumPerMegawatt" name="ObligationToPurchaseProjectAtMarketValueMinimumPerMegawatt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_OneCustomerMember" name="OneCustomerMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_OperatingLeaseAnnualCost" name="OperatingLeaseAnnualCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_OperatingLeasePaymentsFixed" name="OperatingLeasePaymentsFixed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_OperatingLeasePaymentsLiabilityReduction" name="OperatingLeasePaymentsLiabilityReduction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_OperatingLeasesOfLesseeTableTextBlock" name="OperatingLeasesOfLesseeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_OriginalIssueDiscountAndDefaultInterest" name="OriginalIssueDiscountAndDefaultInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_OrrickMember" name="OrrickMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_OtherForeignCountriesTaxAuthoritiesMember" name="OtherForeignCountriesTaxAuthoritiesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_OtherPayablesCurrent" name="OtherPayablesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_OtherPayablesTextBlock" name="OtherPayablesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_OutOfPocketFeesReimbursed" name="OutOfPocketFeesReimbursed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_OwnershipPercentage" name="OwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_OwnershipSoldPercentage" name="OwnershipSoldPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PaymentsOfConstructionInProcess" name="PaymentsOfConstructionInProcess" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_PaymentsOfCostsCapitalized" name="PaymentsOfCostsCapitalized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_PercentageOfFaceValueOfNote" name="PercentageOfFaceValueOfNote" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_PlacementAgentWarrantsMember" name="PlacementAgentWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_PolicyTable" name="PolicyTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_PreferredStockSharesDesignated" name="PreferredStockSharesDesignated" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PreferredStockSharesDesignatedIncrease" name="PreferredStockSharesDesignatedIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PreferredStockStatedValue" name="PreferredStockStatedValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_PreferredStockVotesPerShare" name="PreferredStockVotesPerShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PrepaidExpenseAndOtherAssetsExcludingOtherReceivablesCurrent" name="PrepaidExpenseAndOtherAssetsExcludingOtherReceivablesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_PrepaidExpensesAndOtherCurrentAssetsTextBlock" name="PrepaidExpensesAndOtherCurrentAssetsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ProceedsFromIssuanceOfDebtExpected" name="ProceedsFromIssuanceOfDebtExpected" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_ProceedsOfGrossProceedsReceived" name="ProceedsOfGrossProceedsReceived" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ProfessionalConsultingAgreementMember" name="ProfessionalConsultingAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_PromissoryNoteMember" name="PromissoryNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_PutOptionAgreementCovenantEquityRaise" name="PutOptionAgreementCovenantEquityRaise" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementCovenantPeriodOfTime" name="PutOptionAgreementCovenantPeriodOfTime" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementCovenantPriceOfRepurchasedShares" name="PutOptionAgreementCovenantPriceOfRepurchasedShares" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_PutOptionAgreementCovenantSharesRepurchased" name="PutOptionAgreementCovenantSharesRepurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_RecissionOfNonconvertibleDebtNoncurrent" name="RecissionOfNonconvertibleDebtNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_RecycledSharesMember" name="RecycledSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_RelatedPartyTransactionPolicyTextBlock" name="RelatedPartyTransactionPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_RemunerationInRespectOfServicesOfDirectorsMember" name="RemunerationInRespectOfServicesOfDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_RepresentsRemunerationInRespectToLongtermIncentiveSchemesWithRestrictedSharesMember" name="RepresentsRemunerationInRespectToLongtermIncentiveSchemesWithRestrictedSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_RescissionOfAccountsPayable" name="RescissionOfAccountsPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_RescissionOfIntangibleAssets" name="RescissionOfIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_RescissionOfNonconvertibleDebtShortTerm" name="RescissionOfNonconvertibleDebtShortTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_RescissionOfTheLiionTransactionMember" name="RescissionOfTheLiionTransactionMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_RescissionTextBlock" name="RescissionTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ResetPrice" name="ResetPrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_RestrictedCommonStockMember" name="RestrictedCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_RetainedEarningsAccumulatedDeficitIncomeLossFromDiscontinuedOperationsNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" name="RetainedEarningsAccumulatedDeficitIncomeLossFromDiscontinuedOperationsNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ReverseStockSplitMember" name="ReverseStockSplitMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_RisksAndUncertaintiesPolicyTextBlock" name="RisksAndUncertaintiesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SaleOfAssetsHeldForSaleTextBlock" name="SaleOfAssetsHeldForSaleTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SaleOfAssetsMinimumPrice" name="SaleOfAssetsMinimumPrice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_SaleOfSubsidiariesTextBlock" name="SaleOfSubsidiariesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ScafAndClinBusinessCombinationMember" name="ScafAndClinBusinessCombinationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ScheduleOfTaxesRecoverableAndPayableTableTextBlock" name="ScheduleOfTaxesRecoverableAndPayableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecondInvestorPromissoryNoteMember" name="SecondInvestorPromissoryNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecondPartialTrancheMember" name="SecondPartialTrancheMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecondTrancheMember" name="SecondTrancheMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecureNetCapitalLlcMember" name="SecureNetCapitalLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecuredPromissoryNotesSoldInSubscriptionAgreementsMember" name="SecuredPromissoryNotesSoldInSubscriptionAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SecuritiesPurchaseAgreementMember" name="SecuritiesPurchaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeniorConvertibleNoteMember" name="SeniorConvertibleNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_September2025NoteMember" name="September2025NoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_September2025NotesMember" name="September2025NotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesBConvertiblePreferredStockMember" name="SeriesBConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesCConvertiblePreferredStockMember" name="SeriesCConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesDConvertiblePreferredStockMember" name="SeriesDConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SeriesEConvertiblePreferredStockMember" name="SeriesEConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SettlementAgreementBeneficialOwnershipPercentageOfCommonStock" name="SettlementAgreementBeneficialOwnershipPercentageOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SettlementOfPayablesForSharesMember" name="SettlementOfPayablesForSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantPercentageOfSharesOutstanding" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantPercentageOfSharesOutstanding" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_SharePurchaseAgreementPercentageOfOwnershipAfterAgreement" name="SharePurchaseAgreementPercentageOfOwnershipAfterAgreement" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SharebasedCompensationArrangementBySharebasedPaymentAwardVotingRightsPercentage" name="SharebasedCompensationArrangementBySharebasedPaymentAwardVotingRightsPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ShareholderOwnershipPercentage" name="ShareholderOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="alce_SharesIssuedDuringPeriodSharesSettlementOfRelatedPartyDebt" name="SharesIssuedDuringPeriodSharesSettlementOfRelatedPartyDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SharesIssuedDuringPeriodValueSettlementOfRelatedPartyDebt" name="SharesIssuedDuringPeriodValueSettlementOfRelatedPartyDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_SharesReturnedOnRescissionOfBusinessAcquisitionShares" name="SharesReturnedOnRescissionOfBusinessAcquisitionShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SharesReturnedOnRescissionOfBusinessAcquisitionValue" name="SharesReturnedOnRescissionOfBusinessAcquisitionValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SolarEnergyFacilitiesMember" name="SolarEnergyFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SolarPvProjectsInSpainMember" name="SolarPvProjectsInSpainMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SolisBondCompanyDacMember" name="SolisBondCompanyDacMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_SolisBondWaiverFees" name="SolisBondWaiverFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_SouthernPointCapitalCorporationMember" name="SouthernPointCapitalCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SpacSponsorCapitalAccessMember" name="SpacSponsorCapitalAccessMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SpanishAssetsMember" name="SpanishAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesIssuedForSettlementOfPayables" name="StockIssuedDuringPeriodSharesIssuedForSettlementOfPayables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesJointVentureAgreement" name="StockIssuedDuringPeriodSharesJointVentureAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodSharesSharesIssuedForDebtIssuanceCosts" name="StockIssuedDuringPeriodSharesSharesIssuedForDebtIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueJointVentureAgreement" name="StockIssuedDuringPeriodValueJointVentureAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueMergerCostsSettlementOfRelatedPartyDebtAndStock" name="StockIssuedDuringPeriodValueMergerCostsSettlementOfRelatedPartyDebtAndStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueSettlementOfPayables" name="StockIssuedDuringPeriodValueSettlementOfPayables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="alce_StockIssuedDuringPeriodValueSharesIssuedForDebtIssuanceCosts" name="StockIssuedDuringPeriodValueSharesIssuedForDebtIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SubscriptionAgreementsMember" name="SubscriptionAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SubsequentSecuredPromissoryNotesSoldInSubscriptionAgreementsMember" name="SubsequentSecuredPromissoryNotesSoldInSubscriptionAgreementsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_SunriseDevelopmentLlcMember" name="SunriseDevelopmentLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_TaxesReceivableAndPayablePolicyTextBlock" name="TaxesReceivableAndPayablePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_TaxesRecoverable" name="TaxesRecoverable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_TaxesRecoverableAndPayable" name="TaxesRecoverableAndPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="alce_TaxesRecoverableAndPayableTextBlock" name="TaxesRecoverableAndPayableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_TaxesRecoverableCurrent" name="TaxesRecoverableCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_TermLoansMember" name="TermLoansMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_The2024ConvertibleNotesMember" name="The2024ConvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TheTwoThousandAndTwentyFourNotesMember" name="TheTwoThousandAndTwentyFourNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TheWarrantMember" name="TheWarrantMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ThirdInvestorPromissoryNoteMember" name="ThirdInvestorPromissoryNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_ThirdTrancheMember" name="ThirdTrancheMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TotalNotesMember" name="TotalNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_TotalRevenueIncludingDiscontinuedOperations" name="TotalRevenueIncludingDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_TwentyTwentyThreeEquityIncentivePlanMember" name="TwentyTwentyThreeEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_UnitedStatesOfficeLeaseMember" name="UnitedStatesOfficeLeaseMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="alce_ValueOfRestitution" name="ValueOfRestitution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="alce_VotingSharesPercentage" name="VotingSharesPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="alce_WarrantLiabilityMember" name="WarrantLiabilityMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_WarrantsMember" name="WarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_WorkingCapitalLoanMember" name="WorkingCapitalLoanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-10-accrued-liabilities-schedule-of-accrued-liabilities-details" name="statement-statement-note-10-accrued-liabilities-schedule-of-accrued-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-10-accrued-liabilities-tables" name="statement-statement-note-10-accrued-liabilities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-11-taxes-recoverable-and-payable-schedule-of-taxes-recoverable-details" name="statement-statement-note-11-taxes-recoverable-and-payable-schedule-of-taxes-recoverable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-11-taxes-recoverable-and-payable-tables" name="statement-statement-note-11-taxes-recoverable-and-payable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-12-convertible-debt-and-nonconvertible-promissory-notes-convertible-notes-details" name="statement-statement-note-12-convertible-debt-and-nonconvertible-promissory-notes-convertible-notes-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-12-convertible-debt-and-nonconvertible-promissory-notes-schedule-of-debt-details" name="statement-statement-note-12-convertible-debt-and-nonconvertible-promissory-notes-schedule-of-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-12-convertible-debt-and-nonconvertible-promissory-notes-tables" name="statement-statement-note-12-convertible-debt-and-nonconvertible-promissory-notes-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-14-leases-summary-of-operating-lease-components-details" name="statement-statement-note-14-leases-summary-of-operating-lease-components-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-14-leases-tables" name="statement-statement-note-14-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-17-discontinued-operations-sold-poland-and-netherlands-summary-of-disposal-groups-details" name="statement-statement-note-17-discontinued-operations-sold-poland-and-netherlands-summary-of-disposal-groups-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-17-discontinued-operations-sold-poland-and-netherlands-summary-of-disposal-groups-details-parentheticals" name="statement-statement-note-17-discontinued-operations-sold-poland-and-netherlands-summary-of-disposal-groups-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-17-discontinued-operations-sold-poland-and-netherlands-tables" name="statement-statement-note-17-discontinued-operations-sold-poland-and-netherlands-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-18-sale-of-spanish-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" name="statement-statement-note-18-sale-of-spanish-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-18-sale-of-spanish-subsidiaries-tables" name="statement-statement-note-18-sale-of-spanish-subsidiaries-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-19-sale-of-assets-held-for-sale-mh-02-its-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" name="statement-statement-note-19-sale-of-assets-held-for-sale-mh-02-its-subsidiaries-summary-of-assets-and-liabilities-in-sale-of-subsidiary-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-19-sale-of-assets-held-for-sale-mh-02-its-subsidiaries-tables" name="statement-statement-note-19-sale-of-assets-held-for-sale-mh-02-its-subsidiaries-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-20-shareholders-equity-summary-of-warrant-activity-details" name="statement-statement-note-20-shareholders-equity-summary-of-warrant-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-20-shareholders-equity-tables" name="statement-statement-note-20-shareholders-equity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-21-segment-and-geographic-information-schedule-of-segment-information-details" name="statement-statement-note-21-segment-and-geographic-information-schedule-of-segment-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-21-segment-and-geographic-information-tables" name="statement-statement-note-21-segment-and-geographic-information-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-22-income-tax-provision-components-of-tax-expense-details" name="statement-statement-note-22-income-tax-provision-components-of-tax-expense-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-22-income-tax-provision-deferred-tax-assets-details" name="statement-statement-note-22-income-tax-provision-deferred-tax-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-22-income-tax-provision-tables" name="statement-statement-note-22-income-tax-provision-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-22-income-tax-provision-tax-reconciliation-details" name="statement-statement-note-22-income-tax-provision-tax-reconciliation-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-22-income-tax-provision-tax-reconciliation-details-parentheticals" name="statement-statement-note-22-income-tax-provision-tax-reconciliation-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-22-income-tax-provision-unrecognized-tax-benefits-details" name="statement-statement-note-22-income-tax-provision-unrecognized-tax-benefits-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-23-related-party-related-party-transactions-details" name="statement-statement-note-23-related-party-related-party-transactions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-23-related-party-tables" name="statement-statement-note-23-related-party-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-3-summary-of-significant-accounting-policies-cash-flows-of-discontinued-operations-details" name="statement-statement-note-3-summary-of-significant-accounting-policies-cash-flows-of-discontinued-operations-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-3-summary-of-significant-accounting-policies-disaggregation-of-revenues-details" name="statement-statement-note-3-summary-of-significant-accounting-policies-disaggregation-of-revenues-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-3-summary-of-significant-accounting-policies-summary-of-antidilutive-securities-details" name="statement-statement-note-3-summary-of-significant-accounting-policies-summary-of-antidilutive-securities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-3-summary-of-significant-accounting-policies-tables" name="statement-statement-note-3-summary-of-significant-accounting-policies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-assets-with-unobservable-inputs-details" name="statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-assets-with-unobservable-inputs-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details" name="statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details-parentheticals" name="statement-statement-note-4-fair-value-measurements-schedule-of-fair-value-liabilities-with-unobservable-inputs-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-summary-of-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" name="statement-statement-note-4-fair-value-measurements-summary-of-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-summary-of-fair-value-assumptions-details" name="statement-statement-note-4-fair-value-measurements-summary-of-fair-value-assumptions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-4-fair-value-measurements-tables" name="statement-statement-note-4-fair-value-measurements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-assets-acquired-details" name="statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-assets-acquired-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-pro-forma-information-details" name="statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-pro-forma-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-schedule-of-consideration-transferred-details" name="statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-schedule-of-consideration-transferred-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-schedule-of-consideration-transferred-details-parentheticals" name="statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-schedule-of-consideration-transferred-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-tables" name="statement-statement-note-6-formation-of-everon-energy-joint-venture-and-consolidation-of-variable-interest-entity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-7-prepaid-expenses-and-other-current-assets-schedule-of-prepaid-expenses-and-other-current-assets-details" name="statement-statement-note-7-prepaid-expenses-and-other-current-assets-schedule-of-prepaid-expenses-and-other-current-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-7-prepaid-expenses-and-other-current-assets-tables" name="statement-statement-note-7-prepaid-expenses-and-other-current-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-8-capitalized-development-cost-and-other-longterm-assets-schedule-of-capitalized-development-costs-and-other-longterm-assets-details" name="statement-statement-note-8-capitalized-development-cost-and-other-longterm-assets-schedule-of-capitalized-development-costs-and-other-longterm-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-8-capitalized-development-cost-and-other-longterm-assets-tables" name="statement-statement-note-8-capitalized-development-cost-and-other-longterm-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-9-accounts-payable-schedule-of-accounts-payable-details" name="statement-statement-note-9-accounts-payable-schedule-of-accounts-payable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-note-9-accounts-payable-tables" name="statement-statement-note-9-accounts-payable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="alce_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
