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  <xsd:element name="SegmentReportingAssets" id="mic_SegmentReportingAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SegmentReportingInformationBySecondarySegmentAxis" id="mic_SegmentReportingInformationBySecondarySegmentAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorSecuredTermLoanFacilityMember" id="mic_SeniorSecuredTermLoanFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SharesActivityLineItems" id="mic_SharesActivityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantAccountingPoliciesLineItems" id="mic_SignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantAccountingPoliciesTable" id="mic_SignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="TermLoanFacilityMember" id="mic_TermLoanFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="TotalAssetsCorporateAndOther" id="mic_TotalAssetsCorporateAndOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="TotalReportableSegmentsMember" id="mic_TotalReportableSegmentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="TaxExemptBondsMember" id="mic_TaxExemptBondsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="LoanFromPreviousShareholderMember" id="mic_LoanFromPreviousShareholderMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="GulfOpportunityZoneBondsOneMember" id="mic_GulfOpportunityZoneBondsOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="GulfOpportunityZoneBondsTwoMember" id="mic_GulfOpportunityZoneBondsTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="GulfOpportunityZoneBondsThreeMember" id="mic_GulfOpportunityZoneBondsThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="GulfOpportunityZoneBondsFourMember" id="mic_GulfOpportunityZoneBondsFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NewJerseyEconomicDevelopmentAuthorityDockFacilityRevenueRefundBondsMember" id="mic_NewJerseyEconomicDevelopmentAuthorityDockFacilityRevenueRefundBondsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NewJerseyEconomicDevelopmentAuthorityVariableRateDemandRevenueRefundingBondsMember" id="mic_NewJerseyEconomicDevelopmentAuthorityVariableRateDemandRevenueRefundingBondsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesLongTermDebt" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesLongTermDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentInterestRateFixedPercentageTerm" id="mic_DebtInstrumentInterestRateFixedPercentageTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentPercentageOfVariableRate" id="mic_DebtInstrumentPercentageOfVariableRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentRestrictedCash" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentRestrictedCash" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="WindPowerGenerationFacilities2014Member" id="mic_WindPowerGenerationFacilities2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionsPayableToNoncontrollingInterests" id="mic_DistributionsPayableToNoncontrollingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfEnergyGeneratingCapacityForWhichAcquireeHasCreditworthyOffTaker" id="mic_PercentageOfEnergyGeneratingCapacityForWhichAcquireeHasCreditworthyOffTaker" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="NumberOfWindTurbines" id="mic_NumberOfWindTurbines" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="ChangeInDebtInstrumentFixedMargin" id="mic_ChangeInDebtInstrumentFixedMargin" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapAndCommoditySwapMember" id="mic_InterestRateSwapAndCommoditySwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="LossesOnDerivativeContractsMember" id="mic_LossesOnDerivativeContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="TwentyFourteenIndependentDirectorEquityPlanMember" id="mic_TwentyFourteenIndependentDirectorEquityPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NonReportableSegmentMember" id="mic_NonReportableSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PerformanceFeeToManagerRelatedPartySettledInSharesAndOrCash" id="mic_PerformanceFeeToManagerRelatedPartySettledInSharesAndOrCash" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="WeightedAverageLifeOfTollingAgreements" id="mic_WeightedAverageLifeOfTollingAgreements" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="OneMonthLiborMember" id="mic_OneMonthLiborMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PriorToAcquisitionMember" id="mic_PriorToAcquisitionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="MacquarieCapitalMarketsCanadaLtdMember" id="mic_MacquarieCapitalMarketsCanadaLtdMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="LandAndLeaseholdImprovementsMember" id="mic_LandAndLeaseholdImprovementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="FixedBasedOperationsAxis" id="mic_FixedBasedOperationsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="FixedBasedOperationsDomain" id="mic_FixedBasedOperationsDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="MultipleFixedBasedOperationsMember" id="mic_MultipleFixedBasedOperationsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="OneSpecificFixedBasedOperationMember" id="mic_OneSpecificFixedBasedOperationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="IncrementalDepreciationDueToChangeInPolicyMember" id="mic_IncrementalDepreciationDueToChangeInPolicyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="IncrementalAmortizationDueToChangeInPolicyMember" id="mic_IncrementalAmortizationDueToChangeInPolicyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="RestrictedStockUnitGrantsJuneEighteenTwentyFifteenMember" id="mic_RestrictedStockUnitGrantsJuneEighteenTwentyFifteenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="TollingAgreementsCurrent" id="mic_TollingAgreementsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="TollingAgreementsNoncurrent" id="mic_TollingAgreementsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SpecialStockSharesIssued" id="mic_SpecialStockSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="AccruedAcquisitionCosts" id="mic_AccruedAcquisitionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfContractedTollingAgreement" id="mic_PercentageOfContractedTollingAgreement" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="BayonneEnergyCenterMember" id="mic_BayonneEnergyCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesTollingAgreements" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesTollingAgreements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesTollingAgreements" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesTollingAgreements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleLiabilities" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SeniorSeriesANotesMember" id="mic_SeniorSeriesANotesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorSeriesBNotesMember" id="mic_SeniorSeriesBNotesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="GOZoneBondsFiveMember" id="mic_GOZoneBondsFiveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="MaximumAmountOfGrossOffering" id="mic_MaximumAmountOfGrossOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SpecialStockMember" id="mic_SpecialStockMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="CapacityLeasedToRelatedParty" id="mic_CapacityLeasedToRelatedParty" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSharesSold" id="mic_NumberOfSharesSold" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="ContractedPowerAndEnergyMember" id="mic_ContractedPowerAndEnergyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfConsolidatedFinancialInformationTableTextBlock" id="mic_ScheduleOfConsolidatedFinancialInformationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="SpecialStockValue" id="mic_SpecialStockValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SpecialStockParOrStatedValuePerShare" id="mic_SpecialStockParOrStatedValuePerShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="SpecialStockSharesAuthorized" id="mic_SpecialStockSharesAuthorized" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="SpecialStockSharesOutstanding" id="mic_SpecialStockSharesOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="AmortizationOfTollingAgreementsIntangible" id="mic_AmortizationOfTollingAgreementsIntangible" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ConversionOfLlcInterestsToCommonStock" id="mic_ConversionOfLlcInterestsToCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ConversionOfLlcInterestsToCommonStockApic" id="mic_ConversionOfLlcInterestsToCommonStockApic" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfOutstandingDebtHedged" id="mic_PercentageOfOutstandingDebtHedged" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="AtMarketMember" id="mic_AtMarketMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfDirectors" id="mic_NumberOfDirectors" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="McusaMember" id="mic_McusaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="MefMember" id="mic_MefMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="FeesToManagerSettledInShares" id="mic_FeesToManagerSettledInShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDerivativeInstruments" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDerivativeInstruments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesDerivativeInstruments" id="mic_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesDerivativeInstruments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="InterestRateSwapBreakageFees" id="mic_InterestRateSwapBreakageFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DebtSubjectToTenderDate" id="mic_DebtSubjectToTenderDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsAndConversionOfDebtSecurities" id="mic_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsAndConversionOfDebtSecurities" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="PaymentOnEarlyTerminationOfInterestRateSwapAgreement" id="mic_PaymentOnEarlyTerminationOfInterestRateSwapAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
</xsd:schema>


