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  <xsd:element id="enph_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsMarketValue" name="ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsMarketValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="enph_GeneralDurationOfEmployeeStockPurchasePlan" name="GeneralDurationOfEmployeeStockPurchasePlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_HerculesTechnologyGrowthCapitalIncMember" name="HerculesTechnologyGrowthCapitalIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_HorizonTechnologyFinanceCorporationMember" name="HorizonTechnologyFinanceCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_IncomeTaxReconciliationNondeductibleAndNontaxableExpenseOther" name="IncomeTaxReconciliationNondeductibleAndNontaxableExpenseOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_IncomeTaxesLineItems" name="IncomeTaxesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_IncomeTaxesTable" name="IncomeTaxesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_IncreaseInCommonStockSharesReservedForFutureIssuancePercentage" name="IncreaseInCommonStockSharesReservedForFutureIssuancePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_InternationalMember" name="InternationalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_InventoryTextualAbstract" name="InventoryTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_IrsLimitationForEmployeesRightToAcquireClassCommonStockUnderEspp" name="IrsLimitationForEmployeesRightToAcquireClassCommonStockUnderEspp" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_JanuaryFifteenTwoThousandThirteenMember" name="JanuaryFifteenTwoThousandThirteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_KpcbHoldingsIncMember" name="KpcbHoldingsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_LargestCustomerAccountingForMostRevenueMember" name="LargestCustomerAccountingForMostRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_LineOfCreditFacilityExtensionTerm" name="LineOfCreditFacilityExtensionTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_LondonInterbankOfferedRateLiborOrBaseRateMember" name="LondonInterbankOfferedRateLiborOrBaseRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_LongLivedAssetsAbstract" name="LongLivedAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" name="LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="enph_LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInYearFour" name="LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="enph_LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInYearThree" name="LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="enph_LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInYearTwo" name="LongTermDebtGrossMaturitiesRepaymentsOfPrincipalInYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="enph_LongTermDebtTextualAbstract" name="LongTermDebtTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_LongTermPurchaseCommitmentTimePeriodMaximum" name="LongTermPurchaseCommitmentTimePeriodMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_MicroinvertersMember" name="MicroinvertersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_NetRevenueMember" name="NetRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_NumberOfCustomersConsideredToGiveRiseToConcentrationRisk" name="NumberOfCustomersConsideredToGiveRiseToConcentrationRisk" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_OfferingCostsNotYetPaid" name="OfferingCostsNotYetPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="enph_OfferingPeriodMaximum" name="OfferingPeriodMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_OrganizationAndDescriptionOfBusinessTextualAbstract" name="OrganizationAndDescriptionOfBusinessTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_OtherCountryMember" name="OtherCountryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_OtherEstimatedOfferingCosts" name="OtherEstimatedOfferingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="enph_PreferredStockWarrantsValuationAssumptionsTableTextBlock" name="PreferredStockWarrantsValuationAssumptionsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_PrimeRateMember" name="PrimeRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_ProceedsFromIssuanceOfCommonStockGross" name="ProceedsFromIssuanceOfCommonStockGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="enph_ProductWarrantyCoveragePeriod" name="ProductWarrantyCoveragePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_ProjectedEbitdaAndRevenueToMeetAdditionalTermLoansAchievementPercentage" name="ProjectedEbitdaAndRevenueToMeetAdditionalTermLoansAchievementPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="enph_PurchaseObligationCancelableAmount" name="PurchaseObligationCancelableAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="enph_PurchaseObligationCancellationPenaltyMaximum" name="PurchaseObligationCancellationPenaltyMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="enph_RangeFiveMember" name="RangeFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_RangeFourMember" name="RangeFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_RangeOneMember" name="RangeOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_RangeSevenMember" name="RangeSevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_RangeSixMember" name="RangeSixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_RangeThreeMember" name="RangeThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_RangeTwoMember" name="RangeTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_ReclassificationOfPreferredStockWarrantLiability" name="ReclassificationOfPreferredStockWarrantLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="enph_RevenueNetPercentage" name="RevenueNetPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_RevenueRecognitionRecognitionPeriod" name="RevenueRecognitionRecognitionPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_RisksAndUncertaintiesInEntitysBusinessPolicyPolicyTextBlock" name="RisksAndUncertaintiesInEntitysBusinessPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_SecondLargestCustomerAccountingForMostRevenueMember" name="SecondLargestCustomerAccountingForMostRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_ServiceMember" name="ServiceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValueValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValueValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="enph_ShareBasedCompensationArrangementByShareBasedPaymentAwardEvergreenShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEvergreenShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="enph_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationInYears" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationInYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_ShareBasedCompensationArrangementByShareBasedPaymentAwardLookBackFeaturePeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLookBackFeaturePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingBasisForDeterminingAggregateIntrinsicValueCompanysSharePricePerShare" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingBasisForDeterminingAggregateIntrinsicValueCompanysSharePricePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="enph_StockIssuedDuringPeriodShareConversionOfConvertiblePreferredStockIntoCommonStock" name="StockIssuedDuringPeriodShareConversionOfConvertiblePreferredStockIntoCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_StockIssuedDuringPeriodSharesConversionOfConvertibleSecuritiesAndPaidInKindInterest" name="StockIssuedDuringPeriodSharesConversionOfConvertibleSecuritiesAndPaidInKindInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="enph_StockIssuedDuringPeriodSharesToRelatedParties" name="StockIssuedDuringPeriodSharesToRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStockInToCommonStock" name="StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStockInToCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_StockholdersEquityTextualAbstract" name="StockholdersEquityTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_ThirdGenerationMember" name="ThirdGenerationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_ThirdLargestCustomerAccountingForMostRevenueMember" name="ThirdLargestCustomerAccountingForMostRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_TwoThousandAndElevenPlanMember" name="TwoThousandAndElevenPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_TwoThousandSixPlanMember" name="TwoThousandSixPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_UnderwritersDiscountsAndCommissions" name="UnderwritersDiscountsAndCommissions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_VariableRateAxis" name="VariableRateAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_VariableRateDomain" name="VariableRateDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_WarrantConvertibleCommonStockMember" name="WarrantConvertibleCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_WarrantsFairValueAmountOutstanding" name="WarrantsFairValueAmountOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="enph_WarrantsToPurchasePreferredStockIssueOneMember" name="WarrantsToPurchasePreferredStockIssueOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_WarrantsToPurchasePreferredStockIssueTwoMember" name="WarrantsToPurchasePreferredStockIssueTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="enph_WarrantyExpenseDerivedFromInventoryWriteDown" name="WarrantyExpenseDerivedFromInventoryWriteDown" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_WarrantyObligationsTextualAbstract" name="WarrantyObligationsTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="enph_WellsFargoBankMember" name="WellsFargoBankMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
