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  <xs:element id="itri_ProductWarrantyExpenseBenefit" abstract="false" name="ProductWarrantyExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleLiabilitiesAccretionRemainderofFiscalYear" abstract="false" name="FiniteLivedIntangibleLiabilitiesAccretionRemainderofFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_Authorizedsharereservereductioninawardsotherthanstockoptionsorshareappreciationrightsavailableforissueconversionratio" abstract="false" name="Authorizedsharereservereductioninawardsotherthanstockoptionsorshareappreciationrightsavailableforissueconversionratio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember" abstract="true" name="AssetImpairmentAndNetGainLossOnSaleOrDisposalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_CreditFacilityAdditionalInformationAbstract" abstract="true" name="CreditFacilityAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_UnrestrictedStockAwardsCompensationExpense" abstract="false" name="UnrestrictedStockAwardsCompensationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_IncreaseDecreaseInWarranty" abstract="false" name="IncreaseDecreaseInWarranty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleLiabilitiesYearFour" abstract="false" name="FiniteLivedIntangibleLiabilitiesYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_DerivativePurchasePrice" abstract="false" name="DerivativePurchasePrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleLiabilitiesAccumulatedAccretion" abstract="false" name="FiniteLivedIntangibleLiabilitiesAccumulatedAccretion" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_CurrencySwap1Member" abstract="true" name="CurrencySwap1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_InterestRateTypeDomain" abstract="true" name="InterestRateTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_OutcomesSegmentMember" abstract="true" name="OutcomesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_DepreciationExpenseTableTextBlock" abstract="false" name="DepreciationExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleAssetsAmortizationExpenseNetYearFive" abstract="false" name="FiniteLivedIntangibleAssetsAmortizationExpenseNetYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleLiabilitiesAccretionYearFive" abstract="false" name="FiniteLivedIntangibleLiabilitiesAccretionYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_DeviceSolutionsMember" abstract="true" name="DeviceSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_CashReceiptsPaymentsForRestructuring" abstract="false" name="CashReceiptsPaymentsForRestructuring" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleLiabilitiesAccretionYearTwo" abstract="false" name="FiniteLivedIntangibleLiabilitiesAccretionYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_SeniorNoteAdditionalInformationAbstract" abstract="true" name="SeniorNoteAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_SummaryofintangibleassetaccountactivityTableTextBlock" abstract="false" name="SummaryofintangibleassetaccountactivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="itri_LongTermPerformanceRestrictedStockAwardMember" abstract="true" name="LongTermPerformanceRestrictedStockAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_OtherIncomeExpenseMember" abstract="true" name="OtherIncomeExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleAssetsAmortizationExpenseNetYearFour" abstract="false" name="FiniteLivedIntangibleAssetsAmortizationExpenseNetYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_CurrencySwap2Member" abstract="true" name="CurrencySwap2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_FinitelivedintangibleliabilitiesGross" abstract="false" name="FinitelivedintangibleliabilitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_DocumentInformationAbstract" abstract="true" name="DocumentInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_AlternateBaseRate3Member" abstract="true" name="AlternateBaseRate3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_UsdDenominatedTermLoanMember" abstract="true" name="UsdDenominatedTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_DerivativeActivityVolumeTypeDomain" abstract="true" name="DerivativeActivityVolumeTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_ContractwithCustomerOtheradjustments" abstract="false" name="ContractwithCustomerOtheradjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_NetworkedSolutionsSegmentMember" abstract="true" name="NetworkedSolutionsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_OperatingLeaseRightOfUseAssetsAmortization" abstract="false" name="OperatingLeaseRightOfUseAssetsAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_ComputersAndSoftwareGross" abstract="false" name="ComputersAndSoftwareGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_AlternateBaseRate1Member" abstract="true" name="AlternateBaseRate1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_WarrantyExpenseTableTextBlock" abstract="false" name="WarrantyExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="itri_TotalIntangibleAssetsAbstract" abstract="true" name="TotalIntangibleAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_UnsecuredMulticurrencyRevolvingLinesOfCreditMember" abstract="true" name="UnsecuredMulticurrencyRevolvingLinesOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_StockRepurchaseAuthorizationAbstract" abstract="true" name="StockRepurchaseAuthorizationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_InterestRateTypeAxis" abstract="true" name="InterestRateTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="itri_AlternateBaseRateMember" abstract="true" name="AlternateBaseRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_AccumulatedNetGainLossfromDerivativeandNonderivativeInstrumentsDesignatedasHedgingInstrumentsMember" abstract="true" name="AccumulatedNetGainLossfromDerivativeandNonderivativeInstrumentsDesignatedasHedgingInstrumentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_CustomerAMember" abstract="true" name="CustomerAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_RestructuringProjectTable" abstract="true" name="RestructuringProjectTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="itri_ContractwithCustomernet" abstract="false" name="ContractwithCustomernet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_GoodwillExcludingNonGoodwillIntangiblesAbstract" abstract="true" name="GoodwillExcludingNonGoodwillIntangiblesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_BuildingsFurnitureAndImprovements" abstract="false" name="BuildingsFurnitureAndImprovements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleLiabilitiesNet" abstract="false" name="FiniteLivedIntangibleLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_CreditFacilityMember" abstract="true" name="CreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_OtherCountriesMember" abstract="true" name="OtherCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="itri_DepreciationAndAmortizationExpenseBySegmentAbstract" abstract="true" name="DepreciationAndAmortizationExpenseBySegmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_EffectOfChangeInExchangeRates" abstract="false" name="EffectOfChangeInExchangeRates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_DerivativeActivityVolumeTypeAxis" abstract="true" name="DerivativeActivityVolumeTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="itri_DepreciationAndAmortizationExpenseAssociatedWithSegmentsTableTextBlock" abstract="false" name="DepreciationAndAmortizationExpenseAssociatedWithSegmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
</xs:schema>
