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  <xs:element id="itri_DeviceSolutionsMember" abstract="true" name="DeviceSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="itri_Authorizedsharereservereductioninstockoptionsorshareappreciationrightsavailableforissueconversionratio" abstract="false" name="Authorizedsharereservereductioninstockoptionsorshareappreciationrightsavailableforissueconversionratio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="itri_DepreciationAndAmortizationExpenseBySegmentAbstract" abstract="true" name="DepreciationAndAmortizationExpenseBySegmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_DisposalGroupincludingdiscontinuedoperationsForeignCurrencyTranslationGainsLossestaxprovisionbenefit" abstract="false" name="DisposalGroupincludingdiscontinuedoperationsForeignCurrencyTranslationGainsLossestaxprovisionbenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_StockIncentivePlanMember" abstract="true" name="StockIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="itri_IntangibleAssetsAbstract" abstract="true" name="IntangibleAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_VestedButNotReleasedMember" abstract="true" name="VestedButNotReleasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="itri_VestedAndReleasedMember" abstract="true" name="VestedAndReleasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="itri_GoodwillExcludingNonGoodwillIntangiblesAbstract" abstract="true" name="GoodwillExcludingNonGoodwillIntangiblesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="itri_ClassOfWarrantOrRightPremiumPercentage" abstract="false" name="ClassOfWarrantOrRightPremiumPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="itri_A2021ProjectsMember" abstract="true" name="A2021ProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="itri_Authorizedsharereservereductioninawardsotherthanstockoptionsorshareappreciationrightsavailableforissueconversionratio" abstract="false" name="Authorizedsharereservereductioninawardsotherthanstockoptionsorshareappreciationrightsavailableforissueconversionratio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="itri_GainLossOnRestructuring" abstract="false" name="GainLossOnRestructuring" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="itri_ProductWarrantyExpenseBenefit" abstract="false" name="ProductWarrantyExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
