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  <xs:element id="es_NSTARElectricDebentures5.20Member" abstract="true" name="NSTARElectricDebentures5.20Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_NSTARElectricDebentures3.25Member" abstract="true" name="NSTARElectricDebentures3.25Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_PSNHSeriesYFirstMortgageBondsMember" abstract="true" name="PSNHSeriesYFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EversourceParentSeriesHHSeniorNotesMember" abstract="true" name="EversourceParentSeriesHHSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EversourceParent3.15SeriesHSeniorNotesMember" abstract="true" name="EversourceParent3.15SeriesHSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EversourceParent0.80SeriesQSeniorNotesMember" abstract="true" name="EversourceParent0.80SeriesQSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_NSTARGasSeriesYFirstMortgageBondsMember" abstract="true" name="NSTARGasSeriesYFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_NSTARGasSeriesZFirstMortgageBondsMember" abstract="true" name="NSTARGasSeriesZFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_NSTARGasSeriesRFirstMortgageBondsMember" abstract="true" name="NSTARGasSeriesRFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_YankeeGasSeriesYFirstMortgageBondsMember" abstract="true" name="YankeeGasSeriesYFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_YankeeGasSeriesZFirstMortgageBondsMember" abstract="true" name="YankeeGasSeriesZFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_YankeeGasSeriesMFirstMortgageBondsMember" abstract="true" name="YankeeGasSeriesMFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EGMASeriesFFirstMortgageBondsMember" abstract="true" name="EGMASeriesFFirstMortgageBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EversourceParentMember" abstract="true" name="EversourceParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EGMASeriesMember" abstract="true" name="EGMASeriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_LongTermDebtMaturitiesRepaymentsOfPrincipalTotal" abstract="false" name="LongTermDebtMaturitiesRepaymentsOfPrincipalTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearOne" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearTwo" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearThree" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearFour" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearFive" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaidYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaidAfterYearFive" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaidAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RateReductionBondsPrincipalAndInterestPaymentsToBePaid" abstract="false" name="RateReductionBondsPrincipalAndInterestPaymentsToBePaid" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanBenefitsPaidLumpSum" abstract="false" name="DefinedBenefitPlanBenefitsPaidLumpSum" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanPaymentsSerp" abstract="false" name="DefinedBenefitPlanPaymentsSerp" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_ChangeInLiabilityDueToTransferOfEmployees" abstract="false" name="ChangeInLiabilityDueToTransferOfEmployees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanReclassificationToAssetsHeldForSaleObligation" abstract="false" name="DefinedBenefitPlanReclassificationToAssetsHeldForSaleObligation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanReclassificationFromAssetsHeldForSaleObligation" abstract="false" name="DefinedBenefitPlanReclassificationFromAssetsHeldForSaleObligation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_ChangeInAssetsDueToTransferOfEmployees" abstract="false" name="ChangeInAssetsDueToTransferOfEmployees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanReclassificationToAssetsHeldForSalePensionPlanAssets" abstract="false" name="DefinedBenefitPlanReclassificationToAssetsHeldForSalePensionPlanAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanReclassificationFromAssetsHeldForSalePensionPlanAssets" abstract="false" name="DefinedBenefitPlanReclassificationFromAssetsHeldForSalePensionPlanAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_Pre65PlanMember" abstract="true" name="Pre65PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_Post65PlanMember" abstract="true" name="Post65PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EversourceServicePensionAndPBOPPlansMember" abstract="true" name="EversourceServicePensionAndPBOPPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedBenefitPlanIncreaseOfLiabilityAsAResultOfChangeInDiscountRate" abstract="false" name="DefinedBenefitPlanIncreaseOfLiabilityAsAResultOfChangeInDiscountRate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanLossDueToUpdatedCensusData" abstract="false" name="DefinedBenefitPlanLossDueToUpdatedCensusData" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanLossDueToSalaryScaleAssumption" abstract="false" name="DefinedBenefitPlanLossDueToSalaryScaleAssumption" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanDecreaseOfLiabilityAsAResultOfChangeInDiscountRate" abstract="false" name="DefinedBenefitPlanDecreaseOfLiabilityAsAResultOfChangeInDiscountRate" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanHealthCareTrendRate" abstract="false" name="DefinedBenefitPlanHealthCareTrendRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="es_AssumedRateOfReturnOnDefinedBenefitPlanAssets" abstract="false" name="AssumedRateOfReturnOnDefinedBenefitPlanAssets" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="es_SupplementalPensionProgramSERPMember" abstract="true" name="SupplementalPensionProgramSERPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedBenefitPlanPrepaidAssets" abstract="false" name="DefinedBenefitPlanPrepaidAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RelatedIntercompanyAllocationsofDefinedBenefitExpense" abstract="false" name="RelatedIntercompanyAllocationsofDefinedBenefitExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_GainLossArisingDuringYearRegulatoryAsset" abstract="false" name="GainLossArisingDuringYearRegulatoryAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_LossesReclassifedFromRegAssetPreTax" abstract="false" name="LossesReclassifedFromRegAssetPreTax" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_GainLossReclassifiedAsHeldForSale" abstract="false" name="GainLossReclassifiedAsHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_GainLossReclassifiedFromHeldForSale" abstract="false" name="GainLossReclassifiedFromHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_SettlementLossOfRegulatoryAsset" abstract="false" name="SettlementLossOfRegulatoryAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_PriorServiceCostCreditArisingDuringPeriodRegulatoryAsset" abstract="false" name="PriorServiceCostCreditArisingDuringPeriodRegulatoryAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_AmortizationPriorServiceCostFromRegAsset" abstract="false" name="AmortizationPriorServiceCostFromRegAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_PriorServiceCostReclassificationAsHeldForSale" abstract="false" name="PriorServiceCostReclassificationAsHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_PriorServiceCostReclassificationFromHeldForSale" abstract="false" name="PriorServiceCostReclassificationFromHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RegulatoryAssetGainsLossesBeforeTax" abstract="false" name="RegulatoryAssetGainsLossesBeforeTax" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_RegulatoryAssetPriorServiceCost" abstract="false" name="RegulatoryAssetPriorServiceCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassifiedAsHeldForSale" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassifiedAsHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassifiedFromHeldForSale" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossReclassifiedFromHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_OtherComprehensiveIncomeLossDefinedBenefitPlanCostReclassifiedAsHeldForSale" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanCostReclassifiedAsHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_OtherComprehensiveIncomeLossDefinedBenefitPlanCostReclassifiedFromHeldForSale" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanCostReclassifiedFromHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanEquitySecuritiesGlobalMember" abstract="true" name="DefinedBenefitPlanEquitySecuritiesGlobalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedBenefitPlanEquitySecuritiesEmergingMarketsMember" abstract="true" name="DefinedBenefitPlanEquitySecuritiesEmergingMarketsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedBenefitPlanDebtSecurityPublicHighYieldFixedIncomeMember" abstract="true" name="DefinedBenefitPlanDebtSecurityPublicHighYieldFixedIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedBenefitPlanDebtSecurityPrivateDebtMember" abstract="true" name="DefinedBenefitPlanDebtSecurityPrivateDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_TotalAssetsBefore401hMember" abstract="true" name="TotalAssetsBefore401hMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_Assetsrelatedto401hMember" abstract="true" name="Assetsrelatedto401hMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedBenefitPlanFairValueofPlanAssetsUncategorized" abstract="false" name="DefinedBenefitPlanFairValueofPlanAssetsUncategorized" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedBenefitPlanPlanAssetsPendingPurchase" abstract="false" name="DefinedBenefitPlanPlanAssetsPendingPurchase" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="es_DefinedBenefitPlanPlanAssetsPendingPurchasesAndPendingRedemptionSettlement" abstract="false" name="DefinedBenefitPlanPlanAssetsPendingPurchasesAndPendingRedemptionSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DefinedContributionPlan401KMember" abstract="true" name="DefinedContributionPlan401KMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_DefinedContributionPlanAlternateContribution401KMember" abstract="true" name="DefinedContributionPlanAlternateContribution401KMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EmployeesMember" abstract="true" name="EmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_BoardMembersMember" abstract="true" name="BoardMembersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_PeriodofGradedVestingScheduleUnderLongTermIncentiveProgram" abstract="false" name="PeriodofGradedVestingScheduleUnderLongTermIncentiveProgram" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="es_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedOutstandingNumber" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedOutstandingNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="es_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpectedToVest" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExpectedToVest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="es_EffectiveTaxRateReconciliationPercentTaxEffectonShareBasedPayments" abstract="false" name="EffectiveTaxRateReconciliationPercentTaxEffectonShareBasedPayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="es_EffectiveIncomeTaxRateReconciliationTaxDeficiencyExcessStockBenefitAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxDeficiencyExcessStockBenefitAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedandVestedNumber" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedandVestedNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="es_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsSharesIssuedinPeriod" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsSharesIssuedinPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="es_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedandVestedWeightedAverageGrantDateFairValue" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedandVestedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="es_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="es_DeferredCompensationCashBasedArrangementsExpensePertainingToDeferredBenefits" abstract="false" name="DeferredCompensationCashBasedArrangementsExpensePertainingToDeferredBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_EversourceInvestmentLLCMember" abstract="true" name="EversourceInvestmentLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_ValuationAllowanceDeferredTaxAssetDecreaseAmount" abstract="false" name="ValuationAllowanceDeferredTaxAssetDecreaseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_ValuationAllowanceDeferredTaxAssetIncreaseAmount" abstract="false" name="ValuationAllowanceDeferredTaxAssetIncreaseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_IncomeTaxExpenseBenefitTaxCreditsReturnToProvisionProcess" abstract="false" name="IncomeTaxExpenseBenefitTaxCreditsReturnToProvisionProcess" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_IncomeTaxExpenseBenefitStateTaxReturnToProvisionProcess" abstract="false" name="IncomeTaxExpenseBenefitStateTaxReturnToProvisionProcess" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_IncomeTaxExpenseBenefitFromContingentLiabilityIncreaseDecrease" abstract="false" name="IncomeTaxExpenseBenefitFromContingentLiabilityIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_EquityMethodInvestmentPreTaxCharge" abstract="false" name="EquityMethodInvestmentPreTaxCharge" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_TaxCreditAndOperatingLossCarryforwardValuationAllowance" abstract="false" name="TaxCreditAndOperatingLossCarryforwardValuationAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="es_IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsAndOther" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsAndOther" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="es_EversourceElectricDistributionMember" abstract="true" name="EversourceElectricDistributionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_NaturalGasDistributionMember" abstract="true" name="NaturalGasDistributionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_EversourceElectricTransmissionMember" abstract="true" name="EversourceElectricTransmissionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_WaterDistributionSegmentMember" abstract="true" name="WaterDistributionSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_ResidentialMember" abstract="true" name="ResidentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_CommercialMember" abstract="true" name="CommercialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_IndustrialMember" abstract="true" name="IndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_TotalRetailSalesRevenueMember" abstract="true" name="TotalRetailSalesRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_WholesaleTransmissionRevenueMember" abstract="true" name="WholesaleTransmissionRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_WholesaleMarketSalesRevenueMember" abstract="true" name="WholesaleMarketSalesRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_OtherRevenueAdjustmentsfromContractswithCustomersMember" abstract="true" name="OtherRevenueAdjustmentsfromContractswithCustomersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_YankeeGasNSTARGasAndEGMAMember" abstract="true" name="YankeeGasNSTARGasAndEGMAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_NaturalGasTransitionServiceTransactionCosts" abstract="false" name="NaturalGasTransitionServiceTransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_EversourceWaterMember" abstract="true" name="EversourceWaterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_OperationCostsAndExpensesExcludingStorm" abstract="false" name="OperationCostsAndExpensesExcludingStorm" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_StormCostsAndExpenses" abstract="false" name="StormCostsAndExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_OperationUncollectibleExpensesIncurred" abstract="false" name="OperationUncollectibleExpensesIncurred" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationEquity" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationDebt" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationPreTaxIncome" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationPreTaxIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationRestrictedCash" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRestrictedCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationAccountsUnbilledRevenues" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAccountsUnbilledRevenues" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationRegulatoryAssets" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRegulatoryAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_DisposalGroupIncludingDiscontinuedOperationRegulatoryLiabilities" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRegulatoryLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_WaterAcquisitionsMember" abstract="true" name="WaterAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="es_GoodwillReclassifiedAsHeldForSale" abstract="false" name="GoodwillReclassifiedAsHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_GoodwillRounding" abstract="false" name="GoodwillRounding" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_GainLossOnSettlementOfAcquisitionAndIntegrationCosts" abstract="false" name="GainLossOnSettlementOfAcquisitionAndIntegrationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_OtherNet" abstract="false" name="OtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_CapitalContributionsToSubsidiaries" abstract="false" name="CapitalContributionsToSubsidiaries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_IncreaseDecreaseInNotesReceivableFromAffiliates" abstract="false" name="IncreaseDecreaseInNotesReceivableFromAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="es_InterestPaidExcludingCapitalizedInterestOperatingActivitiesAbstract" abstract="true" name="InterestPaidExcludingCapitalizedInterestOperatingActivitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
</xs:schema>
