<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.njresources.com/role/Acquisition" xlink:href="njr-20180331.xsd#Acquisition" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/AcquisitionDetails" xlink:href="njr-20180331.xsd#AcquisitionDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommitmentsAndContingentLiabilities" xlink:href="njr-20180331.xsd#CommitmentsAndContingentLiabilities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommitmentsAndContingentLiabilitiesLegalProceedingsDetails" xlink:href="njr-20180331.xsd#CommitmentsAndContingentLiabilitiesLegalProceedingsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommitmentsAndContingentLiabilitiesScheduleOfFutureCommittedExpensesDetails" xlink:href="njr-20180331.xsd#CommitmentsAndContingentLiabilitiesScheduleOfFutureCommittedExpensesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommitmentsAndContingentLiabilitiesTables" xlink:href="njr-20180331.xsd#CommitmentsAndContingentLiabilitiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommonStockEquity" xlink:href="njr-20180331.xsd#CommonStockEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommonStockEquityAccumulatedOtherComprehensiveIncomeLossDetails" xlink:href="njr-20180331.xsd#CommonStockEquityAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommonStockEquityChangeInCommonStockEquityDetails" xlink:href="njr-20180331.xsd#CommonStockEquityChangeInCommonStockEquityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommonStockEquityNarrativeDetails" xlink:href="njr-20180331.xsd#CommonStockEquityNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CommonStockEquityTables" xlink:href="njr-20180331.xsd#CommonStockEquityTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:href="njr-20180331.xsd#CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical" xlink:href="njr-20180331.xsd#CondensedConsolidatedBalanceSheetsUnauditedParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:href="njr-20180331.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" xlink:href="njr-20180331.xsd#CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" xlink:href="njr-20180331.xsd#CondensedConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited" xlink:href="njr-20180331.xsd#CondensedConsolidatedStatementsOfOperationsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/Debt" xlink:href="njr-20180331.xsd#Debt" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DebtCreditFacilitiesDetails" xlink:href="njr-20180331.xsd#DebtCreditFacilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DebtDetails" xlink:href="njr-20180331.xsd#DebtDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DebtLongTermDebtDetails" xlink:href="njr-20180331.xsd#DebtLongTermDebtDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DebtTables" xlink:href="njr-20180331.xsd#DebtTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstruments" xlink:href="njr-20180331.xsd#DerivativeInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsBalanceSheetRelatedDisclosuresDetails" xlink:href="njr-20180331.xsd#DerivativeInstrumentsBalanceSheetRelatedDisclosuresDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsBrokerMarginDepositsDetails" xlink:href="njr-20180331.xsd#DerivativeInstrumentsBrokerMarginDepositsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsCreditRiskExposureDetails" xlink:href="njr-20180331.xsd#DerivativeInstrumentsCreditRiskExposureDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsIncomeStatementRelatedDisclosuresDetails" xlink:href="njr-20180331.xsd#DerivativeInstrumentsIncomeStatementRelatedDisclosuresDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsOffsettingOfAssetsAndLiabilitiesDetails" xlink:href="njr-20180331.xsd#DerivativeInstrumentsOffsettingOfAssetsAndLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsTables" xlink:href="njr-20180331.xsd#DerivativeInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DerivativeInstrumentsVolumeDetails" xlink:href="njr-20180331.xsd#DerivativeInstrumentsVolumeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/Details" xlink:href="njr-20180331.xsd#Details" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/Disposition" xlink:href="njr-20180331.xsd#Disposition" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DispositionDetails" xlink:href="njr-20180331.xsd#DispositionDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/DocumentAndEntityInformation" xlink:href="njr-20180331.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/EarningsPerShare" xlink:href="njr-20180331.xsd#EarningsPerShare" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/EarningsPerShareDetails" xlink:href="njr-20180331.xsd#EarningsPerShareDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/EarningsPerShareTables" xlink:href="njr-20180331.xsd#EarningsPerShareTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/EmployeeBenefitPlans" xlink:href="njr-20180331.xsd#EmployeeBenefitPlans" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/EmployeeBenefitPlansDetails" xlink:href="njr-20180331.xsd#EmployeeBenefitPlansDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/EmployeeBenefitPlansTables" xlink:href="njr-20180331.xsd#EmployeeBenefitPlansTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/FairValue" xlink:href="njr-20180331.xsd#FairValue" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/FairValueHierarchyDetails" xlink:href="njr-20180331.xsd#FairValueHierarchyDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/FairValueTables" xlink:href="njr-20180331.xsd#FairValueTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/IncomeTaxes" xlink:href="njr-20180331.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/IncomeTaxesDetails" xlink:href="njr-20180331.xsd#IncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/IncomeTaxesTables" xlink:href="njr-20180331.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/InvestmentsInEquityMethodInvestees" xlink:href="njr-20180331.xsd#InvestmentsInEquityMethodInvestees" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/InvestmentsInEquityMethodInvesteesTables" xlink:href="njr-20180331.xsd#InvestmentsInEquityMethodInvesteesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/NatureOfBusiness" xlink:href="njr-20180331.xsd#NatureOfBusiness" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/NatureOfBusinessDetails" xlink:href="njr-20180331.xsd#NatureOfBusinessDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/Regulation" xlink:href="njr-20180331.xsd#Regulation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/RegulationRegulatoryAssetsAndLiabilitiesDetails" xlink:href="njr-20180331.xsd#RegulationRegulatoryAssetsAndLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/RegulationRegulatoryFilingsDetails" xlink:href="njr-20180331.xsd#RegulationRegulatoryFilingsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/RegulationTables" xlink:href="njr-20180331.xsd#RegulationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/RelatedPartyTransactions" xlink:href="njr-20180331.xsd#RelatedPartyTransactions" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/RelatedPartyTransactionsDetails" xlink:href="njr-20180331.xsd#RelatedPartyTransactionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/RelatedPartyTransactionsTables" xlink:href="njr-20180331.xsd#RelatedPartyTransactionsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsData" xlink:href="njr-20180331.xsd#ReportingSegmentAndOtherOperationsData" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataNetFinancialEarningsLossReconciliationDetails" xlink:href="njr-20180331.xsd#ReportingSegmentAndOtherOperationsDataNetFinancialEarningsLossReconciliationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataReconciliationOfSegmentAssetsToConsolidatedDetails" xlink:href="njr-20180331.xsd#ReportingSegmentAndOtherOperationsDataReconciliationOfSegmentAssetsToConsolidatedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataReconciliationOfSegmentIncomeToConsolidatedDetails" xlink:href="njr-20180331.xsd#ReportingSegmentAndOtherOperationsDataReconciliationOfSegmentIncomeToConsolidatedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataTables" xlink:href="njr-20180331.xsd#ReportingSegmentAndOtherOperationsDataTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesAssetsHeldForSaleDetails" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesAssetsHeldForSaleDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesAvailableForSaleSecuritiesDetails" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesAvailableForSaleSecuritiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesCustomerAccountsReceivableDetails" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesCustomerAccountsReceivableDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesGasInStorageDetails" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesGasInStorageDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesLoanReceivableDetails" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesLoanReceivableDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesSalesTaxAccountingDetails" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesSalesTaxAccountingDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="njr-20180331.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/Acquisition" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/AcquisitionDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommitmentsAndContingentLiabilities" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommitmentsAndContingentLiabilitiesLegalProceedingsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommitmentsAndContingentLiabilitiesScheduleOfFutureCommittedExpensesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommitmentsAndContingentLiabilitiesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommonStockEquity" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommonStockEquityAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_fd5fd01d-ccd5-2fe2-e9ee-a9a84a842378" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_84c98a8a-c01f-0f38-3ce9-e36c906305cf" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTax_fd5fd01d-ccd5-2fe2-e9ee-a9a84a842378" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_84c98a8a-c01f-0f38-3ce9-e36c906305cf" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax" xlink:label="loc_njr_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax_de7ace9c-1ad3-4af8-1f2a-ce950ac6538d" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTax_fd5fd01d-ccd5-2fe2-e9ee-a9a84a842378" xlink:to="loc_njr_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax_de7ace9c-1ad3-4af8-1f2a-ce950ac6538d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_72d12753-e25c-cdc0-88b6-98db8d7b7fae" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_5c35b823-5d05-b5b2-7111-6db3c8991e56" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_72d12753-e25c-cdc0-88b6-98db8d7b7fae" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_5c35b823-5d05-b5b2-7111-6db3c8991e56" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_c3eeeb3c-9d95-bebb-bd5b-7c14211e12fb" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_72d12753-e25c-cdc0-88b6-98db8d7b7fae" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_c3eeeb3c-9d95-bebb-bd5b-7c14211e12fb" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommonStockEquityChangeInCommonStockEquityDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommonStockEquityNarrativeDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CommonStockEquityTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_159dcb00-b17e-17db-7098-be4159799459" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_159dcb00-b17e-17db-7098-be4159799459" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_9a73c768-7e07-f56f-7aba-2b93110d3715" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_9a73c768-7e07-f56f-7aba-2b93110d3715" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedDeferredInvestmentTaxCredit" xlink:label="loc_us-gaap_AccumulatedDeferredInvestmentTaxCredit_6eebbda9-fc00-b1df-2bd5-a05f308ab6e0" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_AccumulatedDeferredInvestmentTaxCredit_6eebbda9-fc00-b1df-2bd5-a05f308ab6e0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredRevenueNoncurrent" xlink:label="loc_us-gaap_DeferredRevenueNoncurrent_11e98ceb-5737-f44d-6a16-2d8b64b1228d" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_DeferredRevenueNoncurrent_11e98ceb-5737-f44d-6a16-2d8b64b1228d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_3ffd0622-1cf7-dfe7-dae7-2020e36f2f4a" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_3ffd0622-1cf7-dfe7-dae7-2020e36f2f4a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_06e578e9-829a-6464-82a6-339f8f2261c1" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_06e578e9-829a-6464-82a6-339f8f2261c1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_9a02138f-e52f-25fa-014e-0405ac9ddb27" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_9a02138f-e52f-25fa-014e-0405ac9ddb27" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityNoncurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_630ce5df-98d8-d515-0f5c-663a0889bd56" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_630ce5df-98d8-d515-0f5c-663a0889bd56" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetRetirementObligationsNoncurrent" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_1f4fb651-4881-fed9-af88-845715d74664" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_1f4fb651-4881-fed9-af88-845715d74664" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_f234998c-5e05-09d0-d53e-5c44423c97c0" xlink:type="locator" />
    <link:calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_ce6ab6ce-f8d5-dad6-a84c-2c96c7d59f75" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_f234998c-5e05-09d0-d53e-5c44423c97c0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_159dcb00-b17e-17db-7098-be4159799459" xlink:to="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_13aaa34e-8d7d-009a-bd8a-20360af7ca09" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_13aaa34e-8d7d-009a-bd8a-20360af7ca09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_c4493b41-4418-ed41-2f06-05ff9c61369f" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_ShortTermBorrowings_c4493b41-4418-ed41-2f06-05ff9c61369f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GasPurchasePayableCurrent" xlink:label="loc_us-gaap_GasPurchasePayableCurrent_46aa6905-b0fa-5b29-ab6f-7aecf9416e61" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_GasPurchasePayableCurrent_46aa6905-b0fa-5b29-ab6f-7aecf9416e61" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_7a72b51a-735c-1ad4-bd3f-d9bcf2d6a26d" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_AccountsPayableCurrent_7a72b51a-735c-1ad4-bd3f-d9bcf2d6a26d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_495c9f1e-8fa4-03c6-5d47-0519291fc4e7" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_495c9f1e-8fa4-03c6-5d47-0519291fc4e7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_bd3a7ae4-0e62-b7df-2312-729d1644863d" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_bd3a7ae4-0e62-b7df-2312-729d1644863d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryLiabilityCurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_4aca1554-73cb-0edc-0b8c-fd23543ae37d" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_4aca1554-73cb-0edc-0b8c-fd23543ae37d" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_CleanEnergyProgramCurrent" xlink:label="loc_njr_CleanEnergyProgramCurrent_3c8524e0-a6ee-28d2-c821-ce950d071bdc" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_njr_CleanEnergyProgramCurrent_3c8524e0-a6ee-28d2-c821-ce950d071bdc" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_02b1756e-a27a-df0b-cb87-4e42d7ab59c6" xlink:type="locator" />
    <link:calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_02b1756e-a27a-df0b-cb87-4e42d7ab59c6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CustomerAdvancesAndDepositsCurrent" xlink:label="loc_us-gaap_CustomerAdvancesAndDepositsCurrent_3f37bf70-9499-d653-3d8f-38f96766ed4f" xlink:type="locator" />
    <link:calculationArc order="10" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_CustomerAdvancesAndDepositsCurrent_3f37bf70-9499-d653-3d8f-38f96766ed4f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_e6ef8548-561d-f305-8be8-d844cbea62e2" xlink:type="locator" />
    <link:calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_e6ef8548-561d-f305-8be8-d844cbea62e2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesOfBusinessTransferredUnderContractualArrangementCurrent" xlink:label="loc_us-gaap_LiabilitiesOfBusinessTransferredUnderContractualArrangementCurrent_c49409d5-af8e-b54f-7068-1491754f42de" xlink:type="locator" />
    <link:calculationArc order="12" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_f5e246cf-e80f-d00b-c8ed-4796aa2df4b4" xlink:to="loc_us-gaap_LiabilitiesOfBusinessTransferredUnderContractualArrangementCurrent_c49409d5-af8e-b54f-7068-1491754f42de" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalizationLongtermDebtAndEquity" xlink:label="loc_us-gaap_CapitalizationLongtermDebtAndEquity_93e79619-cf16-19ce-bf14-34f1c90cc06a" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_159dcb00-b17e-17db-7098-be4159799459" xlink:to="loc_us-gaap_CapitalizationLongtermDebtAndEquity_93e79619-cf16-19ce-bf14-34f1c90cc06a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CapitalizationLongtermDebtAndEquity_93e79619-cf16-19ce-bf14-34f1c90cc06a" xlink:to="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_c3f7606a-e7e9-61d5-b60b-b4b059f68b26" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:to="loc_us-gaap_CommonStockValue_c3f7606a-e7e9-61d5-b60b-b4b059f68b26" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_41895068-9590-2880-73df-521995865843" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_41895068-9590-2880-73df-521995865843" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_04f0961a-a0bc-88cf-6658-3f950da4a458" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_04f0961a-a0bc-88cf-6658-3f950da4a458" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_40678492-c421-af67-b276-f663f9ff2f98" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:to="loc_us-gaap_TreasuryStockValue_40678492-c421-af67-b276-f663f9ff2f98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_065cb284-7fca-cc9b-5752-2feaf74d0011" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_4b158f76-5f04-5e4d-ead3-d80e1f9943db" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_065cb284-7fca-cc9b-5752-2feaf74d0011" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_f68a050d-d5b6-1395-99ff-ed06c9a31fb4" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CapitalizationLongtermDebtAndEquity_93e79619-cf16-19ce-bf14-34f1c90cc06a" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_f68a050d-d5b6-1395-99ff-ed06c9a31fb4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_058e01e4-b9a1-623e-29f5-1b5c79bf095a" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_159dcb00-b17e-17db-7098-be4159799459" xlink:to="loc_us-gaap_CommitmentsAndContingencies_058e01e4-b9a1-623e-29f5-1b5c79bf095a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_c6057b1d-6685-8249-2051-6c57f3a16a9e" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_c6057b1d-6685-8249-2051-6c57f3a16a9e" xlink:to="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetsNoncurrent" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_5f59bb76-086c-b40c-c9d5-6de36890630c" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_5f59bb76-086c-b40c-c9d5-6de36890630c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_16051231-04bd-ea94-b23d-97f0ca04a36d" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_16051231-04bd-ea94-b23d-97f0ca04a36d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_9b27fab9-d497-627b-4cfb-6b585220b978" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_9b27fab9-d497-627b-4cfb-6b585220b978" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecuritiesNoncurrent" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesNoncurrent_0ab9456b-855b-4b5f-17aa-958b2bf5fece" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesNoncurrent_0ab9456b-855b-4b5f-17aa-958b2bf5fece" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_cf3b9d2e-b42f-76bb-8c85-9bcfc4c76505" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:to="loc_us-gaap_EquityMethodInvestments_cf3b9d2e-b42f-76bb-8c85-9bcfc4c76505" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_1fe06082-076b-052d-6e2e-930afe9d6b2d" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrent_c2a54b62-8f9f-23d7-42a9-40a903409813" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_1fe06082-076b-052d-6e2e-930afe9d6b2d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_c6057b1d-6685-8249-2051-6c57f3a16a9e" xlink:to="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_07da1db4-2708-4446-4250-1fdd5956185e" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_07da1db4-2708-4446-4250-1fdd5956185e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableGrossCurrent" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_6ec0b2e4-97da-0489-cfea-58f8b5967f1b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_6ec0b2e4-97da-0489-cfea-58f8b5967f1b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_0af4cf4f-dd4e-4a27-50f3-b3447f0d9b89" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_0af4cf4f-dd4e-4a27-50f3-b3447f0d9b89" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_98ae2a02-ad2a-749c-0963-d2d6767543d9" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_98ae2a02-ad2a-749c-0963-d2d6767543d9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_daa06a81-b926-da9a-fbbf-8528d98637b7" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_daa06a81-b926-da9a-fbbf-8528d98637b7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EnergyRelatedInventoryNaturalGasInStorage" xlink:label="loc_us-gaap_EnergyRelatedInventoryNaturalGasInStorage_03e78846-24fc-c35e-7c3a-034096025f1f" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_EnergyRelatedInventoryNaturalGasInStorage_03e78846-24fc-c35e-7c3a-034096025f1f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherInventory" xlink:label="loc_us-gaap_OtherInventory_ee5fcc65-14f6-852b-5f38-597fb7bb1135" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_OtherInventory_ee5fcc65-14f6-852b-5f38-597fb7bb1135" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidTaxes" xlink:label="loc_us-gaap_PrepaidTaxes_02645454-7101-7c15-39a1-317d5d74cc69" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_PrepaidTaxes_02645454-7101-7c15-39a1-317d5d74cc69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_84c72a40-7d41-ae62-5328-afed8a5c4ed6" xlink:type="locator" />
    <link:calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_84c72a40-7d41-ae62-5328-afed8a5c4ed6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations" xlink:label="loc_us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations_31ae7309-d615-7094-2a1f-91fedeb4d16d" xlink:type="locator" />
    <link:calculationArc order="10" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_ReceivablesFromBrokersDealersAndClearingOrganizations_31ae7309-d615-7094-2a1f-91fedeb4d16d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_1cb4a384-e314-2300-ad55-c1ed289c8f7a" xlink:type="locator" />
    <link:calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_OtherAssetsCurrent_1cb4a384-e314-2300-ad55-c1ed289c8f7a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent" xlink:label="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:type="locator" />
    <link:calculationArc order="12" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_8a47066b-3628-88d1-49db-ed09aecc7fc7" xlink:to="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_1944a381-5c4e-ce3c-9111-13ccd1c639db" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_c6057b1d-6685-8249-2051-6c57f3a16a9e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_1944a381-5c4e-ce3c-9111-13ccd1c639db" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_1944a381-5c4e-ce3c-9111-13ccd1c639db" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_cd4ed727-3509-88c6-9b11-9334ca438963" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_cd4ed727-3509-88c6-9b11-9334ca438963" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_0dd831ab-f4c4-8052-7b7d-6da19536d072" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_0dd831ab-f4c4-8052-7b7d-6da19536d072" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentOther" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentOther_6079c7d0-bda6-db46-0986-a0baf387f862" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentOther_6079c7d0-bda6-db46-0986-a0baf387f862" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConstructionInProgressGross" xlink:label="loc_us-gaap_ConstructionInProgressGross_594f8c62-c8c5-bd85-818c-71da6f0408d7" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:to="loc_us-gaap_ConstructionInProgressGross_594f8c62-c8c5-bd85-818c-71da6f0408d7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_ed5d8707-4d2f-9a3f-9cc4-eb688cce5e4f" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_1944a381-5c4e-ce3c-9111-13ccd1c639db" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_ed5d8707-4d2f-9a3f-9cc4-eb688cce5e4f" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_AccumulatedDepreciationDepletionandAmortizationOtherPropertyPlantandEquipment" xlink:label="loc_njr_AccumulatedDepreciationDepletionandAmortizationOtherPropertyPlantandEquipment_b69f3f22-4c49-152d-6b2d-ce950beffce4" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_1944a381-5c4e-ce3c-9111-13ccd1c639db" xlink:to="loc_njr_AccumulatedDepreciationDepletionandAmortizationOtherPropertyPlantandEquipment_b69f3f22-4c49-152d-6b2d-ce950beffce4" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_dd2e9db6-10f9-d78a-ba84-b18268245a83" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_dd2e9db6-10f9-d78a-ba84-b18268245a83" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrealizedGainLossOnDerivatives" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_dde99a81-dd7e-8567-385b-abc551560117" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_dde99a81-dd7e-8567-385b-abc551560117" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_d5dace7e-16a2-02a1-4993-85329c91fc1e" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_d5dace7e-16a2-02a1-4993-85329c91fc1e" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_37b0c31d-5d8b-0577-dfd9-aa56a79334e3" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_37b0c31d-5d8b-0577-dfd9-aa56a79334e3" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_AmortizationOfAcquiredContracts" xlink:label="loc_njr_AmortizationOfAcquiredContracts_BB505A620EFAC7AEF4E3544308180273" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_njr_AmortizationOfAcquiredContracts_BB505A620EFAC7AEF4E3544308180273" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction" xlink:label="loc_us-gaap_IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction_5d347332-ff1f-3b91-1116-f661e854baf3" xlink:type="locator" />
    <link:calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction_5d347332-ff1f-3b91-1116-f661e854baf3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_3bb02469-191c-4baa-c8ee-e08be21b11bb" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_3bb02469-191c-4baa-c8ee-e08be21b11bb" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_f75d01b7-d271-b07d-c4a7-6ae60293303d" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_f75d01b7-d271-b07d-c4a7-6ae60293303d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForEnvironmentalLiabilities" xlink:label="loc_us-gaap_PaymentsForEnvironmentalLiabilities_f378bf9b-c094-5ae2-1590-7a7f9038b1aa" xlink:type="locator" />
    <link:calculationArc order="9" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_PaymentsForEnvironmentalLiabilities_f378bf9b-c094-5ae2-1590-7a7f9038b1aa" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_9b8323ad-1658-fe33-490d-bb35957a8b02" xlink:type="locator" />
    <link:calculationArc order="10" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_9b8323ad-1658-fe33-490d-bb35957a8b02" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetRetirementObligationCashPaidToSettle" xlink:label="loc_us-gaap_AssetRetirementObligationCashPaidToSettle_e0e2dc51-ca88-816e-3a8c-ae7e91a54651" xlink:type="locator" />
    <link:calculationArc order="11" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_AssetRetirementObligationCashPaidToSettle_e0e2dc51-ca88-816e-3a8c-ae7e91a54651" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitContributions" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_97281d9e-e18f-b4df-4a03-14d62471c428" xlink:type="locator" />
    <link:calculationArc order="12" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_97281d9e-e18f-b4df-4a03-14d62471c428" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_94d761b7-b8f1-3ba3-90b8-1443c3232b73" xlink:type="locator" />
    <link:calculationArc order="13" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_94d761b7-b8f1-3ba3-90b8-1443c3232b73" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapital" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:type="locator" />
    <link:calculationArc order="14" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_dd4bfa5e-1979-c817-e8a9-371104c0d4f7" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_dd4bfa5e-1979-c817-e8a9-371104c0d4f7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_bf3f9720-ba63-7ecd-52ae-e754a6f349db" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_bf3f9720-ba63-7ecd-52ae-e754a6f349db" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRecoverableRefundableGasCosts" xlink:label="loc_us-gaap_IncreaseDecreaseInRecoverableRefundableGasCosts_10ff3b91-25f6-264f-2f40-f03971053b5b" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInRecoverableRefundableGasCosts_10ff3b91-25f6-264f-2f40-f03971053b5b" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_IncreaseDecreaseInPrepaidAndAccruedTaxes" xlink:label="loc_njr_IncreaseDecreaseInPrepaidAndAccruedTaxes_6b5bf6f0-6f5c-7acc-f46f-ce950b91f486" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_njr_IncreaseDecreaseInPrepaidAndAccruedTaxes_6b5bf6f0-6f5c-7acc-f46f-ce950b91f486" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_a8b6fe35-4809-bddf-7ef6-3144a6c89165" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_a8b6fe35-4809-bddf-7ef6-3144a6c89165" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInCustomerDeposits" xlink:label="loc_us-gaap_IncreaseDecreaseInCustomerDeposits_ea904916-fe1c-c552-3186-fc0701133a38" xlink:type="locator" />
    <link:calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInCustomerDeposits_ea904916-fe1c-c552-3186-fc0701133a38" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_ac9066b4-6e40-13ed-8628-1a20304926d8" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_ac9066b4-6e40-13ed-8628-1a20304926d8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayable_6ce40b00-91f5-07a6-a951-00b091243114" xlink:type="locator" />
    <link:calculationArc order="8" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayable_6ce40b00-91f5-07a6-a951-00b091243114" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInPayablesToBrokerDealers" xlink:label="loc_us-gaap_IncreaseDecreaseInPayablesToBrokerDealers_5faea5f4-d216-68e7-77b8-783d4714825b" xlink:type="locator" />
    <link:calculationArc order="9" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapital_6c5ef6ac-0d12-b149-6c27-b013e773a274" xlink:to="loc_us-gaap_IncreaseDecreaseInPayablesToBrokerDealers_5faea5f4-d216-68e7-77b8-783d4714825b" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_9c014c8e-ef65-6055-d342-3e048173d471" xlink:type="locator" />
    <link:calculationArc order="15" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_9c014c8e-ef65-6055-d342-3e048173d471" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_5ffad1f9-ed26-c38a-cad9-7d2f16245ec2" xlink:type="locator" />
    <link:calculationArc order="16" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_5ffad1f9-ed26-c38a-cad9-7d2f16245ec2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_0427ef0c-6a82-1061-c648-71b3a1a70634" xlink:type="locator" />
    <link:calculationArc order="17" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_0427ef0c-6a82-1061-c648-71b3a1a70634" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_DeferredIncomeTaxBenefitTaxLegislation" xlink:label="loc_njr_DeferredIncomeTaxBenefitTaxLegislation_5F0A8F4F6CC69AE71310DEA2D129AED2" xlink:type="locator" />
    <link:calculationArc order="18" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_444b1ac7-f47a-4ce3-0caa-537f7e4ab8c3" xlink:to="loc_njr_DeferredIncomeTaxBenefitTaxLegislation_5F0A8F4F6CC69AE71310DEA2D129AED2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_dd2e9db6-10f9-d78a-ba84-b18268245a83" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_fee12b15-6b42-6245-2e2f-ff030b98332c" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_fee12b15-6b42-6245-2e2f-ff030b98332c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquireOtherProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireOtherProductiveAssets_8bd7b051-5be0-703c-6635-0cad16b52005" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_PaymentsToAcquireOtherProductiveAssets_8bd7b051-5be0-703c-6635-0cad16b52005" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment_92ad6dde-9959-b7a7-eeba-d94d5349d589" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment_92ad6dde-9959-b7a7-eeba-d94d5349d589" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForRemovalCosts" xlink:label="loc_us-gaap_PaymentsForRemovalCosts_b924d65f-81d6-b94d-79ee-eaebf1bbfe18" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_PaymentsForRemovalCosts_b924d65f-81d6-b94d-79ee-eaebf1bbfe18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquireOtherInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireOtherInvestments_197915f7-be4a-7489-7a63-0586d02cfc0f" xlink:type="locator" />
    <link:calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_PaymentsToAcquireOtherInvestments_197915f7-be4a-7489-7a63-0586d02cfc0f" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital" xlink:label="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_1ae5d9ad-7c85-22bf-cb6d-785e5a91ede1" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_1ae5d9ad-7c85-22bf-cb6d-785e5a91ede1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_bc66fcc7-4638-7e93-2948-b833e774a337" xlink:type="locator" />
    <link:calculationArc order="7" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_bc66fcc7-4638-7e93-2948-b833e774a337" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="loc_us-gaap_IncreaseDecreaseInRestrictedCash_37775d39-399b-0ffb-48fe-db3396bf06a8" xlink:type="locator" />
    <link:calculationArc order="8" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_IncreaseDecreaseInRestrictedCash_37775d39-399b-0ffb-48fe-db3396bf06a8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_d3d89aab-5be8-f6a4-66e9-41f55e0839cd" xlink:type="locator" />
    <link:calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_d3d89aab-5be8-f6a4-66e9-41f55e0839cd" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_f7ed6106-862d-edb5-3fd1-677e7651af64" xlink:type="locator" />
    <link:calculationArc order="10" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_f7ed6106-862d-edb5-3fd1-677e7651af64" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_1b49b102-31cf-7322-08b6-a997061a74c1" xlink:type="locator" />
    <link:calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_70319186-e7bd-7189-88d2-eba26fb93350" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_1b49b102-31cf-7322-08b6-a997061a74c1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_dd2e9db6-10f9-d78a-ba84-b18268245a83" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_27f3e695-baed-1adc-cc35-793c3b76e4f9" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_27f3e695-baed-1adc-cc35-793c3b76e4f9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_2b72fe5f-3c0e-d5e0-8e5c-ad01818e58e5" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_2b72fe5f-3c0e-d5e0-8e5c-ad01818e58e5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities" xlink:label="loc_us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities_193c3107-4c02-4e59-455b-f7b5ca76f2c0" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities_193c3107-4c02-4e59-455b-f7b5ca76f2c0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_6f80ca9e-82d0-f056-a403-c4914c1ce379" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_6f80ca9e-82d0-f056-a403-c4914c1ce379" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_dbbd5d91-eb58-fa81-2753-d9ddf4ada4c1" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_dbbd5d91-eb58-fa81-2753-d9ddf4ada4c1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_8a1490c4-32d9-5132-1fe2-2675a45abdae" xlink:type="locator" />
    <link:calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_8a1490c4-32d9-5132-1fe2-2675a45abdae" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_cf22d061-7c46-e185-574b-89b7ef77509e" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_cf22d061-7c46-e185-574b-89b7ef77509e" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_ProceedsFromWaiverDiscountIssuanceOfCommonStock" xlink:label="loc_njr_ProceedsFromWaiverDiscountIssuanceOfCommonStock_2D70576766328C072AA3544A08373090" xlink:type="locator" />
    <link:calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_deb49b68-c030-7624-a39d-ea301caa5dbf" xlink:to="loc_njr_ProceedsFromWaiverDiscountIssuanceOfCommonStock_2D70576766328C072AA3544A08373090" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_499015ce-2160-aed2-85a3-080e8c4c6cdf" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_499015ce-2160-aed2-85a3-080e8c4c6cdf" xlink:to="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2a6e77d2-a694-61f8-1c68-085fd849c780" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_499015ce-2160-aed2-85a3-080e8c4c6cdf" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2a6e77d2-a694-61f8-1c68-085fd849c780" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_ab3008c3-c5c2-a86b-0613-39cbd9b94527" xlink:type="locator" />
    <link:calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2a6e77d2-a694-61f8-1c68-085fd849c780" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_ab3008c3-c5c2-a86b-0613-39cbd9b94527" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_2652b636-1a3b-e639-2800-d9ed5b9b4fc0" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2a6e77d2-a694-61f8-1c68-085fd849c780" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_2652b636-1a3b-e639-2800-d9ed5b9b4fc0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_57e8ae74-d8b6-c629-9bee-2d0929cd3999" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2a6e77d2-a694-61f8-1c68-085fd849c780" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_57e8ae74-d8b6-c629-9bee-2d0929cd3999" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0eb47183-f513-314d-ceda-ee2412d9eee8" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0eb47183-f513-314d-ceda-ee2412d9eee8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_9894e895-7695-402a-9f03-08d60b7373b8" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0eb47183-f513-314d-ceda-ee2412d9eee8" xlink:to="loc_us-gaap_OperatingIncomeLoss_9894e895-7695-402a-9f03-08d60b7373b8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedAndUnregulatedOperatingRevenue" xlink:label="loc_us-gaap_RegulatedAndUnregulatedOperatingRevenue_593653f0-5123-9f01-2abc-54ff3e3ebd67" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_9894e895-7695-402a-9f03-08d60b7373b8" xlink:to="loc_us-gaap_RegulatedAndUnregulatedOperatingRevenue_593653f0-5123-9f01-2abc-54ff3e3ebd67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RegulatedOperatingRevenueGas" xlink:label="loc_us-gaap_RegulatedOperatingRevenueGas_23953339-09ea-434d-b9f2-ced0858d9352" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RegulatedAndUnregulatedOperatingRevenue_593653f0-5123-9f01-2abc-54ff3e3ebd67" xlink:to="loc_us-gaap_RegulatedOperatingRevenueGas_23953339-09ea-434d-b9f2-ced0858d9352" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnregulatedOperatingRevenue" xlink:label="loc_us-gaap_UnregulatedOperatingRevenue_081a7733-e707-638d-415f-b16cae27264a" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RegulatedAndUnregulatedOperatingRevenue_593653f0-5123-9f01-2abc-54ff3e3ebd67" xlink:to="loc_us-gaap_UnregulatedOperatingRevenue_081a7733-e707-638d-415f-b16cae27264a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_9894e895-7695-402a-9f03-08d60b7373b8" xlink:to="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfNaturalGasPurchases" xlink:label="loc_us-gaap_CostOfNaturalGasPurchases_d6044b7f-1252-a9ca-46bd-c274cda40897" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_CostOfNaturalGasPurchases_d6044b7f-1252-a9ca-46bd-c274cda40897" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfGoodsAndServicesEnergyCommoditiesAndServices" xlink:label="loc_us-gaap_CostOfGoodsAndServicesEnergyCommoditiesAndServices_5aff5018-fab0-036f-1ef1-01ec18c216bd" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_CostOfGoodsAndServicesEnergyCommoditiesAndServices_5aff5018-fab0-036f-1ef1-01ec18c216bd" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartiesAmountInCostOfSales" xlink:label="loc_us-gaap_RelatedPartiesAmountInCostOfSales_9e6a2b72-0b1c-6e5c-d8af-ff160f248ff8" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_RelatedPartiesAmountInCostOfSales_9e6a2b72-0b1c-6e5c-d8af-ff160f248ff8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_b0184ecc-12ea-c485-85c0-5fa141798e88" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_b0184ecc-12ea-c485-85c0-5fa141798e88" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UtilitiesOperatingExpenseOther" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseOther_03816264-c2f0-3624-8aaa-103e5b4296bf" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseOther_03816264-c2f0-3624-8aaa-103e5b4296bf" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ExciseAndSalesTaxes" xlink:label="loc_us-gaap_ExciseAndSalesTaxes_71e29b0d-0ac6-52e2-17aa-9fdde2c61ea8" xlink:type="locator" />
    <link:calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_ExciseAndSalesTaxes_71e29b0d-0ac6-52e2-17aa-9fdde2c61ea8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_37b0c31d-5d8b-0577-dfd9-aa56a79334e3" xlink:type="locator" />
    <link:calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_23a4428c-a5e3-3b9c-fc88-04ae5be27ab3" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_37b0c31d-5d8b-0577-dfd9-aa56a79334e3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_7c9599ab-2a77-022c-c720-63fecff6a62c" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0eb47183-f513-314d-ceda-ee2412d9eee8" xlink:to="loc_us-gaap_InterestExpense_7c9599ab-2a77-022c-c720-63fecff6a62c" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_250c3b2f-7db5-7088-68cc-1dd831a2c2d7" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0eb47183-f513-314d-ceda-ee2412d9eee8" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_250c3b2f-7db5-7088-68cc-1dd831a2c2d7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_78b7d85e-8366-fe6d-cb1f-faac5a041b79" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_78b7d85e-8366-fe6d-cb1f-faac5a041b79" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1c520208-bae2-1c51-b4b4-935e91f5fece" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1c520208-bae2-1c51-b4b4-935e91f5fece" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/Debt" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DebtCreditFacilitiesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DebtDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DebtLongTermDebtDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DebtTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstruments" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsBalanceSheetRelatedDisclosuresDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_990d24f7-bf09-089d-4b5d-4490e079db44" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_16051231-04bd-ea94-b23d-97f0ca04a36d" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssets_990d24f7-bf09-089d-4b5d-4490e079db44" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_16051231-04bd-ea94-b23d-97f0ca04a36d" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_84c72a40-7d41-ae62-5328-afed8a5c4ed6" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssets_990d24f7-bf09-089d-4b5d-4490e079db44" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_84c72a40-7d41-ae62-5328-afed8a5c4ed6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_a3ccd28b-d904-f2d6-d218-02006f748e50" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_3ffd0622-1cf7-dfe7-dae7-2020e36f2f4a" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilities_a3ccd28b-d904-f2d6-d218-02006f748e50" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_3ffd0622-1cf7-dfe7-dae7-2020e36f2f4a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_02b1756e-a27a-df0b-cb87-4e42d7ab59c6" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilities_a3ccd28b-d904-f2d6-d218-02006f748e50" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_02b1756e-a27a-df0b-cb87-4e42d7ab59c6" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsBrokerMarginDepositsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsCreditRiskExposureDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsIncomeStatementRelatedDisclosuresDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsOffsettingOfAssetsAndLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_90f482d6-596b-00e0-9584-d3e54f9ea7fb" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_62eb8c59-8348-bd48-683f-a9f1d164ff20" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_90f482d6-596b-00e0-9584-d3e54f9ea7fb" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_62eb8c59-8348-bd48-683f-a9f1d164ff20" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssetFairValueGrossLiability" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossLiability_632d52c4-5035-e390-8263-9001adf1afa1" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_90f482d6-596b-00e0-9584-d3e54f9ea7fb" xlink:to="loc_us-gaap_DerivativeAssetFairValueGrossLiability_632d52c4-5035-e390-8263-9001adf1afa1" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_DerivativeAssetCollateralorEquivalent" xlink:label="loc_njr_DerivativeAssetCollateralorEquivalent_6e8b2b41-c612-3844-0a2f-ce950b148710" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_90f482d6-596b-00e0-9584-d3e54f9ea7fb" xlink:to="loc_njr_DerivativeAssetCollateralorEquivalent_6e8b2b41-c612-3844-0a2f-ce950b148710" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_ac46c5e9-b2d1-5ea2-3800-6931e58c0517" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_5296452d-3ce9-bd2f-2a62-9643805fc6ab" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_ac46c5e9-b2d1-5ea2-3800-6931e58c0517" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_5296452d-3ce9-bd2f-2a62-9643805fc6ab" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_a35dd027-4176-a3b8-92c5-caa74b4d298d" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_ac46c5e9-b2d1-5ea2-3800-6931e58c0517" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_a35dd027-4176-a3b8-92c5-caa74b4d298d" xlink:type="arc" />
    <link:loc xlink:href="njr-20180331.xsd#njr_DerivativeLiabilityCollateralorEquivalent" xlink:label="loc_njr_DerivativeLiabilityCollateralorEquivalent_865898cd-2548-c1ac-1126-ce950bc0ceb0" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_ac46c5e9-b2d1-5ea2-3800-6931e58c0517" xlink:to="loc_njr_DerivativeLiabilityCollateralorEquivalent_865898cd-2548-c1ac-1126-ce950bc0ceb0" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DerivativeInstrumentsVolumeDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/Details" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/Disposition" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DispositionDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/EarningsPerShare" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_223fd9c8-68e8-e433-7c40-f98b238e79de" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_86e61cf2-b7b2-e230-65f1-5a2b152f3a30" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_223fd9c8-68e8-e433-7c40-f98b238e79de" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_86e61cf2-b7b2-e230-65f1-5a2b152f3a30" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_7b1369dd-f813-fe00-b292-96e275568f1b" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_223fd9c8-68e8-e433-7c40-f98b238e79de" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_7b1369dd-f813-fe00-b292-96e275568f1b" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/EarningsPerShareTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/EmployeeBenefitPlans" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/EmployeeBenefitPlansDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_bae25320-9d69-b27b-4684-0b60368d617f" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_89ad3af5-a7a9-a0b6-3ed0-1824210c7a90" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_bae25320-9d69-b27b-4684-0b60368d617f" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_89ad3af5-a7a9-a0b6-3ed0-1824210c7a90" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_50406d00-3746-2e05-3a50-4b2bf529ff14" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_bae25320-9d69-b27b-4684-0b60368d617f" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_50406d00-3746-2e05-3a50-4b2bf529ff14" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_053c4475-6836-cf00-1abe-b15f58110eab" xlink:type="locator" />
    <link:calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_bae25320-9d69-b27b-4684-0b60368d617f" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_053c4475-6836-cf00-1abe-b15f58110eab" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_b2e93b1c-a313-bd95-39dd-1f9d9938b2e9" xlink:type="locator" />
    <link:calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_bae25320-9d69-b27b-4684-0b60368d617f" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_b2e93b1c-a313-bd95-39dd-1f9d9938b2e9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_ab621a8a-0d01-618c-dbe1-c25fa3bace61" xlink:type="locator" />
    <link:calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_bae25320-9d69-b27b-4684-0b60368d617f" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_ab621a8a-0d01-618c-dbe1-c25fa3bace61" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/EmployeeBenefitPlansTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/FairValue" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/FairValueHierarchyDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_b86af6cd-ef38-8a02-5297-9329a99c960d" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_d444402b-921b-e0fa-119c-908ab66850af" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_b86af6cd-ef38-8a02-5297-9329a99c960d" xlink:to="loc_us-gaap_AvailableForSaleSecurities_d444402b-921b-e0fa-119c-908ab66850af" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsFairValueDisclosure" xlink:label="loc_us-gaap_OtherAssetsFairValueDisclosure_669d99b6-7332-5e0a-3f26-9ca86f71b0f5" xlink:type="locator" />
    <link:calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_b86af6cd-ef38-8a02-5297-9329a99c960d" xlink:to="loc_us-gaap_OtherAssetsFairValueDisclosure_669d99b6-7332-5e0a-3f26-9ca86f71b0f5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_990d24f7-bf09-089d-4b5d-4490e079db44" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_b86af6cd-ef38-8a02-5297-9329a99c960d" xlink:to="loc_us-gaap_DerivativeAssets_990d24f7-bf09-089d-4b5d-4490e079db44" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_61bb41c2-5e2c-2804-d184-f566af2acbb1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_a3ccd28b-d904-f2d6-d218-02006f748e50" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_61bb41c2-5e2c-2804-d184-f566af2acbb1" xlink:to="loc_us-gaap_DerivativeLiabilities_a3ccd28b-d904-f2d6-d218-02006f748e50" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/FairValueTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/IncomeTaxes" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/IncomeTaxesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/IncomeTaxesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/InvestmentsInEquityMethodInvestees" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/InvestmentsInEquityMethodInvesteesTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/NatureOfBusiness" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/NatureOfBusinessDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/Regulation" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/RegulationRegulatoryAssetsAndLiabilitiesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/RegulationRegulatoryFilingsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/RegulationTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/RelatedPartyTransactions" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/RelatedPartyTransactionsDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/RelatedPartyTransactionsTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsData" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataNetFinancialEarningsLossReconciliationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_641b1cab-a2b3-2e0e-8389-1455ff3f8581" xlink:type="locator" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataReconciliationOfSegmentAssetsToConsolidatedDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataReconciliationOfSegmentIncomeToConsolidatedDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/ReportingSegmentAndOtherOperationsDataTables" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesAssetsHeldForSaleDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent" xlink:label="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:type="locator" />
    <link:calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_fe5a8e8b-5934-3dc5-9dae-7d40983185cf" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_5551841b-83e0-4644-fca8-d4027d932c0a" xlink:type="locator" />
    <link:calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_5551841b-83e0-4644-fca8-d4027d932c0a" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidTaxes" xlink:label="loc_us-gaap_PrepaidTaxes_02645454-7101-7c15-39a1-317d5d74cc69" xlink:type="locator" />
    <link:calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:to="loc_us-gaap_PrepaidTaxes_02645454-7101-7c15-39a1-317d5d74cc69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_9b27fab9-d497-627b-4cfb-6b585220b978" xlink:type="locator" />
    <link:calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent_83c118c3-6a97-feef-60f1-2b8add52b439" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_9b27fab9-d497-627b-4cfb-6b585220b978" xlink:type="arc" />
  </link:calculationLink>
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesAvailableForSaleSecuritiesDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesCustomerAccountsReceivableDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesGasInStorageDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesLoanReceivableDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesSalesTaxAccountingDetails" xlink:type="extended" />
  <link:calculationLink xlink:role="http://www.njresources.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:type="extended" />
</link:linkbase>
