<?xml version="1.0" encoding="utf-8"?>
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.xbrl.org/2003/linkbase">
  <roleRef roleURI="http://ithacaenergyplc.com/xbrl/2023/roles/ProfitOrLoss" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ProfitOrLoss" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://ithacaenergyplc.com/xbrl/2023/roles/StatementOfComprehensiveIncome" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#StatementOfComprehensiveIncome" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://ithacaenergyplc.com/xbrl/2023/roles/StatementOfFinancialPosition" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#StatementOfFinancialPosition" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://ithacaenergyplc.com/xbrl/2023/roles/StatementOfCashFlows" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#StatementOfCashFlows" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <calculationLink xlink:role="http://ithacaenergyplc.com/xbrl/2023/roles/ProfitOrLoss" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GrossProfit" xlink:label="ifrs-full_GrossProfit" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Revenue" xlink:label="ifrs-full_Revenue" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CostOfSales" xlink:label="ifrs-full_CostOfSales" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:label="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:label="ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdministrativeExpense" xlink:label="ifrs-full_AdministrativeExpense" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherGainsLosses" xlink:label="ifrs-full_OtherGainsLosses" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_GainOnBargainPurchase" xlink:label="ithacaenergyplc_GainOnBargainPurchase" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncome" xlink:label="ifrs-full_FinanceIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceCosts" xlink:label="ifrs-full_FinanceCosts" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_GrossProfit" xlink:to="ifrs-full_Revenue" order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_GrossProfit" xlink:to="ifrs-full_CostOfSales" order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ifrs-full_GrossProfit" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ifrs-full_AdministrativeExpense" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ifrs-full_OtherGainsLosses" order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="ithacaenergyplc_GainOnBargainPurchase" order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossBeforeTax" xlink:to="ifrs-full_FinanceIncome" order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossBeforeTax" xlink:to="ifrs-full_FinanceCosts" order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossBeforeTax" xlink:to="ifrs-full_ProfitLossFromOperatingActivities" order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:to="ifrs-full_ProfitLossBeforeTax" order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations" order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
  </calculationLink>
  <calculationLink xlink:role="http://ithacaenergyplc.com/xbrl/2023/roles/StatementOfComprehensiveIncome" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="ifrs-full_OtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" xlink:label="ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" xlink:label="ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" xlink:label="ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_OtherComprehensiveIncome" xlink:to="ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_OtherComprehensiveIncome" xlink:to="ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_OtherComprehensiveIncome" xlink:to="ifrs-full_OtherComprehensiveIncomeBeforeTaxCashFlowHedges" order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ComprehensiveIncome" xlink:to="ifrs-full_OtherComprehensiveIncome" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_ComprehensiveIncome" xlink:to="ifrs-full_ProfitLoss" order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
  </calculationLink>
  <calculationLink xlink:role="http://ithacaenergyplc.com/xbrl/2023/roles/StatementOfFinancialPosition" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets" xlink:label="ifrs-full_CurrentAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="ifrs-full_TradeAndOtherCurrentReceivables" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_CurrentDecommissioningReceivable" xlink:label="ithacaenergyplc_CurrentDecommissioningReceivable" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentPrepayments" xlink:label="ifrs-full_CurrentPrepayments" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Inventories" xlink:label="ifrs-full_Inventories" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentDerivativeFinancialAssets" xlink:label="ifrs-full_CurrentDerivativeFinancialAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TangibleExplorationAndEvaluationAssets" xlink:label="ifrs-full_TangibleExplorationAndEvaluationAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="ifrs-full_PropertyPlantAndEquipment" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentDerivativeFinancialAssets" xlink:label="ifrs-full_NoncurrentDerivativeFinancialAssets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Goodwill" xlink:label="ifrs-full_Goodwill" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_NonCurrentDecommissioningReceivable" xlink:label="ithacaenergyplc_NonCurrentDecommissioningReceivable" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities" xlink:label="ifrs-full_CurrentLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:label="ifrs-full_CurrentDerivativeFinancialLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShorttermBorrowings" xlink:label="ifrs-full_ShorttermBorrowings" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayables" xlink:label="ifrs-full_TradeAndOtherCurrentPayables" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLeaseLiabilities" xlink:label="ifrs-full_CurrentLeaseLiabilities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_CurrentContingentAndDeferredConsideration" xlink:label="ithacaenergyplc_CurrentContingentAndDeferredConsideration" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxLiabilities" xlink:label="ifrs-full_CurrentTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="ifrs-full_NoncurrentLiabilities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_NonCurrentContingentAndDeferredConsideration" xlink:label="ithacaenergyplc_NonCurrentContingentAndDeferredConsideration" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities" xlink:label="ifrs-full_NoncurrentDerivativeFinancialLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LongtermBorrowings" xlink:label="ifrs-full_LongtermBorrowings" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLeaseLiabilities" xlink:label="ifrs-full_NoncurrentLeaseLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetAssetsLiabilities" xlink:label="ifrs-full_NetAssetsLiabilities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfSharebasedPayments" xlink:label="ifrs-full_ReserveOfSharebasedPayments" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfCashFlowHedges" xlink:label="ifrs-full_ReserveOfCashFlowHedges" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_CostOfHedgingReserve" xlink:label="ithacaenergyplc_CostOfHedgingReserve" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetainedEarnings" xlink:label="ifrs-full_RetainedEarnings" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SharePremium" xlink:label="ifrs-full_SharePremium" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_CapitalContributionReserve" xlink:label="ithacaenergyplc_CapitalContributionReserve" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TreasuryShares" xlink:label="ifrs-full_TreasuryShares" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_CashAndCashEquivalents" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_TradeAndOtherCurrentReceivables" order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentAssets" xlink:to="ithacaenergyplc_CurrentDecommissioningReceivable" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_CurrentPrepayments" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_Inventories" order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_CurrentDerivativeFinancialAssets" order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_TangibleExplorationAndEvaluationAssets" order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_PropertyPlantAndEquipment" order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_DeferredTaxAssets" order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_NoncurrentDerivativeFinancialAssets" order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_Goodwill" order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ithacaenergyplc_NonCurrentDecommissioningReceivable" order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Assets" xlink:to="ifrs-full_NoncurrentAssets" order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Assets" xlink:to="ifrs-full_CurrentAssets" order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_CurrentDerivativeFinancialLiabilities" order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_ShorttermBorrowings" order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_TradeAndOtherCurrentPayables" order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts" order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_CurrentLeaseLiabilities" order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ithacaenergyplc_CurrentContingentAndDeferredConsideration" order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_CurrentTaxLiabilities" order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ithacaenergyplc_NonCurrentContingentAndDeferredConsideration" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ifrs-full_NoncurrentDerivativeFinancialLiabilities" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ifrs-full_LongtermBorrowings" order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ifrs-full_NoncurrentLeaseLiabilities" order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Liabilities" xlink:to="ifrs-full_NoncurrentLiabilities" order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Liabilities" xlink:to="ifrs-full_CurrentLiabilities" order="30" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NetAssetsLiabilities" xlink:to="ifrs-full_Liabilities" order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_NetAssetsLiabilities" xlink:to="ifrs-full_Assets" order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_ReserveOfSharebasedPayments" order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_ReserveOfCashFlowHedges" order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ithacaenergyplc_CostOfHedgingReserve" order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_RetainedEarnings" order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_IssuedCapital" order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_SharePremium" order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ithacaenergyplc_CapitalContributionReserve" order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_TreasuryShares" order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
  </calculationLink>
  <calculationLink xlink:role="http://ithacaenergyplc.com/xbrl/2023/roles/StatementOfCashFlows" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:label="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForExplorationAndEvaluationExpenses" xlink:label="ithacaenergyplc_AdjustmentsForExplorationAndEvaluationExpenses" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:label="ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForReductionIncreaseInContingentDeferredConsideration" xlink:label="ithacaenergyplc_AdjustmentsForReductionIncreaseInContingentDeferredConsideration" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForAmortisationExpense" xlink:label="ifrs-full_AdjustmentsForAmortisationExpense" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForRevaluationOfFinancialInstruments" xlink:label="ithacaenergyplc_AdjustmentsForRevaluationOfFinancialInstruments" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForGainOnBargainPurchase" xlink:label="ithacaenergyplc_AdjustmentsForGainOnBargainPurchase" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForHedgingResets" xlink:label="ithacaenergyplc_AdjustmentsForHedgingResets" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForAccretion" xlink:label="ithacaenergyplc_AdjustmentsForAccretion" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForFinanceCosts" xlink:label="ifrs-full_AdjustmentsForFinanceCosts" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForInterestIncome" xlink:label="ifrs-full_AdjustmentsForInterestIncome" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForInterestOnRelatedPartyLoan" xlink:label="ithacaenergyplc_AdjustmentsForInterestOnRelatedPartyLoan" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:label="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForSharebasedPayments" xlink:label="ifrs-full_AdjustmentsForSharebasedPayments" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_AdjustmentsForDecommissioningExpenditure" xlink:label="ithacaenergyplc_AdjustmentsForDecommissioningExpenditure" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations" xlink:label="ifrs-full_CashFlowsFromUsedInOperations" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_SettlementOfForeignExchangeAndCommodityDerivativeFinancialInstrumentsClassifiedAsOperatingActivities" xlink:label="ithacaenergyplc_SettlementOfForeignExchangeAndCommodityDerivativeFinancialInstrumentsClassifiedAsOperatingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:label="ifrs-full_InterestReceivedClassifiedAsOperatingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_CapitalExpenditureClassifiedAsInvestingActivities" xlink:label="ithacaenergyplc_CapitalExpenditureClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_DeferredConsiderationPaymentsClassifiedAsInvestingActivities" xlink:label="ithacaenergyplc_DeferredConsiderationPaymentsClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_ContingentConsiderationPaymentsClassifiedAsInvestingActivities" xlink:label="ithacaenergyplc_ContingentConsiderationPaymentsClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_InterestRateSwapsClassifiedAsFinancingActivities" xlink:label="ithacaenergyplc_InterestRateSwapsClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsForShareIssueCosts" xlink:label="ifrs-full_PaymentsForShareIssueCosts" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromIssuingShares" xlink:label="ifrs-full_ProceedsFromIssuingShares" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_PaymentsForLeaseLiabilitiesPrincipalClassifiedAsFinancingActivities" xlink:label="ithacaenergyplc_PaymentsForLeaseLiabilitiesPrincipalClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_LoanRepaymentThirdPartyClassifiedAsFinancingActivities" xlink:label="ithacaenergyplc_LoanRepaymentThirdPartyClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_LoanRepaymentShareholderClassifiedAsFinancingActivities" xlink:label="ithacaenergyplc_LoanRepaymentShareholderClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_DrawdownOfRBLLoanClassifiedAsFinancingActivities" xlink:label="ithacaenergyplc_DrawdownOfRBLLoanClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="21380057TNFLXPXBIP34-2023-12-31.xsd#ithacaenergyplc_DrawdownOfBpLoanClassifiedAsFinancingActivities" xlink:label="ithacaenergyplc_DrawdownOfBpLoanClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_ProfitLossBeforeTax" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForExplorationAndEvaluationExpenses" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForReductionIncreaseInContingentDeferredConsideration" order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForAmortisationExpense" order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForRevaluationOfFinancialInstruments" order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForGainOnBargainPurchase" order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForHedgingResets" order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForAccretion" order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForFinanceCosts" order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForInterestIncome" order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForInterestOnRelatedPartyLoan" order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForSharebasedPayments" order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ithacaenergyplc_AdjustmentsForDecommissioningExpenditure" order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInOperations" order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="ithacaenergyplc_SettlementOfForeignExchangeAndCommodityDerivativeFinancialInstrumentsClassifiedAsOperatingActivities" order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="ifrs-full_InterestReceivedClassifiedAsOperatingActivities" order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="ithacaenergyplc_CapitalExpenditureClassifiedAsInvestingActivities" order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="ithacaenergyplc_DeferredConsiderationPaymentsClassifiedAsInvestingActivities" order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="ithacaenergyplc_ContingentConsiderationPaymentsClassifiedAsInvestingActivities" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ifrs-full_InterestPaidClassifiedAsFinancingActivities" order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ithacaenergyplc_InterestRateSwapsClassifiedAsFinancingActivities" order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ifrs-full_PaymentsForShareIssueCosts" order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ifrs-full_ProceedsFromIssuingShares" order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ithacaenergyplc_PaymentsForLeaseLiabilitiesPrincipalClassifiedAsFinancingActivities" order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ithacaenergyplc_LoanRepaymentThirdPartyClassifiedAsFinancingActivities" order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ithacaenergyplc_LoanRepaymentShareholderClassifiedAsFinancingActivities" order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="-1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ithacaenergyplc_DrawdownOfRBLLoanClassifiedAsFinancingActivities" order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ithacaenergyplc_DrawdownOfBpLoanClassifiedAsFinancingActivities" order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities" order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities" order="30" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
  </calculationLink>
</linkbase>