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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/ConsolidatedStatementOfFinancialPosition" id="ConsolidatedStatementOfFinancialPosition">
          <link:definition>00000002 - Statement - Condensed consolidated Statement of Financial Position (Unaudited)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>00000003 - Statement - Condensed consolidated Statement of Profit or Loss and Other Comprehensive Income (Unaudited)</link:definition>
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          <link:definition>00000004 - Statement - Condensed consolidated Statement of Changes in Equity (Unaudited)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>00000005 - Statement - Condensed consolidated Statement of Changes in Equity (Unaudited) (Parenthetical)</link:definition>
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          <link:definition>00000006 - Statement - Condensed consolidated Statement of Cash Flows (Unaudited)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/BusinessActivity" id="BusinessActivity">
          <link:definition>999007 - Disclosure - Business activity</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999008 - Disclosure - Basis of preparation and significant accounting policies</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/SignificantAccountingJudgementsEstimatesAndAssumptions" id="SignificantAccountingJudgementsEstimatesAndAssumptions">
          <link:definition>999009 - Disclosure - Significant accounting judgements, estimates and assumptions</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/RevenueAndSegmentInformation" id="RevenueAndSegmentInformation">
          <link:definition>999010 - Disclosure - Revenue and segment information</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/CostOfSales" id="CostOfSales">
          <link:definition>999011 - Disclosure - Cost of sales</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/AdministrationExpenses" id="AdministrationExpenses">
          <link:definition>999012 - Disclosure - Administration expenses</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/Share-basedPayments" id="Share-basedPayments">
          <link:definition>999013 - Disclosure - Share-based payments</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/Taxation" id="Taxation">
          <link:definition>999014 - Disclosure - Taxation</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/PropertyPlantAndEquipment" id="PropertyPlantAndEquipment">
          <link:definition>999015 - Disclosure - Property, plant and equipment</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/GoodwillAndIntangibleAssets" id="GoodwillAndIntangibleAssets">
          <link:definition>999016 - Disclosure - Goodwill and intangible assets</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/RelatedPartyReceivables" id="RelatedPartyReceivables">
          <link:definition>999017 - Disclosure - Related party receivables</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/PrepaymentsAndOtherReceivables" id="PrepaymentsAndOtherReceivables">
          <link:definition>999018 - Disclosure - Prepayments and other receivables</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/Inventory" id="Inventory">
          <link:definition>999019 - Disclosure - Inventory</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/DepositsAdvancesAndPrepayments" id="DepositsAdvancesAndPrepayments">
          <link:definition>999020 - Disclosure - Deposits, advances and prepayments</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/OtherCurrentAssets" id="OtherCurrentAssets">
          <link:definition>999021 - Disclosure - Other current assets</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/OtherPayables-Long-term" id="OtherPayables-Long-term">
          <link:definition>999022 - Disclosure - Other payables - long-term</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/TradeAndOtherPayables" id="TradeAndOtherPayables">
          <link:definition>999023 - Disclosure - Trade and other payables</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/Provisions" id="Provisions">
          <link:definition>999024 - Disclosure - Provisions</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/DerivativeFinancialInstruments" id="DerivativeFinancialInstruments">
          <link:definition>999025 - Disclosure - Derivative financial instruments</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LoansAndBorrowings" id="LoansAndBorrowings">
          <link:definition>999026 - Disclosure - Loans and borrowings</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/FinanceIncomeAndCosts" id="FinanceIncomeAndCosts">
          <link:definition>999027 - Disclosure - Finance income and costs</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/CostAccruals" id="CostAccruals">
          <link:definition>999028 - Disclosure - Cost accruals</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/DeferredIncome" id="DeferredIncome">
          <link:definition>999029 - Disclosure - Deferred income</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/ShareCapitalAndSharePremium" id="ShareCapitalAndSharePremium">
          <link:definition>999030 - Disclosure - Share capital and share premium</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/Leases" id="Leases">
          <link:definition>999031 - Disclosure - Leases</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/FinancialInstrumentsAndRiskManagement" id="FinancialInstrumentsAndRiskManagement">
          <link:definition>999032 - Disclosure - Financial instruments and risk management</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LossPerShare" id="LossPerShare">
          <link:definition>999033 - Disclosure - Loss per share</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/SubsequentEvents" id="SubsequentEvents">
          <link:definition>999034 - Disclosure - Subsequent events</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/BasisOfPreparationAndSignificantAccountingPoliciesPolicies" id="BasisOfPreparationAndSignificantAccountingPoliciesPolicies">
          <link:definition>999035 - Disclosure - Basis of preparation and significant accounting policies (Policies)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/BasisOfPreparationAndSignificantAccountingPoliciesTables" id="BasisOfPreparationAndSignificantAccountingPoliciesTables">
          <link:definition>999036 - Disclosure - Basis of preparation and significant accounting policies (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/RevenueAndSegmentInformationTables" id="RevenueAndSegmentInformationTables">
          <link:definition>999037 - Disclosure - Revenue and segment information (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/CostOfSalesTables" id="CostOfSalesTables">
          <link:definition>999038 - Disclosure - Cost of sales (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/AdministrationExpensesTables" id="AdministrationExpensesTables">
          <link:definition>999039 - Disclosure - Administration expenses (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/Share-basedPaymentsTables" id="Share-basedPaymentsTables">
          <link:definition>999040 - Disclosure - Share-based payments (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/TaxationTables" id="TaxationTables">
          <link:definition>999041 - Disclosure - Taxation (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/PropertyPlantAndEquipmentTables" id="PropertyPlantAndEquipmentTables">
          <link:definition>999042 - Disclosure - Property, plant and equipment (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/GoodwillAndIntangibleAssetsTables" id="GoodwillAndIntangibleAssetsTables">
          <link:definition>999043 - Disclosure - Goodwill and intangible assets (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/RelatedPartyReceivablesTables" id="RelatedPartyReceivablesTables">
          <link:definition>999044 - Disclosure - Related party receivables (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/PrepaymentsAndOtherReceivablesTables" id="PrepaymentsAndOtherReceivablesTables">
          <link:definition>999045 - Disclosure - Prepayments and other receivables (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/InventoryTables" id="InventoryTables">
          <link:definition>999046 - Disclosure - Inventory (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/DepositsAdvancesAndPrepaymentsTables" id="DepositsAdvancesAndPrepaymentsTables">
          <link:definition>999047 - Disclosure - Deposits, advances and prepayments (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/OtherCurrentAssetsTables" id="OtherCurrentAssetsTables">
          <link:definition>999048 - Disclosure - Other current assets (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/OtherPayables-Long-termTables" id="OtherPayables-Long-termTables">
          <link:definition>999049 - Disclosure - Other payables - long-term (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/TradeAndOtherPayablesTables" id="TradeAndOtherPayablesTables">
          <link:definition>999050 - Disclosure - Trade and other payables (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/DerivativeFinancialInstrumentsTables" id="DerivativeFinancialInstrumentsTables">
          <link:definition>999051 - Disclosure - Derivative financial instruments (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LoansAndBorrowingsTables" id="LoansAndBorrowingsTables">
          <link:definition>999052 - Disclosure - Loans and borrowings (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/FinanceIncomeAndCostsTables" id="FinanceIncomeAndCostsTables">
          <link:definition>999053 - Disclosure - Finance income and costs (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/CostAccrualsTables" id="CostAccrualsTables">
          <link:definition>999054 - Disclosure - Cost accruals (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/DeferredIncomeTables" id="DeferredIncomeTables">
          <link:definition>999055 - Disclosure - Deferred income (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ShareCapitalAndSharePremiumTables" id="ShareCapitalAndSharePremiumTables">
          <link:definition>999056 - Disclosure - Share capital and share premium (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LeasesTables" id="LeasesTables">
          <link:definition>999057 - Disclosure - Leases (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/FinancialInstrumentsAndRiskManagementTables" id="FinancialInstrumentsAndRiskManagementTables">
          <link:definition>999058 - Disclosure - Financial instruments and risk management (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://fusion-fuel.eu/role/LossPerShareTables" id="LossPerShareTables">
          <link:definition>999059 - Disclosure - Loss per share (Tables)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/BusinessActivityDetailsNarrative" id="BusinessActivityDetailsNarrative">
          <link:definition>999060 - Disclosure - Business activity (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDetailedInformationAboutImpactOnEquityDetails" id="ScheduleOfDetailedInformationAboutImpactOnEquityDetails">
          <link:definition>999061 - Disclosure - Schedule of detailed information about impact on equity (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/BasisOfPreparationAndSignificantAccountingPoliciesDetailsNarrative" id="BasisOfPreparationAndSignificantAccountingPoliciesDetailsNarrative">
          <link:definition>999062 - Disclosure - Basis of preparation and significant accounting policies (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/SignificantAccountingJudgementsEstimatesAndAssumptionsDetailsNarrative" id="SignificantAccountingJudgementsEstimatesAndAssumptionsDetailsNarrative">
          <link:definition>999063 - Disclosure - Significant accounting judgements, estimates and assumptions (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfRevenueDetails" id="ScheduleOfRevenueDetails">
          <link:definition>999064 - Disclosure - Schedule of revenue (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfSegmentInformationDetails" id="ScheduleOfSegmentInformationDetails">
          <link:definition>999065 - Disclosure - Schedule of segment information (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfCostOfSalesDetails" id="ScheduleOfCostOfSalesDetails">
          <link:definition>999066 - Disclosure - Schedule of cost of sales (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/RevenueAndSegmentInformationDetailsNarrative" id="RevenueAndSegmentInformationDetailsNarrative">
          <link:definition>999067 - Disclosure - Revenue and segment information (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfAdministrationExpensesDetails" id="ScheduleOfAdministrationExpensesDetails">
          <link:definition>999068 - Disclosure - Schedule of administration expenses (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfReconciliationToStatementOfProfitOrLossDetails" id="ScheduleOfReconciliationToStatementOfProfitOrLossDetails">
          <link:definition>999069 - Disclosure - Schedule of reconciliation to statement of profit or loss (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/AdministrationExpensesDetailsNarrative" id="AdministrationExpensesDetailsNarrative">
          <link:definition>999070 - Disclosure - Administration expenses (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfShareOptionsDetails" id="ScheduleOfShareOptionsDetails">
          <link:definition>999071 - Disclosure - Schedule of share options (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfElementAdvisoryAgreementDetails" id="ScheduleOfElementAdvisoryAgreementDetails">
          <link:definition>999072 - Disclosure - Schedule of element advisory agreement (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/Share-basedPaymentsDetailsNarrative" id="Share-basedPaymentsDetailsNarrative">
          <link:definition>999073 - Disclosure - Share-based payments (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfIncomeTaxDetails" id="ScheduleOfIncomeTaxDetails">
          <link:definition>999074 - Disclosure - Schedule of income tax (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfPropertyPlantAndEquipmentDetails" id="ScheduleOfPropertyPlantAndEquipmentDetails">
          <link:definition>999075 - Disclosure - Schedule of property plant and equipment (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/TaxationDetailsNarrative" id="TaxationDetailsNarrative">
          <link:definition>999076 - Disclosure - Taxation (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfGoodwillAndIntangibleAssetsDetails" id="ScheduleOfGoodwillAndIntangibleAssetsDetails">
          <link:definition>999077 - Disclosure - Schedule of goodwill and intangible assets (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/PropertyPlantAndEquipmentDetailsNarrative" id="PropertyPlantAndEquipmentDetailsNarrative">
          <link:definition>999078 - Disclosure - Property, plant and equipment (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/GoodwillAndIntangibleAssetsDetailsNarrative" id="GoodwillAndIntangibleAssetsDetailsNarrative">
          <link:definition>999079 - Disclosure - Goodwill and intangible assets (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfRelatedPartyReceivablesDetails" id="ScheduleOfRelatedPartyReceivablesDetails">
          <link:definition>999080 - Disclosure - Schedule of related party receivables (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfPrepaymentsAndOtherReceivablesDetails" id="ScheduleOfPrepaymentsAndOtherReceivablesDetails">
          <link:definition>999081 - Disclosure - Schedule of prepayments and other receivables (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/RelatedPartyReceivablesDetailsNarrative" id="RelatedPartyReceivablesDetailsNarrative">
          <link:definition>999082 - Disclosure - Related party receivables (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfInventoryDetails" id="ScheduleOfInventoryDetails">
          <link:definition>999083 - Disclosure - Schedule of inventory (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDepositsAdvancesAndPrepaymentsCurrentDetails" id="ScheduleOfDepositsAdvancesAndPrepaymentsCurrentDetails">
          <link:definition>999084 - Disclosure - Schedule of deposits, advances, and prepayments current (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDepositsAdvancesAndPrepaymentsNonCurrentDetails" id="ScheduleOfDepositsAdvancesAndPrepaymentsNonCurrentDetails">
          <link:definition>999085 - Disclosure - Schedule of deposits, advances, and prepayments non current (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfOtherCurrentAssetsDetails" id="ScheduleOfOtherCurrentAssetsDetails">
          <link:definition>999086 - Disclosure - Schedule of other current assets (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfOtherPayablesLongTermDetails" id="ScheduleOfOtherPayablesLongTermDetails">
          <link:definition>999087 - Disclosure - Schedule of other payables long term (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/PrepaymentsAndOtherReceivablesDetailsNarrative" id="PrepaymentsAndOtherReceivablesDetailsNarrative">
          <link:definition>999088 - Disclosure - Prepayments and other receivables (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDeferredTaxLiabilityDetails" id="ScheduleOfDeferredTaxLiabilityDetails">
          <link:definition>999089 - Disclosure - Schedule of deferred tax liability (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfTradeAndOtherPayablesDetails" id="ScheduleOfTradeAndOtherPayablesDetails">
          <link:definition>999090 - Disclosure - Schedule of trade and other payables (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/OtherPayables-Long-termDetailsNarrative" id="OtherPayables-Long-termDetailsNarrative">
          <link:definition>999091 - Disclosure - Other payables - long-term (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/TradeAndOtherPayablesDetailsNarrative" id="TradeAndOtherPayablesDetailsNarrative">
          <link:definition>999092 - Disclosure - Trade and other payables (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDerivativeLiabilitiesDetails" id="ScheduleOfDerivativeLiabilitiesDetails">
          <link:definition>999093 - Disclosure - Schedule of derivative liabilities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ProvisionsDetailsNarrative" id="ProvisionsDetailsNarrative">
          <link:definition>999094 - Disclosure - Provisions (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfLoansAndBorrowingsDetails" id="ScheduleOfLoansAndBorrowingsDetails">
          <link:definition>999095 - Disclosure - Schedule of loans and borrowings (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/DerivativeFinancialInstrumentsDetailsNarrative" id="DerivativeFinancialInstrumentsDetailsNarrative">
          <link:definition>999096 - Disclosure - Derivative financial instruments (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfFinanceIncomeAndCostsDetails" id="ScheduleOfFinanceIncomeAndCostsDetails">
          <link:definition>999097 - Disclosure - Schedule of finance income and costs (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfNetFinanceCostsDetails" id="ScheduleOfNetFinanceCostsDetails">
          <link:definition>999098 - Disclosure - Schedule of net finance costs (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LoansAndBorrowingsDetailsNarrative" id="LoansAndBorrowingsDetailsNarrative">
          <link:definition>999099 - Disclosure - Loans and borrowings (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/FinanceIncomeAndCostsDetailsNarrative" id="FinanceIncomeAndCostsDetailsNarrative">
          <link:definition>999100 - Disclosure - Finance income and costs (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfCostAccrualsDetails" id="ScheduleOfCostAccrualsDetails">
          <link:definition>999101 - Disclosure - Schedule of cost accruals (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDeferredIncomeDetails" id="ScheduleOfDeferredIncomeDetails">
          <link:definition>999102 - Disclosure - Schedule of deferred Income (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfShareCapitalDetails" id="ScheduleOfShareCapitalDetails">
          <link:definition>999103 - Disclosure - Schedule of share capital (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfShareCapitalDetailsParenthetical" id="ScheduleOfShareCapitalDetailsParenthetical">
          <link:definition>999104 - Disclosure - Schedule of share capital (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfLeaseLiabilitiesNon-currentAndCurrentDetails" id="ScheduleOfLeaseLiabilitiesNon-currentAndCurrentDetails">
          <link:definition>999105 - Disclosure - Schedule of lease liabilities non-current and current (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfLeaseLiabilitiesDetails" id="ScheduleOfLeaseLiabilitiesDetails">
          <link:definition>999106 - Disclosure - Schedule of lease liabilities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ShareCapitalAndSharePremiumDetailsNarrative" id="ShareCapitalAndSharePremiumDetailsNarrative">
          <link:definition>999107 - Disclosure - Share capital and share premium (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LeasesDetailsNarrative" id="LeasesDetailsNarrative">
          <link:definition>999108 - Disclosure - Leases (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfUnobservableInputsInFairValueMeasurementWithinLevel2Details" id="ScheduleOfUnobservableInputsInFairValueMeasurementWithinLevel2Details">
          <link:definition>999109 - Disclosure - Schedule of unobservable inputs in fair value measurement within level 2 (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfExpectedContractualMaturitiesDetails" id="ScheduleOfExpectedContractualMaturitiesDetails">
          <link:definition>999110 - Disclosure - schedule of expected contractual maturities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfSignificantExchangeRatesDetails" id="ScheduleOfSignificantExchangeRatesDetails">
          <link:definition>999111 - Disclosure - Schedule of significant exchange rates (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/FinancialInstrumentsAndRiskManagementDetailsNarrative" id="FinancialInstrumentsAndRiskManagementDetailsNarrative">
          <link:definition>999112 - Disclosure - Financial instruments and risk management (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfLossPerShareDetails" id="ScheduleOfLossPerShareDetails">
          <link:definition>999113 - Disclosure - Schedule of loss per share (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/ScheduleOfDilutedWeightedAverageNumberOfOrdinarySharesDetails" id="ScheduleOfDilutedWeightedAverageNumberOfOrdinarySharesDetails">
          <link:definition>999114 - Disclosure - Schedule of diluted weighted average number of ordinary shares (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/LossPerShareDetailsNarrative" id="LossPerShareDetailsNarrative">
          <link:definition>999115 - Disclosure - Loss per share (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://fusion-fuel.eu/role/SubsequentEventsDetailsNarrative" id="SubsequentEventsDetailsNarrative">
          <link:definition>999116 - Disclosure - Subsequent events (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
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        <link:linkbaseRef xlink:type="simple" xlink:href="htoo-20260630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links" />
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    <element id="HTOO_ShareCapitalElementAdvisoryAgreements" name="ShareCapitalElementAdvisoryAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_SharePremiumElementAdvisoryAgreements" name="SharePremiumElementAdvisoryAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_NumberOfOrdinarySharesPrivateInvestmentInPublicEquity" name="NumberOfOrdinarySharesPrivateInvestmentInPublicEquity" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ShareCapitalPrivateInvestmentInPublicEquity" name="ShareCapitalPrivateInvestmentInPublicEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_SharePremiumPrivateInvestmentInPublicEquity" name="SharePremiumPrivateInvestmentInPublicEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_NumberOfOrdinarySharesExerciseOfPrefundedWarrants" name="NumberOfOrdinarySharesExerciseOfPrefundedWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ShareCapitalExerciseOfPrefundedWarrants" name="ShareCapitalExerciseOfPrefundedWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_SharePremiumExerciseOfPrefundedWarrants" name="SharePremiumExerciseOfPrefundedWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_NumberOfOrdinarySharesExerciseOfServiceWarrants" name="NumberOfOrdinarySharesExerciseOfServiceWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ShareCapitalExerciseOfServiceWarrants" name="ShareCapitalExerciseOfServiceWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_SharePremiumExerciseOfServiceWarrants" name="SharePremiumExerciseOfServiceWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ConversionPricePerShare" name="ConversionPricePerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_NewLeases" name="NewLeases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_LeasePayments" name="LeasePayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ExchangeDifferencesLeasesLiabilities" name="ExchangeDifferencesLeasesLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_CashAndReceivablesCarryingAmount" name="CashAndReceivablesCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_LiabilitiesAmortisedCost" name="LiabilitiesAmortisedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_LiabilitiesCarryingAmount" name="LiabilitiesCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_EquityCarryingAmount" name="EquityCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_TotalCarryingAmount" name="TotalCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_FinancialLiabilitiesCarryingAmount" name="FinancialLiabilitiesCarryingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_FinancialLiabilitiesContractualCashFlows" name="FinancialLiabilitiesContractualCashFlows" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_DescriptionOfReverseShareSplit" name="DescriptionOfReverseShareSplit" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ConvertiblePromissoryNotesDescription" name="ConvertiblePromissoryNotesDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_MaximumAggregateOfferingPrice" name="MaximumAggregateOfferingPrice" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_DebtInstrumentOfOutstandingBalanceAmount" name="DebtInstrumentOfOutstandingBalanceAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_DebtInstrumentOfOutstandingBalancePrecentage" name="DebtInstrumentOfOutstandingBalancePrecentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ServicesExpenseReducing" name="ServicesExpenseReducing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_PercentageOfDiscountToMarket" name="PercentageOfDiscountToMarket" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_ExecutionMinimumPaymentAmount" name="ExecutionMinimumPaymentAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="HTOO_AggregateGrossProceeds" name="AggregateGrossProceeds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
