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    <link:loc xlink:type="locator" xlink:label="loc_ark_AcquisitionCessionDactionsPropres" xlink:href="ark-2024-12-31.xsd#ark_AcquisitionCessionDactionsPropres"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ark_RemunerationVerseeAuxPorteursDeTitresSubordonnesADureeIndeterminee" xlink:href="ark-2024-12-31.xsd#ark_RemunerationVerseeAuxPorteursDeTitresSubordonnesADureeIndeterminee"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ark_VariationDesFournisseursDImmobilisations" xlink:href="ark-2024-12-31.xsd#ark_VariationDesFournisseursDImmobilisations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ark_VariationDesFournisseursDImmobilisations" xlink:to="lab_ark_VariationDesFournisseursDImmobilisations" xlink:type="arc" order="1"/>
    <link:label id="lab_ark_AcquisitionOuCessionDactionsPropres_4378050a-93c2-4f7b-bc71-1ec88d669363_label_en" xlink:label="lab_ark_AcquisitionOuCessionDactionsPropres" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Acquisition Ou Cession D'actions Propres</link:label>
    <link:label id="lab_ark_AcquisitionOuCessionDactionsPropres_0746fe24-96ff-48f0-aaa6-d028fe5c07b4_documentation_en" xlink:label="lab_ark_AcquisitionOuCessionDactionsPropres" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Acquisition or Disposal of Own Shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ark_AcquisitionOuCessionDactionsPropres" xlink:href="ark-2024-12-31.xsd#ark_AcquisitionOuCessionDactionsPropres"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ark_AcquisitionOuCessionDactionsPropres" xlink:to="lab_ark_AcquisitionOuCessionDactionsPropres" xlink:type="arc" order="1"/>
    <link:label id="lab_ark_ObligationsHybridesMember_202b84fd-6d6d-4792-9f72-6d20bc935cb6_label_en" xlink:label="lab_ark_ObligationsHybridesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Hybrid bonds</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ark_ObligationsHybridesMember" xlink:href="ark-2024-12-31.xsd#ark_ObligationsHybridesMember"/>
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    <link:label id="lab_ark_CoutsEtChargesDExploitation_b4ee707d-77e3-4c87-8032-0cc0df95df45_label_en" xlink:label="lab_ark_CoutsEtChargesDExploitation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Operating costs and expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ark_CoutsEtChargesDExploitation" xlink:href="ark-2024-12-31.xsd#ark_CoutsEtChargesDExploitation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ark_CoutsEtChargesDExploitation" xlink:to="lab_ark_CoutsEtChargesDExploitation" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_4f824c8a-edae-4bc9-9a1d-17a648847d93_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ark_TransactionsAvecLesProprietairesAbstract_fb4b80c3-ca56-4b5b-9e42-28dc027bbb44_label_en" xlink:label="lab_ark_TransactionsAvecLesProprietairesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Transactions with owners</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ark_TransactionsAvecLesProprietairesAbstract" xlink:href="ark-2024-12-31.xsd#ark_TransactionsAvecLesProprietairesAbstract"/>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_781ad931-f748-4b9d-a8aa-1982eecaed2d_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
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    <link:label id="lab_ark_AutresProvisionsEtImpotsDifferes_fe293423-2cd3-4192-9a34-3f506ed92bdd_label_en" xlink:label="lab_ark_AutresProvisionsEtImpotsDifferes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Other provisions and deferred taxes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ark_AutresProvisionsEtImpotsDifferes" xlink:href="ark-2024-12-31.xsd#ark_AutresProvisionsEtImpotsDifferes"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ark_InformationsRelativesAuxEnjeuxClimatiquesTextBlock" xlink:href="ark-2024-12-31.xsd#ark_InformationsRelativesAuxEnjeuxClimatiquesTextBlock"/>
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    <link:label id="lab_ark_ProduitsDeCessionDActifsIncorporelsEtCorporelsHorsVariationsDesCreancesSurCessionDImmobilisations_10a4f194-ba29-44a7-84b0-fbd656b1416c_label_en" xlink:label="lab_ark_ProduitsDeCessionDActifsIncorporelsEtCorporelsHorsVariationsDesCreancesSurCessionDImmobilisations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Proceeds from disposal of intangible and tangible assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ark_ProduitsDeCessionDActifsIncorporelsEtCorporelsHorsVariationsDesCreancesSurCessionDImmobilisations" xlink:href="ark-2024-12-31.xsd#ark_ProduitsDeCessionDActifsIncorporelsEtCorporelsHorsVariationsDesCreancesSurCessionDImmobilisations"/>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_2fe07871-542a-4460-ab52-3f17205bfbea_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InflowsOfCashFromInvestingActivities_539d1891-0832-4c71-957e-c9e4b42406c0_totalLabel_en" xlink:label="lab_ifrs-full_InflowsOfCashFromInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Inflows of cash from investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InflowsOfCashFromInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InflowsOfCashFromInvestingActivities"/>
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    <link:label id="lab_ark_ImpotsDifferesSurEffetsDesCouverturesEtAutres_0175f9a8-1117-4c9d-9811-3f9c20e6ec7c_label_en" xlink:label="lab_ark_ImpotsDifferesSurEffetsDesCouverturesEtAutres" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Deferred taxes on hedging and other</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ark_VariationDesCreancesSurCessionDImmobilisations" xlink:href="ark-2024-12-31.xsd#ark_VariationDesCreancesSurCessionDImmobilisations"/>
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