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    <link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_0EC17524675B11209ED372363DB333AA_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_0EC17524675B11209ED372363DB333AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued benefit obligations</link:label>
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    <link:label id="lab_oge_OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_FD1E75BD3A40753657C3B3948A16C974_documentation_en-US" xlink:label="lab_oge_OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_FD1E75BD3A40753657C3B3948A16C974" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period, Net of Tax</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax_658041F7AFCF0C3FE4C5B3948A179502_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax_658041F7AFCF0C3FE4C5B3948A179502" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Amortization of deferred net transition obligation, net of tax of $_, $0 and $0, respectively</link:label>
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    <link:label id="lab_oge_OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax_16400B11F4B38B7BCFA9B3948A17A2BF_terseLabel_en-US" xlink:label="lab_oge_OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax_16400B11F4B38B7BCFA9B3948A17A2BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively</link:label>
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    <link:label id="lab_oge_OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax_16400B11F4B38B7BCFA9B3948A17A2BF_documentation_en-US" xlink:label="lab_oge_OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax_16400B11F4B38B7BCFA9B3948A17A2BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income Prior Service Credit Arising During The Period Recognized In Net Periodic Postretirement Cost Net of Tax</link:label>
    <link:loc xlink:href="oge-20171231.xsd#oge_OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax" xlink:label="loc_oge_OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax_16400B11F4B38B7BCFA9B3948A17A2BF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_C9C3E9018F61D52920C0B3948A17744A_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax_C9C3E9018F61D52920C0B3948A17744A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Deferred commodity contracts hedging losses reclassified in net income, net of tax of $0, $0 and $0, respectively</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_94B09A3FF11152C0D2E9B3948A17EB3C_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_94B09A3FF11152C0D2E9B3948A17EB3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred commodity contracts hedging gains (losses), net of tax of $0, $0 and $0, respectively</link:label>
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