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    <link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_BF3DBE746642B60E7BCDF52FB8326640_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_BF3DBE746642B60E7BCDF52FB8326640" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Taxes and Tax Credits</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_9293B8E4D9C561A52A6EF52FB832AAAA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_659C3C38E24B44BF7DCEF52FB832E9CD_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedTaxesPayable_659C3C38E24B44BF7DCEF52FB832E9CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taxes accrued</link:label>
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    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_187F81F2C255E2D9DF19F52FB8349E1F_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_187F81F2C255E2D9DF19F52FB8349E1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental disclosure of cash paid for:</link:label>
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_187F81F2C255E2D9DF19F52FB8349E1F_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_187F81F2C255E2D9DF19F52FB8349E1F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Cash Flow Information [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_187F81F2C255E2D9DF19F52FB8349E1F" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_187F81F2C255E2D9DF19F52FB8349E1F" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestPaid_D39F6A48E2BE472104F4F52FB8341F66_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InterestPaid_D39F6A48E2BE472104F4F52FB8341F66" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Interest</link:label>
    <link:label id="lab_us-gaap_InterestPaid_D39F6A48E2BE472104F4F52FB8341F66_label_en-US" xlink:label="lab_us-gaap_InterestPaid_D39F6A48E2BE472104F4F52FB8341F66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_InterestPaid" xlink:label="loc_us-gaap_InterestPaid_D39F6A48E2BE472104F4F52FB8341F66" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Paid, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B" xlink:to="lab_us-gaap_IncomeTaxesPaidNet_0485134FF438F2534BF7F52FB8346C5B" xlink:type="arc" />
    <link:label id="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_9C8193BB52A6A084B8EB47181273D575_terseLabel_en-US" xlink:label="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_56FAF98B0E1F59919167871926F3A2BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized purchased gas adjustments</link:label>
    <link:label id="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_9C8193BB52A6A084B8EB47181273D575_label_en-US" xlink:label="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_56FAF98B0E1F59919167871926F3A2BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unamortized Purchased Gas Adjustments Asset [Member]</link:label>
    <link:label id="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_9C8193BB52A6A084B8EB47181273D575_documentation_en-US" xlink:label="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_56FAF98B0E1F59919167871926F3A2BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discloses the amount of regulatory asset that is related to the unamortized purchased gas adjustments, according to the regulator.</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_UnamortizedPurchasedGasAdjustmentsAssetMember" xlink:label="loc_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_56FAF98B0E1F59919167871926F3A2BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_56FAF98B0E1F59919167871926F3A2BF" xlink:to="lab_lg_UnamortizedPurchasedGasAdjustmentsAssetMember_56FAF98B0E1F59919167871926F3A2BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_RemovalCostsMember_B7DEE7F31F1430BF0829471812743F50_terseLabel_en-US" xlink:label="lab_us-gaap_RemovalCostsMember_8B96006C1392525FA092A072F64D71DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of removal</link:label>
    <link:label id="lab_us-gaap_RemovalCostsMember_B7DEE7F31F1430BF0829471812743F50_label_en-US" xlink:label="lab_us-gaap_RemovalCostsMember_8B96006C1392525FA092A072F64D71DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Removal Costs [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RemovalCostsMember" xlink:label="loc_us-gaap_RemovalCostsMember_8B96006C1392525FA092A072F64D71DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RemovalCostsMember_8B96006C1392525FA092A072F64D71DF" xlink:to="lab_us-gaap_RemovalCostsMember_8B96006C1392525FA092A072F64D71DF" xlink:type="arc" />
    <link:label id="lab_lg_PurchasedGasCostsMember_8D99BD3B520A3965F8824718127419A1_terseLabel_en-US" xlink:label="lab_lg_PurchasedGasCostsMember_E939C9FFFCD551A0A0C4B2D7E912C1E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchased gas costs</link:label>
    <link:label id="lab_lg_PurchasedGasCostsMember_8D99BD3B520A3965F8824718127419A1_label_en-US" xlink:label="lab_lg_PurchasedGasCostsMember_E939C9FFFCD551A0A0C4B2D7E912C1E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchased Gas Costs [Member]</link:label>
    <link:label id="lab_lg_PurchasedGasCostsMember_8D99BD3B520A3965F8824718127419A1_documentation_en-US" xlink:label="lab_lg_PurchasedGasCostsMember_E939C9FFFCD551A0A0C4B2D7E912C1E3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discloses the amount of regulatory asset arising from the balance of purchased gas costs, according to the regulator.</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_PurchasedGasCostsMember" xlink:label="loc_lg_PurchasedGasCostsMember_E939C9FFFCD551A0A0C4B2D7E912C1E3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_PurchasedGasCostsMember_E939C9FFFCD551A0A0C4B2D7E912C1E3" xlink:to="lab_lg_PurchasedGasCostsMember_E939C9FFFCD551A0A0C4B2D7E912C1E3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RenewableEnergyProgramMember_FE2B76F10AF2E481E777471812742224_terseLabel_en-US" xlink:label="lab_us-gaap_RenewableEnergyProgramMember_9C77A135209A5A7AA22B8B0A4E2A6AA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Energy efficiency</link:label>
    <link:label id="lab_us-gaap_RenewableEnergyProgramMember_FE2B76F10AF2E481E777471812742224_label_en-US" xlink:label="lab_us-gaap_RenewableEnergyProgramMember_9C77A135209A5A7AA22B8B0A4E2A6AA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Renewable Energy Program [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RenewableEnergyProgramMember" xlink:label="loc_us-gaap_RenewableEnergyProgramMember_9C77A135209A5A7AA22B8B0A4E2A6AA4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RenewableEnergyProgramMember_9C77A135209A5A7AA22B8B0A4E2A6AA4" xlink:to="lab_us-gaap_RenewableEnergyProgramMember_9C77A135209A5A7AA22B8B0A4E2A6AA4" xlink:type="arc" />
    <link:label id="lab_lg_RegulatoryAssetsCurrentMember_44956FE82EA4814110B547181274871C_terseLabel_en-US" xlink:label="lab_lg_RegulatoryAssetsCurrentMember_322460004C825A0EA94E18A653A1CFCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Regulatory Assets (current)</link:label>
    <link:label id="lab_lg_RegulatoryAssetsCurrentMember_44956FE82EA4814110B547181274871C_label_en-US" xlink:label="lab_lg_RegulatoryAssetsCurrentMember_322460004C825A0EA94E18A653A1CFCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Current [Member]</link:label>
    <link:label id="lab_lg_RegulatoryAssetsCurrentMember_44956FE82EA4814110B547181274871C_documentation_en-US" xlink:label="lab_lg_RegulatoryAssetsCurrentMember_322460004C825A0EA94E18A653A1CFCB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Current [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_RegulatoryAssetsCurrentMember" xlink:label="loc_lg_RegulatoryAssetsCurrentMember_322460004C825A0EA94E18A653A1CFCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_RegulatoryAssetsCurrentMember_322460004C825A0EA94E18A653A1CFCB" xlink:to="lab_lg_RegulatoryAssetsCurrentMember_322460004C825A0EA94E18A653A1CFCB" xlink:type="arc" />
    <link:label id="lab_lg_RegulatoryAssetsNoncurrentMember_C6BB0F4D18F33E21DA4B471812747B70_terseLabel_en-US" xlink:label="lab_lg_RegulatoryAssetsNoncurrentMember_7C3A0B8CF0AA5C7097BBF7EEAA09B74A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Regulatory Assets (non-current)</link:label>
    <link:label id="lab_lg_RegulatoryAssetsNoncurrentMember_C6BB0F4D18F33E21DA4B471812747B70_label_en-US" xlink:label="lab_lg_RegulatoryAssetsNoncurrentMember_7C3A0B8CF0AA5C7097BBF7EEAA09B74A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Noncurrent [Member]</link:label>
    <link:label id="lab_lg_RegulatoryAssetsNoncurrentMember_C6BB0F4D18F33E21DA4B471812747B70_documentation_en-US" xlink:label="lab_lg_RegulatoryAssetsNoncurrentMember_7C3A0B8CF0AA5C7097BBF7EEAA09B74A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Noncurrent [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_RegulatoryAssetsNoncurrentMember" xlink:label="loc_lg_RegulatoryAssetsNoncurrentMember_7C3A0B8CF0AA5C7097BBF7EEAA09B74A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_RegulatoryAssetsNoncurrentMember_7C3A0B8CF0AA5C7097BBF7EEAA09B74A" xlink:to="lab_lg_RegulatoryAssetsNoncurrentMember_7C3A0B8CF0AA5C7097BBF7EEAA09B74A" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryAssetsCurrent_7DC918B959CAEEE68710471812757AB7_verboseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsCurrent_0C5A5AC1A2615E76BC55D3F5515C5283" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Assets: Current</link:label>
    <link:label id="lab_us-gaap_RegulatoryAssetsCurrent_7DC918B959CAEEE68710471812757AB7_label_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsCurrent_0C5A5AC1A2615E76BC55D3F5515C5283" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_0C5A5AC1A2615E76BC55D3F5515C5283" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryAssetsCurrent_0C5A5AC1A2615E76BC55D3F5515C5283" xlink:to="lab_us-gaap_RegulatoryAssetsCurrent_0C5A5AC1A2615E76BC55D3F5515C5283" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryAssetsNoncurrent_440DC8D70391A6A9352C47181275AB65_verboseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsNoncurrent_808D3F4FD8355CD987A0D7DE61A59EC3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Assets: Non-current</link:label>
    <link:label id="lab_us-gaap_RegulatoryAssetsNoncurrent_440DC8D70391A6A9352C47181275AB65_label_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsNoncurrent_808D3F4FD8355CD987A0D7DE61A59EC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryAssetsNoncurrent" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_808D3F4FD8355CD987A0D7DE61A59EC3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryAssetsNoncurrent_808D3F4FD8355CD987A0D7DE61A59EC3" xlink:to="lab_us-gaap_RegulatoryAssetsNoncurrent_808D3F4FD8355CD987A0D7DE61A59EC3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryAssets_1131F758F016E450BA84471812754E40_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssets_753BA1C69A52508AB35DC2967D93566A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Regulatory Assets</link:label>
    <link:label id="lab_us-gaap_RegulatoryAssets_1131F758F016E450BA84471812754E40_label_en-US" xlink:label="lab_us-gaap_RegulatoryAssets_753BA1C69A52508AB35DC2967D93566A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryAssets" xlink:label="loc_us-gaap_RegulatoryAssets_753BA1C69A52508AB35DC2967D93566A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryAssets_753BA1C69A52508AB35DC2967D93566A" xlink:to="lab_us-gaap_RegulatoryAssets_753BA1C69A52508AB35DC2967D93566A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_ED40EA87CBB2211325CB471812757758_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_DC587B3FC96455288F0443D35109FA49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Regulatory Liabilities [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_ED40EA87CBB2211325CB471812757758_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_DC587B3FC96455288F0443D35109FA49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Regulatory Liabilities [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfRegulatoryLiabilitiesTable" xlink:label="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_DC587B3FC96455288F0443D35109FA49" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RegulatoryLiabilityAxis_1EB70247DD6676B3273A47181275BDCB_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityAxis_50F61995C2EF521CB7F32BFB38FFCC42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Liability [Axis]</link:label>
    <link:label id="lab_us-gaap_RegulatoryLiabilityAxis_1EB70247DD6676B3273A47181275BDCB_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityAxis_50F61995C2EF521CB7F32BFB38FFCC42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_50F61995C2EF521CB7F32BFB38FFCC42" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RegulatoryLiabilityDomain_C41D68F140F2CDB6A0A94718127576AB_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityDomain_C70B76DD53265298806849CEE7F3BBB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Liability [Domain]</link:label>
    <link:label id="lab_us-gaap_RegulatoryLiabilityDomain_C41D68F140F2CDB6A0A94718127576AB_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityDomain_C70B76DD53265298806849CEE7F3BBB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_C70B76DD53265298806849CEE7F3BBB0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_C70B76DD53265298806849CEE7F3BBB0" xlink:to="lab_us-gaap_RegulatoryLiabilityDomain_C70B76DD53265298806849CEE7F3BBB0" xlink:type="arc" />
    <link:label id="lab_lg_RSEAdjustmentMember_023C9BD8753A959D4B5B471812751089_terseLabel_en-US" xlink:label="lab_lg_RSEAdjustmentMember_1A636D8045E85525948CCD262932276F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate Stabilization and Equalization (RSE) adjustment</link:label>
    <link:label id="lab_lg_RSEAdjustmentMember_023C9BD8753A959D4B5B471812751089_label_en-US" xlink:label="lab_lg_RSEAdjustmentMember_1A636D8045E85525948CCD262932276F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">RSE Adjustment [Member]</link:label>
    <link:label id="lab_lg_RSEAdjustmentMember_023C9BD8753A959D4B5B471812751089_documentation_en-US" xlink:label="lab_lg_RSEAdjustmentMember_1A636D8045E85525948CCD262932276F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">RSE Adjustment [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_RSEAdjustmentMember" xlink:label="loc_lg_RSEAdjustmentMember_1A636D8045E85525948CCD262932276F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_RSEAdjustmentMember_1A636D8045E85525948CCD262932276F" xlink:to="lab_lg_RSEAdjustmentMember_1A636D8045E85525948CCD262932276F" xlink:type="arc" />
    <link:label id="lab_lg_UnbilledServiceMarginMember_15C4E56D90DEB90F66B1471812751D91_terseLabel_en-US" xlink:label="lab_lg_UnbilledServiceMarginMember_A290A0B811475F57A9D8971CE182D7F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unbilled service margin</link:label>
    <link:label id="lab_lg_UnbilledServiceMarginMember_15C4E56D90DEB90F66B1471812751D91_label_en-US" xlink:label="lab_lg_UnbilledServiceMarginMember_A290A0B811475F57A9D8971CE182D7F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unbilled Service Margin [Member]</link:label>
    <link:label id="lab_lg_UnbilledServiceMarginMember_15C4E56D90DEB90F66B1471812751D91_documentation_en-US" xlink:label="lab_lg_UnbilledServiceMarginMember_A290A0B811475F57A9D8971CE182D7F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unbilled Service Margin [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_UnbilledServiceMarginMember" xlink:label="loc_lg_UnbilledServiceMarginMember_A290A0B811475F57A9D8971CE182D7F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_UnbilledServiceMarginMember_A290A0B811475F57A9D8971CE182D7F9" xlink:to="lab_lg_UnbilledServiceMarginMember_A290A0B811475F57A9D8971CE182D7F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueSubjectToRefundMember_293F7347410FE42253F04718127514EA_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueSubjectToRefundMember_F192590DA19952EC96F6A528F00AC7D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Refundable negative salvage</link:label>
    <link:label id="lab_us-gaap_RevenueSubjectToRefundMember_293F7347410FE42253F04718127514EA_label_en-US" xlink:label="lab_us-gaap_RevenueSubjectToRefundMember_F192590DA19952EC96F6A528F00AC7D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Subject to Refund [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RevenueSubjectToRefundMember" xlink:label="loc_us-gaap_RevenueSubjectToRefundMember_F192590DA19952EC96F6A528F00AC7D7" xlink:type="locator" />
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    <link:label id="lab_lg_GasSupplyAdjustmentMember_30E83033914BB46E1A2F471812765B20_terseLabel_en-US" xlink:label="lab_lg_GasSupplyAdjustmentMember_8B47C011585E593D972F9ADCFC03EBD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized purchased gas adjustments</link:label>
    <link:label id="lab_lg_GasSupplyAdjustmentMember_30E83033914BB46E1A2F471812765B20_label_en-US" xlink:label="lab_lg_GasSupplyAdjustmentMember_8B47C011585E593D972F9ADCFC03EBD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gas Supply Adjustment [Member]</link:label>
    <link:label id="lab_lg_GasSupplyAdjustmentMember_30E83033914BB46E1A2F471812765B20_documentation_en-US" xlink:label="lab_lg_GasSupplyAdjustmentMember_8B47C011585E593D972F9ADCFC03EBD2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gas Supply Adjustment [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_GasSupplyAdjustmentMember" xlink:label="loc_lg_GasSupplyAdjustmentMember_8B47C011585E593D972F9ADCFC03EBD2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_GasSupplyAdjustmentMember_8B47C011585E593D972F9ADCFC03EBD2" xlink:to="lab_lg_GasSupplyAdjustmentMember_8B47C011585E593D972F9ADCFC03EBD2" xlink:type="arc" />
    <link:label id="lab_lg_OtherRegulatoryLiabilitiesMember_5C363BD0B62DBC9CA52847181276A82D_terseLabel_en-US" xlink:label="lab_lg_OtherRegulatoryLiabilitiesMember_88524100D3CA56FE913E769DC4BC171A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_lg_OtherRegulatoryLiabilitiesMember_5C363BD0B62DBC9CA52847181276A82D_label_en-US" xlink:label="lab_lg_OtherRegulatoryLiabilitiesMember_88524100D3CA56FE913E769DC4BC171A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Regulatory Liabilities [Member]</link:label>
    <link:label id="lab_lg_OtherRegulatoryLiabilitiesMember_5C363BD0B62DBC9CA52847181276A82D_documentation_en-US" xlink:label="lab_lg_OtherRegulatoryLiabilitiesMember_88524100D3CA56FE913E769DC4BC171A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discloses the amount of regulatory liabilities arising from other regulatory liabilities, according to the actions of the regulator.</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_OtherRegulatoryLiabilitiesMember" xlink:label="loc_lg_OtherRegulatoryLiabilitiesMember_88524100D3CA56FE913E769DC4BC171A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_OtherRegulatoryLiabilitiesMember_88524100D3CA56FE913E769DC4BC171A" xlink:to="lab_lg_OtherRegulatoryLiabilitiesMember_88524100D3CA56FE913E769DC4BC171A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PostretirementBenefitCostsMember_0FDB004932FAFE68DC59471812768CF9_terseLabel_en-US" xlink:label="lab_us-gaap_PostretirementBenefitCostsMember_AEBF11C88A6859958687DB5B127BF5D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Postretirement liabilities</link:label>
    <link:label id="lab_us-gaap_PostretirementBenefitCostsMember_0FDB004932FAFE68DC59471812768CF9_label_en-US" xlink:label="lab_us-gaap_PostretirementBenefitCostsMember_AEBF11C88A6859958687DB5B127BF5D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Postretirement Benefit Costs [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PostretirementBenefitCostsMember" xlink:label="loc_us-gaap_PostretirementBenefitCostsMember_AEBF11C88A6859958687DB5B127BF5D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PostretirementBenefitCostsMember_AEBF11C88A6859958687DB5B127BF5D7" xlink:to="lab_us-gaap_PostretirementBenefitCostsMember_AEBF11C88A6859958687DB5B127BF5D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_RemovalCostsMember_04DD4D5E0C7CAE353917471812762C67_verboseLabel_en-US" xlink:label="lab_us-gaap_RemovalCostsMember_BA1ABA34A1235B4483085C8CC977DD4C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accrued cost of removal</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RemovalCostsMember" xlink:label="loc_us-gaap_RemovalCostsMember_BA1ABA34A1235B4483085C8CC977DD4C" xlink:type="locator" />
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    <link:label id="lab_lg_RegulatoryLiabilityCurrentMember_E10EC1E4D0496424C45D47181276B686_terseLabel_en-US" xlink:label="lab_lg_RegulatoryLiabilityCurrentMember_9243D2C9EE015E82828FC3D8AFB64915" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Regulatory Liabilities (current)</link:label>
    <link:label id="lab_lg_RegulatoryLiabilityCurrentMember_E10EC1E4D0496424C45D47181276B686_label_en-US" xlink:label="lab_lg_RegulatoryLiabilityCurrentMember_9243D2C9EE015E82828FC3D8AFB64915" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability, Current [Member]</link:label>
    <link:label id="lab_lg_RegulatoryLiabilityCurrentMember_E10EC1E4D0496424C45D47181276B686_documentation_en-US" xlink:label="lab_lg_RegulatoryLiabilityCurrentMember_9243D2C9EE015E82828FC3D8AFB64915" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Regulatory Liability, Current [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_RegulatoryLiabilityCurrentMember" xlink:label="loc_lg_RegulatoryLiabilityCurrentMember_9243D2C9EE015E82828FC3D8AFB64915" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_RegulatoryLiabilityCurrentMember_9243D2C9EE015E82828FC3D8AFB64915" xlink:to="lab_lg_RegulatoryLiabilityCurrentMember_9243D2C9EE015E82828FC3D8AFB64915" xlink:type="arc" />
    <link:label id="lab_lg_RegulatoryLiabilityNoncurrentMember_2464B45DA83B25E4E00B47181276425B_terseLabel_en-US" xlink:label="lab_lg_RegulatoryLiabilityNoncurrentMember_8F10339480735DE5B6752B0BB1554790" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Regulatory Liabilities (non-current)</link:label>
    <link:label id="lab_lg_RegulatoryLiabilityNoncurrentMember_2464B45DA83B25E4E00B47181276425B_label_en-US" xlink:label="lab_lg_RegulatoryLiabilityNoncurrentMember_8F10339480735DE5B6752B0BB1554790" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability, Noncurrent [Member]</link:label>
    <link:label id="lab_lg_RegulatoryLiabilityNoncurrentMember_2464B45DA83B25E4E00B47181276425B_documentation_en-US" xlink:label="lab_lg_RegulatoryLiabilityNoncurrentMember_8F10339480735DE5B6752B0BB1554790" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Regulatory Liability, Noncurrent [Member]</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_RegulatoryLiabilityNoncurrentMember" xlink:label="loc_lg_RegulatoryLiabilityNoncurrentMember_8F10339480735DE5B6752B0BB1554790" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lg_RegulatoryLiabilityNoncurrentMember_8F10339480735DE5B6752B0BB1554790" xlink:to="lab_lg_RegulatoryLiabilityNoncurrentMember_8F10339480735DE5B6752B0BB1554790" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryLiabilitiesLineItems_21358CF9C305AD2E173047181276D5D2_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilitiesLineItems_08DFC46C375F5806AA26AC36F2A1C047" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Liabilities [Line Items]</link:label>
    <link:label id="lab_us-gaap_RegulatoryLiabilitiesLineItems_21358CF9C305AD2E173047181276D5D2_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilitiesLineItems_08DFC46C375F5806AA26AC36F2A1C047" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liabilities [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryLiabilitiesLineItems" xlink:label="loc_us-gaap_RegulatoryLiabilitiesLineItems_08DFC46C375F5806AA26AC36F2A1C047" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_08DFC46C375F5806AA26AC36F2A1C047" xlink:to="lab_us-gaap_RegulatoryLiabilitiesLineItems_08DFC46C375F5806AA26AC36F2A1C047" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryLiabilityCurrent_000286D4FC6464E73FF347181276949D_verboseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityCurrent_33071B97042A5041ACD1439685D664F7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Liabilities: Current</link:label>
    <link:label id="lab_us-gaap_RegulatoryLiabilityCurrent_000286D4FC6464E73FF347181276949D_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityCurrent_33071B97042A5041ACD1439685D664F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryLiabilityCurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_33071B97042A5041ACD1439685D664F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryLiabilityCurrent_33071B97042A5041ACD1439685D664F7" xlink:to="lab_us-gaap_RegulatoryLiabilityCurrent_33071B97042A5041ACD1439685D664F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryLiabilityNoncurrent_0DEDAE1A036CF720E94B47181276A59B_verboseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityNoncurrent_0817B61BD8DF5F2A846B2ABBDEEC7979" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Regulatory Liabilities: Non-current</link:label>
    <link:label id="lab_us-gaap_RegulatoryLiabilityNoncurrent_0DEDAE1A036CF720E94B47181276A59B_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilityNoncurrent_0817B61BD8DF5F2A846B2ABBDEEC7979" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liability, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryLiabilityNoncurrent" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_0817B61BD8DF5F2A846B2ABBDEEC7979" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryLiabilityNoncurrent_0817B61BD8DF5F2A846B2ABBDEEC7979" xlink:to="lab_us-gaap_RegulatoryLiabilityNoncurrent_0817B61BD8DF5F2A846B2ABBDEEC7979" xlink:type="arc" />
    <link:label id="lab_us-gaap_RegulatoryLiabilities_D1D38D95DDD0CF6AC6B647181276A6BC_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilities_3959DDF436FC5BDA922FAA0040A0BB31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Regulatory Liabilities</link:label>
    <link:label id="lab_us-gaap_RegulatoryLiabilities_D1D38D95DDD0CF6AC6B647181276A6BC_label_en-US" xlink:label="lab_us-gaap_RegulatoryLiabilities_3959DDF436FC5BDA922FAA0040A0BB31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Regulatory Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryLiabilities" xlink:label="loc_us-gaap_RegulatoryLiabilities_3959DDF436FC5BDA922FAA0040A0BB31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RegulatoryLiabilities_3959DDF436FC5BDA922FAA0040A0BB31" xlink:to="lab_us-gaap_RegulatoryLiabilities_3959DDF436FC5BDA922FAA0040A0BB31" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_38E41643BD895C0C7F91F2FE02630706_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_9FD3B733722B571CBBE1262FA4880547" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">FAIR VALUE OF FINANCIAL INSTRUMENTS</link:label>
    <link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_38E41643BD895C0C7F91F2FE02630706_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_9FD3B733722B571CBBE1262FA4880547" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Disclosures [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_9FD3B733722B571CBBE1262FA4880547" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherPensionPlansDefinedBenefitMember_59CF396A3ACAF5FF35A75EB301BE266A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherPensionPlansDefinedBenefitMember_59CF396A3ACAF5FF35A75EB301BE266A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonqualified Pension Plans</link:label>
    <link:label id="lab_us-gaap_OtherPensionPlansDefinedBenefitMember_59CF396A3ACAF5FF35A75EB301BE266A_label_en-US" xlink:label="lab_us-gaap_OtherPensionPlansDefinedBenefitMember_59CF396A3ACAF5FF35A75EB301BE266A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Pension Plan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OtherPensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_59CF396A3ACAF5FF35A75EB301BE266A" xlink:type="locator" />
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    <link:label id="lab_lg_LacledeGasMember_10ED9E43BB67F948A7075EB301BEA34C_terseLabel_en-US" xlink:label="lab_lg_LacledeGasMember_10ED9E43BB67F948A7075EB301BEA34C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Laclede Gas</link:label>
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    <link:label id="lab_lg_LacledeGasMember_10ED9E43BB67F948A7075EB301BEA34C_documentation_en-US" xlink:label="lab_lg_LacledeGasMember_10ED9E43BB67F948A7075EB301BEA34C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Another company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.</link:label>
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    <link:label id="lab_lg_DefinedBenefitPlanLumpsumPaymentRecognizedasSettlementGainLossMinimumThreshold_29F8FFA3A8376EA919B85EB301BE0D70_terseLabel_en-US" xlink:label="lab_lg_DefinedBenefitPlanLumpsumPaymentRecognizedasSettlementGainLossMinimumThreshold_29F8FFA3A8376EA919B85EB301BE0D70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Extent of lump-sum payments recognized, percentage</link:label>
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    <link:label id="lab_us-gaap_DefinedBenefitPlanCostOfProvidingSpecialOrContractualTerminationBenefitRecognizedDuringPeriod_54920EC687EDE82FD8755EB301BF7E13_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanCostOfProvidingSpecialOrContractualTerminationBenefitRecognizedDuringPeriod_54920EC687EDE82FD8755EB301BF7E13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Special termination benefits</link:label>
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    <link:label id="lab_us-gaap_DefinedBenefitPlanContributionsByEmployer_935310DA05E0E41A1BB95EB301BF70D1_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanContributionsByEmployer_935310DA05E0E41A1BB95EB301BF70D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contributions made by employer</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfShortTermDebtTable_46A7EE9B6858DF04EB18F54F9F76A996_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShortTermDebtTable_46A7EE9B6858DF04EB18F54F9F76A996" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Short-term Debt [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfShortTermDebtTable_46A7EE9B6858DF04EB18F54F9F76A996_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShortTermDebtTable_46A7EE9B6858DF04EB18F54F9F76A996" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Short-term Debt [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_46A7EE9B6858DF04EB18F54F9F76A996" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_4E14531C0E5DDC5960C2F54F9F76A779_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_4E14531C0E5DDC5960C2F54F9F76A779" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_4E14531C0E5DDC5960C2F54F9F76A779_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_4E14531C0E5DDC5960C2F54F9F76A779" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_4E14531C0E5DDC5960C2F54F9F76A779" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_DE4CF4131250FB59D591F54F9F77B3B6_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_DE4CF4131250FB59D591F54F9F77B3B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
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    <link:label id="lab_us-gaap_CommercialPaperMember_FF159A61DCEEBB95B328F5507DAB1968_terseLabel_en-US" xlink:label="lab_us-gaap_CommercialPaperMember_FF159A61DCEEBB95B328F5507DAB1968" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commercial Paper Notes</link:label>
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    <link:label id="lab_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_98AC65D56AFB6603CC40DC00481A127B_terseLabel_en-US" xlink:label="lab_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_98AC65D56AFB6603CC40DC00481A127B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: Accumulated depreciation and amortization</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_6424EE9FF0C34CDCC416DC00481B25CD_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_6424EE9FF0C34CDCC416DC00481B25CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
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    <link:label id="lab_lg_OtherInvestmentsOtherProperty_D6A4B12CA803869F1FACDC00481B7B57_label_en-US" xlink:label="lab_lg_OtherInvestmentsOtherProperty_D6A4B12CA803869F1FACDC00481B7B57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Investments Other Property</link:label>
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    <link:label id="lab_lg_OtherPropertyAndInvestments_689BC791EFF4A65FCB15DC00481BA414_label_en-US" xlink:label="lab_lg_OtherPropertyAndInvestments_689BC791EFF4A65FCB15DC00481BA414" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Property and Investments</link:label>
    <link:label id="lab_lg_OtherPropertyAndInvestments_689BC791EFF4A65FCB15DC00481BA414_documentation_en-US" xlink:label="lab_lg_OtherPropertyAndInvestments_689BC791EFF4A65FCB15DC00481BA414" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sum of the carrying amount as of the balance sheet date of non-utility tangible assets, net of accumulated depreciation, and other long-term investments not otherwise specified in the taxonomy.</link:label>
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    <link:label id="lab_us-gaap_AssetsCurrentAbstract_54180F3FAB0D337893D1DC00481BE244_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_54180F3FAB0D337893D1DC00481BE244" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Assets:</link:label>
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_54180F3FAB0D337893D1DC00481BE244_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_54180F3FAB0D337893D1DC00481BE244" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current [Abstract]</link:label>
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    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_CDB15C65205B1557F489DC00481B3C94_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_CDB15C65205B1557F489DC00481B3C94" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_CDB15C65205B1557F489DC00481B3C94" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ReceivablesNetCurrentAbstract_C05CC7D14364ACC1CCBDDC00481B4D2E_label_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrentAbstract_C05CC7D14364ACC1CCBDDC00481B4D2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables, Net, Current [Abstract]</link:label>
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    <link:label id="lab_us-gaap_AccountsReceivableGrossCurrent_475253DC4866A8350E05DC00481B7B5A_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableGrossCurrent_475253DC4866A8350E05DC00481B7B5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Utility</link:label>
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    <link:label id="lab_us-gaap_EnergyRelatedInventoryGasStoredUnderground_FBFB10FE6722DA2E5E6BDC00481CF502_terseLabel_en-US" xlink:label="lab_us-gaap_EnergyRelatedInventoryGasStoredUnderground_FBFB10FE6722DA2E5E6BDC00481CF502" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Natural gas</link:label>
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    <link:label id="lab_us-gaap_EnergyRelatedInventoryPropaneGas_264434B520FBEDB708B7DC00481C615E_terseLabel_en-US" xlink:label="lab_us-gaap_EnergyRelatedInventoryPropaneGas_264434B520FBEDB708B7DC00481C615E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Propane gas</link:label>
    <link:label id="lab_us-gaap_EnergyRelatedInventoryPropaneGas_264434B520FBEDB708B7DC00481C615E_label_en-US" xlink:label="lab_us-gaap_EnergyRelatedInventoryPropaneGas_264434B520FBEDB708B7DC00481C615E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Energy Related Inventory, Propane Gas</link:label>
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    <link:label id="lab_us-gaap_OtherInventoryPurchasedGoods_7AB20F8080B4C5AD716ADC00481CC00A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherInventoryPurchasedGoods_7AB20F8080B4C5AD716ADC00481CC00A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Materials and supplies</link:label>
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    <link:label id="lab_lg_NaturalGasReceivable_ECA9939D75D4B3F0707DDC00481CEDF4_terseLabel_en-US" xlink:label="lab_lg_NaturalGasReceivable_ECA9939D75D4B3F0707DDC00481CEDF4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Natural gas receivable</link:label>
    <link:label id="lab_lg_NaturalGasReceivable_ECA9939D75D4B3F0707DDC00481CEDF4_label_en-US" xlink:label="lab_lg_NaturalGasReceivable_ECA9939D75D4B3F0707DDC00481CEDF4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Natural gas receivable</link:label>
    <link:label id="lab_lg_NaturalGasReceivable_ECA9939D75D4B3F0707DDC00481CEDF4_documentation_en-US" xlink:label="lab_lg_NaturalGasReceivable_ECA9939D75D4B3F0707DDC00481CEDF4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cost of natural gas purchased and delivered to a third party that will be returned to the entity at the same location in a specified future period.</link:label>
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    <link:label id="lab_us-gaap_DerivativeAssetsCurrent_8EB1B894F36CF04466DCDC00481C3F55_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssetsCurrent_8EB1B894F36CF04466DCDC00481C3F55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative instrument assets</link:label>
    <link:label id="lab_us-gaap_DerivativeAssetsCurrent_8EB1B894F36CF04466DCDC00481C3F55_label_en-US" xlink:label="lab_us-gaap_DerivativeAssetsCurrent_8EB1B894F36CF04466DCDC00481C3F55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Asset, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_8EB1B894F36CF04466DCDC00481C3F55" xlink:type="locator" />
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    <link:label id="lab_lg_UnamortizedPurchasedGasAdjustmentsAssets_EF117FA878760A0122B0DC00481CA2DB_label_en-US" xlink:label="lab_lg_UnamortizedPurchasedGasAdjustmentsAssets_EF117FA878760A0122B0DC00481CA2DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unamortized purchased gas adjustments, Assets</link:label>
    <link:label id="lab_lg_UnamortizedPurchasedGasAdjustmentsAssets_EF117FA878760A0122B0DC00481CA2DB_documentation_en-US" xlink:label="lab_lg_UnamortizedPurchasedGasAdjustmentsAssets_EF117FA878760A0122B0DC00481CA2DB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carrying amount as of the balance sheet date of unrecovered costs for purchased gas expected to be billed to utility customers within one year or the normal operating cycle, if longer.</link:label>
    <link:loc xlink:href="lg-20161231.xsd#lg_UnamortizedPurchasedGasAdjustmentsAssets" xlink:label="loc_lg_UnamortizedPurchasedGasAdjustmentsAssets_EF117FA878760A0122B0DC00481CA2DB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RegulatoryAssetsCurrent_BE44FB1BE5993FF2787ADC00481CA2EA_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsCurrent_BE44FB1BE5993FF2787ADC00481CA2EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other regulatory assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryAssetsCurrent" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_BE44FB1BE5993FF2787ADC00481CA2EA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent_7825C7F1F358ADCACE15DC00481C9E19_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent_7825C7F1F358ADCACE15DC00481C9E19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
    <link:label id="lab_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent_7825C7F1F358ADCACE15DC00481C9E19_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent_7825C7F1F358ADCACE15DC00481C9E19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent_7825C7F1F358ADCACE15DC00481C9E19" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_930C16D2F688D33649A7DC00481CD9EE_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_930C16D2F688D33649A7DC00481CD9EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Expense and Other Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_930C16D2F688D33649A7DC00481CD9EE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetsCurrent_1F44179CA7B74982832CDC00481CFA3C_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_1F44179CA7B74982832CDC00481CFA3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current</link:label>
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    <link:label id="lab_us-gaap_DeferredCostsAbstract_1A4AA23872B5E17CDA30DC00481C184F_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredCostsAbstract_1A4AA23872B5E17CDA30DC00481C184F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Charges:</link:label>
    <link:label id="lab_us-gaap_DeferredCostsAbstract_1A4AA23872B5E17CDA30DC00481C184F_label_en-US" xlink:label="lab_us-gaap_DeferredCostsAbstract_1A4AA23872B5E17CDA30DC00481C184F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Costs [Abstract]</link:label>
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    <link:label id="lab_us-gaap_RegulatoryAssetsNoncurrent_21AF1645B53DA61F8DB9DC00481CCDB3_terseLabel_en-US" xlink:label="lab_us-gaap_RegulatoryAssetsNoncurrent_21AF1645B53DA61F8DB9DC00481CCDB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Regulatory assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RegulatoryAssetsNoncurrent" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_21AF1645B53DA61F8DB9DC00481CCDB3" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_77F19E0859051504AF98DC00481C686E_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_77F19E0859051504AF98DC00481C686E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Net, Noncurrent</link:label>
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    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_2BF51F0C46C88259C95ADC00481D6E5E_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_2BF51F0C46C88259C95ADC00481D6E5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
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    <link:label id="lab_us-gaap_DeferredCosts_95D84D1AD29CB9B47AEEDC00481D5020_label_en-US" xlink:label="lab_us-gaap_DeferredCosts_95D84D1AD29CB9B47AEEDC00481D5020" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Costs, Noncurrent</link:label>
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