<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#Cover" roleURI="http://gnln.com/role/Cover" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#BalanceSheets" roleURI="http://gnln.com/role/BalanceSheets" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#BalanceSheetsParenthetical" roleURI="http://gnln.com/role/BalanceSheetsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#StatementsOfOperationsAndComprehensiveLoss" roleURI="http://gnln.com/role/StatementsOfOperationsAndComprehensiveLoss" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#StatementsOfStockholdersEquity" roleURI="http://gnln.com/role/StatementsOfStockholdersEquity" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#StatementsOfCashFlows" roleURI="http://gnln.com/role/StatementsOfCashFlows" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#BusinessOperationsAndOrganization" roleURI="http://gnln.com/role/BusinessOperationsAndOrganization" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SummaryOfSignificantAccountingPolicies" roleURI="http://gnln.com/role/SummaryOfSignificantAccountingPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#FairValueOfFinancialInstruments" roleURI="http://gnln.com/role/FairValueOfFinancialInstruments" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#Leases" roleURI="http://gnln.com/role/Leases" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#CommitmentsAndContingencies" roleURI="http://gnln.com/role/CommitmentsAndContingencies" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SupplementalFinancialStatementInformation" roleURI="http://gnln.com/role/SupplementalFinancialStatementInformation" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#DigitalAssets" roleURI="http://gnln.com/role/DigitalAssets" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#StockholdersEquity" roleURI="http://gnln.com/role/StockholdersEquity" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#CompensationPlans" roleURI="http://gnln.com/role/CompensationPlans" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#IncomeTaxes" roleURI="http://gnln.com/role/IncomeTaxes" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SegmentReporting" roleURI="http://gnln.com/role/SegmentReporting" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SubsequentEvents" roleURI="http://gnln.com/role/SubsequentEvents" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://gnln.com/role/SummaryOfSignificantAccountingPoliciesPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#FairValueOfFinancialInstrumentsTables" roleURI="http://gnln.com/role/FairValueOfFinancialInstrumentsTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#LeasesTables" roleURI="http://gnln.com/role/LeasesTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SupplementalFinancialStatementInformationTables" roleURI="http://gnln.com/role/SupplementalFinancialStatementInformationTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#DigitalAssetsTables" roleURI="http://gnln.com/role/DigitalAssetsTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#StockholdersEquityTables" roleURI="http://gnln.com/role/StockholdersEquityTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#CompensationPlansTables" roleURI="http://gnln.com/role/CompensationPlansTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SegmentReportingTables" roleURI="http://gnln.com/role/SegmentReportingTables" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#BusinessOperationsAndOrganizationDetailsNarrative" roleURI="http://gnln.com/role/BusinessOperationsAndOrganizationDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SummaryOfSignificantAccountingPoliciesDetailsNarrative" roleURI="http://gnln.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfFairValueLiabilitiesMeasuredOnRecurringBasisDetails" roleURI="http://gnln.com/role/ScheduleOfFairValueLiabilitiesMeasuredOnRecurringBasisDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#FairValueOfFinancialInstrumentsDetailsNarrative" roleURI="http://gnln.com/role/FairValueOfFinancialInstrumentsDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfLeaseCostDetails" roleURI="http://gnln.com/role/ScheduleOfLeaseCostDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#LeasesDetailsNarrative" roleURI="http://gnln.com/role/LeasesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#CommitmentsAndContingenciesDetailsNarrative" roleURI="http://gnln.com/role/CommitmentsAndContingenciesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfAccountsReceivableDetails" roleURI="http://gnln.com/role/ScheduleOfAccountsReceivableDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SummarizesChangesInAllowanceForCreditLossesForAccountsReceivableDetails" roleURI="http://gnln.com/role/SummarizesChangesInAllowanceForCreditLossesForAccountsReceivableDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfPropertyPlantAndEquipmentLessDepreciationAndAmortizationDetails" roleURI="http://gnln.com/role/ScheduleOfPropertyPlantAndEquipmentLessDepreciationAndAmortizationDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfOtherCurrentAssetsDetails" roleURI="http://gnln.com/role/ScheduleOfOtherCurrentAssetsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesDetails" roleURI="http://gnln.com/role/ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SupplementalFinancialStatementInformationDetailsNarrative" roleURI="http://gnln.com/role/SupplementalFinancialStatementInformationDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfUnitsHeldCostBasisAndFairValueDetails" roleURI="http://gnln.com/role/ScheduleOfUnitsHeldCostBasisAndFairValueDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfCryptocurrencyActivitiesDetails" roleURI="http://gnln.com/role/ScheduleOfCryptocurrencyActivitiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfRestrictedAndUnrestrictedBera-equivalentHoldingsDetails" roleURI="http://gnln.com/role/ScheduleOfRestrictedAndUnrestrictedBera-equivalentHoldingsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfWarrantActivityDetails" roleURI="http://gnln.com/role/ScheduleOfWarrantActivityDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfEarningsPerShareBasicAndDilutedDetails" roleURI="http://gnln.com/role/ScheduleOfEarningsPerShareBasicAndDilutedDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfOutstandingPotentiallyDilutiveSecuritiesDetails" roleURI="http://gnln.com/role/ScheduleOfOutstandingPotentiallyDilutiveSecuritiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#StockholdersEquityDetailsNarrative" roleURI="http://gnln.com/role/StockholdersEquityDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfStockOptionActivityDetails" roleURI="http://gnln.com/role/ScheduleOfStockOptionActivityDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfStockOptionsOutstandingVestedDetails" roleURI="http://gnln.com/role/ScheduleOfStockOptionsOutstandingVestedDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfEquityBasedCompensationExpenseDetails" roleURI="http://gnln.com/role/ScheduleOfEquityBasedCompensationExpenseDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#CompensationPlansDetailsNarrative" roleURI="http://gnln.com/role/CompensationPlansDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#IncomeTaxesDetailsNarrative" roleURI="http://gnln.com/role/IncomeTaxesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfNetSalesByMajorProductCategoryDetails" roleURI="http://gnln.com/role/ScheduleOfNetSalesByMajorProductCategoryDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfDetailedInformationAboutReportableSegmentDetails" roleURI="http://gnln.com/role/ScheduleOfDetailedInformationAboutReportableSegmentDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfSegmentReportingInformationBySegmentDetails" roleURI="http://gnln.com/role/ScheduleOfSegmentReportingInformationBySegmentDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#ScheduleOfLong-livedAssetsByGeographicAreaDetails" roleURI="http://gnln.com/role/ScheduleOfLong-livedAssetsByGeographicAreaDetails" />
    <link:roleRef xlink:type="simple" xlink:href="gnln-20260630.xsd#SegmentReportingDetailsNarrative" roleURI="http://gnln.com/role/SegmentReportingDetailsNarrative" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/Cover" xlink:title="00000001 - Document - Cover" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/BalanceSheets" xlink:title="00000002 - Statement - Condensed Consolidated Balance Sheets">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaapAssetsCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaapCashAndCashEquivalentsAtCarryingValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapCashAndCashEquivalentsAtCarryingValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaapAccountsReceivableNetCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapAccountsReceivableNetCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_StablecoinrelatedProtocolInstruments" xlink:label="loc_GNLNStablecoinrelatedProtocolInstruments" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_GNLNStablecoinrelatedProtocolInstruments" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaapOtherAssetsCurrent" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapOtherAssetsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaapOperatingLeaseRightOfUseAsset" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOperatingLeaseRightOfUseAsset" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CryptoAssetFairValueNoncurrent" xlink:label="loc_us-gaapCryptoAssetFairValueNoncurrent" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapCryptoAssetFairValueNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaapOtherAssetsNoncurrent" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOtherAssetsNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaapLiabilitiesCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaapAccountsPayableCurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccountsPayableCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapOperatingLeaseLiabilityCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaapLiabilities" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaapPreferredStockValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapPreferredStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaapCommonStockValue" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapCommonStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaapAdditionalPaidInCapital" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAdditionalPaidInCapital" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaapRetainedEarningsAccumulatedDeficit" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapRetainedEarningsAccumulatedDeficit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaapAccumulatedOtherComprehensiveIncomeLossNetOfTax" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="loc_us-gaapStockholdersEquity" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaapMinorityInterest" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="loc_us-gaapMinorityInterest" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaapLiabilitiesAndStockholdersEquity" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilities" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaapCommitmentsAndContingencies" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapCommitmentsAndContingencies" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/BalanceSheetsParenthetical" xlink:title="00000003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/StatementsOfOperationsAndComprehensiveLoss" xlink:title="00000004 - Statement - Condensed Consolidated Statements Of Operations And Comprehensive Loss (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaapGrossProfit" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaapRevenueFromContractWithCustomerExcludingAssessedTax" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapGrossProfit" xlink:to="loc_us-gaapRevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaapCostOfGoodsAndServicesSold" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapGrossProfit" xlink:to="loc_us-gaapCostOfGoodsAndServicesSold" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaapOperatingExpenses" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_us-gaapLaborAndRelatedExpense" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapLaborAndRelatedExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_StockBasedCompensationStrategicAdvisoryWarrants" xlink:label="loc_GNLNStockBasedCompensationStrategicAdvisoryWarrants" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_GNLNStockBasedCompensationStrategicAdvisoryWarrants" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaapGeneralAndAdministrativeExpense" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapGeneralAndAdministrativeExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaapDepreciationAndAmortization" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapDepreciationAndAmortization" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaapOperatingIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapGrossProfit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_StakingAndYieldRevenueNet" xlink:label="loc_GNLNStakingAndYieldRevenueNet" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_GNLNStakingAndYieldRevenueNet" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapOperatingExpenses" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaapNonoperatingIncomeExpense" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating" xlink:label="loc_us-gaapInterestExpenseNonoperating" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNonoperatingIncomeExpense" xlink:to="loc_us-gaapInterestExpenseNonoperating" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_ChangeInFairValueOfDigitalAssets" xlink:label="loc_GNLNChangeInFairValueOfDigitalAssets" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNonoperatingIncomeExpense" xlink:to="loc_GNLNChangeInFairValueOfDigitalAssets" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_ImpairmentOfInvestment" xlink:label="loc_GNLNImpairmentOfInvestment" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNonoperatingIncomeExpense" xlink:to="loc_GNLNImpairmentOfInvestment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaapOtherNonoperatingIncomeExpense" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNonoperatingIncomeExpense" xlink:to="loc_us-gaapOtherNonoperatingIncomeExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapOperatingIncomeLoss" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapNonoperatingIncomeExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapProfitLoss" xlink:to="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaapIncomeTaxExpenseBenefit" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapProfitLoss" xlink:to="loc_us-gaapIncomeTaxExpenseBenefit" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapProfitLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeOtherNetOfTax" xlink:label="loc_us-gaapOtherComprehensiveIncomeOtherNetOfTax" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaapOtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOtherComprehensiveIncomeOtherNetOfTax" xlink:to="loc_us-gaapOtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaapComprehensiveIncomeNetOfTax" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapComprehensiveIncomeNetOfTax" xlink:to="loc_us-gaapNetIncomeLoss" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapComprehensiveIncomeNetOfTax" xlink:to="loc_us-gaapOtherComprehensiveIncomeOtherNetOfTax" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/StatementsOfStockholdersEquity" xlink:title="00000005 - Statement - Condensed Consolidated Statements of Stockholders&apos; Equity (Unaudited)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/StatementsOfCashFlows" xlink:title="00000006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapProfitLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaapDepreciationDepletionAndAmortization" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapDepreciationDepletionAndAmortization" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_StockBasedCompensationStrategicAdvisoryWarrants" xlink:label="loc_GNLNStockBasedCompensationStrategicAdvisoryWarrants" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNStockBasedCompensationStrategicAdvisoryWarrants" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaapAllocatedShareBasedCompensationExpense" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapAllocatedShareBasedCompensationExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:label="loc_us-gaapForeignCurrencyTransactionGainLossRealized" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapForeignCurrencyTransactionGainLossRealized" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_NoncashStakingRevenue" xlink:label="loc_GNLNNoncashStakingRevenue" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNNoncashStakingRevenue" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_WriteoffVendorDepositsAndAccruedLiabilities" xlink:label="loc_GNLNWriteoffVendorDepositsAndAccruedLiabilities" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNWriteoffVendorDepositsAndAccruedLiabilities" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_ChangeInFairValueOfDigitalAssets" xlink:label="loc_GNLNChangeInFairValueOfDigitalAssets" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNChangeInFairValueOfDigitalAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_ImpairmentOfInvestment" xlink:label="loc_GNLNImpairmentOfInvestment" />
      <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNImpairmentOfInvestment" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaapAmortizationOfDebtDiscountPremium" />
      <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapAmortizationOfDebtDiscountPremium" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_IncreaseDecreaseInInProvisionForDoubtfulAccounts" xlink:label="loc_GNLNIncreaseDecreaseInInProvisionForDoubtfulAccounts" />
      <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNIncreaseDecreaseInInProvisionForDoubtfulAccounts" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_IncreaseDecreaseInDigitalAssetsTransactionFees" xlink:label="loc_GNLNIncreaseDecreaseInDigitalAssetsTransactionFees" />
      <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GNLNIncreaseDecreaseInDigitalAssetsTransactionFees" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsReceivable" />
      <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsReceivable" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaapIncreaseDecreaseInInventories" />
      <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInInventories" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDepositOtherAssets" xlink:label="loc_us-gaapIncreaseDecreaseInDepositOtherAssets" />
      <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInDepositOtherAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets" xlink:label="loc_us-gaapIncreaseDecreaseInOtherCurrentAssets" />
      <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInOtherCurrentAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsPayable" />
      <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsPayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" />
      <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInSecurityDeposits" xlink:label="loc_us-gaapIncreaseDecreaseInSecurityDeposits" />
      <link:calculationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInSecurityDeposits" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentForAcquisitionCryptoAsset" xlink:label="loc_us-gaapPaymentForAcquisitionCryptoAsset" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentForAcquisitionCryptoAsset" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_PurchasesOfDigitalAssets" xlink:label="loc_GNLNPurchasesOfDigitalAssets" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_GNLNPurchasesOfDigitalAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="loc_us-gaapProceedsFromIssuanceOrSaleOfEquity" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromIssuanceOrSaleOfEquity" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfNotesPayable" xlink:label="loc_us-gaapRepaymentsOfNotesPayable" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapRepaymentsOfNotesPayable" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/BusinessOperationsAndOrganization" xlink:title="999012 - Disclosure - BUSINESS OPERATIONS AND ORGANIZATION" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SummaryOfSignificantAccountingPolicies" xlink:title="999013 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/FairValueOfFinancialInstruments" xlink:title="999014 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/Leases" xlink:title="999015 - Disclosure - LEASES" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/CommitmentsAndContingencies" xlink:title="999016 - Disclosure - COMMITMENTS AND CONTINGENCIES" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SupplementalFinancialStatementInformation" xlink:title="999017 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/DigitalAssets" xlink:title="999018 - Disclosure - DIGITAL ASSETS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/StockholdersEquity" xlink:title="999019 - Disclosure - STOCKHOLDERS&#8217; EQUITY" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/CompensationPlans" xlink:title="999020 - Disclosure - COMPENSATION PLANS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/IncomeTaxes" xlink:title="999021 - Disclosure - INCOME TAXES" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SegmentReporting" xlink:title="999022 - Disclosure - SEGMENT REPORTING" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SubsequentEvents" xlink:title="999023 - Disclosure - SUBSEQUENT EVENTS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="999024 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/FairValueOfFinancialInstrumentsTables" xlink:title="999025 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/LeasesTables" xlink:title="999026 - Disclosure - LEASES (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SupplementalFinancialStatementInformationTables" xlink:title="999027 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/DigitalAssetsTables" xlink:title="999028 - Disclosure - DIGITAL ASSETS (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/StockholdersEquityTables" xlink:title="999029 - Disclosure - STOCKHOLDERS&#8217; EQUITY (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/CompensationPlansTables" xlink:title="999030 - Disclosure - COMPENSATION PLANS (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SegmentReportingTables" xlink:title="999031 - Disclosure - SEGMENT REPORTING (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/BusinessOperationsAndOrganizationDetailsNarrative" xlink:title="999032 - Disclosure - BUSINESS OPERATIONS AND ORGANIZATION (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:title="999033 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfFairValueLiabilitiesMeasuredOnRecurringBasisDetails" xlink:title="999034 - Disclosure - SCHEDULE OF FAIR VALUE, LIABILITIES MEASURED ON RECURRING BASIS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/FairValueOfFinancialInstrumentsDetailsNarrative" xlink:title="999035 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfLeaseCostDetails" xlink:title="999036 - Disclosure - SCHEDULE OF LEASE COST (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseCost" xlink:label="loc_us-gaapLeaseCost" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaapOperatingLeaseCost" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLeaseCost" xlink:to="loc_us-gaapOperatingLeaseCost" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableLeaseCost" xlink:label="loc_us-gaapVariableLeaseCost" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLeaseCost" xlink:to="loc_us-gaapVariableLeaseCost" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/LeasesDetailsNarrative" xlink:title="999037 - Disclosure - LEASES (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/CommitmentsAndContingenciesDetailsNarrative" xlink:title="999038 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfAccountsReceivableDetails" xlink:title="999039 - Disclosure - SCHEDULE OF ACCOUNTS RECEIVABLE (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaapAccountsReceivableNetCurrent" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_AccountsReceivableAmortizedCost" xlink:label="loc_GNLNAccountsReceivableAmortizedCost" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccountsReceivableNetCurrent" xlink:to="loc_GNLNAccountsReceivableAmortizedCost" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaapAllowanceForDoubtfulAccountsReceivableCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccountsReceivableNetCurrent" xlink:to="loc_us-gaapAllowanceForDoubtfulAccountsReceivableCurrent" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SummarizesChangesInAllowanceForCreditLossesForAccountsReceivableDetails" xlink:title="999040 - Disclosure - SUMMARIZES THE CHANGES IN THE ALLOWANCE FOR CREDIT LOSSES FOR ACCOUNTS RECEIVABLE (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfPropertyPlantAndEquipmentLessDepreciationAndAmortizationDetails" xlink:title="999041 - Disclosure - SCHEDULE OF PROPERTY PLANT AND EQUIPMENT LESS DEPRECIATION AND AMORTIZATION (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaapPropertyPlantAndEquipmentGross" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:to="loc_us-gaapPropertyPlantAndEquipmentGross" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaapAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:to="loc_us-gaapAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfOtherCurrentAssetsDetails" xlink:title="999042 - Disclosure - SCHEDULE OF OTHER CURRENT ASSETS (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaapOtherAssetsCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaapPrepaidExpenseCurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOtherAssetsCurrent" xlink:to="loc_us-gaapPrepaidExpenseCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_CustomsBondsCurrent" xlink:label="loc_GNLNCustomsBondsCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOtherAssetsCurrent" xlink:to="loc_GNLNCustomsBondsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_OtherAssetCurrent" xlink:label="loc_GNLNOtherAssetCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOtherAssetsCurrent" xlink:to="loc_GNLNOtherAssetCurrent" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesDetails" xlink:title="999043 - Disclosure - SCHEDULE OF ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaapAccrualForEnvironmentalLossContingencies" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccruedLiabilitiesCurrent" xlink:to="loc_us-gaapAccrualForEnvironmentalLossContingencies" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaapEmployeeRelatedLiabilitiesCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccruedLiabilitiesCurrent" xlink:to="loc_us-gaapEmployeeRelatedLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaapOtherAccruedLiabilitiesCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccruedLiabilitiesCurrent" xlink:to="loc_us-gaapOtherAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SupplementalFinancialStatementInformationDetailsNarrative" xlink:title="999044 - Disclosure - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfUnitsHeldCostBasisAndFairValueDetails" xlink:title="999045 - Disclosure - SCHEDULE OF UNITS HELD, COST BASIS, AND FAIR VALUE (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfCryptocurrencyActivitiesDetails" xlink:title="999046 - Disclosure - SCHEDULE OF CRYPTOCURRENCY ACTIVITIES (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfRestrictedAndUnrestrictedBera-equivalentHoldingsDetails" xlink:title="999047 - Disclosure - SCHEDULE OF RESTRICTED AND UNRESTRICTED BERA-EQUIVALENT HOLDINGS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfWarrantActivityDetails" xlink:title="999048 - Disclosure - SCHEDULE OF WARRANT ACTIVITY (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfEarningsPerShareBasicAndDilutedDetails" xlink:title="999049 - Disclosure - SCHEDULE OF EARNINGS PER SHARE BASIC AND DILUTED (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="loc_us-gaapNetIncomeLossAvailableToCommonStockholdersDiluted" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="loc_us-gaapProfitLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfOutstandingPotentiallyDilutiveSecuritiesDetails" xlink:title="999050 - Disclosure - SCHEDULE OF OUTSTANDING POTENTIALLY DILUTIVE SECURITIES (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/StockholdersEquityDetailsNarrative" xlink:title="999051 - Disclosure - STOCKHOLDERS&#8217; EQUITY (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfStockOptionActivityDetails" xlink:title="999052 - Disclosure - SCHEDULE OF STOCK OPTION ACTIVITY (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfStockOptionsOutstandingVestedDetails" xlink:title="999053 - Disclosure - SCHEDULE OF STOCK OPTIONS OUTSTANDING VESTED (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfEquityBasedCompensationExpenseDetails" xlink:title="999054 - Disclosure - SCHEDULE OF EQUITY BASED COMPENSATION EXPENSE (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/CompensationPlansDetailsNarrative" xlink:title="999055 - Disclosure - COMPENSATION PLANS (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/IncomeTaxesDetailsNarrative" xlink:title="999056 - Disclosure - INCOME TAXES (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfNetSalesByMajorProductCategoryDetails" xlink:title="999057 - Disclosure - SCHEDULE OF NET SALES BY MAJOR PRODUCT CATEGORY (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaapGrossProfit" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues" xlink:label="loc_us-gaapRevenues" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapGrossProfit" xlink:to="loc_us-gaapRevenues" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaapCostOfGoodsAndServicesSold" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapGrossProfit" xlink:to="loc_us-gaapCostOfGoodsAndServicesSold" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfDetailedInformationAboutReportableSegmentDetails" xlink:title="999058 - Disclosure - SCHEDULE OF DETAILED INFORMATION ABOUT REPORTABLE SEGMENT (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaapOperatingExpenses" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_us-gaapLaborAndRelatedExpense" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapLaborAndRelatedExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="gnln-20260630.xsd#GNLN_StockBasedCompensationStrategicAdvisoryWarrants" xlink:label="loc_GNLNStockBasedCompensationStrategicAdvisoryWarrants" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_GNLNStockBasedCompensationStrategicAdvisoryWarrants" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaapGeneralAndAdministrativeExpense" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapGeneralAndAdministrativeExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaapDepreciationAndAmortization" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapDepreciationAndAmortization" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfSegmentReportingInformationBySegmentDetails" xlink:title="999059 - Disclosure - SCHEDULE OF SEGMENT REPORTING INFORMATION, BY SEGMENT (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/ScheduleOfLong-livedAssetsByGeographicAreaDetails" xlink:title="999060 - Disclosure - SCHEDULE OF LONG-LIVED ASSETS BY GEOGRAPHIC AREA (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://gnln.com/role/SegmentReportingDetailsNarrative" xlink:title="999061 - Disclosure - SEGMENT REPORTING (Details Narrative)" />
</link:linkbase>
