3.26.1 html 322 375 1 false 92 0 false 15 false false R1.htm 0000001 - Document - COVER Sheet http://fluenceenergy.com/role/COVER COVER Cover 1 false false R2.htm 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://fluenceenergy.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) Sheet http://fluenceenergy.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSPARENTHETICAL CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) Statements 3 false false R4.htm 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) Sheet http://fluenceenergy.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) Statements 4 false false R5.htm 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) Sheet http://fluenceenergy.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSSUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) Statements 5 false false R6.htm 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) Sheet http://fluenceenergy.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) Statements 6 false false R7.htm 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Sheet http://fluenceenergy.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Statements 7 false false R8.htm 9952157 - Disclosure - Organization and Operations Sheet http://fluenceenergy.com/role/OrganizationandOperations Organization and Operations Notes 8 false false R9.htm 9952158 - Disclosure - Summary of Significant Accounting Policies and Estimates Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimates Summary of Significant Accounting Policies and Estimates Notes 9 false false R10.htm 9952159 - Disclosure - (Loss) income per Share Sheet http://fluenceenergy.com/role/LossincomeperShare (Loss) income per Share Notes 10 false false R11.htm 9952160 - Disclosure - Revenue from Contracts with Customers Sheet http://fluenceenergy.com/role/RevenuefromContractswithCustomers Revenue from Contracts with Customers Notes 11 false false R12.htm 9952161 - Disclosure - Inventory, Net Sheet http://fluenceenergy.com/role/InventoryNet Inventory, Net Notes 12 false false R13.htm 9952162 - Disclosure - Other Current Assets Sheet http://fluenceenergy.com/role/OtherCurrentAssets Other Current Assets Notes 13 false false R14.htm 9952163 - Disclosure - Intangible Assets, Net Sheet http://fluenceenergy.com/role/IntangibleAssetsNet Intangible Assets, Net Notes 14 false false R15.htm 9952164 - Disclosure - Goodwill Sheet http://fluenceenergy.com/role/Goodwill Goodwill Notes 15 false false R16.htm 9952165 - Disclosure - Leases Sheet http://fluenceenergy.com/role/Leases Leases Notes 16 false false R17.htm 9952166 - Disclosure - Accruals and Provisions Sheet http://fluenceenergy.com/role/AccrualsandProvisions Accruals and Provisions Notes 17 false false R18.htm 9952167 - Disclosure - Debt Sheet http://fluenceenergy.com/role/Debt Debt Notes 18 false false R19.htm 9952168 - Disclosure - Convertible Senior Notes, Net Notes http://fluenceenergy.com/role/ConvertibleSeniorNotesNet Convertible Senior Notes, Net Notes 19 false false R20.htm 9952169 - Disclosure - Income Taxes Sheet http://fluenceenergy.com/role/IncomeTaxes Income Taxes Notes 20 false false R21.htm 9952170 - Disclosure - Commitments and Contingencies Sheet http://fluenceenergy.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 21 false false R22.htm 9952171 - Disclosure - Related-Party Transactions Sheet http://fluenceenergy.com/role/RelatedPartyTransactions Related-Party Transactions Notes 22 false false R23.htm 9952172 - Disclosure - Stock-Based Compensation Sheet http://fluenceenergy.com/role/StockBasedCompensation Stock-Based Compensation Notes 23 false false R24.htm 9952173 - Disclosure - Supply Chain Financing Sheet http://fluenceenergy.com/role/SupplyChainFinancing Supply Chain Financing Notes 24 false false R25.htm 9952174 - Disclosure - Derivatives and Hedging Sheet http://fluenceenergy.com/role/DerivativesandHedging Derivatives and Hedging Notes 25 false false R26.htm 9952175 - Disclosure - Sale of Receivables Sheet http://fluenceenergy.com/role/SaleofReceivables Sale of Receivables Notes 26 false false R27.htm 9952176 - Disclosure - Subsequent Events Sheet http://fluenceenergy.com/role/SubsequentEvents Subsequent Events Notes 27 false false R28.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 28 false false R29.htm 9955511 - Disclosure - Summary of Significant Accounting Policies and Estimates (Policies) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesPolicies Summary of Significant Accounting Policies and Estimates (Policies) Policies http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimates 29 false false R30.htm 9955512 - Disclosure - Summary of Significant Accounting Policies and Estimates (Tables) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesTables Summary of Significant Accounting Policies and Estimates (Tables) Tables http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimates 30 false false R31.htm 9955513 - Disclosure - (Loss) income per Share (Tables) Sheet http://fluenceenergy.com/role/LossincomeperShareTables (Loss) income per Share (Tables) Tables http://fluenceenergy.com/role/LossincomeperShare 31 false false R32.htm 9955514 - Disclosure - Revenue from Contracts with Customers (Tables) Sheet http://fluenceenergy.com/role/RevenuefromContractswithCustomersTables Revenue from Contracts with Customers (Tables) Tables http://fluenceenergy.com/role/RevenuefromContractswithCustomers 32 false false R33.htm 9955515 - Disclosure - Inventory, Net (Tables) Sheet http://fluenceenergy.com/role/InventoryNetTables Inventory, Net (Tables) Tables http://fluenceenergy.com/role/InventoryNet 33 false false R34.htm 9955516 - Disclosure - Other Current Assets (Tables) Sheet http://fluenceenergy.com/role/OtherCurrentAssetsTables Other Current Assets (Tables) Tables http://fluenceenergy.com/role/OtherCurrentAssets 34 false false R35.htm 9955517 - Disclosure - Intangible Assets, Net (Tables) Sheet http://fluenceenergy.com/role/IntangibleAssetsNetTables Intangible Assets, Net (Tables) Tables http://fluenceenergy.com/role/IntangibleAssetsNet 35 false false R36.htm 9955518 - Disclosure - Goodwill (Tables) Sheet http://fluenceenergy.com/role/GoodwillTables Goodwill (Tables) Tables http://fluenceenergy.com/role/Goodwill 36 false false R37.htm 9955519 - Disclosure - Leases (Tables) Sheet http://fluenceenergy.com/role/LeasesTables Leases (Tables) Tables http://fluenceenergy.com/role/Leases 37 false false R38.htm 9955520 - Disclosure - Accruals and Provisions (Tables) Sheet http://fluenceenergy.com/role/AccrualsandProvisionsTables Accruals and Provisions (Tables) Tables http://fluenceenergy.com/role/AccrualsandProvisions 38 false false R39.htm 9955521 - Disclosure - Convertible Senior Notes, Net (Tables) Notes http://fluenceenergy.com/role/ConvertibleSeniorNotesNetTables Convertible Senior Notes, Net (Tables) Tables http://fluenceenergy.com/role/ConvertibleSeniorNotesNet 39 false false R40.htm 9955522 - Disclosure - Commitments and Contingencies (Tables) Sheet http://fluenceenergy.com/role/CommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://fluenceenergy.com/role/CommitmentsandContingencies 40 false false R41.htm 9955523 - Disclosure - Related-Party Transactions (Tables) Sheet http://fluenceenergy.com/role/RelatedPartyTransactionsTables Related-Party Transactions (Tables) Tables http://fluenceenergy.com/role/RelatedPartyTransactions 41 false false R42.htm 9955524 - Disclosure - Stock-Based Compensation (Tables) Sheet http://fluenceenergy.com/role/StockBasedCompensationTables Stock-Based Compensation (Tables) Tables http://fluenceenergy.com/role/StockBasedCompensation 42 false false R43.htm 9955525 - Disclosure - Derivatives and Hedging (Tables) Sheet http://fluenceenergy.com/role/DerivativesandHedgingTables Derivatives and Hedging (Tables) Tables http://fluenceenergy.com/role/DerivativesandHedging 43 false false R44.htm 9955526 - Disclosure - Organization and Operations (Details) Sheet http://fluenceenergy.com/role/OrganizationandOperationsDetails Organization and Operations (Details) Details http://fluenceenergy.com/role/OrganizationandOperations 44 false false R45.htm 9955527 - Disclosure - Summary of Significant Accounting Policies and Estimates - Schedule of Non-controlling Interest (Details) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesScheduleofNoncontrollingInterestDetails Summary of Significant Accounting Policies and Estimates - Schedule of Non-controlling Interest (Details) Details 45 false false R46.htm 9955528 - Disclosure - Summary of Significant Accounting Policies and Estimates - Schedule of Cash, Cash Equivalents, and Restricted Cash (Details) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesScheduleofCashCashEquivalentsandRestrictedCashDetails Summary of Significant Accounting Policies and Estimates - Schedule of Cash, Cash Equivalents, and Restricted Cash (Details) Details 46 false false R47.htm 9955529 - Disclosure - Summary of Significant Accounting Policies and Estimates - Schedule of Cash Restrictions (Details) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesScheduleofCashRestrictionsDetails Summary of Significant Accounting Policies and Estimates - Schedule of Cash Restrictions (Details) Details 47 false false R48.htm 9955530 - Disclosure - Summary of Significant Accounting Policies and Estimates - Revenue and Cost Recognition Narrative (Details) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesRevenueandCostRecognitionNarrativeDetails Summary of Significant Accounting Policies and Estimates - Revenue and Cost Recognition Narrative (Details) Details 48 false false R49.htm 9955531 - Disclosure - Summary of Significant Accounting Policies and Estimates - Software Development Costs Narrative (Details) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesSoftwareDevelopmentCostsNarrativeDetails Summary of Significant Accounting Policies and Estimates - Software Development Costs Narrative (Details) Details 49 false false R50.htm 9955532 - Disclosure - Summary of Significant Accounting Policies and Estimates - Government Incentives and Grants Narrative (Details) Sheet http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesGovernmentIncentivesandGrantsNarrativeDetails Summary of Significant Accounting Policies and Estimates - Government Incentives and Grants Narrative (Details) Details 50 false false R51.htm 9955533 - Disclosure - Summary of Significant Accounting Policies and Estimates - Convertible Senior Notes Narrative (Details) Notes http://fluenceenergy.com/role/SummaryofSignificantAccountingPoliciesandEstimatesConvertibleSeniorNotesNarrativeDetails Summary of Significant Accounting Policies and Estimates - Convertible Senior Notes Narrative (Details) Details 51 false false R52.htm 9955534 - Disclosure - (Loss) income per Share - Narrative (Details) Sheet http://fluenceenergy.com/role/LossincomeperShareNarrativeDetails (Loss) income per Share - Narrative (Details) Details 52 false false R53.htm 9955535 - Disclosure - (Loss) income per Share - Schedule of Dilutive Securities (Details) Sheet http://fluenceenergy.com/role/LossincomeperShareScheduleofDilutiveSecuritiesDetails (Loss) income per Share - Schedule of Dilutive Securities (Details) Details 53 false false R54.htm 9955536 - Disclosure - (Loss) income per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) Sheet http://fluenceenergy.com/role/LossincomeperShareScheduleofEarningsPerShareBasicandDilutedDetails (Loss) income per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) Details 54 false false R55.htm 9955537 - Disclosure - Revenue from Contracts with Customers - Schedule of Revenue by Contracts (Details) Sheet http://fluenceenergy.com/role/RevenuefromContractswithCustomersScheduleofRevenuebyContractsDetails Revenue from Contracts with Customers - Schedule of Revenue by Contracts (Details) Details 55 false false R56.htm 9955538 - Disclosure - Revenue from Contracts with Customers - Schedule of Geographical Regions (Details) Sheet http://fluenceenergy.com/role/RevenuefromContractswithCustomersScheduleofGeographicalRegionsDetails Revenue from Contracts with Customers - Schedule of Geographical Regions (Details) Details 56 false false R57.htm 9955539 - Disclosure - Revenue from Contracts with Customers - Narrative (Details) Sheet http://fluenceenergy.com/role/RevenuefromContractswithCustomersNarrativeDetails Revenue from Contracts with Customers - Narrative (Details) Details 57 false false R58.htm 9955540 - Disclosure - Revenue from Contracts with Customers - Schedule of Contract Liability (Details) Sheet http://fluenceenergy.com/role/RevenuefromContractswithCustomersScheduleofContractLiabilityDetails Revenue from Contracts with Customers - Schedule of Contract Liability (Details) Details 58 false false R59.htm 9955541 - Disclosure - Inventory, Net (Details) Sheet http://fluenceenergy.com/role/InventoryNetDetails Inventory, Net (Details) Details http://fluenceenergy.com/role/InventoryNetTables 59 false false R60.htm 9955542 - Disclosure - Other Current Assets (Details) Sheet http://fluenceenergy.com/role/OtherCurrentAssetsDetails Other Current Assets (Details) Details http://fluenceenergy.com/role/OtherCurrentAssetsTables 60 false false R61.htm 9955543 - Disclosure - Intangible Assets, Net - Schedule of Amortized Cost (Details) Sheet http://fluenceenergy.com/role/IntangibleAssetsNetScheduleofAmortizedCostDetails Intangible Assets, Net - Schedule of Amortized Cost (Details) Details 61 false false R62.htm 9955544 - Disclosure - Intangible Assets, Net - Narrative (Details) Sheet http://fluenceenergy.com/role/IntangibleAssetsNetNarrativeDetails Intangible Assets, Net - Narrative (Details) Details 62 false false R63.htm 9955545 - Disclosure - Goodwill - Narrative (Details) Sheet http://fluenceenergy.com/role/GoodwillNarrativeDetails Goodwill - Narrative (Details) Details 63 false false R64.htm 9955546 - Disclosure - Goodwill - Schedule of Goodwill (Details) Sheet http://fluenceenergy.com/role/GoodwillScheduleofGoodwillDetails Goodwill - Schedule of Goodwill (Details) Details 64 false false R65.htm 9955547 - Disclosure - Leases - Narrative (Details) Sheet http://fluenceenergy.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 65 false false R66.htm 9955548 - Disclosure - Leases - Schedule of Assets and Liabilities Operating (Details) Sheet http://fluenceenergy.com/role/LeasesScheduleofAssetsandLiabilitiesOperatingDetails Leases - Schedule of Assets and Liabilities Operating (Details) Details 66 false false R67.htm 9955549 - Disclosure - Accruals and Provisions (Details) Sheet http://fluenceenergy.com/role/AccrualsandProvisionsDetails Accruals and Provisions (Details) Details http://fluenceenergy.com/role/AccrualsandProvisionsTables 67 false false R68.htm 9955550 - Disclosure - Debt (Details) Sheet http://fluenceenergy.com/role/DebtDetails Debt (Details) Details http://fluenceenergy.com/role/Debt 68 false false R69.htm 9955551 - Disclosure - Convertible Senior Notes, Net - Narrative (Details) Notes http://fluenceenergy.com/role/ConvertibleSeniorNotesNetNarrativeDetails Convertible Senior Notes, Net - Narrative (Details) Details 69 false false R70.htm 9955552 - Disclosure - Convertible Senior Notes, Net - Schedule of Net Carrying Value and Fair Value of Convertible Senior Notes (Details) Notes http://fluenceenergy.com/role/ConvertibleSeniorNotesNetScheduleofNetCarryingValueandFairValueofConvertibleSeniorNotesDetails Convertible Senior Notes, Net - Schedule of Net Carrying Value and Fair Value of Convertible Senior Notes (Details) Details 70 false false R71.htm 9955553 - Disclosure - Convertible Senior Notes, Net- Schedule of Interest Expense (Details) Notes http://fluenceenergy.com/role/ConvertibleSeniorNotesNetScheduleofInterestExpenseDetails Convertible Senior Notes, Net- Schedule of Interest Expense (Details) Details 71 false false R72.htm 9955554 - Disclosure - Income Taxes (Details) Sheet http://fluenceenergy.com/role/IncomeTaxesDetails Income Taxes (Details) Details http://fluenceenergy.com/role/IncomeTaxes 72 false false R73.htm 9955555 - Disclosure - Commitments and Contingencies - Schedule of Guarantees (Details) Sheet http://fluenceenergy.com/role/CommitmentsandContingenciesScheduleofGuaranteesDetails Commitments and Contingencies - Schedule of Guarantees (Details) Details 73 false false R74.htm 9955556 - Disclosure - Commitments and Contingencies - Schedule of Purchase Commitments (Details) Sheet http://fluenceenergy.com/role/CommitmentsandContingenciesScheduleofPurchaseCommitmentsDetails Commitments and Contingencies - Schedule of Purchase Commitments (Details) Details 74 false false R75.htm 9955557 - Disclosure - Commitments and Contingencies - Narrative (Details) Sheet http://fluenceenergy.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies - Narrative (Details) Details 75 false false R76.htm 9955558 - Disclosure - Commitments and Contingencies - Schedule of Warranty Liabilities (Details) Sheet http://fluenceenergy.com/role/CommitmentsandContingenciesScheduleofWarrantyLiabilitiesDetails Commitments and Contingencies - Schedule of Warranty Liabilities (Details) Details 76 false false R77.htm 9955559 - Disclosure - Related-Party Transactions - Narrative (Details) Sheet http://fluenceenergy.com/role/RelatedPartyTransactionsNarrativeDetails Related-Party Transactions - Narrative (Details) Details 77 false false R78.htm 9955560 - Disclosure - Related-Party Transactions - Schedule of Balance Sheet Information (Details) Sheet http://fluenceenergy.com/role/RelatedPartyTransactionsScheduleofBalanceSheetInformationDetails Related-Party Transactions - Schedule of Balance Sheet Information (Details) Details 78 false false R79.htm 9955561 - Disclosure - Related-Party Transactions - Schedule of Statement of Operations and Comprehensive Loss Information (Details) Sheet http://fluenceenergy.com/role/RelatedPartyTransactionsScheduleofStatementofOperationsandComprehensiveLossInformationDetails Related-Party Transactions - Schedule of Statement of Operations and Comprehensive Loss Information (Details) Details 79 false false R80.htm 9955562 - Disclosure - Stock-Based Compensation - Narrative (Details) Sheet http://fluenceenergy.com/role/StockBasedCompensationNarrativeDetails Stock-Based Compensation - Narrative (Details) Details 80 false false R81.htm 9955563 - Disclosure - Stock-Based Compensation - Schedule of RSUS (Details) Sheet http://fluenceenergy.com/role/StockBasedCompensationScheduleofRSUSDetails Stock-Based Compensation - Schedule of RSUS (Details) Details 81 false false R82.htm 9955564 - Disclosure - Stock-Based Compensation - Schedule of Stock Based Compensation Expense (Details) Sheet http://fluenceenergy.com/role/StockBasedCompensationScheduleofStockBasedCompensationExpenseDetails Stock-Based Compensation - Schedule of Stock Based Compensation Expense (Details) Details 82 false false R83.htm 9955565 - Disclosure - Supply Chain Financing (Details) Sheet http://fluenceenergy.com/role/SupplyChainFinancingDetails Supply Chain Financing (Details) Details http://fluenceenergy.com/role/SupplyChainFinancing 83 false false R84.htm 9955566 - Disclosure - Derivatives and Hedging - Schedule of Cash Flow Hedging Instruments (Details) Sheet http://fluenceenergy.com/role/DerivativesandHedgingScheduleofCashFlowHedgingInstrumentsDetails Derivatives and Hedging - Schedule of Cash Flow Hedging Instruments (Details) Details 84 false false R85.htm 9955567 - Disclosure - Derivatives and Hedging - Schedule of Changes in the Cumulative Impact (Details) Sheet http://fluenceenergy.com/role/DerivativesandHedgingScheduleofChangesintheCumulativeImpactDetails Derivatives and Hedging - Schedule of Changes in the Cumulative Impact (Details) Details 85 false false R86.htm 9955568 - Disclosure - Sale of Receivables (Details) Sheet http://fluenceenergy.com/role/SaleofReceivablesDetails Sale of Receivables (Details) Details http://fluenceenergy.com/role/SaleofReceivables 86 false false All Reports Book All Reports flnc-20260630.htm flnc-20260630.xsd flnc-20260630_cal.xml flnc-20260630_def.xml flnc-20260630_lab.xml flnc-20260630_pre.xml http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 true true