Document and Entity Information: Document Information [Table] Document Information [Line Items] Document and Entity Information Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Condensed Consolidated Balance Sheets Statement [Table] Statement [Line Items] Changes in stockholders' equity Statement Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalent Cash and cash equivalents Unrestricted cash and cash equivalents Restricted Cash and Investments, Current Restricted cash Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable, net of allowance of $44,980 as of March 31, 2026 and $46,805 as of December 31, 2025 Accounts receivable, net Inventory, Net Inventory, net Inventory Inventory, net Contract with Customer, Asset, after Allowance for Credit Loss, Current Contract assets Prepaid Expense and Other Assets, Current Prepaid expenses, tax credits, and other current assets Prepaid expenses, tax credits, and other current assets Assets, Current Total current assets Total current assets Restricted Cash and Investments, Noncurrent Restricted cash Property, Plant and Equipment, Net Property, plant, and equipment, net Property, plant, and equipment, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Right of use assets related to finance leases, net Operating Lease, Right-of-Use Asset Right of use assets related to operating leases, net Amount, before accumulated depreciation, of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease. Property, Plant, and Equipment, Lessor Asset under Operating Lease, after Accumulated Depreciation Equipment related to power purchase agreements and fuel delivered to customers, net Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Contract assets Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investments in non-consolidated entities and non-marketable securities Other Assets Other assets Assets Total assets Total assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accounts payable Accrued Liabilities, Current Accrued expenses Deferred Revenue, Current Deferred revenue and other contract liabilities Operating Lease, Liability, Current Operating lease liabilities Finance Lease, Liability, Current Finance lease liabilities Amount of short-term finance obligation. Finance Obligation, Current Finance obligations Convertible Notes Payable, Current Current portion of convertible debt instruments, net Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation and convertible debt. Long-Term Debt, Current Maturities Excluding Convertible Debt Current portion of long-term debt Business Combination, Contingent Consideration, Liability, Current Contingent consideration, loss accrual for service contracts, and other current liabilities (of which $601 was measured at fair value as of March 31, 2026 and $4,871 was measured at fair value as of December 31, 2025) Liabilities, Current Total current liabilities Deferred Revenue, Noncurrent Deferred revenue and other contract liabilities Operating Lease, Liability, Noncurrent Operating lease liabilities Finance Lease, Liability, Noncurrent Finance lease liabilities Amount of long-term finance obligation. Finance Obligation, Non-Current Finance obligations Warrants and Rights Outstanding Ending balance Beginning balance Fair value of warrant liabilities Warrant liabilities Convertible Notes Payable, Noncurrent Convertible debt instruments, net Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding convertible senior notes and amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Long-term Debt Non Current, Excluding Convertible Notes Long-term debt Business Combination, Contingent Consideration, Liability, Noncurrent Contingent consideration, loss accrual for service contracts, and other liabilities (of which $7,185 was measured at fair value as of March 31, 2026 and $6,906 was measured at fair value as of December 31, 2025) Liabilities Total liabilities Total liabilities Equity, Attributable to Parent [Abstract] Stockholders' equity: Common Stock, Value, Issued Common stock, $.01 par value per share; 3,000,000,000 shares authorized as of March 31, 2026 and 1,500,000,000 shares authorized as of December 31, 2025; Issued (including shares in treasury): 1,395,643,390 as of March 31, 2026 and 1,394,241,538 as of December 31, 2025 Additional Paid in Capital Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated deficit Treasury Stock, Common, Value Less common stock in treasury: X as of March 31, 2026 and 970,588 as of December 31, 2025 Equity, Attributable to Parent Total Plug Power Inc. stockholders' equity Equity, Attributable to Noncontrolling Interest Non-controlling interest Equity, Including Portion Attributable to Noncontrolling Interest Ending Balance Beginning Balance Stockholders' equity Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Consolidated Entities [Axis] Consolidated Entities [Domain] Variable Interest Entity, Primary Beneficiary [Member] Variable interest entities VIE Accounts Receivable, Allowance for Credit Loss, Current Allowance for credit losses Fair value amount of contingent consideration loss accrual for service contracts and other current liabilities classified as current. Contingent Consideration at fair value, Liability, Current Fair value of contingent consideration, current Fair value amount of contingent consideration loss accrual for service contracts and other current liabilities classified as non-current. Contingent Consideration at Fair Value, Liability, Non-Current Fair value of contingent consideration, non-current Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Ending Balance, shares Beginning Balance, shares Common stock, shares issued (including shares in treasury) Treasury Stock, Common, Shares Treasury Stock, Ending Balance, shares Treasury Stock, Beginning Balance, shares Common stock in treasury, shares Income Statement [Abstract] Product and Service [Axis] Product and Service [Domain] Represents the information pertaining to sales of equipment and related infrastructure. Sales of Equipment and Related Infrastructure [Member] Sales of equipment, related infrastructure and other Represents the information pertaining to Services performed on fuel cell systems and related infrastructure. Services Performed On Fuel Cell Systems And Related Infrastructure [Member] Services performed on fuel cell systems and related infrastructure Represents information pertaining to loss on contracts related to service. Provision For Loss Contracts Related To Service [Member] Benefit/(provision) for loss contracts related to service (Benefit)/provision for loss contracts related to service Represents information pertaining to Power Purchase Agreements (PPAs), the Company signed sale/leaseback agreements with the Company's primary financial institution M & T Bank or the Bank) to facilitate its commercial transactions with key customers. Power Purchase Agreements [Member] Power purchase agreements Represents the information pertaining to fuel delivered to customers and related equipment. Fuel Delivered To Customers And Related Equipment [Member] Fuel delivered to customers and related equipment Represents the information pertaining to other product and services. Other Product And Services [Member] Other Other costs of revenue Revenues [Abstract] Net revenue: Revenue from Contract with Customer, Including Assessed Tax Net revenue Revenues Net revenue Revenue Cost of Revenue [Abstract] Cost of revenue: Cost of Product and Service Sold Cost of revenue Cost of revenue Cost of Revenue Total cost of revenue Gross Profit Gross loss Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development Research and development Selling, General and Administrative Expense Selling, general and administrative Selling, general and administrative Restructuring and Related Cost, Incurred Cost Restructuring Total restructuring charges Asset Impairment Charges Impairment Impairment Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Change in fair value of contingent consideration Operating Expenses Total operating expenses Operating Income (Loss) Operating loss Investment Income, Interest Interest income Interest Expense, Operating and Nonoperating Interest expense Other Nonoperating Income (Expense) Other income, net Gain (Loss) on Extinguishment of Debt Gain/(loss) on extinguishment of convertible debt instruments and finance obligations Amount of addition (reduction) to the amount at which convertible debt could be incurred (settled) in a current transaction between willing parties. Convertible Debt, Fair Value Adjustment Change in fair value of convertible debt instruments Change in fair value of convertible debt instruments Fair Value Adjustment of Warrants Change in fair value of warrant liabilities Change in fair value of warrant liabilities Income (Loss) from Equity Method Investments Loss on equity method investments Loss on equity method investments Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Income tax expense Income tax expense (benefit) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss attributable to the company Net loss Net loss Net Income (Loss) Attributable to Noncontrolling Interest Net loss attributable to non-controlling interest Net loss attributable to Plug Power Inc. Earnings Per Share [Abstract] Net loss per share attributable to Plug Power Inc.: Earnings Per Share, Basic Net loss per share, basic (in dollars per share) Earnings Per Share, Diluted Net loss per share, diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted average number of common stock outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted average number of common stock outstanding, diluted (in shares) Condensed Consolidated Statements of Comprehensive Loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive loss Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Foreign currency translation losses Foreign currency translation loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Less: comprehensive loss attributable to non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive loss attributable to Plug Power Inc. Condensed Consolidated Statements of Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Parent [Member] Total Plug Power Stockholders' Equity Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-in Capital AOCI Including Portion Attributable to Noncontrolling Interest [Member] Accumulated Other Comprehensive Income/(Loss) Treasury Stock, Common [Member] Treasury Stock Retained Earnings [Member] Accumulated Deficit Noncontrolling Interest [Member] Non-controlling Interests Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Represents information pertaining to common warrants. Common Warrants [Member] Common Warrants Represents information pertaining to New Pre Funded Warrant. New Pre Funded Warrant [Member] New Pre-Funded Warrants Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Other Comprehensive Income (Loss), Net of Tax Other comprehensive loss Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Stock-based compensation Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Stock-based compensation, shares Stock Issued During Period, Value, New Issues Public offerings, common stock, net of issuance costs Stock Issued During Period, Shares, New Issues Public offerings, common stock, net of issuance costs, shares Number of shares issued Value of stock issued as a result of the exercise of stock options and issuance of restricted stock awards. Stock Issued During Period, Value, Stock Options Exercised and Restricted Stock Award Issuance Stock option exercises and issuance of common stock upon grant/vesting of restricted stock and restricted stock unit awards Number of stock issued as a result of the exercise of stock options and issuance of restricted stock awards. Stock Issued During Period, Shares, Stock Options Exercised and Restricted Stock Award Issuance Stock option exercises and issuance of common stock upon grant/vesting of restricted stock and restricted stock unit awards, shares Treasury Stock, Value, Acquired, Cost Method Treasury stock acquired from employees upon exercise of stock options and vesting of restricted stock and restricted stock unit awards Treasury Stock, Shares, Acquired Treasury stock acquired from employees upon exercise of stock options and vesting of restricted stock and restricted stock unit awards, shares Value of shares issued as a result of the exercise of warrants. Stock Issued During Period Value, Exercise of Warrants Value of shares issued upon exercise of warrants Exercise of warrants Number of shares issued as a result of the exercise of warrants. Stock Issued During Period Shares Exercise of Warrants Exercise of warrants, shares Number of shares issued upon exercise of warrants Represents the effect on equity from the issuance of warrants. Equity Provision For Common Stock Warrants Provision for common stock warrants Amount of decrease in additional paid in capital (APIC) resulting from contributions to consolidated variable interest entity (VIE). Adjustments To Additional Paid In capital, Contributions To Consolidated Variable Interest Entity Additional paid-in capital due to contributions to consolidated VIE Stock Issued During Period, Value, Conversion of Convertible Securities Principal payment of convertible debenture settled in common stock Stock Issued During Period, Shares, Conversion of Convertible Securities Principal payment of convertible debenture settled in common stock, shares Noncontrolling Interest, Increase from Subsidiary Equity Issuance Contributions by non-controlling interest Condensed Consolidated Statements of Cash Flows Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Depreciation Depreciation of long-lived assets Amortization of Intangible Assets Amortization of intangible assets Inventory Write-down Lower of cost or net realizable value inventory adjustments and provision for excess and obsolete inventory Share-Based Payment Arrangement, Noncash Expense Stock-based compensation The gain or loss on extinguishment of debt presented in cash flows from operating activities. Gain (loss) on extinguishment of debt, operating activities (Gain)/loss on extinguishment of convertible debt instruments and finance obligations Accounts Receivable, Credit Loss Expense (Reversal) Provision for losses on accounts receivable Amortization of Debt Issuance Costs and Discounts Amortization of discount/(premium) of debt issuance costs on convertible debt instruments and long-term debt The expense recognized in the current period that reflects the write off of unamortized warrant cost. Amortization Of Warrant Cost Provision for common stock warrants Amount of loss (recovery) contracts related to service. (Benefit)/loss on service contracts Recovery on service contracts Changes during the period of fair value of warrant liability. Changes Fair Value of Warrant Liability Change in fair value of warrant liabilities Change fair value of warrant liability Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities that provide/(use) cash: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Contract with Customer, Asset Contract assets Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable, accrued expenses, and other liabilities The cash outflow associated with payments of contingent consideration during the period Payments Of Contingent Consideration Payments of contingent consideration Increase (Decrease) in Operating Lease Liability Payments of operating lease liability, net The increase (decrease) during the reporting period of a customer liability. Increase Decrease In Customer Liability Deferred revenue and other contract liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash used in operating activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Investing activities