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share) Derivative, Cap Price Per Share Derivative, Cap Price Per Share Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Options forfeited and cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Cancellations in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Cancellations in Period Total other comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Upfront payments received from customers Contract with Customer, Liability, Upfront Payments Received From Customers Contract with Customer, Liability, Upfront Payments Received From Customers Disposal Group Name [Axis] Disposal Group Name [Axis] Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Customer [Domain] Customer [Domain] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Percentage change in contract assets Increase (Decrease) in Contract with Customer, Asset, Percent Increase (Decrease) in Contract with Customer, Asset, Percent Net (loss) income per share attributable to common stockholders, basic (in dollars per share) Net (loss) income per share attributable to common stockholders, basic (in dollars per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Deferred revenue, current portion Contract with Customer, Liability, Current Risk-free interest rate Measurement Input, Risk Free Interest Rate [Member] Total current assets Assets, Current Insider Trading Arrangements [Line Items] Total cost of revenue Cost of Revenue Cost of Revenue Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net of allowances of $2,717 and $3,893 as of June 30, 2026 and December 31, 2025, respectively (VIE: $1,633 and $3,820 as of June 30, 2026 and December 31, 2025, respectively) Accounts receivable, net of allowances Account receivable Accounts Receivable, after Allowance for Credit Loss, Current Accumulated deficit Accumulated deficit Retained Earnings (Accumulated Deficit) 2030 Convertible Notes 2030 Convertible Notes [Member] 2030 Convertible Notes Product and Service [Axis] Product and Service [Axis] Threshold trading days Debt Instrument, Convertible, Threshold Trading Days Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Number of reporting units Goodwill, Reporting Unit, Number Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Proceeds from issuance of senior secured notes Proceeds from Issuance of Secured Debt Common Stock Common Stock [Member] Financing obligation, noncurrent Loans Payable, Noncurrent Disposal group, not discontinued operation, gain (loss) on disposal Disposal group, not discontinued operation, loss on disposal Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Less: Gain on extinguishment of debt, net of tax Extinguishment of Debt, Gain (Loss), Net of Tax Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] 2030 Private Placement Warrants Outstanding private placement warrants 2030 Private Placement Warrants [Member] 2030 Private Placement Warrants Rest of the world Non-US [Member] Contractual interest expense Interest Expense, Debt, Excluding Amortization Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Derivative Contract [Domain] Derivative Contract [Domain] Concentration risk, percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Schedule of Convertible Debt Convertible Debt [Table Text Block] Total liabilities and stockholders’ deficit Liabilities and Equity Warrant liability Derivative Liability, Noncurrent Stock options Outstanding stock options Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Non-controlling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Contract origination costs, net Increase (Decrease) In Capitalized Contract Costs Increase (Decrease) In Capitalized Contract Costs Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Other income, net Other Nonoperating Income (Expense) Financing obligation, current portion Loans Payable, Current Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Aggregate intrinsic value, options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value RSUs forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period General and administrative General and Administrative Expense Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] 2028 Convertible Notes 2028 Convertible Notes [Member] 2028 Convertible Notes Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, $0.0001 par value; 1,000,000 shares authorized as of June 30, 2026 and December 31, 2025; zero shares issued and outstanding as of June 30, 2026 and December 31, 2025 Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Class of warrant or right issued (in shares) Class of Warrant or Right, Issued Class of Warrant or Right, Issued Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Number of battery energy storage system projects held for sale Number of Battery Energy Storage System Projects Held For Sale Number of Battery Energy Storage System Projects Held For Sale Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Debt extinguishment amount Extinguishment of Debt, Amount Schedule of Common Stock Sold Under the ATM Program Schedule of Stock by Class [Table Text Block] Managed services Managed Services [Member] Managed Services Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total financial assets Assets, Fair Value Disclosure Accounts payable Accounts Payable Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Project assets Increase (Decrease) In Project Assets Increase (Decrease) In Project Assets Accounts payable (VIE: $157 and $440 as of June 30, 2026 and December 31, 2025, respectively) Accounts payable, current Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other Other Noncash Income (Expense) Contributions from non-controlling interests Noncontrolling Interest, Increase from Business Combination Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Aggregate purchase price Business Combination, Consideration Transferred Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Capital expenditures on internally-developed software Payments to Develop Software Name Trading Arrangement, Individual Name Remaining unrecognized stock-based compensation expense for RSUs Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents (VIE: $337 and $560 as of June 30, 2026 and December 31, 2025, respectively) Cash and cash equivalents Cash and Cash Equivalent Expected term (in years) Measurement Input, Expected Term [Member] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization expense Depreciation and amortization Depreciation, Depletion and Amortization Inventory Inventory, Gross Entity Address, Address Line Two Entity Address, Address Line Two Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net (loss) income Net (loss) income Net loss Net (loss) income attributable to common stockholders Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Warrant liability Derivative liability Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One RSUs vested, weighted average grant date fair value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Provision for income taxes Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Transfers into or out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net Customer Concentration Risk Customer Concentration Risk [Member] Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Common stock purchase agreement, amount authorized Common Stock Purchase Agreement, Amount Authorized, Value Common Stock Purchase Agreement, Amount Authorized, Value Debt instrument, debt discount, effective percentage Debt Instrument, Debt Discount, Effective Percentage Debt Instrument, Debt Discount, Effective Percentage Variable Interest Entity, Primary Beneficiary DevCo JVs Variable Interest Entity, Primary Beneficiary [Member] Net loss Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Number of shares called from each warrant (in shares) Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Debt conversion, converted instrument, amount Debt Conversion, Converted Instrument, Amount Schedule of Contract Assets and Liabilities from Contracts with Customers and Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Revenue Revenues [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]