0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - BUSINESS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - BUSINESS ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - ENERGY STORAGE SYSTEMS, NET link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - WARRANTS link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - NET (LOSS) INCOME PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - ENERGY STORAGE SYSTEMS, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - COMMON STOCK (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - NET (LOSS) INCOME PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Variable Interest Entities (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accounts Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Significant Customers (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - REVENUE - Schedule of Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - REVENUE - Remaining Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - REVENUE - Remaining Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - REVENUE - Schedule of Contract Assets and Liabilities from Contracts with Customers (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - REVENUE - Schedule of Changes in Contract Liabilities Balances (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Financial Instruments Measured at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurement Inputs and Valuation of Private Warrant Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Changes in Warrant Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Assets Measured at Fair Value on a Nonrecurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - BUSINESS ACQUISITIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET - Schedule of Intangible Assets, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - ENERGY STORAGE SYSTEMS, NET - Schedule of Energy Storage Systems, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - ENERGY STORAGE SYSTEMS, NET - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - DEBT - Schedule of Outstanding Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - DEBT - Schedule of Interest Expense Recognized Related to Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - WARRANTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - COMMON STOCK - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - COMMON STOCK - Schedule of Common Stock Sold Under the ATM Program (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - STOCK-BASED COMPENSATION - Schedule of RSU Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - NET (LOSS) INCOME PER SHARE - Schedule of Basic and Diluted Net (Loss) Income per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - NET (LOSS) INCOME PER SHARE - Schedule of Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - INCOME TAXES - Schedule of Provision for Income Taxes and the Effective Tax Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - SEGMENT INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - COMMITMENTS AND CONTINGNECIES (Details) link:presentationLink link:calculationLink link:definitionLink