RELATED PARTY TRANSACTIONS (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Related Party Transaction [Line Items] | |||||
| Revenue | $ 73,000 | $ 2,358,000 | $ 201,000 | $ 2,957,000 | |
| Deferred revenue, current | 280,000 | 280,000 | $ 359,000 | ||
| Accounts receivable, net | 10,000 | 10,000 | 13,000 | ||
| Related party | |||||
| Related Party Transaction [Line Items] | |||||
| Revenue | 69,000 | 2,302,000 | 75,000 | 2,330,000 | |
| Energy Warehouse Sales | Related party | |||||
| Related Party Transaction [Line Items] | |||||
| Revenue | 69,000 | 75,000 | |||
| Deferred revenue, current | 120,000 | 120,000 | 194,000 | ||
| Accounts receivable, net | 0 | ||||
| Energy Storage Systems Sales | Related party | |||||
| Related Party Transaction [Line Items] | |||||
| Revenue | $ 2,300,000 | $ 2,300,000 | |||
| Honeywell ACS Ventures LLC | Related party | |||||
| Related Party Transaction [Line Items] | |||||
| Prepayment of equipment | 5,300,000 | 5,300,000 | |||
| Deferred revenue, non-current - related parties | $ 600,000 | $ 600,000 | $ 600,000 | ||
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- Definition Proceeds From Prepayment Of Equipment No definition available.
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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