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Long-Term Debt - Schedule of Future Aggregate Principal Maturities of Long-Term Debt (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
2026	$ 50,000
Long-Term Debt, Total	$ 50,000

- 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.

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+ Details

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References + Details

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2024	Mar. 17, 2025	Jun. 28, 2024
Document and Entity Information
Document Type	10-K
Amendment Flag	false
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2024
Document Fiscal Year Focus	2024
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-40710
Entity Registrant Name	Tigo Energy, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-3583873
Entity Address, Address Line One	655 Campbell Technology Parkway
Entity Address, Address Line Two	Suite 150
Entity Address, City or Town	Campbell
Entity Address, State or Province	CA
Entity Central Index Key	0001855447
Entity Address, Postal Zip Code	95008
City Area Code	408
Local Phone Number	402-0802
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	TYGO
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Documents Incorporated by Reference [Text Block]	DOCUMENTS INCORPORATED BY REFERENCE The registrant intends to file a proxy statement pursuant to Regulation 14A within 120 days of the end of the fiscal year ended December 31, 2024. Portions of such proxy statement are incorporated by reference into Part III of this Annual Report on Form 10-K.
Auditor Opinion [Text Block]	Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Tigo Energy, Inc. and subsidiaries (collectively the “Company”) as of December 31, 2024, and 2023, the related consolidated statements of operations and comprehensive loss, convertible preferred stock and changes in stockholders’ equity (deficit), and cash flows for each of the two years in the period ended December 31, 2024, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for the year then ended, in conformity with accounting principles generally accepted in the United States of America.
Entity Common Stock, Shares Outstanding		61,912,439
Entity Public Float			$ 38.5
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	San Jose, California

Income Taxes - Schedule of Domestic and Foreign Components Of Income Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
United States	$ (60,757)	$ 567
Foreign	(1,886)	(1,413)
Loss before income tax expense	$ (62,643)	$ (846)

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

Merger with Roth CH Acquisition IV Co.	12 Months Ended
Merger with Roth CH Acquisition IV Co.	Dec. 31, 2024
Roth CH Acquisition IV Co.
Business Acquisition [Line Items]
Merger with Roth CH Acquisition IV Co.	3. Merger with Roth CH Acquisition IV Co. The Business Combination was accounted for as a reverse recapitalization in accordance with GAAP. Under this method of accounting, ROCG was treated as the “acquired” company and Legacy Tigo was considered the “acquirer” for financial reporting purposes. This determination was primarily based on Legacy Tigo stockholders comprising a majority of the voting power of the Company, Legacy Tigo’s senior management comprising substantially all of the senior management of the Company, Legacy Tigo’s relative size compared to ROCG, and Legacy Tigo’s operations prior to the acquisition comprising the only ongoing operations of the Company. Accordingly, for accounting purposes, the financial statements of the Company represent a continuation of the financial statements of Legacy Tigo with the Business Combination being treated as the equivalent of Legacy Tigo issuing stock for the net assets of ROCG, accompanied by a recapitalization. The net assets of ROCG are stated at historical costs, with no goodwill or other intangible assets recorded. Operations prior to the Business Combination are presented as those of Legacy Tigo. All periods prior to the Business Combination have been retrospectively adjusted using the exchange ratio established in the Business Combination of 0.233335 (the “Exchange Ratio”) to affect the reverse recapitalization. As part of the reverse recapitalization, Legacy Tigo acquired $2.2 million of cash, $0.6 million of prepaid expenses and insurance and assumed $3,400 of accrued expenses and $61,000 of income tax payable. The Company incurred $6.1 million in transaction costs relating to the Business Combination, which were charged directly to additional paid in capital to the extent of cash received. Transaction costs in excess of cash acquired of $3.9 million were charged to general and administrative expenses. Immediately prior to the closing of the Business Combination: • all shares of Legacy Tigo’s outstanding Series E, Series D, Series C-1, Series C, Series B-4, Series B-3, Series B-2, Series B-1, Series A-4, Series A-3, Series A-2, and Series A-1 convertible preferred stock were converted into an equivalent number of shares of Legacy Tigo common stock on a one-to-one basis and additional shares of Legacy Tigo common stock were issued to settle the accumulated dividend to the Series E and Series D convertible preferred stockholders of $12.6 million; • all common warrants net of exercise were converted into an equivalent number of shares of Legacy Tigo common stock on a one-to-one basis; and • all preferred warrants net of exercise were converted into an equivalent number of shares of Legacy Tigo preferred stock on a one-to-one basis, and subsequently converted into an equivalent number of shares of Legacy Tigo common stock on a one-to-one basis. At the effective time of the Business Combination, each share of Legacy Tigo common stock issued and outstanding immediately prior to the closing (including the shares of Legacy Tigo common stock issued in connection with the foregoing) were canceled and converted into the right to receive a pro rata portion of the merger consideration based on the Exchange Ratio. Immediately following the Business Combination, there were 58,144,543 shares of common stock issued and outstanding, options to purchase an aggregate of 4,358,301 shares of common stock and 5,768,750 warrants outstanding to purchase shares of common stock.

Stockholders' Equity

12 Months Ended

Dec. 31, 2024

Equity [Abstract]

Stockholders' Equity

11.

Stockholders’ Equity

Common Stock and Preferred Stock

The Company is authorized to issue 150,000,000 shares of common stock. Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders.

The Company is authorized to issue 10,000,000 shares of Preferred Stock. As of December 31, 2024, there was no Preferred Stock outstanding.

Common Stock Reserved for Future Issuance

Shares of common stock reserved for future issuance were as follows:


	As of December 31, 2024
Stock options issued and outstanding		5,403,090
Restricted stock units and performance stock units issued and outstanding		3,863,994
Shares available for potential conversion of L1 Convertible Note		5,305,861
Shares available for grant under 2023 Equity Incentive Plan		924,488
		15,497,433

At-The-Market Offering Program

In November 2024, we entered into an At-The-Market Offering Agreement (the “ATM Agreement”) with Craig-Hallum Capital Group LLC (the “Sales Agent”), allowing for the sale of common stock with an aggregate gross offering price of up to $14.2 million (the “2024 ATM Program”). Under the ATM Agreement, the Sales Agent may sell shares in an “at-the-market” offering under Rule 415(a)(4) of the Securities Act, including sales on Nasdaq or other trading markets, to or through market makers, directly to the Sales Agent as principal, or in negotiated transactions at prevailing market prices. The offering of Shares pursuant to the ATM Agreement will terminate upon (a) five business days’ advance notice from the Company to the Sales Agent or five business days’ advance notice from the Sales Agent to the Company or (b) otherwise by mutual agreement of the parties pursuant to the terms of the ATM Agreement. Sales under the 2024 ATM Program are subject to a maximum commission of up to 3.0% of the gross proceeds per share sold through the Sales Agent.

The following is a summary of the shares issued under our 2024 ATM Program during the year ended December 31, 2024 (in thousands except average price per share):


Period Ended	Shares Issued		Average Net Price Per Share(1)		Gross Proceeds		Net Proceeds
December 31, 2024		16,336	$	0.98	$	17	$	16

(1)

Represents the average price per share after commission.

Common Stock Warrants

Legacy Tigo had outstanding warrants to purchase 1,915,372 shares of Legacy Tigo common stock (“Legacy Warrants”), which (prior to the consummation of the Business Combination) represented rights to purchase Legacy Tigo common stock. During the year ended December 31, 2023, 1,915,372 Legacy Warrants were net exercised resulting in the issuance of 1,491,229 shares of common stock. As of December 31, 2023, there were no Legacy Warrants outstanding.

In connection with the Business Combination, the Company assumed 5,750,000 warrants originally issued as part of ROCG’s units in ROCG’s initial public offering (the “Public Warrants”) and 18,750 warrants issued to the initial stockholders of ROCG in a private placement in connection with ROCG’s initial public offering (the “Private Warrants” and, together with the Public Warrants, the “Warrants”), which, in each case, entitle the holder to purchase one share of common stock at an exercise price of $11.50 per share. Except with respect to certain registration rights and transfer restrictions, the Private Warrants are identical to the Public Warrants. The Company analyzed the Warrants and determined they are freestanding instruments and do not exhibit any of the characteristics in ASC 480, “Distinguishing Liabilities from Equity”, and therefore are not classified as liabilities.

Under the terms of the Warrant Agreement, the Company was entitled to redeem all of its outstanding Warrants for $0.01 per Warrant if the reported closing price of the Company’s common stock was at least $18.00 per share on each of twenty trading days within a thirty trading day period ending on the third trading day prior to the date on which a notice of redemption is given. This performance threshold was achieved following the market close on August 4, 2023.

On August 9, 2023, the Company announced the redemption of all of its outstanding Public Warrants and Private Warrants to purchase shares of common stock that were issued under the Warrant Agreement, dated as of August 5, 2021, by and among the Company and Continental Stock Transfer & Trust Company, as warrant agent, at a redemption price of $0.01 per Warrant for those Warrants that remain outstanding following 5:00 p.m. New York City time on September 8, 2023.

A total of 324,546 Warrants were exercised through September 8, 2023, resulting in proceeds, net of issuance costs, of $3.7 million. All other Warrants were redeemed on September 8, 2023.

The Company paid $0.1 million for the remaining Warrants that were not exercised as of September 8, 2023, which was recorded as a reduction to additional paid-in capital on the Company’s condensed consolidated balance sheet. As of December 31, 2023, there were no Warrants outstanding.

Convertible Preferred Stock

In connection with the Business Combination, as discussed in Note 3, the Company issued 47,918,992 shares of common stock to holders of convertible preferred stock of Legacy Tigo. No convertible preferred securities were outstanding as of December 31, 2023. Prior to the Business Combination, Legacy Tigo’s convertible preferred stock was classified outside of stockholders’ deficit because the shares contained deemed liquidation rights that were contingent redemption features not solely within the control of Legacy Tigo. As a result, all of Legacy Tigo’s convertible preferred stock was classified as mezzanine equity.

Convertible Preferred Stock Warrants

Warrants to purchase a total of 1,064,446 shares of Series C convertible preferred stock of Legacy Tigo were initially recognized as a liability and recorded at fair value upon issuance and were subject to remeasurement to fair value at each balance sheet date. As part of the Business Combination, Legacy Tigo convertible preferred stock was remeasured immediately before the Merger date, and was subsequently converted into Legacy Tigo common stock pursuant to the conversion rate in effect immediately prior to the consummation of the Business Combination and all related Legacy Tigo convertible preferred stock warrants were converted into warrants exercisable for shares of common stock with terms consistent with the Legacy Tigo convertible preferred stock warrants except for the number of shares exercisable and the exercise price, each of which was adjusted using the Exchange Ratio. In connection with the Business Combination, as discussed in Note 3, all outstanding Series C convertible preferred stock warrants were exercised resulting in the net issuance of 828,733 shares of convertible preferred stock which were immediately converted into common stock in connection with the recapitalization. As of December 31, 2023, there were no convertible preferred stock warrants outstanding.

- Definition

The entire disclosure for equity.

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+ Details

Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands		12 Months Ended
	Jan. 09, 2023 USD ($)	Dec. 31, 2024 USD ($) Customer	Dec. 31, 2023 USD ($) Customer
Significant Accounting Policies [Line Items]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]		srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description		The CODM assesses performance for the Company, monitors budget versus actual results and determines how to allocate resources based on consolidated net loss as reported in the consolidated statements of operations and comprehensive loss. There are no other expense categories regularly provided to the CODM that are not already included in the primary financial statements herein.
Inventory Charges		$ 23,500
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]		Leasehold Improvements [Member]
Cash received from promissory note purchase agreement	$ 50,000	$ 50,000
Total revenue percentage		1.00%	1.00%
Advertising expenses		$ 600	$ 800
Cash and cash equivalents		11,746	$ 4,405
Total net working capital		$ 36,300
Convertible promissory note, maturity date		Jan. 09, 2026
Annual Net Revenue \| Customer Concentration Risk \| One Customer
Significant Accounting Policies [Line Items]
Number of customers \| Customer		0	0
Maximum
Significant Accounting Policies [Line Items]
Lease term		12 months
Estimated Useful Life		7 years
Estimated useful life of intangible assets		10 years
Warranty period		25 years
Performed over the period of the monitoring service		20 years
Maximum \| Technology Service
Significant Accounting Policies [Line Items]
Performed over the period of the monitoring service		11 years
Minimum
Significant Accounting Policies [Line Items]
Estimated Useful Life		3 years
Estimated useful life of intangible assets		6 years
Warranty period		5 years
Performed over the period of the monitoring service		5 years

Long-Term Debt

12 Months Ended

Dec. 31, 2024

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt consisted of the following (in thousands):


	December 31, 2024			December 31, 2023
Convertible Promissory Note	$	50,000		$	50,000
Less: unamortized debt discount and issuance costs		(9,489	)		(18,430	)
Long-term debt, net of unamortized debt discount and issuance costs	$	40,511		$	31,570

Convertible Promissory Notes

On January 9, 2023, the Company entered into a convertible promissory note purchase agreement (“Note Purchase Agreement”) with L1 Energy Capital Management S.a.r.l in exchange for cash of $50.0 million (“Convertible Promissory Notes”). Outstanding borrowings under the Convertible Promissory Notes bear interest at a rate of 5.0% per year. The principal amount is due at the maturity date of January 9, 2026, and interest is payable semiannually beginning July 2023. As of December 31, 2024, there was $1.2 million of accrued interest in the consolidated balance sheet.

Under the terms of the Note Purchase Agreement, the Convertible Promissory Note may be converted at the option of the note holder into the Company’s common stock or an equivalent equity instrument resulting from a public company event. The conversion price is based on a pre-money valuation divided by the aggregate number of the Company’s outstanding shares at the issuance date and adjusted for any cash dividends paid on the Company’s capital stock. The conversion price and number of conversion shares are subject to standard anti-dilution adjustments. Upon a change of control event the note holder may (i) convert the Convertible Promissory Note immediately prior to the event into the Company’s common stock at a conversion price equal to the lesser of the Convertible Promissory Note’s original conversion price or the price per share of the Company’s common stock implied by the change of control event transaction agreement or (ii) require the redemption of the Convertible Promissory Note in cash, including the payment of a make-whole amount of all unpaid interest that would have otherwise been payable had the Convertible Promissory Note remained outstanding through the maturity date. The Company’s obligations under the Note Purchase Agreement may be accelerated, subject to customary grace and cure periods, upon the occurrence of an event of default. The Note Purchase Agreement defines events of default as the occurrence of any one of the following; 1) a default in payment of any part of principal or unpaid accrued interest on the Convertible Promissory Note when due and payable; 2) the Company issues a written statement that it is unable to pay its debts as they become due, or the Company files a voluntary petition for bankruptcy or insolvency proceeding, the Company, or its directors or majority stockholders take action looking to the dissolution or liquidation of the Company; 3) the involuntary bankruptcy of the Company defined as the commencement of any proceeding against the Company seeking any bankruptcy reorganization; 4) the Company defaults on any of its performance obligations under the Note Purchase Agreement; 5) any material portion of the assets of the Company or any subsidiary of the Company is seized or a levy is filed against such assets; 6) a default that remains uncured on any other agreement evidencing the indebtedness of the Company or its subsidiaries for an amount of $10 million or more whose terms allow for the acceleration of the repayment of such indebtedness due to the consummation of the transactions contemplated in this Note Purchase Agreement.

Please refer to Note 6, “Fair Value of Financial Instruments”, for further detail regarding the considerations surrounding the conversion options associated with the Convertible Promissory Note.

Future aggregate principal maturities of long-term debt are as follows as of December 31, 2024 (in thousands):


2025	$	—
2026		50,000
2027		—
2028		—
2029		—
Thereafter		—
	$	50,000

Series 2022-1 Notes

In January 2023, concurrently with the Convertible Promissory Note transaction, the Company repaid the Series 2022-1 Notes in full with the proceeds from the Convertible Promissory Note and wrote off $0.2 million of unamortized debt issuance costs related to the previously outstanding Series 2022-1 Notes, which are included in loss on debt extinguishment on the consolidated statements of operations and comprehensive loss.

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Domestic and Foreign Components of Income Before Income Taxes

The domestic and foreign components of income before income taxes consisted of the following (in thousands):


	Years Ended December 31
	2024			2023
United States	$	(60,757	)	$	567
Foreign		(1,886	)		(1,413	)
Income before income taxes	$	(62,643	)	$	(846	)

Schedule of Provision for Income Taxes

The provision for income taxes for the years presented is as follows (in thousands):


	Years Ended December 31
	2024			2023
Current taxes:
Federal	$	—		$	—
State		—			—
Foreign		284			159
Total current taxes	$	284		$	159
Deferred taxes:
Federal	$	—		$	—
State		—			—
Foreign		(181	)		(21	)
Total deferred taxes	$	(181	)	$	(21	)
Provision for income taxes	$	103		$	138

Schedule of Reconciliation of the Provision Computed at the Federal Statutory Rate to the Company's Provision (Benefit) for Income Taxes

The reconciliation of the provision computed at the federal statutory rate to the Company’s provision (benefit) for income taxes was as follows:


	Years Ended December 31
	2024			2023
Tax at federal statutory rate		21.0	%		21.0	%
State tax, net of federal benefit		0.9	%		22.9	%
Research and development tax credits		0.3	%		32.4	%
Global intangible low taxed income		(0.1	)%		(17.1	)%
Foreign rate differential		0.1	%		6.0	%
Transaction costs		—	%		(109.1	)%
Stock based compensation		(1.5	)%		(31.4	)%
Foreign tax and other		0.1	%		(17.4	)%
Deferred tax adjustments		—	%		316.2	%
Change in valuation allowance		(20.4	)%		(239.7	)%
Other		(0.6	)%		—	%
Total		(0.2	)%		(16.2	)%

Schedule of Deferred Tax Assets And Liabilities

A summary of significant components of the Company’s deferred tax assets and liabilities as of December 31, 2024, and 2023, is as follows:


	Years Ended December 31,
	2024			2023
Deferred tax assets:
Net operating loss carryforwards	$	22,996		$	19,968
Research and development tax credits		3,146			3,029
Stock based compensation		506			399
Capitalized research costs		3,352			2,491
Lease liability		339			545
Reserves and accruals		2,493			2,297
Uniform capitalization on inventory		1,942			259
Inventory reserve		5,251			217
Other		37			54
Total deferred tax assets		40,062			29,259
Less: valuation allowance		(36,880	)		(24,281	)
Total deferred tax assets, net of valuation allowance		3,182			4,978
Deferred tax liabilities:
Fixed assets and intangibles		(451	)		(447	)
Right of use leased assets		(332	)		(528	)
Debt discount		(2,201	)		(3,982	)
Total deferred tax liabilities		(2,984	)		(4,957	)
Net deferred tax assets	$	198		$	21

Schedule of Gross Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):


	Years Ended December 31,
	2024		2023
Balance at beginning of year	$	1,381	$	952
Gross increases to prior year tax positions		—		250
Gross increases to current year tax positions		108		179
Balance at end of year	$	1,489	$	1,381

Supplementary Balance Sheet and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2024

Inventory Disclosure [Abstract]

Selected Financial Data

Selected financial data as of the dates presented below is as follows (in thousands, except useful life data):


Inventory, net	December 31, 2024		December 31, 2023
Raw materials	$	662	$	668
Finished goods		21,335		60,733
Inventory, net	$	21,997	$	61,401

Summary of Property and Equipment, Net


Property and equipment, net	Estimated Useful Life	December 31, 2024		December 31, 2023
Machinery and equipment	7 years	$	6,051	$	5,810
Vehicles	5 years		31		31
Computer software	5 years		212		192
Computer equipment	5 years		602		574
Furniture and fixtures	5 years		216		216
Leasehold improvements	3 - 6 years		465		457
			7,577		7,280
Less: Accumulated depreciation			4,765		3,822
Property and equipment, net		$	2,812	$	3,458

Accrued Expenses and Other Current Liabilities


Accrued expenses and other current liabilities	December 31, 2024		December 31, 2023
Accrued vacation	$	924	$	856
Accrued compensation		1,119		2,514
Accrued interest		1,187		1,222
Accrued professional fees		894		409
Accrued warehouse and freight		917		1,001
Accrued other(1)		1,773		1,974
Other current liabilities(2)		547		705
Accrued expenses and other current liabilities	$	7,361	$	8,681

(1)

Accrued other as of December 31, 2024, and December 31, 2023, primarily consist of accrued expenses related to legal expense, insurance expense and sales discounts.

(2)

Other current liabilities for the period ended December 31, 2024, is primarily related to a note payable for insurance expense. The balance for the period ended December 31, 2023, is primarily related to the current portion of the contingent shares liability related to the acquisition of fSight in Q1 2023. See “Note 4” for additional information.

Schedule of Long-Lived Assets by Geographical Areas

The following table presents the Company’s long-lived assets, which consist of tangible property and equipment, net of depreciation, and operating ROU assets, by geographic region (in thousands):


Long-lived assets	December 31, 2024		December 31, 2023
EMEA(1)	$	1,545	$	1,770
Americas(2)		719		1,384
APAC(3)		2,124		2,807
Total long-lived assets	$	4,388	$	5,961

(1)

As of December 31, 2024, 26.6% of the Company’s total long-lived assets were located in Israel.

(2)

As of December 31, 2024, 16.4% of the Company's total long-lived assets were located in the U.S.

(3)

As of December 31, 2024, 35.5% and 13.0% of the Company's total long-lived assets were located in Thailand and China, respectively.

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expense

The Company recorded stock-based compensation expense in the following expense categories in its accompanying condensed consolidated statements of operations and comprehensive loss:


	Year Ended December 31,
(in thousands)	2024		2023
Cost of sales	$	141	$	125
Research and development		1,231		648
Sales and marketing		2,104		1,387
General and administrative		4,245		1,648
Total stock-based compensation(1)	$	7,721	$	3,808

(1)

A portion of the stock-based compensation in the table above pertains to Incentive Stock Options, which are nondeductible and the balance that is related to stock-based compensation is offset by valuation allowance. Therefore, we have excluded the income tax effect associated with the stock-based compensation in the calculation above.

Schedule of Stock Option Activity

The following table summarizes stock option activity for the Plans for the year ended December 31, 2024:


	Number of shares			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in 000’s)
Outstanding at December 31, 2023		4,872,527		$	3.64		6.10
Granted		2,786,951		$	1.49
Exercised		(789,097	)	$	0.34
Forfeited/expired		(1,467,291	)	$	8.31
Outstanding at December 31, 2024		5,403,090		$	1.74		7.18	$	581
Exercisable at December 31, 2024		2,630,187		$	1.63		4.83	$	568

Schedule of Fair Value of Each Stock Option Estimated Using Weighted Average Assumptions

The fair value of each stock option was estimated on the date of grant using the weighted-average assumptions in the table below:


	December 31, 2024			December 31, 2023
Expected volatility		72.4	%		68.1	%
Risk-free interest rate		3.5	%		4.1	%
Expected term (in years)		6.0			6.0
Expected dividend yield		—	%		—	%

Schedule of RSU Activity

The following table summarizes RSU activity for the 2023 Plan for the year ended December 31, 2024:


	Number of shares			Weighted average grant date fair value per share
Outstanding at December 31, 2023		872,037		$	11.27
Granted		2,557,692		$	1.40
Vested		(1,088,384	)	$	4.18
Forfeited/expired		(237,399	)	$	6.26
Outstanding at December 31, 2024		2,103,946		$	3.50

Schedule of PSU Activity

The following table summarizes the PSU activity for the 2023 Plan for the year ended December 31, 2024:


	Number of shares			Weighted average grant date fair value per share
Outstanding at December 31, 2023		—		$	—
Granted		1,940,602		$	1.58
Vested		—		$	—
Forfeited		(180,554	)	$	1.60
Outstanding at December 31, 2024		1,760,048		$	1.58

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2024

Accounting Policies [Abstract]

Liquidity and Going Concern

In accordance with ASU No. 2014-15, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern” (“Subtopic 205-40”), the Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the consolidated financial statements are issued.

As of December 31, 2024, the Company had cash and cash equivalents of $11.7 million and total net working capital, which we define as current assets less current liabilities, of $36.3 million. The Convertible Promissory Note (as defined in Note 9, “Long-Term Debt,” below), has an aggregate principal amount outstanding of $50.0 million as of December 31, 2024, and a maturity date of January 9, 2026. As of the date of this filing, the Company does not have sufficient cash, cash equivalents and marketable securities to repay this obligation. Management determined as a result of this evaluation, the Company’s current cash, net working capital position, and the upcoming maturity date of its Convertible Promissory Note, raises substantial doubt about the Company’s ability to continue as a going concern.

The Company’s plan is to continue exploring options for raising additional capital through a combination of equity financing to supplement the Company’s liquidity and/or refinancing of the Convertible Promissory Note. The Company's ability to raise capital may be constrained by the price of and demand for the Company’s common stock. Additional capital may not be available on favorable terms or at all, and could further dilute our current stockholders. Management cannot conclude as of the date of this filing that its plans are probable of being successfully implemented. There can be no assurance that the Company will be able to raise sufficient additional capital or obtain financing that will provide it with sufficient liquidity to satisfy its Convertible Promissory Note obligation in January 2026.

The consolidated financial statements have been prepared on a basis that assumes the Company will continue as a going concern which contemplates the realization of assets and satisfaction of liabilities and commitments in the ordinary course of business. Accordingly, the accompanying consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Emerging Growth Company Status

The Company is an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (JOBS Act). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act, until such time as those standards apply to private companies. The Company has elected to use this extended transition period for complying with new or revised accounting standards that have different effective dates for public and private companies until the earlier of the date that it (i) is no longer an emerging growth company or (ii) affirmatively and irrevocably opts out of the extended transition period provided in the JOBS Act. As a result, these financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates.

Use of Estimates

The preparation of the consolidated financial statements, in conformity with GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Key estimates in the consolidated financial statements include revenue recognition, fair value of investments, allowance for credit allowances, inventory valuation, impairment of long-lived assets, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, product warranty liabilities, incremental borrowing rate for right of use assets and lease liability, and

the valuation of the derivative liability, valuation allowance on deferred tax assets, assessment of probability of vesting of performance-based equity awards, preferred stock warrant liabilities and stock-based compensation, including the underlying fair value of the common stock. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ materially from those estimates due to risks and uncertainties.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist of cash, marketable securities and accounts receivable. The Company maintains deposits in federally insured financial institutions, which, at times, may exceed federally insured limits. The Company believes it is not exposed to significant credit risk beyond the normal credit risk associated with commercial banking relationships as the Company’s cash is deposited with major financial institutions in the U.S., Europe, the Middle East and Asia. The Company does not believe it is exposed to any significant credit risk due to the high credit quality of the financial instruments in which the money is held. At December 31, 2024, and 2023, the Company held insignificant cash in foreign bank accounts. To date, the Company has not experienced any losses on its deposits of cash.

During the years ended December 31, 2024, and 2023, there were no individual customers that exceeded 10% of the Company’s annual net revenue.

Segment Information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision maker (“CODM”), or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker (“CODM”) is the Chief Executive Officer (the “CEO”). The Company has one business activity — the design, development and sale of solar energy optimization solutions. There are no segment managers who are held accountable for operations, operating results or plans for levels or components below the consolidated unit level. Accordingly, management has determined that the Company has a single operating and reportable segment. The CODM assesses performance for the Company, monitors budget versus actual results and determines how to allocate resources based on consolidated net loss as reported in the consolidated statements of operations and comprehensive loss. There are no other expense categories regularly provided to the CODM that are not already included in the primary financial statements herein.

Fair Value of Financial Instruments

The Company uses a three-level hierarchy, which prioritizes, within the measurement of fair value, the use of market-based information over entity-specific information for fair value measurement based on the nature of inputs used in the valuation of an asset or liability as of the measurement date. Fair value focuses on an exit price and is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The inputs or methodology used to estimate the fair value of financial instruments are not necessarily an indication of the risk associated with those financial instruments. The three-level hierarchy for fair value measurement is defined as follows:

•

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

•

Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liabilities.

•

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

Management believes that the carrying amounts of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, accrued expenses and accounts payable approximate fair value due to the short-term nature of these instruments.

Cash and Cash Equivalents

The Company’s cash and cash equivalents include short-term highly-liquid investments with an original maturity of 90 days or less when purchased and are carried at fair value in the accompanying consolidated balance sheets. The Company considers all highly-liquid investments with a remaining maturity of three months or less at the date of purchase to be cash. Cash consists primarily of amounts in checking and savings accounts.

Marketable Securities

The Company’s marketable securities consist of investments in U.S. agency securities and corporate bonds that are classified as available-for-sale. The securities are carried at fair value with the unrealized gains and losses included in other comprehensive loss, a component of stockholders’ equity. Realized gains, losses, and declines in value determined to be other than temporary are included in the Company’s consolidated statements of operations and comprehensive loss. If any adjustment to fair value reflects a decline in the value of the investment that the Company considers to be “other than temporary,” the Company reduces the investment to fair value through a charge to the consolidated statements of operations and comprehensive loss. No such adjustments were necessary during the periods presented.

Accounts Receivable and Allowance for Credit Losses

Accounts receivable are recorded at the invoiced amount, do not bear interest, and are typically due 30 days from the invoice date. The Company generally does not require collateral from its customers and maintains an allowance for anticipated credit losses inherent in its accounts receivable portfolio. In establishing the required allowance, management considers historical bad debts, current customer receivable balances, age of customer receivable balances and the customers’ financial condition, all of which are subject to change. Additionally, the Company monitors activities and considers future reasonable and supportable forecasts of economic conditions to adjust all general and customer specific reserve percentages, as necessary. Balances recorded for estimated credit losses are written-off when they are determined to be uncollectible. The following table sets forth activities in the allowance for credit losses for the periods indicated:


	Year Ended December 31,
(in thousands)	2024			2023
Allowance for credit losses, beginning balance	$	4,011		$	76
Net charges to (recovery) or expense		(1,629	)		3,960
Write-offs, net of recoveries		(143	)		(25	)
Allowance for credit losses, ending balance	$	2,239		$	4,011

Inventory

In accordance with ASC Topic 330, “Inventory”, inventory is valued at the lower of cost or net realizable value (“NRV”) with cost determined under the first-in, first-out (“FIFO”) method. The determination of NRV involves numerous judgments, including estimated average selling prices based upon recent sales volumes, industry trends, existing customer orders, current contract price, future demand, pricing for the Company’s products and technological obsolescence of the Company’s products. Inventory that is obsolete, in excess of the Company’s forecasted demand or is anticipated to be sold at a loss is written down to its NRV based on expected demand and selling prices. The Company recorded inventory charges of $23.5 million in 2024 which is presented in costs of revenue within the consolidated statements of operations and comprehensive loss. Inventory charges were recorded to reflect anticipated net realizable value on disposition of existing inventory assets. This inventory charge is primarily related to excess and slow-moving inventory within the GO ESS line of energy storage solutions.

Property and equipment, net

Property and equipment is stated at cost, less accumulated depreciation. Cost includes amounts paid to acquire or construct the asset as well as any expenditure that substantially adds to the value of or significantly extends the useful life of an existing asset. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets, which ranges from 3 to 7 years. Leasehold improvements are amortized over the shorter of the lease term or expected useful life of the improvements.

Leases

The Company determines if an arrangement is or contains a lease at inception. Operating lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments over the lease term.

Operating lease assets and liabilities are recognized based on the present value of the remaining lease payments discounted using the Company’s incremental borrowing rate. Operating lease assets also include initial direct costs incurred and prepaid lease payments, minus any lease incentives. The Company’s lease terms include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense is recognized on a straight-line basis over the lease term.

The Company combines the lease and non-lease components in determining the operating lease assets and liabilities. The Company elected to not record right of use (“ROU”) assets or corresponding lease liabilities on the Company’s consolidated balance sheet for short term leases with an initial lease term of 12 months or less and purchase options the Company is not reasonably certain will be exercised.

Long-Lived Assets

The Company reviews its long-lived assets, which consist of property and equipment, net and operating lease right of use assets, for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets held and used is measured by comparison of the carrying amount of an asset to future net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported at the lower of their carrying cost amount or fair value less cost to sell. No impairment losses were identified for the years ended December 31, 2024, and 2023.

Goodwill and Intangible Assets

Goodwill represents the excess of the purchase price over the identifiable tangible and intangible assets acquired in addition to liabilities assumed arising from the acquisition of fSight in 2023. Initially the Company measures goodwill based upon the value of the consideration paid plus or minus net assets assumed. The goodwill arising from the Company’s acquisition is attributable to the value of the potential expanded market opportunity with new customers.

Intangible assets have either an identifiable or indefinite useful life. Intangible assets are recorded at cost or when acquired as part of a business combination at estimated fair value. Intangible assets with identifiable useful lives are amortized on a straight-line basis over their economic or legal life, whichever is shorter. The Company’s amortizable intangible assets consist primarily of patents, developed technology, and customer relationships. The useful life of these intangible assets ranges from 6 to 10 years. We evaluate the recoverability of finite-lived intangible assets for impairment whenever there are triggering events or circumstances that may indicate the carrying amount of such assets may not be recoverable.

Goodwill is not amortized but is subject to annual impairment testing in the fourth quarter unless circumstances dictate more frequent assessments. The Company will perform an annual impairment assessment for goodwill and more frequently whenever events or changes in circumstances indicate that the fair value of the asset may be less than the carrying amount.

Customer Deposits

Customer deposits consist of deposits received by the Company, as required on certain contracts and agreements, which are refundable at the termination of the contract. Customer deposits are recorded in deferred revenue, current portion within the consolidated balance sheet.

Product Warranties

The Company estimates the cost of its warranty obligations based on several key estimates: the warranty period (which can vary from 5 to 25 years depending on the product), its historical experience of known product failure rates,

costs of materials to repair or replace defective products and parts, and service delivery costs incurred in correcting product failures. In addition, from time to time, specific warranty accruals may be made if unforeseen technical problems arise. Should the actual experience relative to these factors differ from the estimates, the Company may be required to record additional warranty reserves. Product warranty costs are recorded as expense to cost of revenue based on customer history, historical information and current trends.

The following table summarizes the changes in product warranty liability:


	Year Ended December 31,
(in thousands)	2024			2023
Balance at the beginning of the period	$	5,632		$	4,351
Provision for warranty issued during period		1,284			2,153
Changes in estimate		(758	)		(451	)
Settlements		(360	)		(421	)
Balance at the end of the period	$	5,798		$	5,632

Convertible Promissory Note

On January 9, 2023, the Company entered into a convertible promissory note purchase agreement (the “Note Purchase Agreement”) with L1 Energy Capital Management S.a.r.l (“L1 Energy”) pursuant to which the Company issued a convertible promissory note in an aggregate principal amount of $50.0 million (the “Convertible Promissory Note”).

The Company analyzes its convertible debt instruments for embedded attributes that may require bifurcation from the host and accounted for as derivatives. At the inception of each instrument, in the event of a modification of a debt agreement, and at each reporting date, the Company performs an analysis of the embedded features requiring bifurcation and may elect, if eligible, to account for the entire debt instrument at fair value. If the fair value option were to be elected, any changes in fair value would be recognized in the accompanying statements of operations until the instrument is settled. Under the terms of the Note Purchase Agreement, the Convertible Promissory Note may be converted at the option of the noteholder into shares of common stock or an equivalent equity instrument resulting from a public company event. As a result of the Business Combination, the conversion options were bifurcated and accounted for as derivatives. The derivative instrument was recorded at fair value upon recognition and was subject to remeasurement to fair value at each balance sheet date, with any changes in estimated fair value recognized in the accompanying consolidated statements of operations and comprehensive income (loss).

On September 24, 2023, the Company and L1 Energy entered into an Amendment to Note Purchase Agreement and Convertible Promissory Note (the “Convertible Note Amendment”) which amended the conversion terms and, as a result of such amendment, the conversion options no longer met the requirements to be bifurcated in accordance with ASC Topic 815, “Derivatives and Hedging”. The carrying value of the convertible note derivative liability was remeasured to fair value immediately prior to the execution of the Convertible Note Amendment and the change in fair value was recorded to the Company’s consolidated statements of operations and comprehensive loss. The carrying value of the convertible note derivative liability was reclassified to equity and was recorded into additional paid-in capital on the Company’s consolidated balance sheet.

Please refer to Note 6 “Fair Value of Financial Instruments” for further details regarding the fair value of the derivative instrument. In addition, please refer Note 9 “Long-Term Debt” for additional details regarding the Convertible Promissory Note and derivative instrument.

Business Combinations

Other than the Merger, which was accounted for as a reverse recapitalization (see Note 3 for additional information), the Company accounts for business combinations under ASC Topic 805, “Business Combinations” using the acquisition method of accounting, and accordingly, the assets and liabilities of the acquired business are recorded at their fair values at the date of acquisition. The fair values assigned, defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between willing market participants, are based on estimates and assumptions determined by management. These valuations require the Company to make significant

estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired customer relationships and developed technology, royalty rates, and discount rates. The Company records the excess consideration over the aggregate fair value of tangible and intangible assets, net of liabilities assumed, as goodwill. All acquisition costs are expensed as incurred. Upon acquisition, the accounts and results of operations are included as of and subsequent to the acquisition date.

If the initial accounting for a business combination is incomplete by the end of a reporting period that falls within the measurement period, the Company reports provisional amounts in the consolidated financial statements. During the measurement period, the provisional amounts recognized at the acquisition date will be adjusted to reflect new information obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date and the Company records those adjustments in the consolidated financial statements.

Revenue Recognition

The Company complies with ASC Topic 606, “Revenue from Contracts with Customers” (“ASC Topic 606”) for revenue recognition. In accounting for contracts with customers:

The Company determines revenue recognition through the following steps:

•

Identification of the contract, or contracts, with a customer

•

Identification of the performance obligations in the contract

•

Determination of the transaction price

•

Allocation of the transaction price to the performance obligations in the contract

•

Recognition of revenue when, or as, the Company satisfies a performance obligation

Revenues are recognized when control of the promised goods or services are transferred to the Company’s customers in an amount that reflects the consideration that is expected to be received in exchange for those goods or services. The Company generates all of its revenue from contracts with its customers. A description of the principal activities from which the Company generates revenue are as follows:

•

Products Delivered at a Point in Time. The Company’s primary source of revenue is the sale of its hardware products. The Company’s hardware products are fully functional at the time of shipment and do not require modification or customization for customers to use the products. The Company sells its products primarily to distributors that resell the Company’s products to end users. Distributors do not have general rights of return and generally order goods for immediate resale to end customers. The Company uses present right to payment and transfer of title as indicators to determine the transfer of control to the customer. The Company recognizes revenue at a point in time when its performance obligation has been satisfied and control of the product is transferred to the customer, which generally aligns with shipping terms. Contract shipping terms include ExWorks (“EXW”), FOB Shipping Point and FOB Destination incoterms. Under EXW (meaning the seller fulfills its obligation to deliver when it makes goods available at its premises, or another specified location, for the buyer to collect), the performance obligation is satisfied and control is transferred at the point when the customer is notified that their order is available for pickup. Under FOB Shipping Point, control is transferred to the customer at the time the good is transferred to the shipper and under FOB Destination, at the time the customer receives the goods. We deduct sales returns to arrive at net revenue. Sales tax and other similar taxes are excluded from revenues. The Company has made the election to account for shipping and handling as activities to fulfill the promise to transfer the product and as such records amounts charged to customers for shipping and handling as revenue and the related costs are included in cost of revenues.

•

Services Delivered Over Time. Sales of the Company’s hardware products can include the Company’s free or premium web-based monitoring service. These monitoring services represent a single performance obligation and is deferred at the sale date. The free monitoring service revenue is recognized ratably over an estimated service period of 5 years as the service is performed. The premium monitoring service is

recognized ratably over the contracted service period, up to 20 years, as the service is performed. The full consideration of monitoring service revenue represented less than 1% of the total net revenue during the years ended December 31, 2024, and 2023. The allocation of revenue between the hardware and monitoring service deliverables is based on the Company’s best estimate of the standalone selling price determined by considering multiple factors, including internal costs, gross margin and historical selling practices. Additionally, the Company provides software as a service (“SaaS”) platform for our Predict+ technology. The Predict+ service revenue is recognized ratably over a contract service period up to 11 years, as the service is performed.

The Company typically incurs incremental costs to acquire customer contracts related to the Company’s hardware sales in the form of sales commissions; however, because the expected benefit from these contracts is one year or less, the Company follows the ASC Topic 606 practical expedient and expenses these amounts as incurred.

The Company records certain contra revenue promotions as variable consideration and recognizes these promotions at the time the related revenue is recorded.

Deferred revenue or contract liabilities consists of payments received from customers in advance of revenue recognition for the Company’s products and service. The current portion of deferred revenue represents the unearned revenue that will be earned within 12 months of the balance sheet date. Correspondingly, noncurrent deferred revenue represents the unearned revenue that will be earned after 12 months from the balance sheet date.

See Note 7 for additional information.

Cost of Revenue

The Company includes the following in cost of revenue: product costs, warranty costs, operation personnel and logistics costs, inventory reserve charges, shipping and handling costs, hosting service costs related to the monitoring service, depreciation and amortization of manufacturing test equipment, and employee-related expenses which primarily consists of employees’ salaries and health insurance expense.

Stock-Based Compensation

The Company measures the cost of employee and non-employee services received in exchange for stock-based awards based on the grant-date fair value of the award. The Company uses the Black-Scholes option pricing model to value its stock option awards. The fair value of restricted stock units (“RSU”) granted is determined based on the price of the Company’s common stock on the date of grant. The fair value of non-market‑based performance stock units (“PSUs”) granted is determined based on the market value of the Company’s common stock at the closing market price on the grant date, and the expense is recognized based on whether achievement of performance-based vesting conditions are probable. The Company recognizes compensation expense of its awards over the requisite service period, which is typically the vesting period, for the entire award using the straight-line attribution method. The Company accounts for forfeitures as they occur.

Estimating the fair value of options requires the input of subjective assumptions, including the estimated fair value of the Company’s common stock, the expected life of the options, stock price volatility, the risk-free interest rate and expected dividends. The assumptions used in the Company’s Black-Scholes option-pricing model represent management’s best estimates and involve a number of variables, uncertainties and assumptions and the application of management’s judgment, as they are inherently subjective.

Research and Development

Research and development expenses are comprised of costs to design, develop, test or significantly improve our solar energy hardware and software solutions and primarily include personnel costs and facility-related expenses.

Advertising Costs

All advertising costs are expensed as incurred and included in sales and marketing expenses. Advertising expenses incurred by the Company were $0.6 million and $0.8 million for the years ended December 31, 2024, and 2023, respectively.

Income Taxes

Income taxes are accounted for under the asset-and-liability method as required by ASC Topic 740, “Income Taxes” (“ASC Topic 740”). Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period corresponding to the enactment date. Under ASC Topic 740, a valuation allowance is required when it is more likely than not that all or some portion of the deferred tax assets will not be realized through generating sufficient future taxable income.

ASC Topic 740 defines the criterion an individual tax position must meet for any part of the benefit of the tax position to be recognized in financial statements prepared in conformity with GAAP. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not such tax position will be sustained on examination by the taxing authorities, based solely on the technical merits of the respective tax position. The tax benefits recognized in the consolidated financial statements from such a tax position should be measured based on the largest benefit having a greater than 50% likelihood of being realized upon ultimate settlement with the tax authority. In accordance with the disclosure requirements of ASC Topic 740, the Company’s policy on income statement classification of interest and penalties related to income tax obligations is to include such items as part of income tax expense.

The Tax Cuts and Jobs Act (“TCJA”) subjects a U.S. shareholder to tax on global intangible low-taxed income (“GILTI”) earned by certain foreign subsidiaries. Under GAAP, the Company can make an accounting policy election to either treat taxes due on the GILTI inclusion as a current period expense or factor such amounts into the Company’s measurement of deferred taxes. The Company elected to treat the GILTI inclusion as a period expense.

Comprehensive Loss

Comprehensive loss consists of two components, net loss and other comprehensive loss. Other comprehensive loss refers to gains and losses that are recorded as an element of stockholders’ equity but are excluded from net loss. The Company’s other comprehensive loss consists of the change in net unrealized loss on marketable securities.

Recently Adopted Accounting Pronouncements

In November 2023, the FASB issued ASU No. 2023-07, “Improvements to Reportable Segment Disclosures” (“Topic 280”). This ASU updates segment reporting disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (CODM) and included within each reported measure of a segment’s profit or loss. This ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources. The ASU is effective for annual periods beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company adopted ASU 2023-07 effective for its Annual Report on Form 10-K for the year ended December 31, 2024, and subsequent interim periods. The adoption of ASU 2023-07 did not have a significant impact on our consolidated financial statements.

Recently issued accounting pronouncements not yet adopted

In December 2023, the FASB issued ASU No. 2023-09, “Improvements to Income Tax Disclosures” (“Topic 740”). This ASU requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as additional information on income taxes paid. The ASU is effective on a prospective basis for annual periods beginning after December 15, 2024, although retrospective application is permitted. Early adoption is also permitted for annual financial statements that have not yet been issued or made available for issuance. The Company is currently evaluating the impact adoption that this ASU will have on the Company’s income tax-related disclosures.

In November 2024, the FASB issued ASU 2024-03, “Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures (“Subtopic 220-40”): Disaggregation of Income (loss) Statement Expenses” (“ASU 2024-03”). ASU 2024-03 requires disaggregation of certain costs and expenses included in each relevant expense caption on the Company’s consolidated income (loss) statements in a separate note to the financial statements at each interim and annual reporting period, including amounts of purchases of inventory, employee compensation, depreciation, and intangible asset amortization. ASU 2024-04 is effective fiscal years beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU 2024-03.

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2024

Equity [Abstract]

Schedule of Shares of Common Stock Reserved for Future Issuance

Shares of common stock reserved for future issuance were as follows:


	As of December 31, 2024
Stock options issued and outstanding		5,403,090
Restricted stock units and performance stock units issued and outstanding		3,863,994
Shares available for potential conversion of L1 Convertible Note		5,305,861
Shares available for grant under 2023 Equity Incentive Plan		924,488
		15,497,433

Summary of Shares Issued

The following is a summary of the shares issued under our 2024 ATM Program during the year ended December 31, 2024 (in thousands except average price per share):


Period Ended	Shares Issued		Average Net Price Per Share(1)		Gross Proceeds		Net Proceeds
December 31, 2024		16,336	$	0.98	$	17	$	16

Net Loss Per Share - Summary of Potentially Dilutive Securities Excluded from Computation of Diluted Weighted-Average Shares of Common Stock Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Outstanding stock options and restricted stock units	4,673,638	3,470,172
Convertible preferred stock warrants		580,729
Common stock warrants		75,305
Convertible promissory note	5,305,861
Total	9,979,499	4,126,206

Fair Value of Financial Instruments - Summary of the changes in fair value of the Company's Level 3 financial instruments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
fSight
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value at inception	$ 2,167
Transfer out of level 3	$ (2,196)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Fair Value Adjustment of Warrants
Change in fair value	$ 29
Derivative Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value at inception	23,525
Transfer out of level 3	$ (11,278)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Fair Value Adjustment of Warrants
Change in fair value	$ (12,247)

Acquisition of Foresight Energy, Ltd. (Tables) - fSight [Member]

12 Months Ended

Dec. 31, 2024

Business Acquisition [Line Items]

Summary of Provisional Fair Values of Identifiable Assets Acquired and Liabilities Assumed

The following table summarizes the provisional fair values of the identifiable assets acquired and liabilities assumed at the date of the acquisition:


(in thousands)
Consideration transferred(1):
Fair value of common stock issued	$	10,974
Fair value of contingent shares		2,167
Deemed settlement of loan payable		527
Total consideration	$	13,668

Assets Acquired
Cash and cash equivalents	$	55
Accounts receivable		117
Property and equipment		9
Developed technology		1,820
Customer relationships		170
Goodwill		12,209
Total assets acquired	$	14,380
Liabilities Assumed
Accounts payable	$	418
Accrued expenses		294
Net assets acquired	$	13,668

(1)

The reported provisional amounts presented above have been updated from the Company’s S-1 filed with the SEC on June 22, 2023. The Company recorded an out of period adjustment related to the adjustment of the provisional fair market value of the Legacy Tigo common stock that was used to develop the calculation of the purchase price consideration. The Company does not believe that the adjustment had a material impact on its consolidated statements of operations and comprehensive loss, consolidated balance sheets, or consolidated statements of cash flows in any periods previously reported.

Summary of Supplemental Pro Forma Information

The following table presents supplemental pro-forma information for the year ended December 31, 2023, as if the merger with fSight had occurred on January 1, 2023. These amounts have been calculated after applying the Company’s accounting policies and are based upon currently available information.


(in thousands)	December 31, 2023
Net revenue	$	145,301
Net loss	$	(1,130	)

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

14.

Goodwill and Intangible Assets

As of December 31, 2024, the Company had a goodwill balance of $12.2 million. The goodwill balance is related to the acquisition of fSight. Please see Note 4, “Acquisition of Foresight Energy, Ltd.” for additional information. As of December 31, 2024, there has been no impairment of goodwill to date.

The Company’s intangible assets by major asset class are as follows:


	December 31, 2024
(in thousands, except for useful life amounts)	Weighted Average Useful Life (Years)	Gross		Accumulated Amortization			Net Book Value
Amortizing:
Patents	6.7	$	450	$	(137	)	$	313
Customer relationships	10.0		170		(33	)		137
Developed technology	10.0		1,820		(348	)		1,472
Total intangible assets		$	2,440	$	(518	)	$	1,922


	December 31, 2023
(in thousands, except for useful life amounts)	Weighted Average Useful Life (Years)	Gross		Accumulated Amortization			Net Book Value
Amortizing:
Patents	6.7	$	450	$	(65	)	$	385
Customer relationships	10.0		170		(16	)		154
Developed technology	10.0		1,820		(167	)		1,653
Total intangible assets		$	2,440	$	(248	)	$	2,192

The Company recognized amortization expense related to intangible assets of $0.3 million and $0.2 million for the years ended December 31, 2024, and 2023, respectively.

Amortization expense related to intangible assets at December 31, 2024, in each of the next five years and beyond is expected to be incurred as follows (in thousands):


(in thousands)	Amount
2025	$	270
2026		270
2027		262
2028		260
2029		227
Thereafter		633
	$	1,922

Supplementary Balance Sheet and Geographic Information - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands

Dec. 31, 2024

Dec. 31, 2023

Accrued Liabilities and Other Liabilities [Abstract]

Accrued vacation

$ 924

$ 856

Accrued compensation

1,119

2,514

Accrued interest

1,187

1,222

Accrued professional fees

894

409

Accrued warehouse and freight

917

1,001

Accrued other

^[1]

1,773

1,974

Other current liabilities

^[2]

547

705

Accrued expenses and other current liabilities

$ 7,361

$ 8,681

[1]	Accrued other as of December 31, 2024, and December 31, 2023, primarily consist of accrued expenses related to legal expense, insurance expense and sales discounts.
[2]	Other current liabilities for the period ended December 31, 2024, is primarily related to a note payable for insurance expense. The balance for the period ended December 31, 2023, is primarily related to the current portion of the contingent shares liability related to the acquisition of fSight in Q1 2023. See “Note 4” for additional information.

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Jan. 25, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Accounts receivable, net for allowance of credit losses (in Dollars)	$ 2,239	$ 4,011		$ 76
Convertible preferred stock shares, authorized	10,000,000
Convertible preferred stock shares, outstanding	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	150,000,000	150,000,000
Common stock issued (in Shares)	60,800,130	58,751,666	5,598,751
Common stock, outstanding	60,800,130	58,751,666

Goodwill and Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Goodwill balance	$ 12,200,000
Impairment of goodwill	0
Intangible assets	1,922,000	$ 2,192,000
Amortization of intangible assets	$ 300,000	$ 200,000

- 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.

+ References + Details

Net Loss Per Share

12 Months Ended

Dec. 31, 2024

Earnings Per Share [Abstract]

Net Loss Per Share

Basic net loss per share of common stock is computed by dividing net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during each period, without consideration for potential dilutive shares of common stock. Diluted net loss per share of common stock is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common share equivalents outstanding for the period determined using the treasury-stock method and if-converted method, as applicable.

For the year ended December 31, 2024, the Company reported a net loss. The diluted net loss per share calculation is the same as basic net loss per share since dilutive shares are not assumed to have been issued if their effect is antidilutive. Therefore, the weighted-average shares used to calculate both basic and diluted net loss per share are the same.

For the year ended December 31, 2023, basic and diluted net loss per share attributable to common stockholders is presented in conformity with the two-class method required for participating securities, which include convertible preferred stock. Under the two-class method, net loss is adjusted by the difference between the fair value of consideration transferred and the carrying amount of convertible preferred stock during periods where the Company redeems its convertible preferred stock. The remaining earnings (undistributed earnings) are allocated to common stock and each series of convertible preferred stock to the extent that each preferred security may share in earnings as if all of the earnings for the period had been distributed. The total earnings allocated to common stock is then divided by the number of outstanding shares to which the earnings are allocated to determine the earnings per share. The two-class method is not applicable during periods with a net loss, as the holders of the convertible preferred stock have no obligation to fund losses.

For the year ended December 31, 2023, the Company reported a net loss. In accordance with ASC Topic 260, “Earning Per Share”, the difference between our basic and diluted loss per share calculations is due to the application of the if-converted method for the Company’s convertible debt. In the diluted loss per share calculation, the numerator is adjusted by adding back interest expense and changes in fair value of derivative liability, reflecting the assumed conversion of the convertible debt into common stock. The denominator includes the dilutive effect of the shares that the Company would issue under the convertible notes if-converted.

The following table sets forth the computation of basic and diluted net loss per share to common stockholders:


	Year Ended December 31,
(in thousands, except share and per share data)	2024			2023
Basic net loss per common share calculation:
Net loss attributable to common stockholders	$	(62,746	)	$	(4,383	)
Undistributed loss to preferred stock stockholders		—			1,418
Net loss attributable to common stockholders – basic	$	(62,746	)	$	(2,965	)
Weighted-average shares of common stock outstanding – basic		60,263,190			38,048,516
Net loss per share of common stock – basic	$	(1.04	)	$	(0.08	)

Diluted net loss per common share calculation:
Net loss attributable to common stockholders	$	(62,746	)	$	(4,383	)
Reverse: interest expense and change in fair value on derivative liability		—			(4,322	)
Net loss attributable to common stockholders		(62,746	)		(8,705	)
Undistributed loss to preferred stock stockholders		—			2,817
Net loss attributable to common stockholders – diluted	$	(62,746	)	$	(5,888	)
Weighted-average shares of common stock outstanding – basic		60,263,190			38,048,516
Convertible promissory note		—			5,174,618
Weighted-average shares of common stock – diluted		60,263,190			43,223,134
Net loss per share of common stock – diluted	$	(1.04	)	$	(0.14	)

The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive:


	As of December 31,
	2024		2023
Outstanding stock options and restricted stock units		4,673,638		3,470,172
Convertible preferred stock warrants		—		580,729
Common stock warrants		—		75,305
Convertible promissory note		5,305,861		—
		9,979,499		4,126,206

Stockholders' Equity - Additional Information (Details) - USD ($)			1 Months Ended		12 Months Ended
	Sep. 08, 2023	May 23, 2023	Nov. 30, 2024	Sep. 08, 2023	Dec. 31, 2024	Dec. 31, 2023	Aug. 09, 2023	May 24, 2023	Jan. 25, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Common stock issued (in Shares)					60,800,130	58,751,666			5,598,751
Common stock, outstanding					60,800,130	58,751,666
Common stock, par value					$ 0.0001	$ 0.0001
Common stock voting right					Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders.
Common stock, authorized					150,000,000	150,000,000
Preferred stock, authorized					10,000,000
Preferred stock, outstanding					0
Number of warrants outstanding						0
Convertible preferred stock, shares outstanding						0
Business acquisition shares exchange ratio						23.3335%
Warrant Agreement
Class of Stock [Line Items]
Warrants exercised				324,546
Payments for remaining warrants	$ 100,000			$ 3,700,000
Redemption price per share							$ 0.01
Common stock price per share							$ 18
ATM Agreement \| Maximum
Class of Stock [Line Items]
Aggregate gross offering price			$ 14,200,000
Maximum commission percentage of gross proceeds per share sold through sales agent			3.00%
Convertible Preferred Stock
Class of Stock [Line Items]
Warrants to purchase shares		828,733
Legacy Warrants
Class of Stock [Line Items]
Number of warrants outstanding						0				1,915,372
Warrants exercised						1,915,372
Issuance of common stock from exercise of warrants						1,491,229
Public Warrants
Class of Stock [Line Items]
Number of warrants outstanding		5,750,000
Warrants to purchase shares		1
Exercise price		$ 11.5
Public Warrants \| Private Placement
Class of Stock [Line Items]
Number of warrants outstanding		18,750
Private Warrants
Class of Stock [Line Items]
Warrants to purchase shares		1
Exercise price		$ 11.5
Series C Convertible Preferred Stock of Legacy Tigo
Class of Stock [Line Items]
Warrants to purchase shares		1,064,446
Convertible Preferred Stock Warrants
Class of Stock [Line Items]
Number of warrants outstanding						0
Legacy Tigo Energy
Class of Stock [Line Items]
Shares of Common Stock issued to holders of convertible preferred stock		$ 47,918,992
Roth CH Acquisition IV Co.
Class of Stock [Line Items]
Common stock issued (in Shares)								58,144,543
Common stock, outstanding								58,144,543
Number of warrants outstanding								5,768,750
Business acquisition shares exchange ratio		0.23334%

Income Taxes

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

15.

Income Taxes

The domestic and foreign components of income before income taxes consisted of the following (in thousands):


	Years Ended December 31
	2024			2023
United States	$	(60,757	)	$	567
Foreign		(1,886	)		(1,413	)
Income before income taxes	$	(62,643	)	$	(846	)

The provision for income taxes for the years presented is as follows (in thousands):


	Years Ended December 31
	2024			2023
Current taxes:
Federal	$	—		$	—
State		—			—
Foreign		284			159
Total current taxes	$	284		$	159
Deferred taxes:
Federal	$	—		$	—
State		—			—
Foreign		(181	)		(21	)
Total deferred taxes	$	(181	)	$	(21	)
Provision for income taxes	$	103		$	138

The reconciliation of the provision computed at the federal statutory rate to the Company’s provision (benefit) for income taxes was as follows:


	Years Ended December 31
	2024			2023
Tax at federal statutory rate		21.0	%		21.0	%
State tax, net of federal benefit		0.9	%		22.9	%
Research and development tax credits		0.3	%		32.4	%
Global intangible low taxed income		(0.1	)%		(17.1	)%
Foreign rate differential		0.1	%		6.0	%
Transaction costs		—	%		(109.1	)%
Stock based compensation		(1.5	)%		(31.4	)%
Foreign tax and other		0.1	%		(17.4	)%
Deferred tax adjustments		—	%		316.2	%
Change in valuation allowance		(20.4	)%		(239.7	)%
Other		(0.6	)%		—	%
Total		(0.2	)%		(16.2	)%

During the years ended December 31, 2024, and 2023, the Company recorded total income tax expense of $0.1 million and $0.1 million, respectively, primarily related to foreign earnings.

A summary of significant components of the Company’s deferred tax assets and liabilities as of December 31, 2024, and 2023, is as follows:


	Years Ended December 31,
	2024			2023
Deferred tax assets:
Net operating loss carryforwards	$	22,996		$	19,968
Research and development tax credits		3,146			3,029
Stock based compensation		506			399
Capitalized research costs		3,352			2,491
Lease liability		339			545
Reserves and accruals		2,493			2,297
Uniform capitalization on inventory		1,942			259
Inventory reserve		5,251			217
Other		37			54
Total deferred tax assets		40,062			29,259
Less: valuation allowance		(36,880	)		(24,281	)
Total deferred tax assets, net of valuation allowance		3,182			4,978
Deferred tax liabilities:
Fixed assets and intangibles		(451	)		(447	)
Right of use leased assets		(332	)		(528	)
Debt discount		(2,201	)		(3,982	)
Total deferred tax liabilities		(2,984	)		(4,957	)
Net deferred tax assets	$	198		$	21

The Company assesses the realizability of deferred tax assets based on the available evidence, including a history of taxable income and estimates of future taxable income. In assessing the realizability of deferred tax assets, the Company considers whether it is more likely than not that all or some portion of deferred tax assets will not be realized. Due to the history of losses incurred by the Company, management believes it is not more likely than not that substantially all of the U.S. federal, state and certain foreign deferred tax assets can be realized. Accordingly, the Company established and recorded a full valuation allowance on its U.S. domestic and certain foreign net deferred tax assets of $36.9 million and $24.3 million as of December 31, 2024, and 2023, respectively. The valuation allowance increased by $12.6 million during the year ended December 31, 2024, and increased by $1.7 million during the year ended December 31, 2023.

No deferred tax liabilities have been recorded relating to the earnings of the Company’s foreign subsidiaries since all such earnings are intended to be indefinitely reinvested. The amount of the unrecognized deferred tax liability associated with these earnings is immaterial.

Utilization of the net operating loss and tax credit carryforwards is subject to a substantial annual limitation due to the “ownership change” limitations provided by Sections 382 and 383 of the Internal Revenue Code of 1986, as amended (“IRC”) and other similar state provisions. Any annual limitation may result in the expiration of net operating loss and tax credit carryforwards before utilization. As of December 31, 2024, the Company had $73.6 million of U.S. federal net operating loss carryforwards available to reduce future taxable income, of which $38.8 million will be carried forward indefinitely for U.S. federal tax purposes and $34.8 million will expire beginning in 2028. The Company also has $56.8 million of U.S. state net operating loss carryforwards that will expire beginning in 2028. The Company also has $15.4 million of foreign net operating loss carryforwards that do not expire.

The Company also has federal and state research and development (“R&D”) and other tax credit carryforwards of $2.5 million and $2.5 million, respectively, as of December 31, 2024. The federal credit carryforwards will begin expiring in 2033 and state research credit carryforwards do not expire.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):


	Years Ended December 31,
	2024		2023
Balance at beginning of year	$	1,381	$	952
Gross increases to prior year tax positions		—		250
Gross increases to current year tax positions		108		179
Balance at end of year	$	1,489	$	1,381

At December 31, 2024, and 2023, the balance of gross unrecognized tax benefits was $1.5 million and $1.4 million, respectively. For each of the years ended December 31, 2024, and 2023, the balance of gross unrecognized tax benefits increased $0.1 million and $0.4 million, respectively, related to research and development income tax credits claimed. None of the Company’s unrecognized tax benefits would, if recognized, reduce the Company’s effective tax rate since the tax benefits would increase a deferred tax asset that is currently offset by a full valuation allowance. The Company does not anticipate a significant change to the total amount of unrecognized tax benefits within the next twelve months.

The Company files income tax returns in the U.S. federal, California and other various state and international jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. Carryover attributes beginning in 2008 remain open to adjustment by the U.S. and state authorities. There are no tax examinations in any material tax jurisdictions.

The Company recognizes any interest and/or penalties related to income tax matters as a component of income tax expense. As of December 31, 2024, there were no accrued interest and penalties related to uncertain tax positions.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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+ Details

Acquisition of Foresight Energy, Ltd. - Summary of Provisional Fair Values of Identifiable Assets Acquired and Liabilities Assumed (Details)
$ in Thousands

Jan. 25, 2023

USD ($)

Developed Technology

Assets Acquired

Assets acquired

$ 1,800

Customer Relationships

Assets Acquired

Assets acquired

200

fSight

Consideration transferred:

Fair value of common stock issued

10,974

^[1]

Fair value of contingent shares

2,167

^[1]

Deemed settlement of loan payable

527

^[1]

Total consideration

13,668

^[1]

Assets Acquired

Cash and cash equivalents

Accounts receivable

117

Property and equipment

Goodwill

12,209

Total assets acquired

14,380

Liabilities Assumed

Accounts payable

418

Accrued expenses

294

Net assets acquired

13,668

fSight | Developed Technology

Assets Acquired

Assets acquired

1,820

fSight | Customer Relationships

Assets Acquired

Assets acquired

$ 170

[1]

Consolidated Statements of Convertible Preferred Stock and Changes In Stockholders' Equity (Deficit) (Parenthetical)	12 Months Ended
	Dec. 31, 2023
Business acquisition shares exchange ratio	23.3335%

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value Measurements

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis:


	Fair value measurement at reporting date using
(in thousands)	(Level 1)		(Level 2)		(Level 3)
December 31, 2024
Assets:
Cash equivalents:
Money market accounts	$	6,839	$	—	$	—
U.S. agency securities	$	—	$	499	$	—
Marketable securities:
Corporate bonds	$	—	$	2,018	$	—
U.S. agency securities	$	—	$	6,138	$	—
December 31, 2023
Assets:
Cash equivalents:
Money market accounts	$	1,646	$	—	$	—
Marketable securities:
Corporate bonds	$	—	$	19,489	$	—
U.S. agency securities	$	—	$	9,294	$	—
Liabilities:
Contingent shares liability from fSight acquisition	$	527	$	—	$	—

The following is a summary of the changes in fair value of the Company’s marketable securities as of December 31, 2024, and 2023, respectively:


	As of December 31, 2024
(in thousands)	Amortized cost		Unrealized gain		Unrealized loss			Fair value
Available-for-sale marketable securities:
Current assets
Corporate bonds	$	2,019	$	—	$	(1	)	$	2,018
U.S. agency securities		6,135		3	$	—			6,138
Total available-for-sale marketable securities	$	8,154	$	3	$	(1	)	$	8,156

As of December 31, 2024, all available-for-sale marketable securities consisted of investments that mature within one year.


	As of December 31, 2023
(in thousands)	Amortized cost		Unrealized gain		Unrealized loss			Fair value
Available-for-sale marketable securities:
Current assets
Corporate bonds	$	17,561	$	2	$	(52	)	$	17,511
U.S. agency securities		9,300		2	$	(7	)		9,295
Total		26,861		4		(59	)		26,806
Long-term assets
Corporate bonds		1,981		3		(7	)		1,977
Total		1,981		3		(7	)		1,977

Total available-for-sale marketable securities	$	28,842	$	7	$	(66	)	$	28,783

The fair value of the preferred stock warrants was calculated using the Black-Scholes option pricing model and was revalued to fair value at the end of each reporting period until the earlier of the exercise or expiration of the preferred stock warrants. As a part of the Business Combination, Legacy Tigo preferred stock warrants were converted into the Legacy Tigo common stock at the conversion rate in effect immediately prior to the consummation of the Business Combination. Please see Note 3, “Merger with Roth CH Acquisition IV Co.” for additional information. The fair value of the warrant liabilities was estimated using the Black-Scholes option pricing model using the following assumptions:


	May 23, 2023 (Merger Date)
Expected volatility	68% - 70%
Risk-free interest rate	4.10% - 4.28%
Expected term (in years)	2.0 - 2.6
Expected dividend yield		—
Fair value of Series C convertible preferred stock	$	1.89

The table presented below is a summary of the changes in fair value of the Company’s preferred stock warrant liability which was exercised immediately prior to the Business Combination into Legacy Tigo preferred stock and subsequently converted into Legacy Tigo common stock. Upon the consummation of the Business Combination, such shares of Legacy Tigo common stock were converted to shares of common stock. Please see Note 3, “Merger with ROTH CH Acquisition IV Co.” for additional information.


(in thousands)	Fair value of preferred stock warrant liability
Balance at December 31, 2022		1,507
Change in fair value		501
Exercise of warrants		(2,008	)
Balance at December 31, 2023	$	—

The table presented below is a summary of the changes in fair value of the Company’s Level 3 financial instruments. The contingent shares from the fSight Acquisition (Note 4) were initially classified as a Level 3 measurement and upon the Merger were transferred out of Level 3 into Level 1, as they were valued on the observable stock price of the Company. In addition, the Company bifurcated the conversion options associated with the convertible promissory notes and separately account for them as a derivative liability. On September 24, 2023, the Company and L1 Energy entered into the Convertible Note Amendment. As a result of the Convertible Note Amendment, the conversion options no longer meet the requirements to be bifurcated into a convertible note derivative liability in accordance with ASC 815, “Derivatives and Hedging”. The carrying value of the convertible note derivative liability was remeasured to fair value immediately prior to the execution of the Convertible Note Amendment and was reclassified to equity. The reclassification was recorded in additional paid-in capital on the

Company’s consolidated balance sheet. Please refer to Note 9 “Long-Term Debt” for additional details regarding the derivative instrument.


(in thousands)	Fair value of contingent shares from fSight acquisition			Fair value of derivative liability
Balance at December 31, 2022	$	—		$	—
Fair value at inception		2,167			23,525
Change in fair value		29			(12,247	)
Transfer out of level 3		(2,196	)		(11,278	)
Balance at December 31, 2023	$	—		$	—

The fair value of the convertible note derivative liability was estimated using the Black-Scholes option pricing model using the following assumptions:


	As of September 24, 2023 (1)
Expected volatility		58.6	%
Risk-free interest rate		4.9	%
Expected term (in years)		2.3
Expected dividend yield		—

(1)

The fair value of the convertible note derivative liability was remeasured on September 24, 2023, immediately prior to the execution of the Convertible Note Amendment.

During the year ended December 31, 2024, there were no transfers between Level 1, Level 2 and Level 3.

Fair Value of Financial Instruments

The carrying amounts of cash and cash equivalents, restricted cash, marketable securities, accounts receivable, accounts payable, and customer deposits approximate fair value due to their short-term nature. As of December 31, 2024, the fair value and carrying value of the Company’s Convertible Promissory Note (Note 9) was $44.0 million and $40.5 million, respectively. The estimated fair value for the Company’s Convertible Promissory Note was based on discounted expected future cash flows using prevailing interest rates which are Level 3 inputs under the fair value hierarchy.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Subsequent Events - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Jul. 25, 2024	Jan. 25, 2024	Dec. 31, 2023	Jan. 25, 2023	Dec. 31, 2022
Subsequent Event [Line Items]
Common stock, shares issued	60,800,130			58,751,666	5,598,751
Fair value				$ 0.7	$ 11.0	$ 1.4
fSight
Subsequent Event [Line Items]
Common stock, shares issued		86,017	166,271

Income Taxes - Schedule of Reconciliation of the Provision Computed at the Federal Statutory Rate to the Company's Provision (Benefit) for Income Taxes (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	21.00%	21.00%
State tax, net of federal benefit	0.90%	22.90%
Research and development tax credits	0.30%	32.40%
Global intangible low taxed income	(0.10%)	(17.10%)
Foreign rate differential	0.10%	6.00%
Transaction costs	0.00%	(109.10%)
Stock based compensation	(1.50%)	(31.40%)
Foreign tax and other	0.10%	(17.40%)
Deferred tax adjustments	0.00%	316.20%
Change in valuation allowance	(20.40%)	(239.70%)
Other	(0.60%)
Total	(0.20%)	(16.20%)

Leases (Tables)

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Summary of Components of Lease Expense

The components of lease expense are as follows (in thousands):


	Year Ended December 31,
(in thousands)	2024		2023
Operating lease costs	$	1,302	$	1,127
Variable lease costs		510		395
Total lease cost	$	1,812	$	1,522

Schedule of Other Information

Other information related to leases was as follows:


	Year Ended December 31,
Supplemental Cash Flows Information (in thousands)	2024		2023
Operating lease right of use assets obtained in exchange for operating lease liabilities	$	195	$	2,247
Cash paid for amounts included in the measurement of lease liabilities	$	1,362	$	1,087


	December 31, 2024			December 31, 2023
Weighted-average remaining lease term (years)		2.5			2.9
Weighted-average discount rate		4.9	%		8.5	%

Schedule of Future Maturities of Lease Liabilities

Future maturities of lease liabilities were as follows as of December 31, 2024:


(in thousands)	Operating Leases
2025	$	742
2026		473
2027		366
2028		136
2029		8
Thereafter		—
Total future minimum lease payments	$	1,725
Less: imputed interest		115
Present value of lease liabilities	$	1,610

Stockholders' Equity - Summary of Shares Issued (Details) - 2024 ATM Program
$ / shares in Units, $ in Thousands

12 Months Ended

Dec. 31, 2024

USD ($)

$ / shares

Class of Stock [Line Items]

Shares Issued | shares

16,336,000

Average Net Price Per Share | $ / shares

$ 0.98

^[1]

Gross Proceeds

$ 17

Net Proceeds

$ 16

[1]	Represents the average price per share after commission.

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
-Paragraph 13
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2024

Accounting Policies [Abstract]

Summary of Activity in Allowance for Credit losses

The following table sets forth activities in the allowance for credit losses for the periods indicated:


	Year Ended December 31,
(in thousands)	2024			2023
Allowance for credit losses, beginning balance	$	4,011		$	76
Net charges to (recovery) or expense		(1,629	)		3,960
Write-offs, net of recoveries		(143	)		(25	)
Allowance for credit losses, ending balance	$	2,239		$	4,011

Summary of Changes in Product Warranty Liability

The following table summarizes the changes in product warranty liability:


	Year Ended December 31,
(in thousands)	2024			2023
Balance at the beginning of the period	$	5,632		$	4,351
Provision for warranty issued during period		1,284			2,153
Changes in estimate		(758	)		(451	)
Settlements		(360	)		(421	)
Balance at the end of the period	$	5,798		$	5,632

Net Revenue - Summary of Net Revenue by Major Geographic Region Based on Customers' Location (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Disaggregation of Revenue [Line Items]

Total net revenue

$ 54,014

$ 145,233

EMEA

Disaggregation of Revenue [Line Items]

Total net revenue

32,593

^[1]

109,301

Americas

Disaggregation of Revenue [Line Items]

Total net revenue

13,132

^[2]

25,171

APAC

Disaggregation of Revenue [Line Items]

Total net revenue

$ 8,289

$ 10,761

[1]	Our net revenues generated from Germany and the Czech Republic represented 16.3% and 11.8% of our total net revenue for the year ended December 31, 2024, respectively.
[2]	Our net revenues generated from the United States represented 20.7% of our total net revenue for the year ended December 31, 2024.

- 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.

+ References + Details

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 32
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

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-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

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-Section 50
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 606
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-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

+ Details

Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 1,302	$ 1,127
Variable lease costs	510	395
Total lease cost	$ 1,812	$ 1,522

Stockholders' Equity - Schedule of Shares of Common Stock Reserved for Future Issuance (Details)	Dec. 31, 2024 shares
Class of Stock [Line Items]
Shares of common stock reserved for future issuance	15,497,433
Stock Options Issued and Outstanding
Class of Stock [Line Items]
Shares of common stock reserved for future issuance	5,403,090
Restricted Stock Units and Performance Stock Units Issued And Outstanding
Class of Stock [Line Items]
Shares of common stock reserved for future issuance	3,863,994
Shares Available for Potential Conversion of L1 Convertible Note
Class of Stock [Line Items]
Shares of common stock reserved for future issuance	5,305,861
Shares Available for Grant under 2023 Equity Incentive Plan
Class of Stock [Line Items]
Shares of common stock reserved for future issuance	924,488

- 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.

+ References

+ Details

Net Loss Per Share - Summary of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Basic net loss per common share calculation:
Net loss attributable to common stockholders	$ (62,746)	$ (4,383)
Undistributed loss to preferred stock stockholders		1,418
Net loss attributable to common stockholders - basic	$ (62,746)	$ (2,965)
Weighted-average shares of common stock outstanding - basic	60,263,190	38,048,516
Net loss per share of common stock - basic	$ (1.04)	$ (0.08)
Diluted net loss per common share calculation:
Net loss attributable to common stockholders	$ (62,746)	$ (4,383)
Reverse: interest expense and change in fair value on derivative liability		(4,322)
Net loss attributable to common stockholders	(62,746)	(8,705)
Undistributed loss to preferred stock stockholders		2,817
Net loss attributable to common stockholders - diluted	$ (62,746)	$ (5,888)
Weighted-average shares of common stock outstanding - basic	60,263,190	38,048,516
Convertible promissory note		5,174,618
Weighted-average shares of common stock - diluted	60,263,190	43,223,134
Net loss per share of common stock - diluted	$ (1.04)	$ (0.14)

Goodwill and Intangible Assets - Summary of Amortization Expense Related to Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2025	$ 270
2026	270
2027	262
2028	260
2029	227
Thereafter	633
Total	$ 1,922	$ 2,192

Summary of Significant Accounting Policies - Summary of Changes in Product Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Product Warranties Disclosures [Abstract]
Balance at the beginning of the period	$ 5,632	$ 4,351
Provision for warranty issued during period	1,284	2,153
Changes in estimate	(758)	(451)
Settlements	(360)	(421)
Balance at the end of the period	$ 5,798	$ 5,632

Acquisition of Foresight Energy, Ltd. - Additional Information (Details) - USD ($)

12 Months Ended

Jul. 25, 2024

Jan. 25, 2024

Jan. 25, 2023

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Business Acquisition [Line Items]

Common stock issued (in Shares)

5,598,751

60,800,130

58,751,666

Acquisition related costs

$ 0

$ 200,000

Liability at a fair value

$ 2,100,000

Liability revalued

$ 100,000

Change in fair value business combination

$ 3,000,000

$ 200,000

Fair value

$ 11,000,000

700,000

$ 1,400,000

Revenues

$ 600,000

Net loss in business

$ 1,400,000

Total consideration excluding consideration on loan

$ 13,200,000

Increase decrease on contingent shares issuable

5,745

252,288

Fair Value Guarantee

Business Acquisition [Line Items]

Common stock issued (in Shares)

737,233

368,617

Developed Technology

Business Acquisition [Line Items]

Useful Life (Years)

10 years

Net assets acquired

$ 1,800,000

Customer Relationships

Business Acquisition [Line Items]

Useful Life (Years)

10 years

Net assets acquired

$ 200,000

fSight

Business Acquisition [Line Items]

Common stock issued (in Shares)

86,017

166,271

Equity interest percentage

100.00%

Liability revalued

$ 400,000

Deemed settlement of loan payable

^[1]

$ 527,000

Total consideration

^[1]

$ 13,668,000

Common stock as converted basis of business combination

1,306,385

fSight | Fair Value Guarantee

Business Acquisition [Line Items]

Common stock as converted basis of business combination

172,022

86,011

fSight | Developed Technology

Business Acquisition [Line Items]

Net assets acquired

$ 1,820,000

fSight | Customer Relationships

Business Acquisition [Line Items]

Net assets acquired

$ 170,000

[1]

Leases

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Leases

13.

Leases

As a lessee, the Company currently leases office space and vehicles in the United States, Italy, Israel, China, Philippines and Thailand. All of the Company’s leases are classified as operating leases. The Company has no leases classified as finance or sales-type leases. For leases with terms greater than 12 months, the Company records the related assets and obligations at the present value of lease payments over the term. A portion of the Company’s leases include rental escalation clauses, renewal options and/or termination options that are factored into the Company’s determination of lease payments.

When available, the Company uses the rate implicit in the lease to discount lease payments to present value; however, most of its leases do not provide a readily determinable implicit rate. Therefore, the Company must estimate its incremental borrowing rate to discount the lease payments based on information available at lease commencement. The majority of the Company’s leases have remaining lease terms of one to seven years, some of which include options to extend the leases for up to eight years, and some of which include options to terminate the leases within one year.

The components of lease expense are as follows (in thousands):


	Year Ended December 31,
(in thousands)	2024		2023
Operating lease costs	$	1,302	$	1,127
Variable lease costs		510		395
Total lease cost	$	1,812	$	1,522

Other information related to leases was as follows:


	Year Ended December 31,
Supplemental Cash Flows Information (in thousands)	2024		2023
Operating lease right of use assets obtained in exchange for operating lease liabilities	$	195	$	2,247
Cash paid for amounts included in the measurement of lease liabilities	$	1,362	$	1,087


	December 31, 2024			December 31, 2023
Weighted-average remaining lease term (years)		2.5			2.9
Weighted-average discount rate		4.9	%		8.5	%

Future maturities of lease liabilities were as follows as of December 31, 2024:


(in thousands)	Operating Leases
2025	$	742
2026		473
2027		366
2028		136
2029		8
Thereafter		—
Total future minimum lease payments	$	1,725
Less: imputed interest		115
Present value of lease liabilities	$	1,610

Supplementary Balance Sheet and Geographic Information - Schedule of Long-Lived Assets by Geographical Areas (Details) - USD ($)
$ in Thousands

Dec. 31, 2024

Dec. 31, 2023

Revenues from External Customers and Long-Lived Assets [Line Items]

Total long-lived assets

$ 4,388

$ 5,961

EMEA

Revenues from External Customers and Long-Lived Assets [Line Items]

Total long-lived assets

1,545

^[1]

1,770

Americas

Revenues from External Customers and Long-Lived Assets [Line Items]

Total long-lived assets

719

^[2]

1,384

APAC

Revenues from External Customers and Long-Lived Assets [Line Items]

Total long-lived assets

$ 2,124

^[3]

$ 2,807

[1]	As of December 31, 2024, 26.6% of the Company’s total long-lived assets were located in Israel.
[2]	As of December 31, 2024, 16.4% of the Company's total long-lived assets were located in the U.S.
[3]	As of December 31, 2024, 35.5% and 13.0% of the Company's total long-lived assets were located in Thailand and China, respectively.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	16. Subsequent Events The Company evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the consolidated financial statements were issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the consolidated financial statements.

Fair Value of Financial Instruments - Schedule of fair value of the warrant liabilities is estimated using the Black-Scholes option pricing model (Details) - USD ($)		12 Months Ended
	May 23, 2023	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Expected volatility		72.40%	68.10%
Risk-free interest rate		3.50%	4.10%
Expected term (in years)		6 years	6 years
Warrant Liabilities
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Expected volatility, minimum	68.00%
Expected volatility, maximum	70.00%
Risk-free interest rate, minimum	4.10%
Risk-free interest rate, maximum	4.28%
Fair value of Series C convertible preferred stock	$ 1,890
Minimum [Member] \| Warrant Liabilities
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Expected term (in years)	2 years
Maximum [Member] \| Warrant Liabilities
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Expected term (in years)	2 years 7 months 6 days

Stock-Based Compensation - Schedule of table summarizes stock option activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares, Outstanding	4,872,527
Number of shares, Outstanding, Granted	2,786,951
Number of shares, Outstanding, Exercised	(789,097)
Number of shares, Outstanding, Forfeited/expired	(1,467,291)
Number of shares, Outstanding	5,403,090
Number of shares, Exercisable	2,630,187
Weighted average exercise price per share, Outstanding	$ 3.64
Weighted average exercise price per share, Granted	1.49
Weighted average exercise price per share, Exercised	0.34
Weighted average exercise price per share, Forfeited/expired	8.31
Weighted average exercise price per share, Outstanding	1.74	$ 3.64
Weighted average exercise price per share, Exercisable	$ 1.63
Weighted average remaining contractual term (years), Outstanding at ending	7 years 2 months 4 days	6 years 1 month 6 days
Weighted average remaining contractual term (years), Exercisable	4 years 9 months 29 days
Aggregate intrinsic value, Outstanding	$ 581
Aggregate intrinsic value, Exercisable	$ 568

Net Revenue - Summary of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred Revenue and Product Warranties Disclosures [Abstract]
Deferred revenue, beginning of the period	$ 801	$ 1,122
Deferral of revenue	7,585	30,370
Recognition of unearned revenue	(7,217)	(30,691)
Deferred revenue, end of the period	$ 1,169	$ 801

Goodwill and Intangible Assets - Summary of Intangible Assets by Major Asset Class (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,440	$ 2,440
Accumulated Amortization	(518)	(248)
Net Book Value	$ 1,922	$ 2,192
Patents
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	6 years 8 months 12 days	6 years 8 months 12 days
Gross	$ 450	$ 450
Accumulated Amortization	(137)	(65)
Net Book Value	$ 313	$ 385
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	10 years	10 years
Gross	$ 170	$ 170
Accumulated Amortization	(33)	(16)
Net Book Value	$ 137	$ 154
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	10 years	10 years
Gross	$ 1,820	$ 1,820
Accumulated Amortization	(348)	(167)
Net Book Value	$ 1,472	$ 1,653

- 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.

+ References + Details

Summary of Significant Accounting Policies - Summary of Activity in Allowance for Credit losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Allowance for credit losses, beginning balance	$ 4,011	$ 76
Net charges to (recovery) or expense	(1,629)	3,960
Write-offs, net of recoveries	(143)	(25)
Allowance for credit losses, ending balance	$ 2,239	$ 4,011

Fair Value of Financial Instruments - Schedule of changes in fair value of the company's marketable securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Available-for-sale marketable securities:
Total Current Assets		$ 26,806
Long-term assets
Total Long-term assets		1,977
Total Available for sale Marketable Securities, Total	$ 8,156	28,783
Corporate bonds [Member]
Available-for-sale marketable securities:
Total Current Assets	2,018	17,511
Long-term assets
Total Long-term assets		1,977
U.S. agency securities [Member]
Available-for-sale marketable securities:
Total Current Assets	6,138	9,295
Cost [Member]
Available-for-sale marketable securities:
Total Current Assets		26,861
Long-term assets
Total Long-term assets		1,981
Total Available for sale Marketable Securities, Total	8,154	28,842
Cost [Member] \| Corporate bonds [Member]
Available-for-sale marketable securities:
Total Current Assets	2,019	17,561
Long-term assets
Total Long-term assets		1,981
Cost [Member] \| U.S. agency securities [Member]
Available-for-sale marketable securities:
Total Current Assets	6,135	9,300
Unrealized gain [Member]
Available-for-sale marketable securities:
Total Current Assets		4
Long-term assets
Total Long-term assets		3
Total Available for sale Marketable Securities, Total	3	7
Unrealized gain [Member] \| Corporate bonds [Member]
Available-for-sale marketable securities:
Total Current Assets		2
Long-term assets
Total Long-term assets		3
Unrealized gain [Member] \| U.S. agency securities [Member]
Available-for-sale marketable securities:
Total Current Assets	3	2
Unrealized loss [Member]
Available-for-sale marketable securities:
Total Current Assets		(59)
Long-term assets
Total Long-term assets		(7)
Total Available for sale Marketable Securities, Total	(1)	(66)
Unrealized loss [Member] \| Corporate bonds [Member]
Available-for-sale marketable securities:
Total Current Assets	$ (1)	(52)
Long-term assets
Total Long-term assets		(7)
Unrealized loss [Member] \| U.S. agency securities [Member]
Available-for-sale marketable securities:
Total Current Assets		$ (7)

Long-Term Debt - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 09, 2023	Dec. 31, 2024	Jan. 31, 2023
Debt Instrument [Line Items]
Cash received from promissory note purchase agreement	$ 50.0	$ 50.0
Convertible promissory note, interest rate	5.00%
Convertible promissory note, maturity date		Jan. 09, 2026
Convertible promissory note, frequency of periodic payment		interest is payable semiannually beginning July 2023.
Convertible promissory note conversion, description		the Convertible Promissory Note may be converted at the option of the note holder into the Company’s common stock or an equivalent equity instrument resulting from a public company event. The conversion price is based on a pre-money valuation divided by the aggregate number of the Company’s outstanding shares at the issuance date and adjusted for any cash dividends paid on the Company’s capital stock. The conversion price and number of conversion shares are subject to standard anti-dilution adjustments. Upon a change of control event the note holder may (i) convert the Convertible Promissory Note immediately prior to the event into the Company’s common stock at a conversion price equal to the lesser of the Convertible Promissory Note’s original conversion price or the price per share of the Company’s common stock implied by the change of control event transaction agreement or (ii) require the redemption of the Convertible Promissory Note in cash, including the payment of a make-whole amount of all unpaid interest that would have otherwise been payable had the Convertible Promissory Note remained outstanding through the maturity date.
Accrued interest		$ 1.2
Note purchase agreement default description		The Note Purchase Agreement defines events of default as the occurrence of any one of the following; 1) a default in payment of any part of principal or unpaid accrued interest on the Convertible Promissory Note when due and payable; 2) the Company issues a written statement that it is unable to pay its debts as they become due, or the Company files a voluntary petition for bankruptcy or insolvency proceeding, the Company, or its directors or majority stockholders take action looking to the dissolution or liquidation of the Company; 3) the involuntary bankruptcy of the Company defined as the commencement of any proceeding against the Company seeking any bankruptcy reorganization; 4) the Company defaults on any of its performance obligations under the Note Purchase Agreement; 5) any material portion of the assets of the Company or any subsidiary of the Company is seized or a levy is filed against such assets; 6) a default that remains uncured on any other agreement evidencing the indebtedness of the Company or its subsidiaries for an amount of $10 million or more whose terms allow for the acceleration of the repayment of such indebtedness due to the consummation of the transactions contemplated in this Note Purchase Agreement.
Debt default amount uncured		$ 10.0
Series 2022-1 Notes
Debt Instrument [Line Items]
Unamortized debt issuance costs			$ 0.2

Acquisition of Foresight Energy, Ltd.

12 Months Ended

Dec. 31, 2024

fSight

Business Acquisition [Line Items]

Acquisition of Foresight Energy, Ltd.

On January 25, 2023 (“Acquisition Closing Date”), Legacy Tigo acquired 100% of the equity interests of fSight. The results of fSight’s operations have been included in the consolidated financial statements since the Acquisition Closing Date. fSight primarily focuses on developing and marketing a software as a service platform, based on artificial intelligence for the smart management of electrical energy. The acquisition expands the Company’s ability to leverage energy consumption and production data for solar energy producers, adding a prediction platform that provides actionable system performance data, from the grid down to the module level. The Company changed the name of fSight to Tigo Energy AI Ltd. in September 2024.

Under the terms of the purchase agreement, total consideration amounted to $13.2 million which consisted of 5,598,751 shares of Legacy Tigo’s common stock (which represents 1,306,385 shares of common stock on an as-converted basis as a result of the Business Combination) issued at closing with a fair value of approximately $11.0 million, 737,233 shares of Legacy Tigo’s common stock (which represents 172,022 shares of common stock on an as-converted basis as a result of the Business Combination) with a fair value of approximately $1.4 million to be issued 12 months from closing and 368,617 shares of Legacy Tigo’s common stock (which represents 86,011 shares of common stock on an as-converted basis as a result of the Business Combination) with a fair value of approximately $0.7 million to be issued 18 months from closing (collectively with the shares to be issued at 12 months “Contingent Shares”). In addition to the consideration in the purchase agreement, there is an additional $0.5 million in consideration related to a loan that the Company issued to fSight prior to the Acquisition Closing Date, for a total consideration transferred of $13.7 million. The loan payable was deemed settled immediately following the Acquisition Closing Date.

Pursuant to the terms of the purchase agreement, the Contingent Shares are subject to adjustment based on certain indemnification obligations, liabilities or settlements that may arise during the contingency period, which ends 18 months following the Acquisition Closing Date. During the year ended December 31, 2023, there was an adjustment recorded against the Contingent Shares related to an unrecorded liability that was not present as of the opening balance sheet date of January 25, 2023, and the number of Contingent Shares was adjusted downward by 5,745 shares to reflect this change. As of December 31, 2023, there was a total of up to 252,288 Contingent Shares that may be issued pursuant to the terms of the purchase agreement.

The contingent shares were recorded as a liability at a fair value of approximately $2.1 million on the Acquisition Closing Date based on the fair value of Legacy Tigo’s common stock at the Acquisition Closing Date. The contingent shares liability is recorded in accrued expenses and other current liabilities financial statement line items within the consolidated balance sheet.

On January 25, 2024, consistent with the terms of the purchase agreement, the Company issued the 12-month tranche of Contingent Shares, 166,271 shares of its common stock, to certain former equity holders of fSight. At January 25, 2024, the liability was revalued to $0.4 million based upon the Company’s common stock fair value per share at that date. A mark-to-market gain of $0.2 million was recorded upon the remeasurement at January 25, 2024. Additionally, on July 25, 2024, consistent with the terms of the purchase agreement, the Company issued the 18-month tranche of Contingent Shares, 86,017 shares of its common stock, to certain former equity holders of fSight. At July 25, 2024, the liability was revalued to $0.1 million, and the Company recognized a mark-to-market expense of $3,000 related to the remeasurement upon issuance of the final tranche of Contingent Shares. As of December 31, 2024, all Contingent Shares have been issued.

The transaction was accounted for as a business combination pursuant to ASC Topic 805, “Business Combinations”, using the acquisition method of accounting and in conjunction with the acquisition, Legacy Tigo recognized $0.2 million of acquisition-related costs during the year ended December 31, 2023. The Company did not

incur any expenses associated with acquisition-related costs during the year ended December 31, 2024. The acquisition-related costs, which were expensed as incurred, are recorded in general and administrative expenses on the condensed consolidated statement of operations and comprehensive loss.

The following table summarizes the provisional fair values of the identifiable assets acquired and liabilities assumed at the date of the acquisition:


(in thousands)
Consideration transferred(1):
Fair value of common stock issued	$	10,974
Fair value of contingent shares		2,167
Deemed settlement of loan payable		527
Total consideration	$	13,668

Assets Acquired
Cash and cash equivalents	$	55
Accounts receivable		117
Property and equipment		9
Developed technology		1,820
Customer relationships		170
Goodwill		12,209
Total assets acquired	$	14,380
Liabilities Assumed
Accounts payable	$	418
Accrued expenses		294
Net assets acquired	$	13,668

(1)

During the fourth quarter of 2023, upon the recognition that the liabilities associated with other current liabilities and other long-term liabilities, initially assumed and incorporated within the opening balance sheet as of January 25, 2023, were not obligatory, the Company made an adjustment to the financial statement line items associated with these liabilities and correspondingly adjusted goodwill. Additionally, in the fourth quarter of 2023, the Company finalized its fair value determination on the acquired assets and assumed liabilities, and completed its assessment of the purchase price allocation. The purchase price was allocated to the tangible assets and identifiable intangible assets acquired and liabilities assumed based on their acquisition date estimated fair values. Accounts receivable and property and equipment acquired were not material in size or scope, and the carrying amounts of these assets represented their fair value. The identifiable intangible assets consist of developed technology and customer relationships which were assigned fair values of approximately $1.8 million and $0.2 million, respectively. The developed technology and customer relationships are all being amortized on a straight-line basis over 10 years.

Goodwill represents the excess of the purchase price over the identifiable tangible and intangible assets acquired in addition to liabilities assumed arising from the business combination. The Company believes the goodwill related to the acquisition was attributable to the expected synergies, value of the assembled workforce, and the collective experience of the management team with regards to its operations, customers, and industry. As a non-taxable stock acquisition, the value attributable to the acquired intangibles and goodwill are not tax deductible.

Supplemental Pro Forma Information (Unaudited)


(in thousands)	December 31, 2023
Net revenue	$	145,301
Net loss	$	(1,130	)

Supplemental Information of Operating Results

For the year ended December 31, 2023, the Company’s consolidated statement of operations included net revenues of $0.6 million and a net loss of $1.4 million attributable to fSight.

Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Valuation Allowance [Line Items]
Income tax expense	$ 103,000	$ 138,000
Income tax expense related to foreign earnings	100,000	100,000
Valuation allowance	36,880	24,281
Increase in valuation allowance	12,600,000	1,700,000
Gross unrecognized tax benefits	1,489,000	1,381,000	$ 952,000
Unrecognized tax benefits increase (decrease)	$ 100,000	400,000
Income tax examination, description	There are no tax examinations in any material tax jurisdictions.
Interest and penalties accrued	$ 0
Domestic Tax Authority
Valuation Allowance [Line Items]
Valuation allowance	36,900,000
Operating loss carryforwards	73,600,000
Net operating loss carryforwards, not subject to expiration	38,800,000
Net operating loss carryforwards, subject to expiration	$ 34,800,000
Operating loss carryforward, year	2028
Research and development tax credit carryforwards	$ 2,500,000
Tax credit carryforward, expiration	2033
Domestic Tax Authority \| Internal Revenue Service (IRS)
Valuation Allowance [Line Items]
Open tax year	2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Foreign Tax Authority
Valuation Allowance [Line Items]
Valuation allowance		$ 24,300,000
Operating loss carryforwards	$ 15,400,000
State and Local Jurisdiction
Valuation Allowance [Line Items]
Operating loss carryforwards	$ 56,800,000
Operating loss carryforward, year	2028
Research and development tax credit carryforwards	$ 2,500,000

Fair Value of Financial Instruments - Schedule of fair value of the derivative liabilities is estimated using the Black-Scholes option pricing model (Details)

12 Months Ended

Sep. 24, 2023

Dec. 31, 2024

Dec. 31, 2023

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Expected volatility

72.40%

68.10%

Risk-free interest rate

3.50%

4.10%

Expected term (in years)

6 years

Derivative Liability

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Expected volatility

^[1]

58.60%

Risk-free interest rate

^[1]

4.90%

Expected term (in years)

^[1]

2 years 3 months 18 days

[1]	The fair value of the convertible note derivative liability was remeasured on September 24, 2023, immediately prior to the execution of the Convertible Note Amendment.

Stock-Based Compensation - Schedule of PSU Activity (Details) - Performance Stock Units	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares, Granted \| shares	1,940,602
Number of shares, Forfeited \| shares	(180,554)
Number of shares, Outstanding at December 31, 2024 \| shares	1,760,048
Weighted Average Grant Date Fair Value, Granted \| $ / shares	$ 1.58
Weighted Average Grant Date Fair Value, Forfeited \| $ / shares	1.6
Weighted average grant date fair value, Outstanding at December 31, 2024 \| $ / shares	$ 1.58

- 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.

+ References

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+ Details

Consolidated Statements of Convertible Preferred Stock and Changes In Stockholders' Equity (Deficit) - USD ($)
$ in Thousands

Total

Convertible Preferred Stock

Preferred Stock

Convertible Preferred Stock

Common Stock

Additional Paid-in Capital

Accumulated Deficit

Accumulated other comprehensive (loss) gain

Balance, before retroactive conversion

$ (55,692)

$ 87,140

$ 2

$ 6,521

$ (62,215)

Retroactive application

$ (1)

Retroactive application, shares

^[1]

(152,677,720)

(17,972,432)

Balance, before retroactive conversion, shares

^[1]

199,145,285

23,442,353

Beginning balance at Dec. 31, 2022

(55,692)

$ 87,140

$ 1

6,522

(62,215)

Beginning balance, shares at Dec. 31, 2022

^[1]

46,467,565

5,469,921

Issuance of common stock upon exercise of stock options

215

Issuance of common stock upon exercise of stock options, shares

^[1]

433,906

Stock-based compensation expense

3,808

Issuance of common stock in connection with the acquisition of fSight

10,077

Issuance of common stock in connection with the acquisition of fSight, shares

^[1]

1,306,385

Purchase price adjustment in connection with the fSight acquisition

898

Forfeitures of restricted stock and restricted stock surrendered in lieu of withholding taxes

(91)

Forfeitures of restricted stock and restricted stock surrendered in lieu of withholding taxes, shares

^[1]

(11,832)

Convertible preferred stock dividends

12,581

(12,581)

Convertible preferred stock dividends, shares

^[1]

1,258,055

Issuance of preferred stock upon exercise of preferred warrants

2,008

Issuance of preferred stock upon exercise of preferred warrants, shares

^[1]

193,372

Conversion of convertible preferred stock into common stock in connection with the Business Combination

87,140

$ (87,140)

$ 5

87,135

Conversion of convertible preferred stock into common stock in connection with the Business Combination, shares

^[1]

(47,918,992)

47,918,992

Issuance of common stock upon exercise of common warrants, shares

^[1]

1,491,229

Stock Issued During Period, Shares, Acquisitions

^[1]

1,306,385

Issuance of common stock upon Business Combination, shares

^[1]

1,818,519

Issuance of common stock upon Business Combination, value

573

Issuance of common stock upon exercise of common stock warrants, net of issuance costs and payments to warrant holders of non-redeemed warrants

3,653

Issuance of common stock upon exercise of common stock warrants, net of issuance costs and payments to warrant holders of non-redeemed warrants, shares

^[1]

324,546

Reclassification of convertible note derivative liability to equity

11,278

Unrealized gain (loss) resulting from change in fair value of marketable securities

(59)

$ (59)

Net loss

(984)

Ending balance at Dec. 31, 2023

62,824

$ 6

138,657

(75,780)

(59)

Ending balance, shares at Dec. 31, 2023

^[1]

58,751,666

Issuance of common stock upon exercise of stock options

$ 272

272

Issuance of common stock upon exercise of stock options, shares

789,097

Stock-based compensation expense

$ 7,721

7,721

Issuance of common stock in connection with the acquisition of fSight

375

Issuance of common stock in connection with the acquisition of fSight, shares

252,288

Issuance of common stock in connection with employee incentive restricted stock awards, shares

1,088,384

Issuance of common stock in connection with at-the-market offering, net of offering costs

16,336

Shares withheld for taxes upon restricted stock awards vesting

(122)

Shares withheld for taxes upon restricted stock awards vesting, shares

(97,641)

Stock Issued During Period, Shares, Acquisitions

252,288

Unrealized gain (loss) resulting from change in fair value of marketable securities

Net loss

(62,746)

Ending balance at Dec. 31, 2024

$ 8,385

$ 6

$ 146,903

$ (138,526)

$ 2

Ending balance, shares at Dec. 31, 2024

60,800,130

[1]	The shares of the Company’s common and redeemable convertible preferred stock prior to the Business Combination (as defined in Note 1) have been retroactively restated to reflect the exchange ratio of approximately 0.233335 established in the Business Combination as described in Note 3.

Fair Value of Financial Instruments - Schedule of company's assets that are measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Level 1 [Member]
Cash equivalents:
Money market accounts	$ 6,839	$ 1,646
Liabilities:
Contingent shares liability from fSight acquisition		527
Level 2 [Member] \| Corporate bonds [Member]
Marketable securities:
Marketable securities	2,018	19,489
Level 2 [Member] \| U.S. agency securities [Member]
Cash equivalents:
Money market accounts	499
Marketable securities:
Marketable securities	$ 6,138	$ 9,294

Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2024

Segment Reporting [Abstract]

Schedule of Long-Lived Assets by Geographical Areas

The following table presents the Company’s long-lived assets, which consist of tangible property and equipment, net of depreciation, and operating ROU assets, by geographic region (in thousands):


Long-lived assets	December 31, 2024		December 31, 2023
EMEA(1)	$	1,545	$	1,770
Americas(2)		719		1,384
APAC(3)		2,124		2,807
Total long-lived assets	$	4,388	$	5,961

(1)

As of December 31, 2024, 26.6% of the Company’s total long-lived assets were located in Israel.

(2)

As of December 31, 2024, 16.4% of the Company's total long-lived assets were located in the U.S.

(3)

As of December 31, 2024, 35.5% and 13.0% of the Company's total long-lived assets were located in Thailand and China, respectively.

Fair Value of Financial Instruments - Summary of changes in fair value of preferred stock warrant liability (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Schedule Of Changes In Fair Value Of The Company S Preferred Stock Warrant Liability Abstract
Balance at beginning	$ 1,507
Change in fair value	501
Exercise of warrants	$ (2,008)

Supplementary Balance Sheet and Geographic Information - Summary of Selected Financial Data (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 662	$ 668
Finished goods	21,335	60,733
Inventory, net	$ 21,997	$ 61,401

Stock-Based Compensation - Schedule of Fair Value of Each Stock Option Estimated Using Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected volatility	72.40%	68.10%
Risk-free interest rate	3.50%	4.10%
Expected term (in years)	6 years	6 years

- 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.

+ References

+ Details

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets by Major Asset Class

The Company’s intangible assets by major asset class are as follows:


	December 31, 2024
(in thousands, except for useful life amounts)	Weighted Average Useful Life (Years)	Gross		Accumulated Amortization			Net Book Value
Amortizing:
Patents	6.7	$	450	$	(137	)	$	313
Customer relationships	10.0		170		(33	)		137
Developed technology	10.0		1,820		(348	)		1,472
Total intangible assets		$	2,440	$	(518	)	$	1,922


	December 31, 2023
(in thousands, except for useful life amounts)	Weighted Average Useful Life (Years)	Gross		Accumulated Amortization			Net Book Value
Amortizing:
Patents	6.7	$	450	$	(65	)	$	385
Customer relationships	10.0		170		(16	)		154
Developed technology	10.0		1,820		(167	)		1,653
Total intangible assets		$	2,440	$	(248	)	$	2,192

Schedule of Amortization Expense Related to Intangible Assets

Amortization expense related to intangible assets at December 31, 2024, in each of the next five years and beyond is expected to be incurred as follows (in thousands):


(in thousands)	Amount
2025	$	270
2026		270
2027		262
2028		260
2029		227
Thereafter		633
	$	1,922

Stock-Based Compensation - Additional Information (Details) - USD ($)		12 Months Ended
	Nov. 12, 2024	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected dividend yield percentage		0.00%
Stock options percentage		110.00%
Shares reserved for future issuance		15,497,433
Granted options to purchase an aggregate shares of common stock		2,786,951
Stock options, Options exercises		789,097
Unrecognized compensation expense (in Dollars)		$ 6,900,000
Weighted-average period		2 years 10 months 24 days
Business acquisition shares exchange ratio			23.3335%
Option Exchange Program
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expiration date		Dec. 10, 2024
Option Exchange Program \| Common Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Exchange eligible options to purchase an aggregate shares of common stock	725,028
Percentage of eligible options exchanged	96.60%
Restricted Stock Units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation cost		$ 5,700,000
Weighted-average period for unrecognized compensation expense to be recognized		1 year 9 months 18 days
Performance Stock Units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options vesting period		3 years
Unrecognized compensation cost		$ 0
Recognized compensation expense		$ 0
2008 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Capital stock percentage		10.00%
Capital stock duration		10 years
2018 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Capital stock percentage		10.00%
Capital stock duration		10 years
Stock options percentage		100.00%
2023 Plan \| Option Exchange Program \| Common Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted options to purchase an aggregate shares of common stock	181,107
2023 Plan \| Restricted Stock Units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options vesting period		3 years
2023 Plan \| Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options vesting period		4 years
Stock options vesting percentage		25.00%
Stock options, Options vested		557,959
Stock options, Options exercises		0

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 11,746	$ 4,405
Marketable securities, short-term	8,156	26,806
Accounts receivable, net of allowance for credit losses of $2,239 and $4,011 at December 31, 2024 and December 31, 2023, respectively	7,976	6,862
Inventory	21,997	61,401
Prepaid expenses and other current assets	3,533	5,236
Total current assets	53,408	104,710
Property and equipment, net	2,812	3,458
Operating right-of-use assets	1,576	2,503
Marketable securities, long-term	0	1,977
Intangible assets, net	1,922	2,192
Other assets	984	728
Goodwill	12,209	12,209
Total assets	72,911	127,777
Current liabilities:
Accounts payable	8,077	15,685
Accrued expenses and other current liabilities	7,361	8,681
Deferred revenue, current portion	525	335
Warranty liability, current portion	496	526
Operating lease liabilities, current portion	649	1,192
Total current liabilities	17,108	26,419
Warranty liability, net of current portion	5,302	5,106
Deferred revenue, net of current portion	644	466
Long-term debt, net of unamortized debt discount and issuance costs	40,511	31,570
Operating lease liabilities, net of current portion	961	1,392
Total liabilities	64,526	64,953
Commitments and Contingencies (Note 10)
Stockholders' equity
Common stock, $0.0001 par value: 150,000,000 shares authorized; 60,800,130 and 58,751,666 shares issued and outstanding at December 31, 2024 and December 31, 2023, respectively	6	6
Additional paid-in capital	146,903	138,657
Accumulated deficit	(138,526)	(75,780)
Accumulated other comprehensive income (loss)	2	(59)
Total stockholders' equity	8,385	62,824	$ (55,692)
Total liabilities and stockholders' equity	$ 72,911	$ 127,777

Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
General and administrative expenses	$ 21,060	$ 28,807

Income Taxes - Schedule of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Uncertainties [Abstract]
Balance at beginning of year	$ 1,381	$ 952
Gross increases to prior year tax positions	0	250
Gross increases to current year tax positions	108	179
Balance at end of year	$ 1,489	$ 1,381

Leases - Additional Information (Details)	Dec. 31, 2024
Lessee, Lease, Description [Line Items]
Lease term	12 months
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	7 years

Leases - Schedule of Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Operating lease right of use assets obtained in exchange for operating lease liabilities	$ 195	$ 2,247
Cash paid for amounts included in the measurement of lease liabilities	$ 1,362	$ 1,087
Weighted average remaining lease term (years)	2 years 6 months	2 years 10 months 24 days
Weighted average discount rate	4.90%	8.50%

Consolidated Statements Of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net revenue	$ 54,014	$ 145,233
Cost of revenue	58,170	93,924
Gross (loss) profit	(4,156)	51,309
Operating expenses:
Research and development	9,860	9,496
Sales and marketing	16,921	21,281
General and administrative	21,060	28,807
Total operating expenses	47,841	59,584
Loss from operations	(51,997)	(8,275)
Other (income) expenses, net:
Change in fair value of preferred stock warrant and contingent shares liability	(152)	(1,109)
Change in fair value of derivative liability		(12,247)
Loss on debt extinguishment		171
Interest expense	11,420	8,115
Interest income	(867)	(2,322)
Other expenses (income), net	245	(37)
Total other expenses (income), net	10,646	(7,429)
Loss before income tax expense	(62,643)	(846)
Income tax expense	103	138
Net loss	(62,746)	(984)
Other comprehensive loss:
Unrealized gain (loss) resulting from change in fair value of marketable securities	61	(59)
Total comprehensive loss	(62,685)	(1,043)
Cumulative dividends on convertible preferred stock		(3,399)
Net loss attributable to common stockholders	$ (62,746)	$ (4,383)
Loss per common share
Basic	$ (1.04)	$ (0.08)
Diluted	$ (1.04)	$ (0.14)
Weighted-average common shares outstanding
Basic	60,263,190	38,048,516
Diluted	60,263,190	43,223,134

Merger with Roth CH Acquisition IV Co. - Additional Information (Details) - USD ($)				12 Months Ended
	May 24, 2023	May 23, 2023	May 22, 2023	Dec. 31, 2024	Dec. 31, 2023	Jan. 25, 2023
Business Acquisition [Line Items]
Business acquisition shares exchange ratio					23.3335%
Transaction costs				$ 0	$ 200,000
Common stock, shares issued				60,800,130	58,751,666	5,598,751
Common stock, shares outstanding				60,800,130	58,751,666
Number of warrants outstanding					0
Roth CH Acquisition IV Co.
Business Acquisition [Line Items]
Business acquisition shares exchange ratio		0.23334%
Cash acquired		$ 2,200,000
Prepaid expenses and insurance acquired		600,000
Accrued expenses assumed		$ 3,400
Income tax payables assumed			$ 61,000
Transaction costs				$ 6,100,000
Transaction costs in excess of cash acquired				$ 3,900,000
Common stock conversion basis			one-to-one
Accumulated dividend to redeemable convertible preferred stockholders			$ 12,600,000
Common stock, shares issued	58,144,543
Common stock, shares outstanding	58,144,543
Options to purchase common stock shares	4,358,301
Number of warrants outstanding	5,768,750

Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2024

Debt Disclosure [Abstract]

Schedule of long-term debt

Long-term debt consisted of the following (in thousands):


	December 31, 2024			December 31, 2023
Convertible Promissory Note	$	50,000		$	50,000
Less: unamortized debt discount and issuance costs		(9,489	)		(18,430	)
Long-term debt, net of unamortized debt discount and issuance costs	$	40,511		$	31,570

Schedule of Future Aggregate Principal Maturities of Long-Term Debt

Future aggregate principal maturities of long-term debt are as follows as of December 31, 2024 (in thousands):


2025	$	—
2026		50,000
2027		—
2028		—
2029		—
Thereafter		—
	$	50,000

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Liquidity and Going Concern

Emerging Growth Company Status

Use of Estimates

Concentrations of Credit Risk

During the years ended December 31, 2024, and 2023, there were no individual customers that exceeded 10% of the Company’s annual net revenue.

Segment Information

Fair Value of Financial Instruments

•

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

•

Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liabilities.

•

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

Cash and Cash Equivalents

Marketable Securities

Accounts Receivable and Allowance for Credit Losses


	Year Ended December 31,
(in thousands)	2024			2023
Allowance for credit losses, beginning balance	$	4,011		$	76
Net charges to (recovery) or expense		(1,629	)		3,960
Write-offs, net of recoveries		(143	)		(25	)
Allowance for credit losses, ending balance	$	2,239		$	4,011

Inventory

Property and equipment, net

Leases

Long-Lived Assets

Goodwill and Intangible Assets

Customer Deposits

Product Warranties

The following table summarizes the changes in product warranty liability:


	Year Ended December 31,
(in thousands)	2024			2023
Balance at the beginning of the period	$	5,632		$	4,351
Provision for warranty issued during period		1,284			2,153
Changes in estimate		(758	)		(451	)
Settlements		(360	)		(421	)
Balance at the end of the period	$	5,798		$	5,632

Convertible Promissory Note

Business Combinations

Revenue Recognition

The Company complies with ASC Topic 606, “Revenue from Contracts with Customers” (“ASC Topic 606”) for revenue recognition. In accounting for contracts with customers:

The Company determines revenue recognition through the following steps:

•

Identification of the contract, or contracts, with a customer

•

Identification of the performance obligations in the contract

•

Determination of the transaction price

•

Allocation of the transaction price to the performance obligations in the contract

•

Recognition of revenue when, or as, the Company satisfies a performance obligation

•

The Company records certain contra revenue promotions as variable consideration and recognizes these promotions at the time the related revenue is recorded.

See Note 7 for additional information.

Cost of Revenue

Stock-Based Compensation

Research and Development

Advertising Costs

Income Taxes

Comprehensive Loss

Recently Adopted Accounting Pronouncements

Recently issued accounting pronouncements not yet adopted

Nature of Operations

12 Months Ended

Dec. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Operations

Tigo Energy, Inc. (f/k/a Roth CH Acquisition IV Co.) and subsidiaries (together, the “Company”) consists of Tigo Energy, Inc. (“Tigo”), its wholly-owned direct and indirect subsidiaries: Tigo Energy MergeCo, Inc. (f/k/a Tigo Energy, Inc.) (“Legacy Tigo”), Tigo Energy Brasil Ltda., Tigo Energy Philippines Inc., Tigo Energy Israel Ltd., Tigo Energy AI Ltd. (f/k/a Foresight Energy, Ltd. (“fSight”)), Tigo Energy Italy SRL, Tigo Energy Equipment Trading (Suzhou) Co., Ltd. and Tigo Energy Australia Pty Ltd. Prior to the consummation of the Business Combination (as defined below), the operations of the Company were conducted through Legacy Tigo. Legacy Tigo was incorporated in Delaware in 2007 and commenced operations in 2010.

The Company provides solar and energy storage solutions, including module level power electronics (“MLPE”) designed to maximize the energy output of individual solar modules, delivering more energy, active management, and enhanced safety for utility, commercial, and residential solar arrays. By combining its MLPE and solar optimizer technology with intelligent, cloud-based software capabilities, the Company enables advanced energy monitoring, system diagnostics, and real-time control. These smart hardware and software solutions enhance system performance, lower operating costs, and ensure compliance with safety regulations, including rapid shutdown requirements. In addition to MLPE, the Company develops and manufactures inverters and battery storage systems for the residential solar-plus storage market, further expanding its suite of solutions for efficient and reliable energy management. The Company is headquartered in Campbell, California, with offices in Europe, Asia, and the Middle East.

Entry into a Material Definitive Agreement

On December 5, 2022, Roth CH Acquisition IV Co., a Delaware corporation (“ROCG”), Roth IV Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of ROCG (“Merger Sub”), and Legacy Tigo, entered into an Agreement and Plan of Merger, as amended on April 6, 2023 (the “Merger Agreement”), pursuant to which, among other transactions, on May 23, 2023 (the “Closing Date”), Merger Sub merged with and into Legacy Tigo (the “Merger”), with Legacy Tigo surviving the Merger as a wholly-owned subsidiary of ROCG (the Merger, together with the other transactions described in the Merger Agreement, the “Business Combination”). In connection with the closing of the Business Combination, ROCG changed its name to “Tigo Energy, Inc.”

Please refer to Note 3 “Merger with ROTH CH Acquisition IV Co.” for additional details regarding the Business Combination.

Basis of Presentation

The accompanying audited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”). Any reference in these notes to applicable guidance is meant to refer to GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) promulgated by the Financial Accounting Standards Board (“FASB”).

Pursuant to the Business Combination, the merger between ROCG and Legacy Tigo was accounted for as a reverse recapitalization in accordance with U.S. GAAP (the “Reverse Recapitalization”). Under this method of accounting, ROCG was treated as the “acquired” company for financial reporting purposes. Accordingly, for accounting purposes, the Reverse Recapitalization was treated as the equivalent of Legacy Tigo issuing stock for the net assets of ROCG, accompanied by a recapitalization. The net assets of ROCG are stated at historical cost, with no goodwill or other intangible assets recorded. The consolidated assets, liabilities and results of operations prior to the Reverse Recapitalization are those of Legacy Tigo. The shares and corresponding capital amounts and earnings per share available for common stockholders, prior to the Business Combination, have been retroactively recasted as shares reflecting the exchange ratio established in the Business Combination. Please refer to Note 3 “Merger with ROTH CH Acquisition IV Co.” for additional details regarding the Business Combination.

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The Company has determined the functional currency of the subsidiaries to be the U.S. dollar. The Company remeasures monetary assets and liabilities of its foreign operations at exchange rates in effect at the balance sheet date and nonmonetary assets and liabilities at their historical exchange rates. Net revenue and expenses are remeasured at the weighted-average exchange rates during the relevant reporting period. These remeasurement gains and losses are recorded in other expenses (income), net in the consolidated statements of operations and comprehensive loss and were not material for the years ended December 31, 2024, and 2023.

Supplementary Balance Sheet and Geographic Information - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Inventory reserves	$ 24.1	$ 1.0
Inventory charges	23.5
Depreciation	$ 0.9	$ 0.9

Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2024

Accrued Liabilities and Other Liabilities [Abstract]

Accrued Expenses and Other Current Liabilities


Accrued expenses and other current liabilities	December 31, 2024		December 31, 2023
Accrued vacation	$	924	$	856
Accrued compensation		1,119		2,514
Accrued interest		1,187		1,222
Accrued professional fees		894		409
Accrued warehouse and freight		917		1,001
Accrued other(1)		1,773		1,974
Other current liabilities(2)		547		705
Accrued expenses and other current liabilities	$	7,361	$	8,681

(1)

Accrued other as of December 31, 2024, and December 31, 2023, primarily consist of accrued expenses related to legal expense, insurance expense and sales discounts.

(2)

Stock-Based Compensation - Schedule of RSU Activity (Details) - Restricted Stock Units	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares, Outstanding at December 31, 2023 \| shares	872,037
Number of shares, Granted \| shares	2,557,692
Number of shares, vested \| shares	(1,088,384)
Number of shares, Forfeited/expired \| shares	(237,399)
Number of shares, Outstanding at December 31, 2024 \| shares	2,103,946
Weighted average grant date fair value, Outstanding at December 31, 2023 \| $ / shares	$ 11.27
Weighted Average Grant Date Fair Value, Granted \| $ / shares	1.4
Weighted Average Grant Date Fair Value, Vested \| $ / shares	4.18
Weighted average grant date fair value per share, Forfeited/expired \| $ / shares	6.26
Weighted average grant date fair value, Outstanding at December 31, 2024 \| $ / shares	$ 3.5

Commitments and Contingencies

12 Months Ended

Dec. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

10.

Commitments and Contingencies

Employment Agreements

The Company entered into employment agreements with key personnel providing compensation and severance in certain circumstances, as defined in the respective employment agreements.

Legal

In the normal course of business, the Company may become involved in litigation or legal disputes that are not covered by insurance. While the Company intends to vigorously defend itself with respect to such disputes, any potential outcomes resulting from such claims would be inherently difficult to quantify. The Company makes a provision for a liability relating to legal matters when it is both probable that a liability has been incurred, and the amount of the loss can be reasonably estimated. During the year ended December 31, 2024, the Company has not recorded a material loss with respect to any legal claims or other legal matters arising in the normal course of business.

Indemnification Agreements

From time to time, in its normal course of business, the Company may indemnify other parties with which it enters into contractual relationships, including customers, lessors and parties to other transactions with the Company. The Company may agree to hold other parties harmless against specific losses, such as those that could arise from third-party claims or a breach of representation or covenant. It may not be possible to determine the maximum potential amount of liability under such indemnification agreements due to the unique facts and circumstances that are likely to be involved in each particular claim and indemnification provision. In addition, we believe the likelihood is remote that payments under any indemnification agreements described above will have a material effect on the Company’s consolidated financial statements.

The Company has also indemnified its Directors and Executive Officers, to the extent legally permissible, against all liabilities reasonably incurred in connection with any action in which such individual may be involved by reason of such individual being or having been a Director or Executive Officer.

The Company believes the current estimated fair value of any obligation from these indemnification agreements is minimal; therefore, these condensed consolidated financial statements do not include a liability for potential indemnification-related obligations at December 31, 2024.

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ (62,746)	$ (984)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
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+ Details

Net Revenue - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred Revenue and Product Warranty [Line Items]
Recognized revenue, contract liabilities	$ 1.0	$ 0.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Deferred Revenue and Product Warranty [Line Items]
Remaining performance obligations	$ 1.1
Remaining performance obligations over a weighted average term	3 years 7 months 6 days

Income Taxes - Schedule of Deferred Tax Assets And Liabilities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Net operating loss carryforwards	$ 22,996	$ 19,968
Research and development tax credits	3,146	3,029
Stock based compensation	506	399
Capitalized research costs	3,352	2,491
Lease liability	339	545
Reserves and accruals	2,493	2,297
Uniform capitalization on inventory	1,942	259
Inventory reserve	5,251	217
Other	37	54
Total deferred tax assets	40,062	29,259
Less: valuation allowance	(36,880)	(24,281)
Total deferred tax assets, net of valuation allowance	3,182	4,978
Deferred tax liabilities:
Fixed assets and intangibles	(451)	(447)
Right of use leased assets	(332)	(528)
Debt discount	(2,201)	(3,982)
Total deferred tax liabilities	(2,984)	(4,957)
Net deferred tax assets	$ 198	$ 21

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net loss	$ (62,746)	$ (984)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,219	1,106
Reserve for excess and obsolete inventory	23,108	713
Change in fair value of preferred stock warrant and contingent shares liability	(152)	(1,109)
Change in fair value of derivative liability		(12,247)
Non-cash interest expense	8,941	5,473
Stock-based compensation	7,721	3,808
Change in allowance for credit losses	(1,684)	3,870
Loss on debt extinguishment		171
Non-cash lease expense	1,122	996
Accretion of interest on marketable securities	(354)	(508)
Loss on disposal of property and equipment		17
Changes in operating assets and liabilities:
Accounts receivable	570	5,201
Inventory	16,296	(37,199)
Prepaid expenses and other assets	1,658	(1,293)
Accounts payable	(6,625)	(8,577)
Accrued expenses and other liabilities	(793)	3,383
Deferred revenue	368	(321)
Warranty liability	166	1,281
Operating lease liabilities	(1,169)	(1,003)
Net cash used in operating activities	(12,354)	(37,222)
Cash flows from investing activities:
Purchase of marketable securities	(10,976)	(53,483)
Acquisition of fSight		(16)
Purchase of intangible assets		(450)
Purchase of property and equipment	(1,286)	(2,114)
Sales and maturities of marketable securities	32,018	25,149
Net cash provided by (used in) investing activities	19,756	(30,914)
Cash flows from financing activities:
Proceeds from Convertible Promissory Note		50,000
Repayment of Series 2022-1 Notes		(20,833)
Payment of financing costs		(358)
Proceeds from Business Combination		2,238
Proceeds from exercise of stock options	272	215
Payment of tax withholdings on stock options	(122)	(91)
Payment of offering costs related to at-the-market offering	(227)
Proceeds from at-the-market offering	16
Proceeds from common stock warrant redemption, net of issuance costs and payments to warrant holders of non-redeemed warrants		3,653
Net cash (used in) provided by financing activities	(61)	34,824
Net increase (decrease) in cash	7,341	(33,312)
Cash and cash equivalents at beginning of period	4,405	37,717
Cash and cash equivalents at end of period	11,746	4,405
Supplemental disclosure of cash flow information:
Cash paid for interest	2,510	1,418
Cash paid for income taxes	575	95
Supplemental schedule of non-cash investing and financing activities:
Net assets acquired from Roth CH Acquisition IV Co.		573
Operating lease right of use assets obtained in exchange for operating lease liabilities	195	2,247
Property and equipment in accounts payable		693
Non-cash consideration paid for fSight acquisition	375	10,974
Contingent shares liability from fSight acquisition	0	2,167
Unrealized gain (loss) resulting from change in fair value of marketable securities	$ 61	(59)
Fair value of derivative note liability at issuance		23,525
Convertible preferred stock dividends (Note 3)		12,581
Dividends on Series D and Series E convertible preferred stock		12,581
Reclassification of deferred issuance costs to additional paid in capital		2,221
Conversion of convertible preferred stock into common stock in connection with the Business Combination (Note 3)		87,140
Issuance of preferred stock upon exercise of preferred warrants		2,008
Reclassification of convertible note derivative liability to equity		$ 11,278

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Convertible Promissory Note	$ 50,000	$ 50,000
Less: unamortized debt discount and issuance costs	(9,489)	(18,430)
Long-term debt, net of unamortized debt discount and issuance costs	$ 40,511	$ 31,570

- 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.

+ References

+ Details

Net Revenue (Tables)

12 Months Ended

Dec. 31, 2024

Revenues [Abstract]

Summary of Net Revenue by Major Geographic Region Based on Customers' Location

The following table summarizes net revenue by major geographic region, based on customers’ location (in millions):


	Year Ended December 31,
(in thousands)	2024		2023
EMEA(1)	$	32,593	$	109,301
Americas(2)		13,132		25,171
APAC		8,289		10,761
Total net revenue	$	54,014	$	145,233

(1)

Our net revenues generated from Germany and the Czech Republic represented 16.3% and 11.8% of our total net revenue for the year ended December 31, 2024, respectively.

(2)

Our net revenues generated from the United States represented 20.7% of our total net revenue for the year ended December 31, 2024.

Schedule of Summarizes the Changes in Deferred Revenue

The following table summarizes the changes in deferred revenue:


	Year Ended December 31,
(in thousands)	2024			2023
Balance at the beginning of the period	$	801		$	1,122
Deferral of revenue		7,585			30,370
Recognition of unearned revenue		(7,217	)		(30,691	)
Balance at the end of the period	$	1,169		$	801

Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value, Option, Quantitative Disclosures [Line Items]

Schedule of company's assets that are measured at fair value on a recurring basis

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis:


	Fair value measurement at reporting date using
(in thousands)	(Level 1)		(Level 2)		(Level 3)
December 31, 2024
Assets:
Cash equivalents:
Money market accounts	$	6,839	$	—	$	—
U.S. agency securities	$	—	$	499	$	—
Marketable securities:
Corporate bonds	$	—	$	2,018	$	—
U.S. agency securities	$	—	$	6,138	$	—
December 31, 2023
Assets:
Cash equivalents:
Money market accounts	$	1,646	$	—	$	—
Marketable securities:
Corporate bonds	$	—	$	19,489	$	—
U.S. agency securities	$	—	$	9,294	$	—
Liabilities:
Contingent shares liability from fSight acquisition	$	527	$	—	$	—

Schedule of changes in fair value of the company's marketable securities

The following is a summary of the changes in fair value of the Company’s marketable securities as of December 31, 2024, and 2023, respectively:


	As of December 31, 2024
(in thousands)	Amortized cost		Unrealized gain		Unrealized loss			Fair value
Available-for-sale marketable securities:
Current assets
Corporate bonds	$	2,019	$	—	$	(1	)	$	2,018
U.S. agency securities		6,135		3	$	—			6,138
Total available-for-sale marketable securities	$	8,154	$	3	$	(1	)	$	8,156

As of December 31, 2024, all available-for-sale marketable securities consisted of investments that mature within one year.


	As of December 31, 2023
(in thousands)	Amortized cost		Unrealized gain		Unrealized loss			Fair value
Available-for-sale marketable securities:
Current assets
Corporate bonds	$	17,561	$	2	$	(52	)	$	17,511
U.S. agency securities		9,300		2	$	(7	)		9,295
Total		26,861		4		(59	)		26,806
Long-term assets
Corporate bonds		1,981		3		(7	)		1,977
Total		1,981		3		(7	)		1,977

Total available-for-sale marketable securities	$	28,842	$	7	$	(66	)	$	28,783

Schedule of changes in fair value of the company's preferred stock warrant liability

he table presented below is a summary of the changes in fair value of the Company’s preferred stock warrant liability which was exercised immediately prior to the Business Combination into Legacy Tigo preferred stock and subsequently converted into Legacy Tigo common stock. Upon the consummation of the Business Combination, such shares of Legacy Tigo common stock were converted to shares of common stock. Please see Note 3, “Merger with ROTH CH Acquisition IV Co.” for additional information.


(in thousands)	Fair value of preferred stock warrant liability
Balance at December 31, 2022		1,507
Change in fair value		501
Exercise of warrants		(2,008	)
Balance at December 31, 2023	$	—

Schedule of changes in fair value of Level 3 financial instruments

The table presented below is a summary of the changes in fair value of the Company’s Level 3 financial instruments.


(in thousands)	Fair value of contingent shares from fSight acquisition			Fair value of derivative liability
Balance at December 31, 2022	$	—		$	—
Fair value at inception		2,167			23,525
Change in fair value		29			(12,247	)
Transfer out of level 3		(2,196	)		(11,278	)
Balance at December 31, 2023	$	—		$	—

Warrant Liabilities

Fair Value, Option, Quantitative Disclosures [Line Items]

Schedule of fair value of the warrant and derivative liabilities is estimated using the Black-Scholes option pricing model

The fair value of the warrant liabilities was estimated using the Black-Scholes option pricing model using the following assumptions:


	May 23, 2023 (Merger Date)
Expected volatility	68% - 70%
Risk-free interest rate	4.10% - 4.28%
Expected term (in years)	2.0 - 2.6
Expected dividend yield		—
Fair value of Series C convertible preferred stock	$	1.89

Derivative Liability

Fair Value, Option, Quantitative Disclosures [Line Items]

Schedule of fair value of the warrant and derivative liabilities is estimated using the Black-Scholes option pricing model

The fair value of the convertible note derivative liability was estimated using the Black-Scholes option pricing model using the following assumptions:


	As of September 24, 2023 (1)
Expected volatility		58.6	%
Risk-free interest rate		4.9	%
Expected term (in years)		2.3
Expected dividend yield		—

(1)

The fair value of the convertible note derivative liability was remeasured on September 24, 2023, immediately prior to the execution of the Convertible Note Amendment.

- Definition

Tabular disclosure of all significant concentrations of risk, including credit risk and market risk, arising from all financial instruments (as defined), whether from an individual counterparty or groups of counterparties. The disclosure concerning concentrations of risk may consist of the following information: (1) for concentrations of credit risk disclosure may include: (a) information about the (shared) activity, region, or economic characteristic that identifies the concentration, (b) the maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity, (c) the policy of requiring collateral or other security to support financial instruments subject to credit risk, information about the entity's access to that collateral or other security, and the nature and a brief description of the collateral or other security supporting those financial instruments, and (d) the policy of entering into master netting arrangements to mitigate the credit risk of financial instruments, information about the arrangements for which the entity is a party, and a brief description of the terms of those arrangements, including the extent to which they would reduce the entity's maximum amount of loss due to credit risk and (2) for disclosure of quantitative information about the market risks of financial instruments that is consistent with the way the company manages or adjusts those risks, disclosure may include: (a) more details about current positions and perhaps activity during the period, (b) the hypothetical effects on comprehensive income (or net assets), or annual income, of several possible changes in market prices, (c) a gap analysis of interest rate re-pricing or maturity dates, (d) the duration of the financial instruments, (e) the entity's value at risk from derivatives and from other positions at the end of the reporting period and the average value at risk during the year, or (f) other ways of reporting quantitative information as internally developed.

+ References + Details

Supplementary Balance Sheet and Geographic Information

12 Months Ended

Dec. 31, 2024

Disclosure Text Block Supplement [Abstract]

Supplementary Balance Sheet and Geographic Information

Selected financial data as of the dates presented below is as follows (in thousands, except useful life data):


Inventory, net	December 31, 2024		December 31, 2023
Raw materials	$	662	$	668
Finished goods		21,335		60,733
Inventory, net	$	21,997	$	61,401

The inventory reserves were $24.1 million and $1.0 million as of December 31, 2024, and 2023, respectively. The Company recorded inventory charges of $23.5 million during the year ended December 31, 2024. Inventory charges were recorded to reflect anticipated net realizable value on disposition of existing inventory assets. These charges are primarily for excess and slow-moving inventory within the GO ESS line of energy storage solutions.


Property and equipment, net	Estimated Useful Life	December 31, 2024		December 31, 2023
Machinery and equipment	7 years	$	6,051	$	5,810
Vehicles	5 years		31		31
Computer software	5 years		212		192
Computer equipment	5 years		602		574
Furniture and fixtures	5 years		216		216
Leasehold improvements	3 - 6 years		465		457
			7,577		7,280
Less: Accumulated depreciation			4,765		3,822
Property and equipment, net		$	2,812	$	3,458

For the years ended December 31, 2024, and 2023 the Company recorded depreciation expense of $0.9 million in the consolidated statements of operations.


Accrued expenses and other current liabilities	December 31, 2024		December 31, 2023
Accrued vacation	$	924	$	856
Accrued compensation		1,119		2,514
Accrued interest		1,187		1,222
Accrued professional fees		894		409
Accrued warehouse and freight		917		1,001
Accrued other(1)		1,773		1,974
Other current liabilities(2)		547		705
Accrued expenses and other current liabilities	$	7,361	$	8,681

(1)

Accrued other as of December 31, 2024, and December 31, 2023, primarily consist of accrued expenses related to legal expense, insurance expense and sales discounts.

(2)

Long-lived assets by Geographic Region

The following table presents the Company’s long-lived assets, which consist of tangible property and equipment, net of depreciation, and operating ROU assets, by geographic region (in thousands):


Long-lived assets	December 31, 2024		December 31, 2023
EMEA(1)	$	1,545	$	1,770
Americas(2)		719		1,384
APAC(3)		2,124		2,807
Total long-lived assets	$	4,388	$	5,961

(1)

As of December 31, 2024, 26.6% of the Company’s total long-lived assets were located in Israel.

(2)

As of December 31, 2024, 16.4% of the Company's total long-lived assets were located in the U.S.

(3)

As of December 31, 2024, 35.5% and 13.0% of the Company's total long-lived assets were located in Thailand and China, respectively.

Net Revenue - Summary of Net Revenue by Major Geographic Region Based on Customers' Location (Parenthetical) (Details) - Major Geographic Region - Net Revenues	12 Months Ended
	Dec. 31, 2024
Germany
Disaggregation of Revenue [Line Items]
Concentration risk percentage	16.30%
Czech Republic
Disaggregation of Revenue [Line Items]
Concentration risk percentage	11.80%
United States
Disaggregation of Revenue [Line Items]
Concentration risk percentage	20.70%

- 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.

+ References + Details

Fair Value of Financial Instruments (Details) $ in Millions	Dec. 31, 2024 USD ($)
Fair Value Disclosures [Abstract]
Fair value	$ 44.0
Carrying value	$ 40.5

Stock-Based Compensation

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

12.

Stock-Based Compensation

The Company adopted the 2008 Stock Plan (“2008 Plan”) under which it may issue stock options to purchase shares of common stock, and award restricted stock and stock appreciation rights to employees, Directors and consultants. The 2008 Plan expired in March 2018 and all award issuance therefore ceased. Options generally vest over a four-year period with a one-year cliff. The option term is no longer than five years for incentive stock options for which the grantee owns greater than 10% of the Company’s capital stock and no longer than 10 years for all other options. The Company has a repurchase option on unvested restricted stock exercisable upon the voluntary or involuntary termination of the purchaser’s employment with the Company for any reason. The Company’s repurchase right lapses in accordance with the vesting terms. Options outstanding under the 2008 Plan will remain outstanding until they are exercised, canceled or expire.

In May 2018, the Company adopted the 2018 Stock Plan (“2018 Plan”) under which the Company may issue stock options to purchase shares of common stock, and award restricted stock and stock appreciation rights to employees, Directors and consultants.

Under the 2018 Plan, the Board of Directors may grant incentive stock options or nonqualified stock options. Incentive stock options may only be granted to Company employees. The 2018 Plan expired in May 2023 and all award issuance therefore ceased. The exercise price of incentive stock options and non-qualified stock options cannot be less than 100% of the fair value per share of the Company’s common stock on the grant date. If an individual owns more than 10% of the Company’s outstanding capital stock, the price of each share incentive stock option will be at least 110% of the fair value. Fair value was determined by the Board of Directors. Options generally vest over a four-year period with a one-year cliff. The option term is no longer than five years for incentive stock options for which the grantee owns greater than 10% of the Company’s capital stock and no longer than 10 years for all other options. The Company has a repurchase option on unvested restricted stock exercisable upon the voluntary or involuntary termination of the purchaser’s employment with the Company for any reason. The Company’s repurchase right lapses in accordance with the vesting terms. Options outstanding under the 2018 Plan will remain outstanding until they are exercised, canceled or expire.

In May 2023, the Company adopted the 2023 Equity Incentive Plan (“2023 Plan”) under which the Company may issue stock options to purchase shares of common stock, award restricted stock, restricted stock units (“RSU”), performance stock units (“PSUs”), dividend equivalents, stock appreciation rights, and other stock-based or cash-based awards to employees, Directors and consultants.

Stock options granted to newly hired employees generally vest over a four-year period, following the date of grant, with 25% vesting on the first anniversary of the grant date and the remaining vesting in equal monthly installments thereafter, and grants of additional stock options to employees generally vest in equal monthly installments over a four-year period with no cliff vesting. As of December 31, 2024, 557,959 stock options granted under the 2023 Plan had vested and were exercisable. There have been no stock options exercised under the 2023 Plan. The RSUs generally vest over a three-year period, following the date of grant, with a third of the award vesting on each year on the annual anniversary of the grant date.

Collectively, the 2008 Stock Plan, 2018 Stock Plan and the 2023 Equity Incentive Plan are referred to as “the Plans”.

The Company measures stock-based awards at their grant-date fair value and records compensation expense on a straight-line basis over the vesting period of the awards. The Company also measures the PSU awards at their grant-date fair value. If the performance goals are not met, no compensation expense is recognized and any recognized compensation expense is reversed. The Company recorded stock-based compensation expense in the following expense categories in its accompanying condensed consolidated statements of operations and comprehensive loss:


	Year Ended December 31,
(in thousands)	2024		2023
Cost of sales	$	141	$	125
Research and development		1,231		648
Sales and marketing		2,104		1,387
General and administrative		4,245		1,648
Total stock-based compensation(1)	$	7,721	$	3,808

(1)

Option Exchange Program

On November 12, 2024, the Company commenced an offer to certain eligible employees and directors the opportunity to exchange certain outstanding options to purchase shares of common stock, for new options (“Replacement Options”) to purchase a number of shares of our common stock (the “Option Exchange”). The Option Exchange expired at 11:59 P.M. Eastern Time on December 10, 2024. Pursuant to the terms and conditions of the Option Exchange, the Company accepted for exchange eligible options to purchase an aggregate of 725,028 shares of common stock, representing approximately 96.6% of the total shares of common stock underlying such eligible options. All surrendered options were cancelled effective as of the expiration of the Option Exchange. Effective promptly following the expiration of the Option Exchange, the Company granted Replacement Options to purchase an aggregate of 181,107 shares of common stock under the 2023 Equity Incentive Plan.

The Company will not incur additional stock-based compensation expense as a result of the Option Exchange.

Stock Options

The following table summarizes stock option activity for the Plans for the year ended December 31, 2024:


	Number of shares			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in 000’s)
Outstanding at December 31, 2023		4,872,527		$	3.64		6.10
Granted		2,786,951		$	1.49
Exercised		(789,097	)	$	0.34
Forfeited/expired		(1,467,291	)	$	8.31
Outstanding at December 31, 2024		5,403,090		$	1.74		7.18	$	581
Exercisable at December 31, 2024		2,630,187		$	1.63		4.83	$	568

As of December 31, 2024, the total unrecognized compensation expense related to unvested stock option awards was $6.9 million, which the Company expects to recognize over a weighted-average period of 2.9 years.

The fair value of options is estimated using the Black-Scholes option pricing model, which takes into account inputs such as the exercise price, the value of the underlying common stock at the grant date, expected term, expected volatility, risk-free interest rate and dividend yield. The fair value of each grant of options was determined using the methods and assumptions discussed below.

•

The expected term of employee options with service-based vesting is determined using the “simplified” method, as prescribed in the U.S. Securities and Exchange Commission’s Staff Accounting Bulletin (“SAB”) No. 107, whereby the expected life equals the arithmetic average of the vesting term and the original contractual term of the option due to the Company’s lack of sufficient historical data. The expected term of non-employee options is equal to the contractual term.

•

The expected volatility is based on historical volatilities of similar entities within the Company’s industry which were commensurate with the expected term assumption as described in SAB No. 107.

•

The risk-free interest rate is based on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the assumed expected term.

•

The expected dividend yield is 0% because the Company has not historically paid and does not expect for the foreseeable future to pay a dividend on its common stock.

•

As the Company’s common stock has not historically been publicly traded, its Board of Directors periodically estimated the fair value of the Company’s common stock considering, among other things, contemporaneous valuations of its common stock prepared by an unrelated third-party valuation firm in accordance with the guidance provided by the American Institute of Certified Public Accountants 2013 Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation.

The fair value of each stock option was estimated on the date of grant using the weighted-average assumptions in the table below:


	December 31, 2024			December 31, 2023
Expected volatility		72.4	%		68.1	%
Risk-free interest rate		3.5	%		4.1	%
Expected term (in years)		6.0			6.0
Expected dividend yield		—	%		—	%

Restricted Stock Units

The following table summarizes RSU activity for the 2023 Plan for the year ended December 31, 2024:


	Number of shares			Weighted average grant date fair value per share
Outstanding at December 31, 2023		872,037		$	11.27
Granted		2,557,692		$	1.40
Vested		(1,088,384	)	$	4.18
Forfeited/expired		(237,399	)	$	6.26
Outstanding at December 31, 2024		2,103,946		$	3.50

As of December 31, 2024, the total unrecognized compensation expense related to unvested RSUs was $5.7 million, which the Company expects to recognize over a weighted-average period of 1.8 years.

Performance Stock Units

The PSUs vest over a three-year period beginning on January 1, 2025, with one-third of the award eligible to vest at the end of each fiscal year through December 31, 2027, based on the Company’s level of achievement of certain performance-based criteria tied to annual net revenue and adjusted EBITDA targets. The PSUs were valued using the market value of the Company’s common stock at the closing market price on the grant date.

The following table summarizes the PSU activity for the 2023 Plan for the year ended December 31, 2024:


	Number of shares			Weighted average grant date fair value per share
Outstanding at December 31, 2023		—		$	—
Granted		1,940,602		$	1.58
Vested		—		$	—
Forfeited		(180,554	)	$	1.60
Outstanding at December 31, 2024		1,760,048		$	1.58

As of December 31, 2024, the Company did not believe it was probable that the performance criteria associated with the PSUs would be achieved. Accordingly, no compensation expense has been recognized for these awards, and there is no unrecognized compensation cost associated with these awards. The Company will reassess the probability of achieving the performance conditions at each reporting date.

Acquisition of Foresight Energy, Ltd. - Summary of Supplemental Pro Forma Information (Details) - fSight [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Net revenue	$ 145,301
Net loss	$ (1,130)

Stock-Based Compensation - Schedule of condensed consolidated statements of operations and comprehensive income (loss) (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Total stock-based compensation

^[1]

$ 7,721

$ 3,808

Cost of Sales

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Total stock-based compensation

141

125

Research and Development

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Total stock-based compensation

1,231

648

Sales and Marketing

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Total stock-based compensation

2,104

1,387

General and Administrative

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Total stock-based compensation

$ 4,245

$ 1,648

[1]

- 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.

+ References

+ Details

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Net Revenue

12 Months Ended

Dec. 31, 2024

Revenues [Abstract]

Net Revenue

Geographic Revenues

The Company sells its products in the Americas (North and South America), EMEA (Europe, Middle East, and Africa), and APAC (Asia-Pacific) regions.

The following table summarizes net revenue by major geographic region, based on customers’ location (in millions):


	Year Ended December 31,
(in thousands)	2024		2023
EMEA(1)	$	32,593	$	109,301
Americas(2)		13,132		25,171
APAC		8,289		10,761
Total net revenue	$	54,014	$	145,233

(1)

Our net revenues generated from Germany and the Czech Republic represented 16.3% and 11.8% of our total net revenue for the year ended December 31, 2024, respectively.

(2)

Our net revenues generated from the United States represented 20.7% of our total net revenue for the year ended December 31, 2024.

Deferred Revenue

The following table summarizes the changes in deferred revenue:


	Year Ended December 31,
(in thousands)	2024			2023
Balance at the beginning of the period	$	801		$	1,122
Deferral of revenue		7,585			30,370
Recognition of unearned revenue		(7,217	)		(30,691	)
Balance at the end of the period	$	1,169		$	801

As of December 31, 2024, the Company expects to recognize $1.1 million from remaining performance obligations over a weighted-average term of 3.6 years. The Company recognized approximately $1.0 million and $0.9 million in revenue that was included in the beginning deferred revenue balance during the years ended December 31, 2024, and 2023, respectively.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Supplementary Balance Sheet and Geographic Information - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,577	$ 7,280
Less: Accumulated depreciation	4,765	3,822
Property and equipment, net	$ 2,812	3,458
Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	7 years
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 6,051	5,810
Estimated Useful Life	7 years
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 31	31
Estimated Useful Life	5 years
Computer Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 212	192
Estimated Useful Life	5 years
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 602	574
Estimated Useful Life	5 years
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 216	216
Estimated Useful Life	5 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 465	$ 457
Leasehold Improvements \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Leasehold Improvements \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	6 years

Leases - Schedule of Future Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
2025	$ 742
2026	473
2027	366
2028	136
2029	8
Thereafter	0
Total	1,725
Less: imputed interest	115
Present value of lease liabilities	$ 1,610

Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Current taxes:
Foreign	$ 284	$ 159
Total current taxes	284	159
Deferred taxes:
Foreign	(181)	(21)
Total deferred taxes	(181)	(21)
Provision for income taxes	$ 103	$ 138

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Supplementary Balance Sheet and Geographic Information - Schedule of Long-Lived Assets by Geographical Areas (Parenthetical) (Details)	Dec. 31, 2024
Israel
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of total long-lived assets	26.60%
U.S
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of total long-lived assets	16.40%
Thailand
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of total long-lived assets	35.50%
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of total long-lived assets	13.00%

Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2024

Earnings Per Share [Abstract]

Summary of Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share to common stockholders:


	Year Ended December 31,
(in thousands, except share and per share data)	2024			2023
Basic net loss per common share calculation:
Net loss attributable to common stockholders	$	(62,746	)	$	(4,383	)
Undistributed loss to preferred stock stockholders		—			1,418
Net loss attributable to common stockholders – basic	$	(62,746	)	$	(2,965	)
Weighted-average shares of common stock outstanding – basic		60,263,190			38,048,516
Net loss per share of common stock – basic	$	(1.04	)	$	(0.08	)

Diluted net loss per common share calculation:
Net loss attributable to common stockholders	$	(62,746	)	$	(4,383	)
Reverse: interest expense and change in fair value on derivative liability		—			(4,322	)
Net loss attributable to common stockholders		(62,746	)		(8,705	)
Undistributed loss to preferred stock stockholders		—			2,817
Net loss attributable to common stockholders – diluted	$	(62,746	)	$	(5,888	)
Weighted-average shares of common stock outstanding – basic		60,263,190			38,048,516
Convertible promissory note		—			5,174,618
Weighted-average shares of common stock – diluted		60,263,190			43,223,134
Net loss per share of common stock – diluted	$	(1.04	)	$	(0.14	)

Summary of Potentially Dilutive Securities Excluded from Computation of Diluted Weighted-Average Shares of Common Stock Outstanding

The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive:


	As of December 31,
	2024		2023
Outstanding stock options and restricted stock units		4,673,638		3,470,172
Convertible preferred stock warrants		—		580,729
Common stock warrants		—		75,305
Convertible promissory note		5,305,861		—
		9,979,499		4,126,206