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Debt | 6 Months Ended
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Jun. 30, 2026
Debt Disclosure [Abstract] |
Debt | 7. Debt Revolving Credit Facility On March 31, 2026, the Company entered into a revolving credit facility (the “Credit Facility”) with Wells Fargo Bank, National Association, as lender, pursuant to which the Company may borrow up to $10.0 million, subject to a borrowing base. Tigo Energy MergeCo, Inc., a wholly owned subsidiary of the Company, is the guarantor of the Company’s obligations under the Credit Facility. The Credit Facility matures on March 31, 2029. As of June 30, 2026, the Company had $4.1 million outstanding under the Credit Facility, which is classified as long-term debt on the condensed consolidated balance sheet. Borrowings under the Credit Facility bear interest at a rate equal to the secured overnight financing rate, as administered by the Federal Reserve Bank of New York, plus an applicable margin of 1.75% to 2.00%, based on monthly average excess availability. The interest rate for the Credit Facility as of June 30, 2026 was 5.4%. Available borrowings under the Credit Facility may not exceed the borrowing base, which is determined based on specified percentages of eligible accounts receivable and eligible inventory, in each case subject to customary reserves, eligibility criteria and other adjustments. The occurrence of an event of default under the Credit Facility could result in the termination of the commitments under the Credit Facility and the acceleration of all outstanding borrowings under the Credit Facility. The terms of the Credit Facility require the Company to maintain a minimum level of liquidity at all times, which is tested on a monthly basis. As of June 30, 2026, the Company was in compliance with all applicable covenants under the Credit Facility. In connection with entering into the Credit Facility, the Company incurred debt issuance costs of $0.5 million. As the Credit Facility is a revolving-debt arrangement, these costs are presented as an asset within other assets on the condensed consolidated balance sheets, rather than as a direct deduction from the carrying amount of the outstanding borrowings. The deferred costs are amortized on a straight-line basis to interest expense over the term of the Credit Facility, regardless of the amount of borrowings outstanding. As of June 30, 2026, unamortized debt issuance costs of $0.4 million were included in other assets in the condensed consolidated balance sheets. Convertible Promissory Notes and Debt Extinguishment 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 5.00% per year. The principal amount was due at the maturity date of January 9, 2026, and interest is payable semiannually beginning in July 2023. On December 17, 2025, the Company extinguished the Convertible Promissory Notes by paying $51.3 million in cash which included principal, accrued interest and fees associated with the extinguishment. The reacquisition price of the debt was higher than the related carrying value at the extinguishment date, therefore resulting in a loss on extinguishment of Convertible Promissory Notes of $1.1 million in the fourth quarter of 2025. The Company had no outstanding debt as of December 31, 2025.

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 470 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/470/tableOfContent + Details
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