v3.26.1
SAFE Agreement (Details) - USD ($)
$ in Millions
 6 Months Ended
Apr. 23, 2026
Apr. 08, 2026
Sep. 16, 2024
May 13, 2024
Jun. 28, 2026
Aug. 04, 2026
Dec. 28, 2025
SAFE Agreement [Line Items]              
Fair value liabilities           $ 10.0
Principal amount SAFE converted   $ 5.0          
Percentage of SAFE converted     7.00%        
Subsequent Event [Member]              
SAFE Agreement [Line Items]              
Investment amount           $ 3.5  
Convertible Secured Notes [Member]              
SAFE Agreement [Line Items]              
Principal amount SAFE converted $ 5.0            
Percentage of SAFE converted 10.00%            
Third SAFE [Member]              
SAFE Agreement [Line Items]              
Description of simple agreement for future equity terms and conditions       Third SAFE On May 13, 2024, the Company entered into a third SAFE (the “Third SAFE”) with the Rodgers Massey Freedom and Free Markets Charitable Trust (the “Purchaser”), in connection with the Purchaser investing $1.0 million in the Company. The Third SAFE is convertible into shares of the Company’s common stock upon the initial closing of a bona fide transaction or series of transactions with the principal purpose of raising capital, pursuant to which the Company issues and sells shares of its common stock in an Equity Financing, at a per share conversion price which is equal to 50% of the price per share of the Company’s common stock sold in the Equity Financing. If the Company consummates a change of control prior to the termination of the Third SAFE, the Purchaser will be automatically entitled to receive a portion of the proceeds of such liquidity event equal to $1.0 million, subject to certain adjustments as set forth in the Third SAFE. The Third SAFE is convertible into a maximum of 2,750,000 shares of the Company’s common stock, assuming a per share conversion price of $0.275, which is the product of (i) $0.55, the closing price of the Company’s common stock on May 13, 2024, multiplied by (ii) 50%. Given that the SAFE could be settled in cash or a variable number of shares, the Company has accounted for the instrument as a liability at its fair value. On April 23, 2026, the Third SAFE was converted and exchanged into an aggregate of $1.0 million principal amount of the Company’s 10.0% convertible senior secured notes due 2029. The conversion was accounted for as a debt extinguishment, and the carrying amounts of the SAFEs were derecognized against the fair value of the newly issued notes. No gain or loss was recognized on the transaction. Refer to Note 9 – Borrowings and Derivative Liabilities for details.      
Fourth SAFE [Member]              
SAFE Agreement [Line Items]              
Description of simple agreement for future equity terms and conditions         Fourth SAFE On April 8, 2026, the Company entered into a SAFE (the “Fourth SAFE”) with the Rodgers Revocable Trust in exchange for the $5.0 million. The Fourth SAFE is automatically convertible into equity securities of the Company in an amount equal to the Purchase Amount divided by the applicable price per share, unit or other increment of the equity securities issued by the Company in its next equity financing transaction.On April 23, 2026, the Fourth SAFE was converted and exchanged into an aggregate of $5.0 million principal amount of the Company’s 10.0% convertible senior secured notes due 2029. The conversion was accounted for as a debt extinguishment, and the carrying amounts of the SAFEs were derecognized against the fair value of the newly issued notes. No gain or loss was recognized on the transaction. Refer to Note 9 – Borrowings and Derivative Liabilities for details.On August 4, 2026, SunPower Inc. entered in a SAFE (“Fifth SAFE”) with an institutional investor in connection with its investment of $3.5 million in the Company. Refer to Note 18 – Subsequent Events for details.