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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13D/A 0001140361-24-050502 0002047012 XXXXXXXX LIVE 2 Common Stock, par value $0.01 12/10/2025 false 0001992243 35834F104 T1 Energy Inc. 1211 E. 4th Street Austin TX 78702 Catherine Pan-Giordano Esq. (212) 415-9200 51 W. 52nd Street New York NY 10019 Anthony Epps Esq. (303) 352-1109 1400 Wewatta Street Denver CO 80202 0002047012 N Trina Solar (Schweiz) AG OO V8 45877960 0 45877960 0 45877960 N 17.4 CO ITEM 13 Calculated based on 262,940,963 shares of common stock of the Issuer outstanding as of December 18, 2025. Common Stock, par value $0.01 T1 Energy Inc. 1211 E. 4th Street Austin TX 78702 Trina Solar (Schweiz) AG ("Reporting Person") Birkenweg 4 Wallisellen, Switzerland 8304 The Reporting Person is engaged in the business of investment. N/A - None N/A - None Switzerland OO Item 4 of the Schedule 13D filed by the Reporting Person on December 27, 2024 (the "Schedule 13D"), is incorporated by reference herein. On September 5, 2025, the Reporting Person and the Issuer completed the First Conversion (as defined in the Schedule 13D), and the Reporting Person received 12,521,653 shares of common stock of the Issuer on the same date. On December 10, 2025, the Reporting Person and the Issuer completed the Second Conversion (as defined in the Transaction Agreement which was incorporated by reference as an exhibit to the Schedule 13D), and the Reporting Person received 17,918,460 shares of common stock of the Issuer on the same date. 17.4% 45,877,960 Second Conversion (as defined in the Transaction Agreement which was incorporated by reference as an exhibit to the Schedule 13D) by the Reporting Person and issuance of 17,918,460 shares of common stock of the Issuer to the Reporting Person as a result of the Second Conversion. N/A N/A N/A N/A Trina Solar (Schweiz) AG /a/ Vincenzo Costanzelli Chairman of Board of Directors 12/22/2025