Item 8.01 Other Events.

On July 25, 2024, TortoiseEcofin Acquisition Corp. III (the "Company") received a letter from One Energy Enterprises Inc., a Delaware corporation ("One Energy"), purporting to unilaterally terminate the Amended and Restated Business Combination Agreement (as may be amended, restated or supplemented from time to time, the "Business Combination Agreement"), which was entered into on February 14, 2024, by and among the Company, One Energy and the other parties thereto. The Company has responded to One Energy's letter disputing One Energy's ability to terminate the contemplated transactions under the terms of the Business Combination Agreement, which, in the Company's view, remains in effect as of the date of this current report. The Company is exploring all of its legal options.