Exhibit 10.1
SUBSCRIPTION AGREEMENT
THIS SUBSCRIPTION AGREEMENT (this Agreement) is made and entered into effectively as of June 6, 2024 (the
Effective Date), by, between and among (the Investor), TortoiseEcofin Acquisition Corp. III, a Cayman Island exempted company (SPAC), TortoiseEcofin Sponsor
III LLC, a Cayman Island limited liability company (Sponsor), and One Energy Enterprises Inc., a Delaware corporation (Target). Investor, SPAC, Sponsor, and Target are referred to in this Agreement individually
as a Party and collectively as the Parties.
WHEREAS, SPAC is a special purpose acquisition company
that closed on its initial public offering on July 19, 2021, with 24 months to complete an initial business combination (the De-SPAC).
WHEREAS, on August 14, 2023 SPAC entered into a Business Combination Agreement with TRTL III Merger Sub Inc., a Delaware corporation and
a wholly-owned subsidiary of SPAC and Target, which Business Combination Agreement was amended and restated on February 14, 2024, and amended again on May 13, 2024 (collectively, the Business Combination), with such
Business Combination, a De-SPAC for the purposes of this Agreement. In connection with the Business Combination, SPAC will domesticate as a Delaware corporation and all of the outstanding Class A Ordinary
Shares of SPAC shall be converted into Class A Common Stock. For the purpose of distinguishing the surviving public company post De-SPAC, the surviving public company shall also be referred to as the
PubCo;
WHEREAS, in connection with the Business Combination all of the outstanding Class A ordinary shares of SPAC
(each, a Class A Ordinary Share) shall be converted into shares of common stock of Pubco (Class A Common Stock);
WHEREAS, the SPAC held a Special Meeting on October 19, 2023 during which the SPACs shareholders approved a proposal to further
extend the date by which the SPAC has to consummate a business combination for six (6) additional one (1) month periods (the Extension 1), from October 22, 2023 to April 22, 2024 (Renewal
Period). For each one month extension (Partial Renewal Period), Sponsor will deposit into the Trust Account $0.015 per share for each public share that was not redeemed;
WHEREAS, the SPAC held a Special Meeting on April 19, 2024 during which the SPACs shareholders approved a proposal to further
extend the date by which the SPAC has to consummate a business combination from April 22, 2024 through October 22, 2024 (Extension 2). For each one month extension (Partial Renewal Period), Sponsor
will deposit into the Trust Account $0.02 per share for each public share that was not redeemed
WHEREAS, as of the date of this
Agreement, SPAC has not completed the De-SPAC;
WHEREAS, Sponsor is seeking to raise funds from
existing SPAC investors which will in turn be loaned by the Sponsor to the SPAC to cover working capital expenses and to fund Extension 1 and Extension 2 (SPAC Loan);
WHEREAS, pursuant to the terms and conditions of this Agreement, Investor has agreed to fund $ to Sponsor (the
Capital Contribution), and in consideration of the Capital Contribution, PubCo as successor to the SPAC shall issue the Subscription Shares to Investor as contemplated by Section 1.2, below;
WHEREAS, SPAC will pay all principal under the SPAC Loan to Sponsor at the closing of the De-SPAC
transaction (the De-SPAC Closing), in accordance with Article 1 below, and the Investor will be entitled to receive from the Sponsor an amount equal to the Capital Contribution as a return
of capital;