Ecofin U.S. Renewables Infrastructure Trust PLC

31 December 2025

For immediate release.

Ecofin U.S. Renewables Infrastructure Trust PLC (the "Company")

Completion of Disposal of Whirlwind

Further to the Proposal for Disposal of Whirlwind announcement made on 31 October 2025 (the "Disposal Announcement"), the Board of the Company is pleased to announce that definitive agreements on the Proposal have been executed on 30 December 2025 with completion of the sale of Whirlwind occurring simultaneously to Buho Infrastructure, LLC (the "Buyer" and the "Disposal").

The key terms of the Disposal, which is within the scope of the Company's existing published Investment Policy, are substantially consistent with those set out in the Disposal Announcement. More particularly net closing payment payable to TC Renewable Holdco VII, LLC (an indirect wholly-owned subsidiary of the Company) by Buyer was approximately US$12 million. An additional amount of US$11 million is to be held in escrow for a period of up to 11 months pending the resolution of the interconnection stability curtailment issue, with the potential for additional payments of up to US$7 million based upon repowerings that may be conducted by the Buyer, in each case based upon the terms set out in the Disposal Announcement. Defined terms used in this announcement shall, unless the context requires otherwise, have the meanings ascribed to them in the Disposal Announcement.

Marathon Capital Markets, LLC is acting as financial advisor to the Company in connection with the Disposal.

Enquiries

IMPORTANT NOTICES

Financial adviser

Marathon Capital Markets, LLC (Marathon) which is registered with the U.S. Securities and Exchange Commission and regulated by the Financial Industry Regulatory Authority in the United States, has acted as financial adviser to the Company and for no one else in connection with the matters set out in this announcement and is not, and will not be, responsible to anyone other than the Company for providing the protections afforded to clients nor for providing advice in connection with the matters set out in this announcement.

Neither Marathon nor any persons associated or affiliated with it accepts any responsibility whatsoever or makes any representation or warranty, express or implied, concerning the contents of this announcement, including its accuracy, completeness or verification, or concerning any other statement, made or purported to be made by it or them, or on its or their behalf, the Company or the directors in connection with the Company or the Disposal, and nothing in this announcement is, or shall be relied upon as, a promise or representation in this respect, whether as to the past or future.  Marathon and its respective associates and affiliates accordingly disclaim, to the fullest extent permitted by law, all and any responsibility and liability whether arising in tort, contract or otherwise which it or they might otherwise have in respect of this announcement or any such statement.

General

This announcement is not a prospectus and is not intended to, and does not, constitute or form part of any offer, invitation or the solicitation of an offer to purchase, otherwise acquire, subscribe for, sell or otherwise dispose of, or issue any securities whether pursuant to this announcement or otherwise.

The release, publication or distribution of this announcement in jurisdictions outside the United Kingdom may be restricted by laws of the relevant jurisdictions and therefore persons into whose possession this announcement comes should inform themselves about, and observe, such restrictions. Any failure to comply with the restrictions may constitute a violation of the securities law or any such jurisdiction.

Presentation of financial information

References to "US$" are to the lawful currency of the United States.

Certain financial data has been rounded, and, as a result of this rounding, the totals of data presented in this announcement may vary slightly from the actual arithmetic totals of such data.

LEI Number

The Company's LEI Number is 2138004JUQUL9VKQWD21

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