External Investment into EnviroCopper Limited

This announcement contains inside information for the purposes of Article 7 of the UK version of Regulation (EU) No 596/2014 which is part of UK law by virtue of the European Union (Withdrawal) Act 2018, as amended ("MAR"). Upon the publication of this announcement via a Regulatory Information Service, this inside information is now considered to be in the public domain.

27 October 2025

Thor Energy PLC

("Thor" or the "Company")

External Investment of A$3.5m into EnviroCopper Limited and its South Australian ISR Copper Projects

Agreement for Future Equity and Collaboration Signed

Thor Energy plc (AIM, ASX: THR, OTCQB: THORF) is pleased to report the signing of an agreement for Future Equity and Collaboration ("the Agreement") between private company EnviroCopper Limited ("ECL"), in which Thor is the largest individual shareholder at just over 24%, and an international company ("the Investor"). The Investor has agreed to invest A$3.5m into ECL's ISR (in-situ recovery) technology and its Kapunda and Alford copper projects in South Australia.

Highlights:

·    Investor to fund A$3.5m to collaborate on ECL's projects and ISR technologies.

·    Investor may elect to convert the A$3.5m investment into 972,222 shares in ECL at A$3.60 per share.

·    Thor owns 1,157,143 shares in ECL.

Alastair Clayton, Chairman, commented:

"We are delighted to report that the investee company ECL has attracted a significant investment and formed a collaborative partnership with a large international company that has requested, for commercial reasons, to stay unnamed for the time being. This agreement gives me great optimism about the future value of our investment. We look forward to reporting on ECL's progress at the Kapunda and Alford ISR Copper projects in South Australia."

About EnviroCopper Limited

ECL was established in 2017 and is a copper ISR specialist focused on its Kapunda and Alford West ISR projects in South Australia. ECL's specialist team has significant experience in copper ISR technology development. Through collaboration with leading universities and research institutions under a Commonwealth Government CRC-P Research grant in 2018, ECL is achieving successful outcomes in ISR mining study economics, environmental mitigation and community acceptance of this extension to existing ISR technology.

For more information, please see: https://www.envirocopper.com.au/

Corporate Focus Remains on HY-Range

Whilst looking to monetise much of our legacy portfolio, the corporate focus of Thor Energy remains on its HY-Range natural hydrogen and helium project in South Australia. The transaction represents a means by which Thor can monetise the value of its interest in its non-core projects.

-ENDS-

The Board of Thor Energy Plc has approved this announcement and authorised its release.

For further information on the Company, please visit the website or please contact the following:

Thor Energy PLC

Andrew Hume, Managing Director

Alastair Clayton, Non-Executive Chairman

Rowan Harland, Company Secretary

Tel: +61 (8) 6555 2950

Zeus Capital Limited (Nominated Adviser and Joint Broker)

Antonio Bossi / Darshan Patel / Gabriella Zwarts

Tel: +44 (0) 203 829 5000

SI Capital Limited (Joint Broker)

Nick Emerson

Tel: +44 (0) 1483 413 500

Yellow Jersey (Financial PR)

Dom Barretto / Shivantha Thambirajah / Bessie Elliot

[email protected]

Tel: +44 (0) 20 3004 9512

About Thor Energy Plc

The Company is focused on hydrogen and helium exploration, which are crucial in the shift to a clean energy economy, with a portfolio that also includes uranium and other energy metals. For further information on Thor Energy and to see an overview of its projects, please visit the Company's website at www.thorenergyplc.com