Update to CEOL Application

30 April 2025

CleanTech Lithium PLC ("CleanTech Lithium" or the "Company")

Update to CEOL Application

CleanTech Lithium PLC (AIM: CTL, Frankfurt: T2N), an exploration and development company focused on advancing sustainable lithium projects in Chile, confirms that it has formally submitted an appeal (the "Appeal") regarding the recent decision by the Government of Chile not to admit the Laguna Verde project into the streamlined procedure for a Special Lithium Operating Contrast ("CEOL"), as referenced in the Company's announcement dated 23 April 2025.

The Appeal has been submitted in accordance with the timeline set out by the Chilean Government. CleanTech Lithium anticipates a response from the authorities by the end of May or early June 2025 and will update the market as soon as further information becomes available.

If the Appeal is not successful the Company will enter what is expected to be a short public tender process.

Ignacio Mehech, Chief Executive Officer, CleanTech Lithium PLC said: "CleanTech remains confident that our CEOL application for the Laguna Verde project can meet the criteria established by the Government to enter the streamlined process and will be supporting our Appeal in the near future with an ongoing dialogue with relevant stakeholders.

We are pleased that we retain the ongoing support of many parties in Chile who believe the early advancement of this project is in accordance with the National Lithium Strategy and will, as a result, deliver many benefits for the various stakeholders in Chile and internationally."

The information communicated within this announcement is deemed to constitute inside information as stipulated under the Market Abuse Regulations (EU) No 596/2014 which is part of UK law by virtue of the European Union (Withdrawal) Act 2018. Upon publication of this announcement, this inside information is now considered to be in the public domain. The person who arranged for the release of this announcement on behalf of the Company was Gordon Stein, Director and CFO.

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.

Notes

CleanTech Lithium (AIM:CTL, Frankfurt:T2N) is an exploration and development company advancing lithium projects in Chile for the clean energy transition. CleanTech Lithium has two key lithium projects in Chile, Laguna Verde and Viento Andino, and exploration stage project in Arenas Blancas (Salar de Atacama), located in the lithium triangle, a leading centre for battery grade lithium production.

CleanTech Lithium is committed to utilising Direct Lithium Extraction ("DLE") with reinjection of spent brine resulting in no aquifer depletion. Direct Lithium Extraction is a transformative technology which removes lithium from brine with higher recoveries, short development lead times and no extensive evaporation pond construction. For more information, please visit: www.ctlithium.com

**ENDS**