30 June 2025

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

Update to CEOL Appeal

CleanTech Lithium PLC (AIM: CTL, Frankfurt: T2N), an exploration and development company focused on advancing sustainable lithium projects in Chile, provides an update on its application for a Special Lithium Operating Contract ("CEOL") for its Laguna Verde project.

The Company has been informed by the Ministry of Mines in Chile that its appeal to enter the streamlined process has not been accepted. The Ministry confirmed that the selection criteria based on licence holdings within fixed polygons published by the Ministry and a uniform definition of financial capacity must be applied equally across all prioritised salars and cannot be changed. As a result, CleanTech Lithium's application did not meet the specific technical thresholds to enter the streamlined process.

Ignacio Mehech, Chief Executive Officer, CleanTech Lithium PLC, said: "Despite this outcome, the Company remains in close dialogue with the Ministry and will now pursue the public tender process for CEOL allocation. CleanTech Lithium believes it is best positioned to be awarded the CEOL for Laguna Verde and we will be keeping our stakeholders informed as we progress through the next stage of the application."

The Company remains eligible to take part in the upcoming public tender process and expects more details to be available once the indigenous consultation for Laguna Verde has finished in the coming months.

Importantly, CleanTech Lithium holds the dominant licence position at Laguna Verde and is the only company to have conducted extensive exploration and technical studies, significantly de-risking the project. With over US$30 million already invested in its Chilean operations and co-signed agreements with local indigenous communities, CleanTech Lithium has demonstrated its financial, technical and social commitment to developing high-quality lithium assets that align with Chile's strategic goals for the National Lithium Strategy and advancing the country's sustainable lithium industry.

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**