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E3 Lithium Provides Demonstration Plant Progress Update, Reminder of Webinar Today at 9am MT

Metallurgy & Processing Marketing Announcement

Suite 1520 – 300 5th Ave SW

Calgary, AB T2P 3C4

Tel: +1 (587) 324-2775

Email: [email protected]

Website: e3lithium.ca

E3 Lithium Provides Demonstration Plant Progress Update, Reminder of

Webinar Today at 9am MT

CALGARY, ALBERTA, April 16, 2025 – E3 LITHIUM LTD. (TSXV: ETL) (FSE: OW3) (OTCQX: EEMMF), “E3”,

“E3 Lithium” or the “Company,” a leader in Canadian lithium, is pleased to provide a progress update on its

Demonstration Facility (“Demo Facility”) which is planned to be commissioned in 2025. As previously

announced on Feb 25, 2025, the Demo Facility will be brought on stream in three phases over the second

half of 2025.

The critical pieces of equipment being manufactured for Phase 1 and Phase 2 of the Demo Facility are the

30-column process optimization equipment and the polishing equipment. These components will produce a

highly purified lithium chloride that will be converted into battery-quality lithium carbonate, using equipment

that is currently operating in E3 Lithium’s laboratory in Calgary, Alberta, that will be integrated into the Demo

Facility.

All of the critical components for the 5 skids being constructed have been procured and the skids are

approximately 50% assembled. Outlined in the pictures below is the valve control skid, which will operate

the 30 column DLE skid (not pictured) and one of the polishing skids. While delays can occur, the equipment

remains on schedule for Q2 completion and arrival on site in Q3. Installation, assembly, and commissioning

will commence in Q3, subject to regulatory approval.

E3 plans on drilling two wells, a production and injection pair to complete a subsurface demonstration, also

planned for Q3. Later in 2025, E3 will begin preparation for Phase 3, which includes the installation of a

commercial scale DLE column. The three Phases of the Demo Facility aim to fully validate the processing

technology and produce battery-grade lithium carbonate from Leduc Brines, which will significantly de-risk

the process heading into the completion of Feasibility and commencement of project financing for E3

Lithium’s Clearwater Project.

“It is always very exciting to see equipment being assembled,” commented E3 Lithium’s CEO, Chris

Doornbos. “A lot of design and process engineering has gone into ensuring this equipment is built to

operate effectively. I want to thank the team for their commitment and focussed efforts to deliver high

quality results and the fabricators for working diligently and safely to remain on schedule.”

As previously announced, the Company is hosting a Webinar this morning, April 16, 2025 at 9:00am MT to

provide commentary on current trends in the lithium and broader markets and review an update of the

Company’s 2025 development plans and recent announcements as found in the recently updated corporate

presentation available on E3 Lithium’s website at www.e3lithium.ca/presentations.

Registration Link: Zoom (click here to log in at the time of the webinar; no need to register)

Suite 1520 – 300 5th Ave SW

Calgary, AB T2P 3C4

Tel: +1 (587) 324-2775

Email: [email protected]

Website: e3lithium.ca

Picture 1: Valve control skid

For picture, see press release at www.e3lithium.ca/newsroom/news-releases/

Picture 2: Polishing skid

For picture, see press release at www.e3lithium.ca/newsroom/news-releases/

ON BEHALF OF THE BOARD OF DIRECTORS

Chris Doornbos, President & CEO

E3 Lithium Ltd.

E3 Lithium - Investor Relations

Alexis de la Renaudiere

Investor Relations

[email protected]

587-324-2775

E3 Lithium - Media Inquiries

Kati Dolyniuk

External Relations

[email protected]

587-324-2775

About E3 Lithium

E3 Lithium is a development company with a total of 16.2 million tonnes of lithium carbonate equivalent

(LCE) Measured and Indicated 1 as well as 0.9 million tonnes LCE Inferred mineral resources2 in Alberta and

2.5 million tonnes LCE Inferred mineral resources3 in Saskatchewan. The Clearwater Pre-Feasibility Study

outlined a 1.13 Mt LCE proven and probable mineral reserve with a pre-tax NPV8% of USD 5.2 Billion with a

29.2% IRR and an after-tax NPV8% of USD 3.7 Billion with a 24.6% IRR1. E3 Lithium’s goal is to produce high

Suite 1520 – 300 5th Ave SW

Calgary, AB T2P 3C4

Tel: +1 (587) 324-2775

Email: [email protected]

Website: e3lithium.ca

purity, battery grade lithium products to power the growing electrical revolution. With a significant lithium

resource and innovative technology solutions, E3 Lithium has the potential to deliver lithium to market from

one of the best jurisdictions in the world.

1: The Clearwater Project NI 43-101 Pre-Feasibility Study, effective June 20, 2024, is available on the E3

Lithium’s website (https://e3lithium.ca/our-assets/technical-reports/) and SEDAR+ (www.sedarplus.ca).

2: The mineral resource NI 43-101 Technical Report for the North Rocky Property, effective October 27,

2017, identified 0.9 Mt LCE (inferred) and is available on the E3 Lithium’s website

(e3lithium.ca/technical-reports) and SEDAR+ (www.sedarplus.ca).

3: The mineral resource NI 43-101 Technical Report for the Estevan Lithium District, effective May 23, 2024,

identified 2.5 Mt LCE (inferred) and is available on the E3 Lithium’s website (e3lithium.ca/technical-

reports) and SEDAR+ (www.sedarplus.ca).

Unless otherwise indicated, Kevin Carroll, P. Eng., Chief Development Officer and a Qualified Person under

National Instrument 43-101, has reviewed and is responsible for the technical information contained on this

news release.

Forward-Looking and Cautionary Statements

This news release includes certain forward- looking statements as well as management’s objectives,

strategies, beliefs and intentions or forward- looking information within the meaning of applicable securities

laws. Forward-looking statements are frequently identified by such words as “believe”, “may”, “will”, “plan”,

“expect”, “anticipate”, “estimate”, “intend”, “project”, “potential”, “possible” and similar words referring to

future events and results. Forward- looking statements are based on the current opi nions, expectations,

estimates and assumptions of management in light of its experience, perception of historical trends, and

results of the PFS, but such statements are not guarantees of future performance. In particular, this news

release contains forward -looking information relating to: the estimated mineral resources and mineral

resources at the Clearwater Project; expectations regarding the PFS, including statements regarding the

results of the PFS and interpretations thereof; expectations concerning t he Clearwater Project, including

extraction, production, pretreatment, purification, volume reduction and conversion process and features and

the expected outcomes thereof; the expected economic performance of the Clearwater Project, including

capital cost s, operating costs, water usage, land use and carbon emissions; statements regarding the

Company’s strategy for minimizing environmental impact and liquid waste and maximizing water reuse, with

no planned tailings or waste piles; the potential for a secondary revenue stream should the Company be able

to sell the calcium carbonate generated during the production of lithium hydroxide; plans and objectives of

management for the Company’s operations and the Clearwater Project; and the inherent hazards associate d

with mineral exploration and mining operations. In preparing the forward- looking information in this news

release, the Company has applied several material assumptions, including, but not limited to, that any

additional financing needed will be available on reasonable terms; the exchange rates for the U.S. and

Canadian currencies will be consistent with the Company’s expectations; that the current exploration,

Suite 1520 – 300 5th Ave SW

Calgary, AB T2P 3C4

Tel: +1 (587) 324-2775

Email: [email protected]

Website: e3lithium.ca

development, environmental and other objectives concerning the Clearwater Project can be achieved and that

its other corporate activities will proceed as expected; that the current price and demand for lithium will be

sustained or will improve; that genera l business and economic conditions will not change in a materially

adverse manner and that all necessary governmental approvals for the planned activities on the Clearwater

Project will be obtained in a timely manner and on acceptable terms; the continuity of the price of lithium.

All forward-looking information (including future-orientated financial information) is inherently uncertain and

subject to a variety of assumptions, risks and uncertainties, including the speculative nature of mineral

exploration and development, fluctuating commodity prices, the effectiveness and feasibility of emerging

lithium extraction technologies which have not yet been tested or proven on a commercial scale or on the

Company’s brine, risks related to the availability of financing on commercially reas onable terms and the

expected use of proceeds; operations and contractual obligations; changes in estimated mineral reserves or

mineral resources; future prices of lithium and other metals; availability of third party contractors; availability

of equipment; failure of equipment to operate as anticipated; accidents, effects of weather and other natural

phenomena and other risks associated with the mineral exploration industry; the Company’s lack of operating

revenues; currency fluctuations; risks related to dependence on key personnel; estimates used in financial

statements proving to be incorrect; competitive risks and the availability of financing, as described in more

detail in our recent securities filings available under the Company’s profile on SEDAR+ at www.sedarplus.ca.

Actual events or results may differ materially from those projected in the forward-looking statements and we

caution against placing undue reliance thereon. We assume no obligation to revise or update these forward-

looking statements except as required by applicable law.