Lake Resources Wins Key Argentina Permit Unlocking Kachi Lithium Financing

Kachi clears its most critical regulatory hurdle

Lake Resources has secured the Environmental Impact Declaration (Declaración de Impacto Ambiental, or DIA) for its flagship Kachi Lithium Brine Project in Catamarca Province, Argentina. Issued by the Catamarca Ministry of Mining, the DIA is the primary environmental permit granted by provincial authorities and represents the single most important milestone in the project’s history, according to management.

With the DIA in hand, Kachi is now fully permitted and transitions from a permitting-focused phase to detailed project delivery and financing. This positions Kachi as one of the very few fully permitted, large-scale, independent greenfield lithium brine projects globally to have reached this advanced stage.

Alongside the permit, the company has committed to a US$1 million contribution to the Mining Royalty Trust Fund of Catamarca (Fondo Fiduciario de Regalías Mineras de la Provincia de Catamarca), payable in instalments from October 2026 through June 2027. The funds are expected to support local infrastructure projects within the province.

What the DIA means and why it matters to investors

The DIA is Argentina’s primary provincial environmental permit. In plain terms, it confirms that a project’s engineering design, resource management plan, and sustainability profile meet the strict environmental and social standards set by provincial and national authorities. Receiving it is not automatic — it requires completion of a statutory public consultation phase and inter-agency evaluations.

For investors, the distinction between a project that holds its permits and one still seeking them is significant. Fully permitted status removes a major category of sovereign and regulatory risk, and it is typically a prerequisite for advancing financing discussions, negotiating offtake agreements, and attracting strategic equity partners. Lenders and offtakers rarely commit capital to projects where permitting outcomes remain uncertain.

The DIA for Kachi also incorporates a 200-metre surficial exclusion zone around the lagoon shoreline, adopted as part of the project’s environmental management framework to define the boundary between project activities and the lagoon ecosystem. Importantly, based on the company’s current estimates, this exclusion zone is not expected to affect Kachi’s existing Ore Reserve Estimate or the wellfield development plan supporting the planned production profile of 25,000 tonnes per annum (tpa) lithium carbonate equivalent. An updated mineral resource estimate is being prepared to formally account for the exclusion zone.

In summary, DIA compliance confirms:

• Engineering design meets provincial standards
• Resource management plan approved
• Sustainability and ESG profile confirmed
• Social licence formalised through community consultation process

Advancing into FEED — what happens next

FEED, or Front-End Engineering Design, is the final engineering phase before a company reaches its Final Investment Decision (FID). It converts the detailed work done at the feasibility stage into construction-ready engineering packages, procurement strategies, and financing-grade technical documentation.

Building on the existing Definitive Feasibility Study (DFS), the DFS Addendum, and prior work with engineering partners Hatch and Lilac Solutions, the FEED phase for Kachi will focus on four key areas:

1. Engineering definition and optimisation — refining civil, structural, mechanical, and electrical engineering packages for phase one of the 25,000 tpa lithium carbonate equivalent commercial facility
2. Procurement and vendor integration — securing long-lead equipment packages and advancing commercial terms with critical suppliers
3. Constructability and execution optimisation — early works, construction logistics, modular assembly schedules, and operational risk mitigation plans for the Kachi site
4. Financing support — delivering detailed technical documentation required by lead financial advisors Citi and J.P. Morgan, export credit agencies, prospective off-takers, and strategic project equity partners to support ongoing project debt, strategic equity, and offtake discussions

With the DIA now secured, Lake is also in a position to finalise and submit its well-advanced application for the Régimen de Incentivo para Grandes Inversiones (RIGI), Argentina’s large investment incentive regime. The RIGI application represents an additional near-term catalyst for the project.

Positioned for strategic partnerships and project financing

The combination of full permitting status and FEED commencement materially changes the conversations Lake can have with financial counterparties. Off-takers, export credit agencies, and strategic equity partners conduct due diligence on projects that can demonstrate both regulatory credibility and engineering readiness. The DIA provides the former; FEED builds the latter.

The appointment of Citi and J.P. Morgan as lead financial advisors signals an institutional-grade financing process is underway, with FEED outputs directly feeding the technical documentation those advisors require.

David Dickson, Managing Director and CEO, Lake Resources

“Securing the Environmental Impact Declaration for Kachi is the most important milestone in Lake Resources’ and Kachi’s history. It moves Kachi into fully permitted status, making the project shovel-ready and validating the world-class scientific foundation of Lilac’s Direct Lithium Extraction model.”

On the ESG dimension, Lilac’s Direct Lithium Extraction (DLE) technology — which returns over 99% of processed brine to the aquifer — underpins the project’s environmental credentials. This is directly relevant to sustainability-focused strategic partners and export credit agencies evaluating the project.

The near-term milestone pipeline for Kachi includes:

• FEED phase progresses with Hatch and Lilac Solutions
• RIGI application submission
• Updated mineral resource estimate incorporating the exclusion zone
• Strategic financing and partnership negotiations continue
• Final Investment Decision (FID) — longer-term commercial execution gateway

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