Rio Tinto Argentina Lithium Incentives Expand Fenix Growth Plan

Rio Tinto Argentina Lithium

Rio Tinto Argentina lithium incentives have strengthened again after Argentina approved the company’s $530 million expansion of the Fenix lithium project under its large-investment incentive regime. The approval marks Rio Tinto’s second lithium project accepted under Rigi, reinforcing Argentina’s role in the group’s battery materials strategy.

The Fenix expansion is expected to add 9,500 t/yr of lithium carbonate equivalent production capacity. Once completed, total output from the project is expected to reach around 41,500 t/yr.

Rio Tinto Argentina lithium incentives also support the company’s broader target to produce 200,000 t/yr of lithium carbonate equivalent by 2028. Most of that output is expected to come from Argentina, where Rio Tinto significantly expanded its position through the acquisition of Arcadium Lithium assets.

Fenix Expansion Adds Capacity to a Long-Running Lithium Asset

The Fenix project has operated in Catamarca province since 1997 and currently has nameplate capacity of 32,000 t/yr. The approved expansion adds new production to an established asset, reducing some of the execution risk compared with a fully greenfield project.

Argentina’s economy minister Luis Caputo said the new build would add $165 million to Fenix’s annual revenue from lithium carbonate equivalent sales. This gives the expansion clear commercial weight at a time when lithium producers are prioritising scale, cost control, and project discipline.

The approval also follows Rio Tinto’s earlier Rigi acceptance for Rincon. That $2.7 billion project is designed for 60,000 t/yr of lithium output and is expected to become the company’s future flagship lithium operation in Argentina.

Rigi Gives Argentina a Stronger Lithium Investment Platform

Rigi has become a central part of Argentina’s strategy to attract large-scale mining investment. The regime grants exemptions from value-added and import-export taxes, offers legal protections, and guarantees 30 years of regulatory stability.

That stability is especially important in lithium, where projects require large capital commitments, long permitting timelines, and confidence in tax and export rules. For Rio Tinto, Rigi helped support the investment case for deeper exposure to Argentina’s lithium sector.

The company’s former chief executive Jakob Stausholm said Rigi was one of the main reasons behind his confidence in acquiring Arcadium Lithium’s Argentine assets. That shows how fiscal and legal stability can directly influence global mining capital allocation.

The Metalnomist Commentary

Argentina is using Rigi to convert lithium resource potential into project commitments from major global miners. Rio Tinto’s second approval shows that policy stability can become as important as geology when battery metal producers decide where to invest.