Eramet Argentina Lithium Plant Reaches 80% Capacity as Ramp-Up Recovers

Eramet Argentina Lithium Plant

Eramet Argentina lithium plant performance improved sharply in March as the Centenario-Ratones project reached around 80% of its designed capacity. The French mining group said the plant operated near 80% of its 24,000 t/yr nameplate capacity after recovering from February production setbacks.

The Eramet Argentina lithium plant is strategically important because Argentina is becoming one of the fastest-growing lithium supply regions globally. Stronger output from Centenario-Ratones supports the country’s push to challenge Chile’s long-standing lithium leadership.

The Eramet Argentina lithium plant produced 3,720t of lithium carbonate in the first quarter. Output was limited by downstream equipment shutdowns and natural gas supply constraints, but operations normalised in March.

Centenario-Ratones Recovers After February Disruptions

Eramet temporarily shut part of its downstream equipment in February for an extended period. The work was designed to implement improvements and support the ramp-up process.

Natural gas supply constraints also limited production during the quarter. These disruptions show that lithium brine projects depend not only on resource quality, but also on reliable processing equipment and energy supply.

Centenario-Ratones achieved its highest production rate to date in March. This suggests the project is moving closer to stable commercial performance after early ramp-up challenges.

The ramp-up is expected to be completed by July at the latest. If achieved, this would strengthen Eramet’s position in Argentina’s lithium supply chain and improve near-term lithium carbonate availability.

Lithium Sales Highlight Stronger Price Environment

Eramet sold 3,920t of lithium carbonate in the first quarter, generating €57mn in revenue. That implies an average realised price of roughly $16,986/t.

The first-quarter lithium revenue already exceeded Eramet’s lithium revenue for all of 2025. This highlights the impact of stronger lithium carbonate prices and improving sales volumes.

The result matters for project economics. Higher lithium prices can support ramp-up costs, equipment improvements and working capital needs during the early production phase.

For Argentina, Centenario-Ratones adds to a growing pipeline of lithium projects backed by more investor-friendly policies. Successful ramp-up would reinforce Argentina’s role as a major future source of lithium carbonate for battery supply chains.

The Metalnomist Commentary

Centenario-Ratones shows both the opportunity and execution risk in Argentina’s lithium growth story. Strong prices improve project economics, but stable energy supply and processing reliability will decide whether ramp-up targets become sustained production.