[SMM Analysis] Rio Tinto’s Q2 Lithium Output Up 20% YoY

Rio Tinto released its production results for the second quarter of 2026. According to the report, Rio Tinto’s lithium production in Q2 stood at 14,600 tonnes of lithium carbonate equivalent (LCE), up 20% year-on-year and 15% quarter-on-quarter. By product, lithium carbonate output reached 13,900 tonnes, lithium hydroxide output was 5,300 tonnes, and other specialty lithium products stood at 1,100 tonnes on an LCE basis. Rio Tinto noted in the announcement that, as its lithium business is vertically integrated, the production volumes of different lithium products should not be directly added together.

In terms of production changes, Rio Tinto’s Q2 lithium output growth was mainly driven by the ramp-up of the Rincón starter plant in Argentina, as well as the earlier-than-scheduled first production from the Sal de Vida and Fénix 1B projects. The Rincón starter plant produced 385 tonnes of LCE in the second quarter. Year to date, Rio Tinto’s lithium production declined 7% year-on-year, mainly due to the Mt Cattlin mine being placed on care and maintenance at the end of March 2025, which weighed on hard-rock lithium output.

On project progress, construction of the full-scale Rincón lithium plant is advancing and remains in the early execution stage. Current work is focused on key infrastructure, including camp facilities, utilities and pipelines, while site earthworks, early preparation works and supporting infrastructure construction are also underway. The Sal de Vida project achieved first production ahead of schedule in Q2 and is currently in the commissioning stage. The Fénix 1B expansion project also delivered first production ahead of schedule in Q2 and has entered commissioning. Rio Tinto previously disclosed that Sal de Vida has a planned capacity of 15,000 tonnes of LCE per year, while the Fénix 1B expansion has a planned capacity of 10,000 tonnes of LCE per year.

In terms of prices, the average CIF China, Japan and Korea price stood at US$22,043/tonne in the second quarter of 2026. Meanwhile, Rio Tinto’s average realised lithium product price in the first half of 2026 was US$18,960/tonne LCE.

In addition, the Nemaska Lithium project is planned to deliver first production in 2028. Following an in-depth review initiated in the first quarter, the construction pace of its Bécancour processing plant will slow in 2026. The plant is currently more than 70% complete. Necessary activities such as asset preservation and site integrity works will continue, while other activities will be paused or deferred and the contractor workforce will be temporarily reduced. Rio Tinto previously disclosed that the Nemaska Lithium project is located in Quebec, Canada, with Rio Tinto holding a 50% interest. The project has a planned capacity of 28,000 tonnes of LCE per year, producing integrated lithium hydroxide.

SMM believes Rio Tinto’s year-on-year and quarter-on-quarter growth in Q2 lithium output mainly reflects the gradual production ramp-up of its Argentine brine assets, particularly as Sal de Vida and Fénix 1B achieved first production ahead of schedule. This indicates that the execution progress of the company’s brine lithium project portfolio is slightly ahead of previous expectations. In the short term, as these new projects remain in the commissioning and ramp-up stages, their actual contribution to global lithium supply still requires further observation. In the medium to long term, as Rincón, Sal de Vida and the Fénix expansion continue to advance, Rio Tinto’s capacity weighting in South American brine lithium resources is expected to increase further. However, the care and maintenance status of Mt Cattlin and the slower construction pace at Nemaska also suggest that, under the current lithium price environment, mining companies are continuing to adjust development priorities across different assets based on project economics and capital expenditure pressure.