POSCO Completes Second Argentina Lithium Plant
POSCO Holdings completed its second lithium plant in Argentina, with an annual production capacity of 50,000 tons of lithium hydroxide. The project, costing $954 million, includes a 23,000-ton lithium carbonate plant and will support a downstream process in South Korea. POSCO plans to expand production to 100,000 tons by 2033, aiming to secure critical minerals for national industries.
How this was made

The 30-second read
Why it matters
The project secures a domestic source of battery‑grade lithium hydroxide, reducing reliance on external suppliers.
Market read
First‑report of a major lithium project completion with significant capital investment, likely to influence POSCO's stock and the broader lithium market.
What to watch
Potential logistical challenges in transporting lithium from high‑altitude Argentina to South Korea could delay full utilization.
Background
POSCO's lithium expansion aligns with its 'triple core' strategy to secure critical minerals for AI data centers and energy storage.
Market effects
strengthens the global lithium supply outlook, supporting battery manufacturers and EV producers.
boosts investor sentiment toward South Korean industrial firms and Argentine mining sector.
adds to the growing supply side of the lithium market, potentially moderating price spikes.
Counterpoint
If demand for LFP batteries slows, the added capacity could lead to oversupply and pressure lithium prices.
Key entities
- companyPOSCO Holdings
South Korean steel and materials conglomerate expanding into lithium production.
- governmentArgentina
Host country for the new lithium plant.




