POSCO Inaugurates a New Lithium Carbonate Plant and Plans to Expand Sal de Oro to 100,000 Tonnes
POSCO will inaugurate a new lithium carbonate plant in Argentina on October 6, with a capacity of 23,000 tonnes per year. The company plans to expand its Sal de Oro project to 100,000 tonnes annually, supported by a $700 million financing deal. POSCO also operates a lithium hydroxide plant in General Güemes with a capacity of 25,000 tonnes per year.
How this was made

The 30-second read
Why it matters
The plant inauguration and financing signal a commitment to scale lithium production, likely improving POSCO's long‑term growth prospects and attracting investor interest in its ADR.
Market read
First‑report of a major lithium plant and sizable financing, relevant for commodity, EV, and battery‑related equities.
What to watch
Potential regulatory or community delays in Argentina could slow the ramp‑up despite financing.
Background
POSCO, a major South Korean steelmaker, is expanding into lithium chemicals in Argentina, a strategic move to diversify into high‑growth battery materials.
Ticker impact
POSCO announced the inauguration of a new 23,000‑tonne lithium carbonate plant and disclosed up to $700 million of financing for its Argentine operations.
likely upward pressure as the market prices in expanded lithium output and strong financing support
First‑report disclosure of a large‑scale plant and multi‑hundred‑million financing is material for a dual‑listed miner.
Market effects
strengthens the lithium supply outlook, supporting battery and EV sector sentiment
boosts Argentine mining investment narrative and may attract further foreign capital to the region
adds to global lithium supply growth, relevant for commodity markets and EV manufacturers
Counterpoint
If lithium prices soften, the new capacity could pressure margins and lead to over‑supply concerns.
Key entities
- CompanyPOSCO
South Korean steelmaker expanding lithium operations in Argentina
- Financial InstitutionIDB Invest
Provider of up to $700 million financing for the project




