MinRes’ Lithium Future Hinges on $1.2B POSCO Partnership Amid Market Shifts

A Strategic Lithium Alliance

Mineral Resources Limited (MinRes) has taken a decisive step to strengthen its position in the global lithium market by entering into a binding agreement with South Korea’s POSCO Holdings. The two companies will form a new incorporated joint venture to hold MinRes’ operational lithium business, including its 50% stakes in the Wodgina and Mt Marion lithium mines in Western Australia.

Under the terms, POSCO Holdings will acquire a 30% interest in the joint venture for an upfront cash payment of US$765 million (approximately A$1.2 billion), valuing MinRes’ 50% interest in these Tier 1 assets at around A$3.9 billion. MinRes will retain a majority 70% ownership and continue to operate both mines, maintaining its operational expertise and control.

Capital Recycling and Growth Potential

This transaction exemplifies MinRes’ strategy of capital recycling, unlocking value from existing assets to strengthen its balance sheet and fund future growth. The company plans to use the proceeds primarily to repay external debt, thereby fortifying its financial position and enabling it to pursue new strategic opportunities across its portfolio.

Both Wodgina and Mt Marion are recognised as world-class hard rock lithium assets with significant expansion potential. The partnership with POSCO, a global leader in lithium chemical supply, not only validates the quality of these mines but also positions both companies to better respond to the surging demand for Australian lithium driven by the global transition to electric vehicles and renewable energy.

Strengthening Global Supply Chains and Bilateral Ties

POSCO’s investment secures offtake rights to spodumene concentrate proportional to its stake, underpinning its plans to expand downstream processing capacity. This move is strategic for POSCO as it aims to secure a stable, cost-competitive supply of raw materials to enhance its competitiveness in energy materials alongside its steel business.

The partnership also deepens the existing relationship between MinRes and POSCO, which previously collaborated on the Onslow Iron joint venture. It signals growing international confidence in Australia’s critical minerals sector and strengthens bilateral ties between Australia and Korea in the rapidly evolving battery supply chain.

Looking Ahead

The deal is subject to customary regulatory approvals, including from the Foreign Investment Review Board, and is expected to complete in the first half of 2026. Once finalised, this partnership will not only enhance MinRes’ financial flexibility but also reinforce its reputation as a world-class operator in the lithium sector.

As global demand for lithium intensifies, this joint venture could serve as a blueprint for future collaborations between Australian resource companies and international partners seeking to secure critical minerals for the energy transition.