Highlights

  • Wesfarmers and SQM approved a AUD 1.4 billion Mount Holland expansion project.
  • The expansion aims to double spodumene concentrate production capacity.
  • Additional refining capacity will require future expansion of the Covalent refinery.
  • Wesfarmers shares eased around 1.4% during intraday trading following the announcement.

Wesfarmers Limited (ASX:WES) announced a significant expansion of its Mount Holland lithium operation on 22 July 2026, committing to a AUD 1.4 billion investment alongside joint venture partner SQM. Despite the sizeable growth initiative, the company's shares traded around 1.4% lower during intraday trading, reflecting continued investor caution towards the lithium sector.

The expansion is designed to substantially increase production at the Mount Holland project in Western Australia. Under the agreement, Wesfarmers and SQM will each contribute up to AUD 715 million to support the development, with the project targeting a doubling of spodumene concentrate output to approximately 760,000 tonnes per year. The expansion also includes construction of an ore-sorting facility intended to improve operational efficiency and reduce production costs.

While the mining operation is set to expand, additional concentrate cannot immediately be processed through the partners' Covalent lithium refinery near Perth. The refinery will require its own expansion before it can accommodate higher production volumes. As a result, the mine expansion represents only one stage of the broader development strategy, with downstream processing capacity expected to remain an important consideration.

The announcement comes after an extended period of volatility across global lithium markets. Battery material prices have experienced significant fluctuations in recent years, prompting many producers to reassess investment plans. Wesfarmers' decision to proceed with the expansion reflects its continued participation in the long-term development of the lithium supply chain despite prevailing market conditions.

Although the announcement outlined a major capital commitment, investors remained cautious during the trading session. The intraday decline indicates that broader concerns surrounding lithium demand, commodity prices and project execution continued to influence market sentiment. The reported share price movement reflected early trading activity and should be viewed as an intraday market reaction rather than a final closing result.

Wesfarmers is one of Australia's largest diversified companies, with operations spanning retail, chemicals, fertilisers, industrial businesses and resources. Through its partnership with SQM, the company has expanded its presence within the lithium industry as demand for battery materials continues to evolve alongside global electrification trends.

Looking ahead, investors are likely to monitor progress on the Mount Holland expansion, future decisions regarding the Covalent refinery, lithium market conditions and project execution milestones. Commodity prices, operating costs and capital expenditure will also remain important factors as the project advances.

What Investors May Watch

Investors may monitor construction progress, refinery expansion plans, lithium prices, project costs and future operational updates.

Risks

Key risks include lithium price volatility, project execution challenges, cost inflation, refinery expansion timing, regulatory approvals and broader commodity market uncertainty.