Kwinana Lithium Refinery: What IGO’s Write down Means for Australia’s Battery Supply Chain

The Kwinana lithium refinery was supposed to prove Australia could do more than dig up spodumene and ship it to China. Instead, it has become the most expensive lesson in the country’s downstream ambitions. IGO has fully impaired its 49% stake in the joint venture with Tianqi Lithium, writing off A$605 million against the Kwinana assets after the plant posted a net loss of A$955 million for FY25. The refinery is running well below its 24,000 tonne nameplate capacity, haemorrhaging cash, and now facing an uncertain ownership structure.

This is not just an IGO problem. If Kwinana fails under full Chinese ownership, it raises serious questions about whether Australia can build a domestic battery materials industry at all.

Why the Kwinana Lithium Refinery Has Never Worked as Planned

Tianqi broke ground on Kwinana in 2016. Train 1 produced its first battery-grade lithium hydroxide in 2021. Four years later, the plant has never sustained production anywhere near nameplate capacity.

In the first half of FY25, Kwinana produced just 3,095 tonnes of lithium hydroxide against an annualised capacity of 24,000 tonnes. That is roughly 26% utilisation. Conversion costs sat at A$27,136 per tonne, while the facility posted an EBITDA loss of A$161 million for the half. Construction of the second train has been suspended indefinitely.

The problems are technical, not just cyclical. Equipment failures, slow ramp-up, and high operating costs have plagued the site since commissioning. Lithium hydroxide prices have fallen more than 60% since late 2022, but even at higher prices, Kwinana’s cost base would struggle to compete with integrated Chinese processors.

IGO Is Walking Away. Tianqi Is Staying. What Happens Next

IGO has been explicit: it does not see a path to sustainable returns at Kwinana. The company is in active discussions with Tianqi about the future of its 49% stake. A full exit is on the table.

Tianqi, by contrast, has confirmed it intends to retain control and is not shutting the refinery down. The Chinese company operates four lithium production bases in China and is building a 30,000 tonne battery-grade hydroxide facility at Zhangjiagang. Kwinana, despite its issues, gives Tianqi a processing foothold in the world’s largest hard-rock lithium jurisdiction.

The divergence in outlook is telling. IGO, as an Australian-listed company answerable to shareholders, cannot justify continued capital allocation to a loss-making downstream asset. Tianqi, backed by the strategic logic of securing feedstock processing outside China, can afford a longer time horizon.

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Australia Has the Ore and the Policy Tailwinds. It Does Not Have the Operating Expertise.

Australia produces roughly half the world’s lithium. It has bipartisan political support for onshore processing, A$7 billion in legislated critical minerals production tax credits, and every geological advantage a downstream industry could want.

What it does not have is operational experience running chemical plants at scale. Kwinana is not an isolated case. Albemarle’s Kemerton hydroxide facility in Western Australia has faced delays and cost overruns. The Wesfarmers-SQM Mt Holland project encountered similar problems. The pattern suggests systemic challenges in establishing lithium chemical processing in Australia, not just bad luck at one site.

Building a refinery is a capital allocation decision. Running one efficiently is an operational capability. China has spent two decades building integrated lithium supply chains with established expertise, lower labour costs, and economies of scale that Australian operators cannot yet match.

If Kwinana Fails Under Chinese Ownership, What Does That Signal to Investors

The uncomfortable scenario is this: IGO exits, Tianqi takes full control, and Kwinana either limps along as a strategically motivated loss-maker or eventually shuts down. Either outcome undermines the investment case for Australian downstream processing.

For junior lithium companies pitching downstream integration, Kwinana is a cautionary tale. The gap between a feasibility study and a profitable operating plant is enormous. Investors who have backed the “mine-to-battery” thesis in Australia should be watching this closely.

The broader policy question is whether production tax credits and favourable regulation are sufficient to overcome a genuine skills and scale deficit. Government incentives can close a cost gap. They cannot create operating expertise that does not exist.

• IGO has fully impaired its A$605 million stake in the Kwinana lithium refinery after the joint venture posted a A$955 million net loss in FY25. The company sees no path to sustainable returns.
• Kwinana’s problems are structural, not just cyclical. Multiple Australian lithium hydroxide projects have faced similar ramp-up failures, suggesting a systemic capability gap in downstream processing.
• If Tianqi assumes full control, Australia’s flagship onshore lithium refinery will be entirely Chinese-owned, complicating the narrative around sovereign battery supply chains.

 What is happening with the Kwinana lithium refinery?

IGO has fully impaired its 49% stake in the Kwinana lithium hydroxide refinery and is in discussions with joint venture partner Tianqi Lithium about exiting the project. The refinery posted a net loss of A$955 million in FY25 and has never operated near its 24,000 tonne annual nameplate capacity. Construction of the second processing train has been suspended. Tianqi has indicated it intends to retain its 51% stake and continue operations.

Why is the Kwinana lithium refinery losing money?

The refinery faces a combination of technical ramp-up failures, high conversion costs, and a collapse in lithium hydroxide prices exceeding 60% since late 2022. In the first half of FY25, Kwinana produced just 3,095 tonnes at a conversion cost of A$27,136 per tonne, well above competitive benchmarks set by integrated Chinese processors. Equipment failures and production disruptions have prevented the plant from reaching economies of scale.

Who owns the Kwinana lithium refinery?

The Kwinana refinery is owned by Tianqi Lithium Energy Australia (TLEA), a joint venture between China’s Tianqi Lithium (51%) and Australia’s IGO Ltd (49%). IGO is currently seeking to exit its stake after fully impairing the investment. If IGO exits, Tianqi would assume full ownership of Australia’s only operating lithium hydroxide refinery.

What does the Kwinana writedown mean for Australia’s battery supply chain?

The write down signals that Australia’s push to move beyond raw lithium extraction into downstream chemical processing faces serious commercial and operational barriers. Multiple Australian hydroxide projects, including Albemarle’s Kemerton and the Wesfarmers-SQM Mt Holland facility, have encountered similar difficulties. Government incentives such as critical minerals production tax credits may narrow the cost gap but cannot substitute for the operating expertise and scale that Chinese processors have built over two decades.

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