[SMM Analysis] Greenbushes CGP3 Fire: How Australian Ore Determines the Floor and Upside Room of Lithium Prices

On June 9, a fire broke out at Greenbushes Chemical-Grade Beneficiation Plant 3 (CGP3). The fire was quickly extinguished with no casualties, CGP1 and CGP2 continued normal operations, and IGO confirmed the next day that its FY2026 concentrate guidance of 1.375 million to 1.425 million mt remained unchanged. CGP4 is planned to commence in 2027.

Judging solely by the announcement, this was a well-handled operational incident. However, the location of the fire warrants closer attention: CGP3 is not existing capacity but incremental capacity being ramped up at the far left of the global cost curve – with a total investment of about AUD 880 million, designed to add approximately 500,000 mt/year of concentrate capacity, and which only achieved first feed in December 2025 and was originally expected to reach full production by mid-this year. The damage assessment is still ongoing, repair costs and timetable are yet to be quantified, and the so-called "guidance maintained" is based only on information from the initial stage of the incident. What merits tracking going forward is not the guidance itself, but whether the timing of reaching full production will be delayed.

At the world's lowest-cost mine, a new production line has had a minor incident – should the market be concerned?

Today, I aim to break down and clarify this mechanism by analyzing the role of Australian ore in the lithium price formation.

Note: Clarification on the timeline for CGP3 reaching full production.At its FY26 Q2 results briefing in late January 2026, IGO stated that CGP3 achieved first feed in December 2025 and that ramp-up to nominal capacity would take approximately five months. Some English transcripts recorded management's remarks as "completing ramp-up before the end of the calendar year" (end of the calendar year). However, based on the timing of first feed, five months corresponds to mid-2026, i.e., before the end of the Australian financial year (FY26), which is consistent with the company's previously disclosed guidance of "reaching full production in mid-2026." The transcript likely mistook "end of the financial year" for "end of the calendar year." This article adopts the "mid-2026 full production" timeline. This timing implies that the June 9 CGP3 fire occurred a few weeks before the originally scheduled full production, and the actual impact will be confirmed in IGO's Q4 report (expected in late July).

Greenbushes: A Benchmark at the Bottom of the Cost Curve

Greenbushes' most fundamental advantage lies first in its ore grade. It is one of the world's largest and highest-grade hard-rock lithium mines in production, with raw ore grade roughly double the industry average. For spodumene mines, grade directly determines mining and processing efficiency. To produce one tonne of SC6 concentrates, Greenbushes needs to process significantly less raw ore than typical mines, giving it natural cost advantages in mining, beneficiation, energy consumption, and tailings management.

Building on its high-grade ore, Greenbushes also benefits from economies of scale. The mine site now hosts multiple beneficiation plants with a combined nominal processing capacity of approximately 6.5 million mt/year, supporting a maximum lithium concentrate capacity of up to 1.5 million mt; once CGP3 has fully ramped up, it will add roughly 500,000 mt of additional concentrate capacity. With the mine life further extended to 2045, Greenbushes not only possesses low-cost advantages but also strong long-term supply capability.

This is why Greenbushes has demonstrated significant resilience during the lithium price downturn. From 2024 to 2025, as lithium prices continued to pull back, many high-cost Australian mines and Chinese lepidolite projects faced pressure to suspend or cut production, yet Greenbushes maintained relatively sound profitability and continued to advance the CGP3 expansion. It represents not the industry's average cost, but the most competitive end of the global hard-rock lithium ore cost curve.

Therefore, Greenbushes serves as a useful benchmark for observing the industry bottom. When lithium prices fall, high-cost capacity exits first, while low-cost capacity continues to produce. The closer prices move to Greenbushes' cost range, the fewer marginal units of capacity can sustain normal operations in the market, and the nearer supply exits are to completion.

Greenbushes Has the Largest Production, but Limited Free-Float Volume

Although Greenbushes has a very large production scale, relatively little of its concentrates can enter the spot market directly. Greenbushes is operated by Talison Lithium, whose shareholders include TLEA and Albemarle, with TLEA jointly held by Tianqi Lithium and IGO. The spodumene concentrates produced at the mine are primarily allocated under shareholder offtake arrangements, flowing to lithium chemical production lines within the shareholder systems of Tianqi, Albemarle, and others, and are not normally offered for direct sale to the market.

Viewed through the framework of [Resources – Designed Capacity – Actual Production – Saleable Volume – Available Spot Volume], Greenbushes is a very typical case. Its actual production ranks among the world's largest, but since most of its concentrates are locked up within its shareholder system, the volume truly available for market-based transactions is relatively limited.

This also means Greenbushes' influence on market prices is mostly indirect. On one hand, it defines the scale of global low-cost lithium resource supply, which has an important impact on the lithium chemical cost curve; on the other, its operating costs, offtake pricing, and expansion pace also serve as key references for long-term lithium ore contract negotiations and price assessments.

By contrast, what really influences spot lithium ore prices in the short term are typically the marginal resources not fully locked up by shareholder offtake agreements and needing to find buyers on the market. These include some Australian mines, African lithium ore, and saleable cargo held by traders.

Therefore, while the addition of approximately 500,000 mt of concentrate capacity at Greenbushes will alter medium and long-term supply-demand expectations, its short-term impact on the spot market may not be particularly pronounced. In contrast, the suspension or resumption of a marginal mine with an annual output of over 100,000 mt that primarily sells on the open market could rapidly influence spot quotes and market sentiment.

It is well known that short-term prices are not entirely determined by total output; rather, they depend more on the volume of material freely available for trading in the market. For example, lithium carbonate's price elasticity hinges more on the current available volume in the market. The mine with the largest output does not necessarily hold the most direct pricing power in the spot market; what truly dictates short-term marginal prices are typically resources that are available, negotiable, and require immediate transaction.

However, shareholder offtake does not mean such concentrates are completely isolated from the market. When smelters within the frameworks of shareholders like Tianqi and Albemarle reduce their operating rates, or when some smelting lines operate erratically, concentrates originally intended for internal consumption may indirectly enter the market through toll processing, resales, or inventory adjustments.

These cargoes are usually not publicly tallied but affect the actual circulating volume in the lithium ore market. Their tracking requires assessment by combining shareholder smelter operating rates, concentrate inventory, toll processing arrangements, and import flows. In analyzing Australian ore supply, such shadow spot cargoes are often harder to observe than a mine's nominal production, yet can significantly influence the market during specific phases.

SC6 and Lithium Chemicals: Transmission Direction Reversed Once Within a Year

The price transmission relationship between Australian ore concentrates (SC6, CIF China) and China's lithium chemicals has completed a full round trip over the past year.

In H1 2025, ore prices followed the downtrend. In Q1, Australian mines aggressively cut costs but did not reduce production, showing a strong willingness to sell. SC6 fell all the way to around $620/mt, and the lower concentrate prices, in turn, pressured lithium chemicals downward, forming a spiral. The market's concern at the time was: When would mines finally be willing to cut?

The situation reversed starting at the end of Q3. The announcement of Yichun's plan to cancel 27 mining rights, along with the suspension at Jianxiawo, tightened expectations for domestic resource supply. Lithium chemical prices moved first, and SC6 followed with an uptrend that proved even more elastic—by December, the average price had already returned to around $1,300/mt. Formula pricing, linked to lithium chemical prices, allowed the mining side to capture the bulk of the upside gains, while the tolling margins of Chinese smelters were instead compressed.

Meanwhile, the impairment and expansion adjustments at the Kwinana project reflect that lithium chemical conversion in Australia continues to face high hurdles in terms of cost control, production ramp-up, and operational stability. TLEA's Kwinana lithium hydroxide plant was fully impaired in mid-2025, with the second-phase construction halted, and IGO has clearly shifted its priority to mining. The role of Australian ore in the industry chain has been refixed as a supplier of concentrates, and the linkage between SC6 and Chinese lithium chemical prices will only tighten going forward, not decouple.

The implied smelting margin—calculated by multiplying SC6 by the processing coefficient and comparing it to spot lithium chemical prices—has turned negative, meaning Chinese smelters using externally purchased ore are losing cash. Either ore prices must pull back or lithium chemical prices must rise; one of the two is inevitable. This indicator is the most powerful gauge of whether mines or lithium chemicals hold more pricing power.

Australian Mine Production Resumptions: Price Breaks Through the Ceiling

The key words for Australian ore in 2024-2025 were market exits, while in 2026 they have become revivals. Lithium prices have been climbing steadily since the beginning of the year, with futures prices once surpassing 200,000 yuan/mt, triggering a series of production resumptions in May and June:

Looking at these cases together, the real threshold for resuming production is more complex than simply having prices exceed cash costs.

Bald Hill took only about two months from announcement to first ore because it had maintained a production-ready state throughout the shutdown, and MinRes's own mining services division could internally mobilize all operations—mining, crushing, and transport—without needing to wait for external contractors. Assets of this type are the quickest-responding supply when prices rise. Finniss, by contrast, was an entirely different situation: it first sold inventory to Glencore in exchange for liquidity, then cobbled together three financing instruments—convertible bonds, debt, and a share placement—before reaching FID. For mines with fragile balance sheets, resuming production is not an operational decision but a financing event; what low-price cycles destroy is not resources, but financing capacity.

The market consequences of the resumption wave are already visible. Lithium carbonate hit a two-year high of 200,500 yuan/mt on May 13, then pulled back to the 160,000–170,000 yuan range in June, partly because the market saw resumption supply coming back. The logic is straightforward: when prices rise, idle capacity resumes production, supply expectations increase, and prices pull back. That list of idle capacity in Australia, when sorted, essentially forms the supply curve above lithium prices.

The CGP3 fire and this wave of production resumptions are actually two sides of the same market: disruption to the incremental supply at the far left of the cost curve is bullish, while idle capacity at the right end accelerating its return is bearish. Looking at lithium prices this year from the resource perspective, equilibrium is being sought between these two forces.

Lithium prices in 2026 are expected to fluctuate more frequently, but one-sided market moves will be shorter.

After prices rise, what truly caps the height of the rally is the speed at which idle capacity re-enters the market. Projects under care and maintenance or on standby, such as Bald Hill, Finniss, and Ngungaju, essentially constitute elastic supply above lithium prices. When lithium prices return above the cash costs of these projects and stay there long enough, mines have the incentive to resume production.

But production resumptions do not happen instantly. From the announcement of a restart to the rehiring of personnel, equipment maintenance, resumption of mining and processing, inventory buildup, and finally, the entry of concentrates into the market, it typically takes from two months to several quarters. This time lag is the window during which supply disruptions can drive prices higher. The suspension at Jianxiawo and the CGP3 fire at Greenbushes were able to affect market sentiment not because of a sudden global shortage of lithium resources, but because of a reduction in short-term available supply while idle capacity had yet to return.

Compared to the previous cycle, it is worth noting that the window for risk premiums arising from resource-side disruptions is shortening. A growing number of mines are opting for care and maintenance rather than permanent closure; mining service companies, traders, and downstream enterprises are also participating in restart financing and offtake arrangements. As long as prices return above the break-even line, some idle capacity can resume more quickly.

This means that in the future, lithium prices may still rise rapidly following supply disruptions, but the duration and height of one-sided market moves will be more easily constrained by production resumption expectations. Prices may not necessarily become more stable, but supply feedback could be faster.

SMM New Energy Analyst Yang Le