Sigma Lithium Restarts Mining After Court Win, Keeps 330,000t 2027 Target on Track
Key Takeaways
- A Federal Court of Appeals has maintained Sigma Lithium's environmental licences, reversing the 8 September emergency suspension and allowing full resumption of mining-industrial operations.
- Sigma says it can reach 330,000 tonnes of annualised lithium oxide concentrate by year-end 2027 using existing Mine 1 and Cleantech Industrial Plant capacity, with no new capacity needed.
- The plant previously ran above 950 tonnes per day and passed 1,000 tonnes on several days, but the announcement gives no output for the stoppage period.
- Phase 2 would nearly double capacity to 580,000 tonnes from 2027 and Phase 3 would reach 830,000 tonnes, though neither is approved or funded.
- The 25 October presidential run-off is the next political marker, and management's expectation that headwinds will fade remains an opinion, not a fact.
Sigma Lithium resumes operations after Federal Court of Appeals win
Sigma Lithium (ASX: SAU, NASDAQ: SGML) announced on 6 October 2026 that a Federal Court of Appeals has maintained the validity of its current environmental licences, enabling the full resumption of its mining-industrial operations. The company calls the ruling a “Benchmark Legal Decision” based on technical merits.
The decision reverses the 8 September 2026 emergency ruling by a local federal judge in Teofilo Otoni, which had suspended the licences. The company states it was granted an “Emergency Motion for Suspensive Relief” by Senior Federal Judge Mônica Sifuentes (the “Desembargadora”).
For investors, the ruling removes a key operational overhang and restores the path to production. A return to operations is not a first, it is a restart of a site that began operating in 2023.
As paraphrased by the company, the Desembargadora found that a prolonged stoppage would cause a significant lasting negative economic impact in the Vale do Jequitinhonha:
A prolonged stoppage would generate a significant lasting negative economic impact in the Vale do Jequitinhonha, one of the less economically advantaged regions in the State of Minas Gerais.
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330,000t guidance backed by existing capacity
What supports the 2027 target
Sigma Lithium states it is on track to scale annualised production of lithium oxide concentrate to 330,000 tonnes by year-end 2027. Lithium oxide concentrate is the processed lithium-bearing product that battery producers buy as feedstock.
The company says guidance is supported by existing Mine 1 capacity in the South Pit operations, plus the Cleantech Industrial Plant and its recycling and reprocessing circuits. It states it does not need to add capacity to meet this target.
Three points from the company back that up:
- The plant previously demonstrated it can produce above 950 tonnes per day, achieved after its technological upgrade in Q4 2024.
- A reprocessing circuit for fines and ultra fines, added during the 2024 upgrade, was concluded in Q1 2025.
- Production surpassed 1,000 tonnes on several days.
Note that the 950 tonnes per day figure is a previously demonstrated capability, not current output. The announcement does not disclose production volumes for the stoppage period or how long the stoppage lasted.
Phase 2 and Phase 3 growth
The company plans to resume a Phase 2 expansion in 2027, designed to close to double annual capacity to 580,000 tonnes. It also plans a Phase 3 expansion to lift capacity further to 830,000 tonnes. Both remain plans, not approved or funded projects.
What is lithium oxide concentrate and why do licences matter?
Lithium oxide concentrate is an industrial-mineral product made by processing mined ore, and it is sold to battery makers. Environmental licences are the permits that allow a miner to dig and process legally, so losing them can halt everything.
Valid licences matter to you as an investor for three reasons:
- They allow production to continue without legal interruption.
- They support reliable deliveries to customers.
- They reduce the risk that a single court ruling stops revenue.
How did the court recognise the economic weight of Vale do Jequitinhonha?
The company says it supports approximately 19,000 direct and indirect jobs and around 80,000 family members across 12 municipalities. It also reports a range of regional economic indicators:
- GDP growth of 108% in Araçuaí and 91% in Itinga.
- GDP per capita growth of 123% in Araçuaí and 110% in Itinga.
- 9,410 new companies opening between January 2023 and March 2026 across the 17 priority municipalities in the Lithium Valley.
The company notes the GDP recovery started before it began full operations, between 2021 and 2023. That means the growth cannot be attributed to the mine alone.
The company also lists voluntary social programmes it says began before it generated revenue:
| Initiative | Result | Beneficiaries |
|---|---|---|
| Dona de Mim | More than 2,000 women became entrepreneurs through microcredit | Approximately 10,000 family members |
| Zero Drought | 1,400 Barraginhas (rainwater-based irrigation) built | Approximately 5,600 farmers and 22,400 family members |
| Water for All | Access to drinking water enabled | 100% of neighbouring communities |
| Education that Transforms | Schools, sports facilities and childcare centre renovated or built | Approximately 776 children and 1,500 parents |
What did the election results and legal claims involve?
The company says Minas Gerais elected a pro-lithium industry Governor in the first round with majority votes. The Jequitinhonha Valley region secured eighteen seats across state and federal legislatures, of which 95% have supported its development agenda.
The presidential run-off is on 25 October. Management believes headwinds regarding its activities will subside, which is a management opinion, not an established fact.
On the legal background, the lawsuit behind the September ruling was filed by Ngolo, an association that states it acts on behalf of local Quilombola communities. The company states the government registry showed no Quilombola heritage descendent houses within 12 km of the Grota do Cirilo Project when its licences were issued, beyond the 8 km regulatory radius. It also states its operations are not within the new perimeter at the centre of the lawsuit.
Separately, the company denies media reports linking a notification about the North Pit to a stoppage of mining. It states it does not operate the North Pit and holds over 1,100 days without accidents with lost time.
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What should investors watch next?
Three markers will shape the next phase:
- The 25 October presidential run-off.
- The planned restart of the Phase 2 expansion in 2027.
- Progress toward 330,000 tonnes of annualised production by year-end 2027.
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