Tomago Aluminium Smelter Gains NSW Support as Power Costs Threaten Capacity

Tomago aluminium

Tomago aluminium smelter will receive additional support from the New South Wales government as Australia seeks to prevent the 600,000 t/yr facility from closing when its current electricity contract expires in 2028.

Tomago aluminium smelter support forms part of NSW's 2026-27 budget, alongside federal negotiations over a new long-term power purchase agreement. The governments are trying to create an electricity cost structure that keeps one of Australia's largest industrial power users commercially viable.

Tomago aluminium smelter owner Rio Tinto had previously warned that the operation could close because of unsustainable electricity costs. Losing the facility would remove substantial domestic primary aluminium capacity and weaken Australia's downstream manufacturing supply chain.

The proposed support illustrates a broader challenge facing energy-intensive industries: governments want to preserve strategic domestic production while electricity systems undergo a costly transition toward renewable generation and new grid infrastructure.

Power Agreement Becomes Critical to Tomago’s Future

Australia's federal and NSW governments agreed in December 2025 to pursue a long-term support package for Tomago.

The proposal includes a fixed-price power purchase agreement designed to provide greater certainty over one of the smelter's largest operating costs.

In return, Tomago would commit to investing A$1bn in the facility over ten years from 2028.

That investment could help modernise the smelter and improve its competitiveness while Australia's electricity market changes around it.

Primary aluminium smelting requires enormous volumes of continuous electricity. This makes smelters particularly vulnerable to high wholesale power prices, network costs and uncertainty around future supply.

Tomago's 600,000 t/yr capacity also gives the negotiations strategic importance beyond the individual company. Closure would materially reduce Australian primary aluminium production and increase reliance on imported metal for domestic industrial users.

The government is therefore effectively weighing the cost of supporting power-intensive manufacturing against the economic and strategic consequences of losing the capacity altogether.

Renewable Infrastructure Could Reshape Australia’s Aluminium Economics

NSW is also allocating A$291mn for road upgrades supporting transport of equipment into renewable energy zones.

This infrastructure investment is relevant to Tomago because the long-term competitiveness of Australian aluminium increasingly depends on access to large volumes of affordable renewable electricity.

Aluminium smelters can potentially become major anchor customers for renewable generation because they consume power continuously at industrial scale.

However, the transition requires sufficient generation, transmission and firming capacity to maintain stable electricity supply around the clock.

The state budget also reflects the continuing importance of fossil fuel revenues during that transition. NSW has raised its royalty forecasts following higher thermal coal prices triggered by the global gas supply shock.

Coal royalty revenue is expected to remain substantial over the coming years even as NSW invests heavily in renewable infrastructure.

This creates a transitional industrial model in which existing resource revenues help finance the power system required for future low-carbon manufacturing.

For aluminium, the outcome at Tomago could become a test case. If governments and industry can establish a competitive long-term electricity framework, Australia could preserve primary metal capacity while gradually reducing its carbon intensity.

The Metalnomist Commentary

Tomago demonstrates that the future of primary aluminium will increasingly be decided by electricity economics rather than ore availability. Australia has abundant resources and renewable potential, but retaining smelting capacity requires turning that energy advantage into reliable industrial power prices.

Tomago aluminium smelter power purchase agreement could keep Rio Tinto’s Australia output running

Australia, Rio Tinto

Australia is advancing a Tomago aluminium smelter power purchase agreement to keep operations running beyond 2028. Rio Tinto says power costs drive its long-term risk. As a result, the Tomago aluminium smelter power purchase agreement becomes a key test for industrial energy policy.

Fixed-price power deal ties support to capital spending

The federal government and New South Wales will work with Tomago Aluminium on the energy solution. Anthony Albanese said the plan centers on a fixed-price power purchase agreement. Meanwhile, the package includes a commitment to invest A$1bn over ten years.

Rio Tinto flagged closure risk as contracts expire

Rio Tinto warned in October that it could close Tomago when its current power contract ends in 2028. However, officials say a long-term agreement supports continued investment and jobs. The smelter produced 426,000 tonnes on a 100% basis in January–September 2025.

Australia framed the move as part of broader support for heavy industry under cost pressure. Tim Ayres defended industrial policy at Sydney Institute. Therefore, Tomago now sits alongside support discussions tied to Glencore and Nyrstar operations.

The Metalnomist Commentary

This Tomago aluminium smelter power purchase agreement signals how governments may underwrite energy-intensive metals capacity. However, the final terms will shape competitiveness versus imported aluminium. Therefore, investors should watch price indexing, duration, and decarbonisation conditions.

Rio Tinto Seeks Support for Australian Aluminium Smelter

Australian Al smelter

Power Costs Challenge Aluminium Operations

Rio Tinto is in talks with both the Australian federal government and the New South Wales (NSW) state government to secure support for its 600,000 t/yr Tomago aluminium smelter. The UK-Australian producer is renegotiating power purchase agreements to reduce costs, as energy expenses continue to rise across the state. Tomago accounts for about 12% of NSW’s total power use and plays a key role in grid stabilisation by adjusting production in line with electricity demand.

Officials confirmed discussions are underway, with NSW premier Chris Minns describing them as commercial negotiations. Industry and innovation minister Tim Ayers added that the government recognises Tomago’s strategic role but did not outline specific intervention measures. Meanwhile, energy minister Penny Sharpe acknowledged that soaring energy costs are straining many of the state’s energy-intensive industries.

Federal Incentives and Industry Outlook

Australia’s federal government has committed A$2bn ($1.3bn) under a low-emission production tax credit scheme, which will take effect in the 2028-29 fiscal year. The initiative aims to sustain aluminium production while encouraging cleaner processes. Rio Tinto has welcomed the scheme, calling it an important step toward maintaining Australia’s competitiveness in global aluminium markets.

Until the scheme is active, however, Rio Tinto must navigate high energy costs that threaten the viability of large-scale smelting operations. The company’s negotiations with power suppliers and government stakeholders will be critical in determining whether the Tomago smelter remains sustainable over the coming years.

The Metalnomist Commentary

Rio Tinto’s situation highlights the vulnerability of aluminium producers to volatile energy markets. While Australia’s tax credit scheme offers long-term relief, the immediate challenge is bridging the gap until 2028. The outcome at Tomago could set a precedent for how governments and power companies support energy-intensive industries under decarbonisation pressures.

Rio Tinto 2026 production guidance signals steady aluminium and higher alumina

Rio Tinto

Rio Tinto 2026 production guidance sets 2026 targets for bauxite, alumina, and aluminium. Rio Tinto 2026 production guidance keeps aluminium steady while it lifts alumina output. The company targets 58–61mn t of bauxite, 7.6–8mn t of alumina, and 3.25–3.45mn t of aluminium. However, tailings limits and power contracts shape the real supply outlook.

Bauxite and alumina tighten around operational constraints

Bauxite volumes will dip slightly as Rio Tinto eases Weipa output after a strong 2025. The company ran the Amrun mine above capacity for most of 2025. As a result, the complex lifted production by 8pc in January–September. Meanwhile, Rio Tinto plans a 2027 expansion at Norman Creek.

Alumina guidance rises, but Rio Tinto will curb output at Yarwun refinery in late 2026. The company expects 7.6–8mn t of alumina in 2026. However, it will cut the 3mn t/yr refinery by 1.2mn t/yr from October 2026. The site supplied about 39pc of Rio Tinto’s alumina in July–September.

Aluminium stays steady as capex and power risks grow

Aluminium output stays flat, yet the company invests heavily in low-carbon capacity. Rio Tinto plans 3.25–3.45mn t of aluminium in 2026. Meanwhile, it will expand the AP60 smelter in Canada to 220,000 t/yr. The $1.1bn project will add 96 pots in early 2026.

Australian power risk now threatens stable smelting volumes. Rio Tinto must secure a new power deal with Hydro Tasmania for Bell Bay smelter by end-2026. However, high energy costs could also force a 2028 closure decision at Tomago smelter in New South Wales. Meanwhile, Rio Tinto pursues growth through an India low-carbon smelter plan with AMG Metal and Mining. Therefore, Rio Tinto 2026 production guidance will face execution risk beyond the headline ranges.

The Metalnomist Commentary

Rio Tinto’s stable aluminium guidance hides rising constraints across refining and smelting. However, the AP60 expansion signals confidence in premium, low-carbon metal demand. Therefore, investors should watch tailings solutions and power negotiations more than volume targets.

South32 Mozal aluminium smelter review signals power risk

South32

South32 Mozal aluminium smelter review addresses severe electricity uncertainty in Mozambique. South32 Mozal aluminium smelter review includes a likely value write-down. South32 Mozal aluminium smelter review could trigger a production halt by March 2026.

Mozal faces expiring power contracts with HCB and Eskom in March 2026. The 580,000 t/yr smelter remains exposed to unresolved tariff and supply terms. Therefore, management will reassess the 2025–26 production target and asset value.

Power contract risk and production outlook

Negotiations with HCB, Eskom, and the government have dragged for six years. As a result, South32 warns of a potential shutdown if no deal emerges. The company expects a partial write-down in 2024–25 financial results. Meanwhile, civil unrest forced guidance withdrawal in late 2024. South32 later reset guidance to 350,000 t on an equity basis. It produced 314,000 t in 2023–24 on the same basis.

Mozal’s review spans cash costs, curtailment plans, and capex timing. However, firm terms could still stabilize output through 2026. Immediate focus remains contract certainty and reliable hydropower allocation. Therefore, customers should prepare for supply variability and lead-time changes.

Market context and global smelter pressures

Aluminium smelters consume massive power and face volatile tariffs. Similar pressures hit Rio Tinto’s Tomago and Tiwai Point sites. Energy costs and grid constraints drive curtailments and policy requests. Consequently, price risk and carbon strategies shape smelter competitiveness.

Downstream buyers weigh premiums, logistics, and ESG footprints. Secure contracts can de-risk billet and slab availability. Therefore, procurement teams should diversify sources and hedge exposures now.

The Metalnomist Commentary

Power certainty will decide Mozal’s utilization and margin path. A bankable contract could avoid curtailment and protect regional employment. Watch tariff structure, indexation clauses, and contingency planning through 2026.

Rio Tinto Boyne Smelters Secures A$2bn Australian Support for Renewable Aluminium

Rio Tinto

Rio Tinto Boyne Smelters will receive major government support as Australia moves to keep aluminium production viable during its energy transition. Canberra and Queensland will each provide A$1 billion over 10 years to support the 500,000 t/yr aluminium smelter at Gladstone.

The funding will be linked to production credits for aluminium made with renewable energy. In return, Rio Tinto will underwrite nearly A$7.5 billion in new energy generation and transmission in central Queensland.

Rio Tinto Boyne Smelters is strategically important because aluminium smelting is highly power-intensive. The agreement shows how Australia is using public funding to prevent industrial closures while shifting heavy industry away from coal-fired electricity.

Renewable Power Becomes Central to Aluminium Smelter Survival

The support package reflects the growing pressure on Australian metals processors. Rising energy costs and the phase-down of coal-fired generation have made long-term power security a critical issue for smelters, refiners, and steelmakers.

The plan to shift Rio Tinto Boyne Smelters toward renewable power was first flagged in 2024. Rio Tinto also indicated last year that the 1.68GW Gladstone coal-fired power plant could close on 31 March 2029.

BSL produced 370,000 tonnes of aluminium in 2025, below its 500,000 t/yr nameplate capacity. It remains Australia’s second-largest aluminium smelter after the 600,000 t/yr Tomago facility in New South Wales, which is also expected to receive major taxpayer support to remain open beyond 2028.

Australia Uses Industrial Policy to Protect Metals Capacity

Australian aluminium smelter support is becoming part of a wider industrial policy response. Federal and state governments have already pledged major funding for Whyalla steelworks, Glencore’s Mount Isa copper smelter, and Nyrstar’s smelters in Hobart and Port Pirie.

The Boyne agreement also connects aluminium production with carbon regulation. The facility is registered under Canberra’s safeguard mechanism and reported covered scope 1 emissions of 921,558t CO2e for the July 2023-June 2024 compliance year, below its baseline of 931,303t CO2e.

Rio Tinto owns 73.5% of Boyne, while YKK Aluminium, UACJ Australia, and Southern Cross Aluminium hold the remaining stakes. The ownership structure reinforces the smelter’s importance to both domestic and regional aluminium supply chains.

The Metalnomist Commentary

Australia is effectively deciding that aluminium smelting is too strategic to lose during the energy transition. The real test will be whether renewable power support can preserve industrial capacity without creating a permanent subsidy model.