Keeping Tomago Open Is an Investment in Australia’s Energy Future
The decision to keep the Tomago aluminium smelter operating beyond 2028 has been widely described as a $2.5 billion bailout. That description is politically convenient but economically incomplete.
The federal and New South Wales governments will jointly support a 10-year electricity arrangement for Australia’s largest aluminium smelter. Tomago will enter a power purchase agreement from January 2029 to the end of 2038, with its electricity supply becoming 100 per cent renewable from 2033. The NSW contribution is capped at $1.225 billion, while the federal arrangements include a mechanism for revenue to return to taxpayers when aluminium prices are high (1).
Tomago Aluminium will invest at least $1.1 billion in the smelter, including $100 million for decarbonisation and improved demand-response capability. Once fully supplied by renewable electricity, Rio Tinto expects the smelter’s Scope 1 and 2 operating emissions to fall by 7.1 million tonnes each year (2).
Why Tomago is so important
Tomago produces up to 590,000 tonnes of aluminium annually and directly employs around 1,000 people, while supporting an estimated 5,000 indirect jobs. It is also Australia’s largest single electricity user, consuming approximately 10 per cent of New South Wales electricity (3).
Its importance extends beyond employment. Australia is one of relatively few countries with an end-to-end aluminium supply chain, from bauxite mining and alumina refining through to smelting and advanced manufacturing. Allowing its largest smelter to close would weaken domestic manufacturing capability and increase Australia’s exposure to overseas supply chains.
Aluminium is also essential to the energy transition. It is used in transmission lines, solar panels, wind turbines, electric vehicles and battery systems. Closing a major Australian producer while global demand for lower-emissions aluminium grows would have been economically and environmentally short-sighted.
Why “bailout” is the wrong description
Calling the agreement a bailout suggests taxpayers are simply covering the losses of a private company. The arrangement is broader. It combines industrial policy, energy procurement, regional employment and an investment catalyst.
Tomago requires a near-continuous load of approximately 950 megawatts. Supplying it is expected to underpin almost 3 gigawatts of renewable generation and firming capacity (4). A customer of this size can provide the contracted revenue renewable developers need to secure project finance and reach a final investment decision.
Analysis cited by Renew Economy suggests the agreement could unlock between $8 billion and $10 billion of renewable investment and support 2,400 to 3,900 direct jobs during peak construction (5).
The package is therefore purchasing more than continued aluminium production. It retains manufacturing capability, protects regional employment, creates demand for new renewable infrastructure and supports the broader electricity transition. Tomago’s ability to reduce consumption during periods of system stress may also allow it to operate as a significant source of flexible demand.
Criticisms of the plan
Every major government-backed investment attracts criticism, and the Tomago agreement is no exception.
The Australian Financial Review has criticised the absence of a publicly available business case, the lack of detail around the federal government’s potential exposure and uncertainty about whether Tomago will remain commercially viable once the agreement ends in 2038 (6).
Angela Macdonald-Smith has also reported that the federal contribution is not capped in the same way as the NSW commitment. The smelter could therefore require more taxpayer support if electricity prices, aluminium prices or other commercial assumptions move unfavourably. Questions have also been raised about whether taxpayers are effectively bridging the difference between the market price of electricity and the price Tomago can afford (7).
These concerns are legitimate. The agreement requires transparency, competitive electricity procurement and clear accountability for taxpayer exposure. Investors should also recognise that government support does not eliminate operating, commodity-price or energy-market risk.
However, these criticisms do not make the agreement a simple corporate handout. Governments regularly support infrastructure and strategically important industries where the wider economic benefits extend beyond the immediate commercial return. The relevant question is whether the employment, industrial capability, emissions reduction and new investment generated by the agreement justify its cost.
Who are the winners?
The immediate winners are Tomago’s workers, contractors, suppliers and the Hunter economy. Rio Tinto and its joint-venture partners gain longer-term operating certainty, while Australia retains a strategically important export industry.
Renewable energy developers may be the largest investment beneficiaries. As reported by Renew Economy Potential suppliers include projects being developed by Squadron Energy, Origin Energy, AGL, Tilt Renewables, ACEN, Someva Renewables, Spark Renewables and Goldwind. AGL’s proposed 500 MW, 2,000 MWh battery near Tomago may also be well positioned to provide firming capacity.
As Renew Economy reminds us, the eventual allocation of contracts remains uncertain. Snowy Hydro is expected to manage the renewable energy portfolio, and developers have called for a competitive process involving multiple projects rather than excessive concentration with one supplier. Investors must distinguish between companies positioned to participate and those that ultimately secure binding contracts.
Other electricity users could also benefit if the arrangement brings additional generation and storage into the grid. Capacity constructed to supply Tomago may strengthen reliability and place downward pressure on wholesale electricity prices over time.
How investors may benefit
The investment opportunity is not the government assistance itself. It is the private capital expenditure the agreement can mobilise.
Long-term offtake contracts can transform renewable projects from speculative developments into financeable assets. This creates opportunities across project equity, infrastructure debt, wind and solar generation, battery storage, transmission, engineering, construction and grid-management technology.
The precedent may be equally significant. as reported by the AFR, Rio Tinto has sought a similar agreement for its Bell Bay aluminium smelter in Tasmania. Future arrangements could apply to steel, copper, critical minerals, data centres and other electricity-intensive industries requiring reliable, competitively priced renewable energy.
For investors, these agreements can reduce demand risk, improve revenue visibility and unlock projects that might otherwise remain stalled. However, many of the strongest opportunities may be unlisted, illiquid and difficult for individual investors to access. Deal flow may also depend on relationships with developers, financiers and project owners.
This increases the value of diversified investment vehicles capable of assessing individual projects, negotiating access and spreading exposure across technologies, counterparties and development stages.
The Bottom Line
Keeping Tomago open is not simply about preserving an ageing industrial facility. It connects Australia’s manufacturing future with the construction of renewable generation, energy storage and flexible demand.
The agreement deserves scrutiny, but dismissing it as a bailout ignores the billions of dollars in private investment it may unlock.
For investors, Tomago is another sign that Australia’s energy transition will be driven by long-term contracts, coordination between government and industry, and capital committed to real environmental assets.
References
(1) Albanese A et al., Australian Government, $2.5 billion investment in the Hunter’s future, 13 August 2026. https://www.pm.gov.au/media/25-billion-investment-hunters-future
(2) Rio Tinto, Rio Tinto welcomes agreement to secure long-term future of Tomago Aluminium, 13 August 2026. https://www.riotinto.com/en/news/releases/2026/rio-tinto-welcomes-agreement-to-secure-long-term-future-of-tomago-aluminium
(3) Clifford B, ABC News, Federal and NSW governments to split $2.5 billion Tomago Aluminium bailout, 12 August 2026.
https://www.abc.net.au/news/2026-08-12/aluminium-smelter-bailout-cost-two-and-half-billion-dollars/107030522
(4) Parkinson G, Renew Economy, Australia’s biggest aluminium smelter gets $2.5 billion to help transition from coal to wind and solar, 12 August 2026.
https://reneweconomy.com.au/australias-biggest-aluminium-smelter-gets-2-5-billion-to-help-transition-from-coal-to-wind-and-solar/
(5) Parkinson G, Renew Economy, Tomago won’t be 100 pct renewable until 2033, but Squadron and others want to see multiple supply deals, 13 August 2026.
https://reneweconomy.com.au/tomago-wont-be-100-pct-renewable-until-2033-but-squadron-and-others-fear-origin-market-dominance/
(6) The Australian Financial Review, Tomago bailout is short on the business case, 13 August 2026.
https://www.afr.com/politics/federal/tomago-bailout-is-short-on-the-business-case-20260812-p60njn
(7) Macdonald-Smith A, The Australian Financial Review, Tomago smelter may need more taxpayer funds despite $2.5b bailout, 13 August 2026.
https://www.afr.com/companies/manufacturing/national-interest-paramount-in-2-5b-tomago-smelter-bailout-20260813-p60o0v
Important Information
EnviroInvest Pty Ltd ACN 685 107 957 (“EnviroInvest”) is an Authorised Representative of Daylight Financial Group Pty Ltd ACN 633 984 773 (“DFGPL”) which is the holder of an Australian Financial Services Licence (AFS Licence No. 521404).
Information in this commentary is current as at date prepared unless otherwise stated. However, please bear in mind that investments can go up or down in value, and that past performance is not a reliable indicator of future performance. For more Important Information please refer to the Disclaimer section of this website.
This communication may contain general financial product advice. It has been prepared without taking into account your personal circumstances, and you should therefore consider its appropriateness in light of your objectives, financial circumstances and needs before acting on it.
If our advice relates to the acquisition or possible acquisition of a particular financial product, you should obtain a copy of and consider the Information Memorandum (IM) or Product Disclosure Statement (PDS) before making any decision.