Finding better ways to provide the materials the world needs
Our business
We operate in 35 countries where our 60,000 employees are working to find better ways to provide the materials the world needs
Our purpose in action
Continuous improvement and innovation are part of our DNA
Innovation
The need for innovation is greater than ever
We supply the metals and minerals used to help the world grow and decarbonise
Iron Ore
The primary raw material used to make steel, which is strong, long-lasting and cost-efficient
Lithium
The lightest of all metals, it is a key element needed for low-carbon technologies
Copper
Tough but malleable, corrosion-resistant and recyclable, and an excellent conductor of heat and transmitter of electricity
Bringing to market materials critical to urbanisation and the transition to a low-carbon economy
Oyu Tolgoi
One of the most modern, safe and sustainable operations in the world
Rincon Project
A long-life, low-cost and low-carbon lithium source
Simandou Project
The world’s largest untapped high-grade iron ore deposit
Providing materials the world needs in a responsible way
Climate Change
We’re targeting net zero emissions by 2050
Nature solutions
Our nature-based solutions projects complement the work we're doing to reduce our Scope 1 and 2 emissions
Enabling ESG transparency
Our START™ initiative tracks traceability and responsible production of Rio Tinto materials.
We aim to deliver superior returns to our shareholders while safeguarding the environment and meeting our obligations to wider society
Reports 2024
Download our 2024 suite of reports, including our 2024 Taxes and Royalties Paid Report, detailing $8.4 billion of taxes and royalties paid globally during the year
Get the latest news, stories and updates
Things You Can't Live Without
Our podcast discussing what needs to happen to create a sustainable future for the everyday items we have come to rely on
Refuelling the mining industry
How can we power the world’s biggest machines with new fuel solutions?
Forging a low-carbon future
How we're working to decarbonise iron ore and steel
Discover more about life at Rio Tinto
Graduates and students
If you want to drive real change, we have just the place to do it
Empowering families with flexibility
Supporting new parents of any gender with equal access to parental leave
Available jobs
Join our team
New Zealand’s Aluminium Smelter (NZAS) converts alumina into aluminium using renewable hydroelectricity, resulting in one of the lowest carbon footprints for an aluminium smelter in the world.
The smelter is located on Tiwai Peninsula in Southland and the majority of the plant's alumina is supplied from our Yarwun and Queensland Alumina Limited refineries. Around 90% of the aluminium produced at NZAS is exported.
In May 2024, NZAS signed 20-year electricity arrangements that secured the future of the Tiwai Point aluminium smelter to continue competitively producing high-purity, low-carbon metal, backed by a diversified mix of renewable electricity from New Zealand’s South Island.
In 2022, we signed a Memorandum of Understanding (MoU) with Ngāi Tahu – the primary iwi with guardianship responsibilities over the South Island of New Zealand – which focuses on positive environmental outcomes for NZAS.
The agreement lays a path for us to work together on plans to remove waste, conduct environmental monitoring, and remediate NZAS – a priority for both mana whenua and Rio Tinto.
We have also identified 34 cultural heritage sites located on land owned and managed by the smelter. They include European burials and structures, as well as Māori sites such as middens, ovens, burials and an adze workshop. Wahi tapu, wahi taoka and mahinga kai are also present on Tiwai Peninsula. We have a Cultural Heritage Management System Plan in place to look after these important sites.
MELBOURNE, Australia--(BUSINESS WIRE)-- Rio Tinto’s previously announced acquisition of Sumitomo Chemical Company’s (SCC’s) 20.64% interest in New Zealand Aluminium Smelters (NZAS) was completed on 1 November 2024. NZAS owns and operates the Tiwai Point aluminium smelter in New Zealand. Following completion of the transaction, NZAS is now wholly owned by Rio Tinto. Rio Tinto Aluminium Pacifi
MELBOURNE, Australia--(BUSINESS WIRE)-- New Zealand Aluminium Smelters (NZAS) has signed 20-year electricity arrangements that secure the future of the Tiwai Point aluminium smelter to continue competitively producing high-purity, low-carbon metal, backed by a diversified mix of renewable electricity from New Zealand’s South Island. NZAS, which owns and operates Tiwai Point, has signed contr
MELBOURNE, Australia--(BUSINESS WIRE)-- Rio Tinto has reached an agreement on a new electricity agreement with Meridian Energy that allows New Zealand’s Aluminium Smelter (NZAS) to continue operating the Tiwai Point aluminium smelter until December 31, 2024. The extension provides certainty to employees, the local community and customers while providing more time for all stakeholders to plan f
NZAS is proud to have its metal marketed under Rio Tinto's RenewAl brand. As the world moves towards a lower carbon future, the RenewAl brand can help NZAS take advantage of growing demand for high-quality aluminium to be used in more sustainable, low-carbon products. RenewAl certifies NZAS metal as being some of the lowest carbon in the world.
We have been a member of the Aluminium Stewardship Initiative (ASI) since January 2015, and NZAS has been certified against the ASI Performance Standard and ASI Chain of Custody Standard as part of our commitment to responsible production and sourcing of aluminium.
We strive to establish and maintain community relationships that positively contribute to the quality of life where we live and work, and by supporting partnerships that are mutually beneficial and deliver long-term, sustainable results.
We have been the major sponsor of the annual NZAS Southland Science & Technology Fair since 2003. Students are required to investigate a topic of their choice using a scientific method of hypothesis, method, test and conclusions.
We also have a longstanding partnership with Southland Girls' High School, designed to encourage students to pursue careers in engineering and science. Each year we host students at the smelter for a week so they can learn about career options and work on a project gathering, testing and analysing data. Almost half of the participants have gone on to study engineering at university.
In addition to offering in-kind support, NZAS also donated $480,353 in 2023 to 32 non-profit organisations in the Southland community.
As part of our agreement with Ngāi Tahu $2 million has been awarded in 2023 and 2024 to support 23 local, cultural, and business projects.
We’re committed to an inclusive environment where people feel comfortable to be themselves. We want our people to feel that all voices are heard, all cultures respected and that different perspectives are welcomed and valued.
Tiwai is a place where we treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, sexual orientation or anything else that makes us different.
We want a diverse workplace – not only because it is good for our business, but because it is the right thing to do.
We strive wherever possible to buy locally and employ locally, investing in our community by supporting economic activity and contributing towards a sustainable future.
We also focus on training, apprenticeships and employment opportunities. Our graduate program is designed to attract and develop employees to bring fresh thinking, different perspectives and new skill sets.
Tiwai Road Invercargill New Zealand
T: +64 3 218 5999
NZAS Private Bag 90110 Invercargill New Zealand
E: nzascommunityfeedback@riotinto.com
T: +64 21 174 1138 (Monday to Friday, 8am–5pm)