New Zealand's Aluminium Smelter (NZAS) is New Zealand's only aluminium smelter and is located on Tiwai Peninsula, across the harbour from Bluff in Southland.
NZAS is 79.36 per cent owned by Rio Tinto and 20.64 per cent owned by Japan's Sumitomo Chemical Company. NZAS is a tolling plant, producing primary aluminium in the form of ingot, billet and rolling block. The majority of the plant's alumina is supplied from the Yarwun and Queensland Alumina refineries at Gladstone in Queensland, Australia. Around 90 per cent of the aluminium produced at NZAS is exported.
In the 1960s, Tiwai Point was chosen as the location for an aluminium smelter for a number of reasons. Aluminium smelting requires a large and very reliable power source to continually supply electricity to reduction cells, and Tiwai Point's proximity to the then proposed Manapouri Power Station made it an attractive location. In addition, Tiwai Point was close to the deep sea port of Bluff and the well established infrastructure of the City of Invercargill. The smelter commenced operations in 1971.
NZAS contributes $406 million to the Southland economy (6.5 per cent of Southland's GDP) with export revenue of around $1 billion each year. Approximately 1,000 full time equivalent employees and contractors work at the smelter.
In January 2021 Rio Tinto secured an electricity arrangement to enable NZAS to continue operating until December 2024. This extension provides certainty to employees, the local community, and customers while providing more time for all stakeholders to plan for the future.
Invercargill, New Zealand
Phone : +64 3 218 5999
Private Bag 90110
Invercargill 9840, New Zealand
C/O 3 Spey Street
Invercargill, New Zealand
Level 10, 342 Lambton Quay
PO Box 1665
Phone: +64 4 916 1496
New Zealand Aluminium Smelter (NZAS) has today released a package of reports containing results of extensive environmental monitoring conducted at Tiwai Point and detailed plans for further monitoring that will be undertaken as part of the Closure Study ... Read more
Rio Tinto is helping to foster Koha Kai’s aim of encouraging a life of purpose for people living with disabilities by donating $90,000 to the organisation as part of its COVID-19 relief package ... Read more
New Zealand’s Aluminium Smelter (NZAS) has confirmed it will move the remaining Ouvea Premix currently stored at the former paper mill in Mataura to Tiwai Point to be stored as it awaits processing and export ... Read more
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. ... Read more
While the threat of COVID-19 is currently under control in New Zealand, the consequences of lockdown are still being felt by many New Zealand families. These include reports of a significant rise in calls to police and support services regarding family harm. ... Read more
Rio Tinto will start planning for the wind-down of operations and the eventual closure of New Zealand Aluminium Smelters (NZAS) following the conclusion of its strategic review which has shown the business is no longer viable given high energy costs and a challenging outlook for the Aluminum industry ... Read more
NZAS’ mental health and support services, previously offered exclusively to the smelter’s employees, will be extended to assist the residents of Invercargill and Bluff as part of Rio Tinto’s COVID-19 relief package. ... Read more
To be attributed to NZAS chief executive and general manager Stewart Hamilton: To support the health and safety of our employees at NZAS and in accordance with government directives in relation to containing the spread of Covid-19 we have implemented a number of new controls. ... Read more
NZAS remains committed to the 2018 agreement with Southland District and Regional Councils, Invercargill City Council, Gore District Council and the New Zealand Government to provide financial assistance in the removal and disposal of a fertilizer premix (Ouvea Premix) material currently stored at the Mataura Paper Mill and other facilities ... Read more
Rio Tinto will conduct a strategic review of its interest in New Zealand’s Aluminium Smelter (NZAS) at Tiwai Point, to determine the operation’s ongoing viability and competitive position ... Read more
Pacific Aluminium (New Zealand) Limited (PacAl NZ), a subsidiary of Rio Tinto, has reported its interest in the Tiwai Point smelter operated by New Zealand Aluminium Smelters Limited (NZAS)... ... Read more
Prime Minister Jacinda Ardern today officially re-opened Potline 4 at New Zealand’s Aluminium Smelter (NZAS) at Tiwai Point. Majority owner Rio Tinto has invested NZ$6 million this year to upgrade and restart Potline 4 at the smelter, adding 31,000 tonnes of production capacity. ... Read more
Pacific Aluminium (New Zealand) Limited (PacAl NZ) has reported its financial results relating to its interest in New Zealand's Aluminium Smelter (NZAS), showing underlying earnings of NZ$75 million for 2017, an increase of NZ$50 million on the previous year. ... Read more
New Zealand's Aluminium Smelter (NZAS) is delighted to welcome Stewart (Stew) Hamilton back to site in his new role of Chief Executive and site General Manager. Stew will begin in the role on 2 July 2018 and will have a two-week handover with Gretta Stephens in May. ...
After four years as the Chief Executive and General Manager of New Zealand's Aluminium Smelter (NZAS) Gretta Stephens has announced her resignation to join BlueScope Steel as Chief Executive New Zealand and Pacific Islands. ...
Pacific Aluminium (New Zealand) Limited (PacAl NZ) has reported its financial results relating to its interest in New Zealand’s Aluminium Smelter (NZAS), showing underlying earnings of NZ$25 million for 2016, a decrease of nearly NZ$30 million on the previous year. ... Read more
Pacific Aluminium (New Zealand) Limited (PacAl NZ) has reported its interest in New Zealand’s Aluminium Smelter (NZAS), showing underlying earnings of NZ$54 million for 2015, a decrease of NZ$2 million on the previous year. ... Read more
NZAS has today received the decision of the Supreme Court declining its application for leave to appeal the lieu days matter. ... Read more
Following 25 years helping to save New Zealand's iconic Kākāpō from extinction, New Zealand's Aluminium Smelter (NZAS) has made the difficult decision to step down as major sponsor of the Kākāpō Recovery Programme at the end of 2015 ... Read more