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.