Woodside and Alcoa signed a 31.1 PJ gas supply agreement for 2027–2030, supporting Western Australian industry, jobs, and energy security.
Australian energy producer Woodside Energy has entered into a new gas sale and purchase agreement with Alcoa of Australia, securing the supply of 31.1 petajoules (PJ) of domestic natural gas from Woodside’s Western Australian operations. The agreement will cover the period from 2027 through 2030 and represents another significant step in ensuring reliable energy availability for major industrial users across Western Australia.
The deal further reinforces the long-standing commercial relationship between Woodside and Alcoa, two companies that have played important roles in supporting the industrial and economic development of Western Australia. According to Woodside, the agreement highlights its continued commitment to supplying natural gas to the domestic market and helping meet the energy requirements of key manufacturing and processing industries in the state.
Mark Abbotsford, Woodside’s Executive Vice President of Marketing and Chief Commercial Officer, welcomed the agreement and emphasized its importance for both regional industries and the broader energy market. He noted that Woodside remains dedicated to bringing additional gas supplies to Western Australia, thereby supporting economic activity and strengthening the state’s energy security over the coming years.
Under the agreement, the contracted gas volumes will be delivered to Alcoa’s alumina refineries located in Western Australia. These facilities are among the state's major industrial operations and provide employment opportunities for thousands of workers. The refineries produce alumina, which serves as the primary raw material for aluminum production. Aluminum remains a critical material used extensively across construction, transportation, manufacturing, renewable energy infrastructure, and numerous industrial applications worldwide.
Woodside highlighted that the agreement demonstrates the effectiveness of Western Australia’s domestic gas market framework, which continues to facilitate mutually beneficial outcomes for both producers and consumers. The company stated that the market environment allows energy suppliers to invest in production while ensuring that industrial customers have access to reliable and competitively supplied gas resources.
The company also pointed to the continued success of Western Australia’s domestic gas policy, which has helped create stable and predictable conditions for long-term investment and supply agreements. Such policy certainty enables gas producers to develop and deliver new supplies while providing major industrial consumers with confidence in their future energy availability. Woodside noted that natural gas continues to play an important role in supporting lower-emission energy use within several industrial processing sectors.
The agreement follows a key regulatory development that occurred in December 2025, when the Western Australian State Government approved an extension of operations for the Pluto-Karratha Gas Plant Interconnector. This approval allows additional gas sourced from the Pluto facilities to be processed through existing infrastructure at the Karratha Gas Plant. By utilizing available processing capacity, the project enables new domestic gas volumes to reach the market more efficiently and supports the rapid delivery of contracted supply agreements such as the one signed with Alcoa.
Woodside has maintained a strong presence in Western Australia’s domestic gas market for more than four decades. During 2025, the company’s share of natural gas production in the state reached approximately 90.3 petajoules, accounting for around 21% of Western Australia’s total domestic gas supply. This significant contribution underscores Woodside’s role as one of the state’s major energy suppliers.
Looking ahead, Woodside indicated that it remains actively engaged with customers across Western Australia regarding additional domestic gas supply opportunities beyond 2026. The company continues to explore ways to support industrial growth, energy reliability, and long-term economic development through secure natural gas supply arrangements. The latest agreement with Alcoa reflects these objectives while ensuring that one of Australia’s key alumina producers has access to dependable energy resources through the end of the decade.
Market Impact: The newly signed gas supply agreement between Woodside and Alcoa is expected to have a broadly positive impact on the alumina and aluminum value chain in Western Australia. By securing 31.1 PJ of natural gas supply for 2027–2030, Alcoa gains greater certainty regarding energy availability and operating costs for its alumina refineries. Stable gas supplies reduce the risk of production disruptions and support consistent alumina output, which in turn benefits downstream aluminum production. The agreement also strengthens Western Australia's industrial competitiveness and reinforces long-term investment confidence in energy-intensive sectors.
From a chemical commodities perspective, the immediate impact on prices tracked by ChemAnalyst is likely to be limited, but the move carries a mildly bearish to stable outlook for energy-linked products in the region. Reliable domestic gas availability reduces concerns over fuel shortages and sudden energy cost spikes, helping to contain production costs for chemicals and industrial materials that rely on natural gas as an energy source. Commodities such as ammonia, methanol, hydrogen, and other gas-intensive petrochemical intermediates may experience improved cost stability rather than significant price increases.
Additionally, sustained gas availability could support steady operating rates across industrial facilities, reducing supply-side uncertainties. Overall, the agreement is expected to promote stable pricing conditions for energy-dependent chemical commodities while enhancing supply security and operational predictability in the Western Australian industrial market.
