Australian Vanadium Advances Stage Two Proposal for 50 MW Kalgoorlie Vanadium Flow Battery Project

AVL's Vertical Integration Strengthens Kalgoorlie Battery Proposal

Australian Vanadium Limited operates as a vertically integrated resource company covering the vanadium value chain from extraction to energy storage applications. The company is progressing the Australian Vanadium Project at Gabanintha, Western Australia, one of the world’s most advanced vanadium projects. The JORC Code 2012-compliant mineral resource estimate reports 395.4 million tonnes at 0.77% vanadium pentoxide (V8O5), including a high-grade zone of 173.2 million tonnes at 1.09% V8O5.

AVL’s integration strategy includes processing vanadium to high purity, manufacturing vanadium electrolyte, and partnering with VSUN Energy to develop renewable energy and vanadium flow battery projects. VSUN Energy, established in 2016 and wholly owned by AVL, specializes in vanadium flow battery technology and is recognized for its long-duration energy storage expertise. This comprehensive capability across resource development, processing, electrolyte production, and energy storage uniquely positions AVL to pursue projects like the Kalgoorlie VBESS that require both vanadium supply and battery system proficiency.

50 MW / 500 MWh Battery Design Meets Goldfields Grid Security Needs

The Kalgoorlie VBESS proposal specifies a 50 MW / 10-hour (500 MWh) vanadium flow battery configuration. This long-duration energy storage system is designed to facilitate renewable energy integration, enhance network resilience, and improve energy security in the Goldfields region. The 10-hour duration enables longer storage periods than many alternative battery technologies, supporting grid stability amid extended renewable energy fluctuations.

The conceptual design integrates vanadium flow battery technology to address the Western Australian Government’s energy security and renewable transition goals in the Eastern Goldfields. Vanadium flow batteries allow independent scaling of power and energy capacity, making them ideal for long-duration grid support. AVL’s proposal reflects extensive technical and commercial development with consortium partners, advisers, and potential financiers, demonstrating a mature approach to project delivery.

Emphasis on Western Australian Content and Local Supply Chain Integration

AVL’s Stage Two proposal prioritizes a high proportion of Western Australian content, aligning with government requirements. This includes leveraging AVL’s integrated vanadium industry capabilities, locally based battery technology expertise, a strong regional industrial supply chain, and engagement with prospective financiers. The focus on local content supports government policy and AVL’s commitment to sustainable industry development in the state.

CEO Graham Arvidson highlighted that the project could connect Western Australian vanadium resources, local electrolyte manufacturing, project construction, and long-term energy storage operations. By integrating these elements, AVL aims to lay the foundation for a sovereign vanadium and long-duration energy storage industry in Western Australia, aligning the Kalgoorlie VBESS with broader economic development objectives.

Commercial Operation Targeted for 2029 Amid Government Evaluation

AVL’s delivery timeline targets commercial operation in 2029, consistent with the Western Australian Government’s Expression of Interest Stage Two Proposal Guidelines. This timeline depends on critical milestones such as preferred proponent selection, project financing, regulatory approvals, procurement, construction, and commissioning. AVL notes that submission of the Stage Two proposal does not guarantee selection or award of the Kalgoorlie VBESS project.

The Western Australian Government will evaluate all Stage Two proposals, including AVL’s, according to official guidelines. This competitive process will determine which proponent can best deliver the required energy storage solution. Investors should be aware that the outcome remains uncertain, and AVL’s advancement depends on government assessment and selection. The company previously progressed from Stage One, as noted in its update dated 2 January 2026.

Consortium Model Merges Global Battery Expertise with Local Resources

AVL advances its Stage Two proposal through a consortium combining its vanadium resource and Western Australian capabilities with globally recognized expertise in battery technology, engineering, construction, asset management, and energy market operations. This approach enables AVL to leverage specialized technical knowledge from partners experienced in battery system development and grid-connected energy storage, while maintaining a strategic role in the vanadium supply and energy storage value chain.

Significant contributions from consortium participants and advisers have shaped the Stage Two submission. This collaboration reflects AVL’s recognition of the need to blend vanadium industry expertise with established battery system development and operational skills to deliver a credible, investable long-duration energy storage solution. Engagement with prospective funding providers indicates ongoing efforts to secure financing to support project development through to 2029 commercial operation.

Vanadium Flow Battery Technology Drives Long-Duration Energy Storage Market

Vanadium flow battery technology is increasingly recognized for long-duration energy storage that supports renewable integration and grid stability. Unlike lithium-ion batteries, vanadium flow batteries allow independent scaling of power and energy capacity, enabling tailored grid support solutions. This makes them well suited for addressing renewable variability in the Goldfields, where wind and solar generation face seasonal and daily fluctuations.

The Western Australian Government’s Expression of Interest for the Kalgoorlie VBESS aligns with broader Australian policy goals to enhance grid security and renewable integration through long-duration storage. As variable renewable penetration grows across the National Electricity Market, reliable long-duration storage is vital for grid stability. AVL’s VSUN Energy subsidiary, established to develop the Australian vanadium flow battery market, is well positioned to capitalize on expanding demand.

Gabanintha Vanadium Project Provides Robust Resource Base for Supply

AVL’s Australian Vanadium Project at Gabanintha offers a substantial resource to support long-term vanadium supply for electrolyte manufacturing and project operations. The May 2024 mineral resource estimate totals 395.4 million tonnes at 0.77% V8O5, including a high-grade zone of 173.2 million tonnes at 1.09% V8O5. This high-grade zone comprises measured resources of 30.6 million tonnes at 1.14% V8O5, indicated resources of 74.8 million tonnes at 1.11% V8O5, and inferred resources of 67.9 million tonnes at 1.06% V8O5.

This resource base not only supports electrolyte needs for the Kalgoorlie VBESS but also underpins a broader domestic vanadium production industry. The scale allows AVL to supply electrolyte for multiple energy storage projects and vanadium for steel and industrial applications. AVL’s vertical integration across resource development, processing, electrolyte manufacturing, and energy storage project development differentiates its investment proposition from non-integrated battery technology providers.

Strategic Importance of Kalgoorlie VBESS for AVL’s Growth

The Kalgoorlie VBESS project offers a strategic opportunity for AVL to validate its integrated vanadium industry model and establish a foothold in the expanding long-duration energy storage market. Successful selection and delivery would demonstrate AVL’s vanadium flow battery technology and project capabilities, creating a reference project for future opportunities. The project’s emphasis on Western Australian content supports AVL’s goal of building a sovereign vanadium and energy storage industry in Australia.

Beyond the immediate project, Kalgoorlie VBESS could generate multiple value streams for AVL, including demand for vanadium electrolyte, showcasing VSUN Energy’s development and operational expertise, building government and energy market relationships, and generating revenue from ownership and operations. A successful grid-scale vanadium flow battery project could position AVL and VSUN Energy as preferred partners for future energy storage projects nationally and internationally.

Risks and Uncertainties in Western Australian Government Selection Process

Although AVL has advanced to Stage Two of the Expression of Interest process, selection as preferred proponent is not assured. The company faces competition from other entities submitting proposals. The WA Government’s evaluation criteria, weighting, and decision-making process are outside AVL’s control, creating uncertainty regarding selection.

If selected, AVL must negotiate and execute definitive agreements with the government, which may include conditions affecting project design, timeline, financing, or operations. The company emphasizes that the proposal remains subject to government evaluation, negotiations, and agreement execution. Additionally, financing the Kalgoorlie VBESS, especially given the 2029 commercial operation target, depends on securing acceptable funding amid evolving market conditions.

Next Steps and Investor Considerations

The immediate next phase involves the Western Australian Government’s evaluation of all Stage Two submissions. AVL plans to continue engagement with the government, though no timeline for evaluation outcomes was provided. Investors should watch for announcements on government feedback, requests for additional information or proposal modifications, and the preferred proponent selection.

Subsequent milestones include executing a definitive project delivery agreement, finalizing financing, submitting detailed engineering designs, and commencing procurement and construction. The 2029 commercial operation target allows a three-year development and construction window, dependent on government approvals and negotiations. Successful advancement of Kalgoorlie VBESS would validate AVL’s integrated vanadium strategy and long-duration energy storage expertise, with significant implications for its broader project pipeline and market positioning.