Green360 Secures First Commercial Supply Deal with Holcim for Low-Carbon Cement Product

Green360 Lands Major Supply Contract with Industry Giant Holcim

Green360 Technologies Limited (ASX:GT3) has crossed a significant commercial threshold by signing its first binding supply agreement with Holcim (Australia) Pty Ltd, a global heavyweight in construction materials. The deal sets the stage for Green360 to supply up to 4,800 tonnes of its proprietary low-carbon cement replacement product, MKX-CC, into Holcim’s Victorian concrete operations over the next 12 months.

This contract is more than just a sales milestone; it represents a robust endorsement of MKX-CC’s technical credentials and Green360’s emerging supply chain capabilities. The agreement follows less than three months after Green360 commenced commercial production in April 2026, signalling a swift transition from technology development to market execution. It also formalises terms previously outlined in a non-binding memorandum of understanding announced in May 2026.

Addressing a Structural Supply Shift in Supplementary Cementitious Materials

The Australian concrete industry is facing a fundamental supply disruption. Traditional supplementary cementitious materials (SCMs) like fly ash and blast furnace slag, by-products of coal-fired power generation and steelmaking, are becoming scarce as these industries decarbonise. This contraction threatens the availability of essential inputs for producing lower-carbon concrete, a critical material in infrastructure and building projects.

Green360’s MKX-CC product, a high-reactivity calcined clay, is positioned as a scalable, locally produced alternative to these declining SCMs. Executive Chairman Aaron Banks highlighted this dynamic, stating that the Holcim agreement is a “significant endorsement” of both the product quality and Green360’s ability to reliably supply at commercial scale. Banks emphasised that this is not a temporary shortage but a structural shift requiring new supply chains.

Strategic Production Partnerships and Market Validation

Green360’s path to commercialisation has been marked by strategic partnerships and production milestones. The company secured calcination capacity through a toll treatment agreement with Calix Limited (ASX:CXL) in March 2026, enabling capital-light access to up to 30,000 tonnes per annum of processing capacity. By April, Green360 completed its first commercial production run, producing 150 tonnes in a single continuous campaign at Calix’s Bacchus Marsh facility, with over 600 tonnes now distributed for commercial-scale validation across Victoria.

Holcim’s Chief Executive, George Agriogiannis, acknowledged the importance of introducing calcined clay supplements to future-proof the concrete supply chain amid declining availability of fly ash and slag. Holcim’s established presence in Victoria and commitment to sustainable construction materials, including its ECOPact low-carbon concrete range, align with the strategic value of this partnership.

Outlook and Growth Opportunities

Beyond the initial 4,800-tonne supply agreement, Green360 is actively pursuing further commercial discussions with other concrete producers. The company plans to complete a scoping study in Q4 2026 to evaluate building a dedicated commercial calcination facility adjacent to its existing kaolin operations in Pittong, Victoria. This could enable greater scale efficiencies and further solidify Green360’s position as a key supplier in a market facing structural SCM shortages.

MKX’s product suite also includes MKX Ultra Fine, designed to replace silica fume in high-strength concrete, expanding its addressable market amid similar supply constraints. The company’s strategic focus on building a next-generation supply chain for supplementary cementitious materials reflects a proactive response to evolving industry needs.