Green360 Technologies Limited (ASX:GT3) is an ASX-listed materials technology company developing and commercialising MKX — a high-performance calcined clay product (Metakaolin X) that serves as a supplementary cementitious material (SCM) for use in concrete, offering performance and sustainability advantages over conventional SCMs such as fly ash and blast furnace slag.

Recent Developments

In an ASX announcement dated 14 September 2026, Green360 Technologies reported that its MKX product has now been incorporated into more than 3,500 cubic metres of concrete across major Melbourne infrastructure projects, equivalent to more than 500 concrete truck loads. Commercial customers including Holcim Australia — the company's first commercial customer — and Eifers have purchased MKX for concrete pours across the Suburban Rail Loop, Eastern Freeway Extension, and civil works across metropolitan Melbourne. A further pour for taxiway pavement at Melbourne Airport is scheduled for the week of the announcement. The milestone represents the progression of MKX from laboratory and trial-scale validation into repeated, real-world use by established concrete and construction industry participants, building the commercial and operational track record required for broader market adoption. Green360 currently has access to up to 30,000 tonnes per annum of calcining capacity at Calix Limited's Bacchus Marsh Facility in Victoria, enabling market development ahead of Investment in dedicated large-scale production capacity.

Sector Context

The Australian concrete industry is facing increasing structural constraints in the Supply of traditional SCMs, particularly fly ash (a by-product of coal-fired power station operations, which are declining) and blast furnace slag (from iron and steel production, also subject to structural supply limitations). This is driving Demand for alternative SCMs, and calcined clays like MKX are well positioned as a widely available, performance-validated alternative. The construction of major infrastructure programs across Victoria provides a natural testing and adoption platform.

Risk and Uncertainty

MKX is in a market-creation phase, meaning the company must build industry confidence, specifications, and commercial Volume before investing in large-scale dedicated production capacity. The reliance on Calix's Bacchus Marsh facility limits production scale in the near term and introduces a dependency on a third-party facility. Adoption in infrastructure concrete requires engineering sign-off and specification processes that can be lengthy. Revenue from MKX sales at this stage of development is likely still modest relative to the company's overall cost base.

Catalysts to Watch

Any announcement of new commercial concrete supplier customers beyond Holcim and Eifers would signal broader market penetration. The completion of the Melbourne Airport taxiway pour and any feedback on product performance in that high-specification application will be noteworthy. Updates on production capacity planning — particularly any indication of investment in dedicated MKX production beyond the Calix arrangement — would signal the company's confidence in commercial scale-up.

Green360 Technologies' 3,500-cubic-metre milestone in real-world infrastructure concrete validates MKX's transition from a laboratory concept to a commercially deployed product, and the growing volume, frequency, and application breadth are building the track record needed to unlock the broader Australian concrete market.