Highlights

  • Green360 Technologies signed a non-binding MOU with Holcim Australia for the Supply of Eco-Clay into Victorian concrete operations.
  • The agreement represents Green360’s first named commercial customer for Eco-Clay.
  • Up to 4,800 tonnes of Eco-Clay could be supplied annually during the initial 12-month period.
  • The parties are targeting a binding supply agreement within 90 days.
  • The update follows recent milestones including the Calix Toll Treatment Agreement and first commercial Eco-Clay production.
  • More than 600 tonnes of Eco-Clay have already been produced and distributed for commercial-scale field validation.

Green360 Technologies (ASX:GT3) shares rose 8.33% to AUD 0.039 during the afternoon session on 12 May 2026 after the company announced a non-binding Memorandum of Understanding with Holcim (Australia) Pty Ltd for the supply of Eco-Clay into Holcim’s Victorian concrete operations.

Despite today’s gain, Green360 Technologies shares remain approximately 72% lower over the past year. The market reaction followed what appeared to be a favourable commercial update tied to the company’s low-carbon cement strategy and ongoing Eco-Clay commercialisation efforts.

The agreement marks Green360’s first named commercial customer for Eco-Clay, the company’s proprietary low-carbon cement replacement product. Management described the development as an important commercial milestone following the completion of initial commercial production at Calix Limited’s Bacchus Marsh Facility in April 2026.

Green360 Technologies is an Australian building materials company focused on developing lower-carbon cement alternatives designed to reduce emissions associated with traditional cement Manufacturing. The company has been progressing a commercialisation strategy centred on Eco-Clay, a calcined kaolinite material capable of partially replacing Portland cement in concrete production.

Holcim Agreement Marks First Commercial Customer

Under the newly announced MOU, Green360’s Wholly Owned Subsidiary, Suvo Minerals Australia Pty Ltd, will supply up to 4,800 tonnes of Eco-Clay annually to Holcim’s Victorian operations during an initial 12-month period.

The agreement is based on a fixed price per tonne and includes technical compliance standards tied to the product.

While the arrangement remains non-binding regarding final commercial supply terms, the parties intend to negotiate a binding supply agreement within 90 days.

Management stated that Eco-Clay supplied under the arrangement will be manufactured at Calix Limited’s Bacchus Marsh facility under the company’s previously announced Toll Treatment Agreement.

The company said the MOU reflects both the quality of Eco-Clay and the supply chain infrastructure developed alongside Calix to support commercial rollout.

Executive Chairman Aaron Banks stated that securing Holcim as the first commercial customer represented a significant milestone for the Business.

Management also suggested the agreement could support additional commercial discussions with other participants in the construction materials industry.

Holcim’s Position in Low-Carbon Construction

Holcim Australia is a subsidiary of the broader Holcim Group, one of the world’s largest building materials companies.

According to the company, Holcim operates across 45 markets globally and reported 2025 net sales of CHF 15.7 billion.

The group has been actively involved in the development of lower-carbon construction products, including its ECOPact low-carbon concrete range.

Holcim has also committed to achieving net-zero emissions across its operations by 2050 and continues increasing the use of supplementary cementitious materials within concrete production.

Green360 stated that Holcim’s decision to partner on Eco-Clay supply reflects alignment between Eco-Clay’s lower-carbon profile and Holcim’s broader sustainability strategy.

In Australia, Holcim supplies concrete, aggregates and related products into major infrastructure and construction projects.

Eco-Clay Commercialisation Progress Continues

The Holcim agreement follows several recent developments tied to Green360’s Eco-Clay commercialisation strategy.

In March 2026, Green360 entered into a binding Toll Treatment Agreement with Calix Limited for the commercial manufacture of Eco-Clay at Calix’s Bacchus Marsh facility.

The agreement provided the company with access to production capacity of up to 30,000 tonnes per annum through a Capital-light manufacturing pathway.

In April 2026, Green360 completed its first commercial production run of Eco-Clay, producing 150 tonnes during a single continuous run at the Bacchus Marsh facility.

The company stated that more than 600 tonnes of Eco-Clay have now been produced and distributed to concrete suppliers across Victoria for commercial-scale field validation activities.

Management described the Holcim agreement as the latest milestone in a sequence that has moved the company from development stage activities into early commercial supply.

Eco-Clay Positioned as Lower-Carbon Cement Alternative

Green360 outlined the environmental positioning of Eco-Clay as part of the announcement.

Eco-Clay is a high-reactivity calcined kaolinite, also known as metakaolin, capable of replacing up to 40% of Portland cement within concrete mixes.

The product is manufactured using kaolin by-products and residual materials generated during high-purity kaolin refining operations.

According to the company, Eco-Clay is heated to approximately 750 degrees Celsius during production, significantly lower than the roughly 1,450 degrees Celsius typically required during traditional Portland cement manufacturing.

Management stated that the lower energy intensity contributes to reduced carbon emissions relative to conventional cement production processes.

The company also highlighted the Circular Economy aspect of Eco-Clay production, with industrial by-products being converted into construction materials.

Commercial Validation Seen as Important Milestone

The company described the Holcim agreement as an important commercial benchmark for Eco-Clay.

Management indicated that the arrangement provides additional market validation for a scalable and locally produced low-carbon cement alternative within Australia.

The update also highlighted growing Demand across the construction sector for supplementary cementitious materials capable of lowering emissions while maintaining concrete performance standards.

The MOU further demonstrates early commercial interest following Green360’s transition from pilot production into commercial manufacturing.

What This Means for Investors

Green360 Technologies’ latest update appears broadly favourable from a commercial progress perspective.

The company secured its first named commercial customer for Eco-Clay, expanded its relationship with a major global building materials group and continued advancing its commercial manufacturing pathway through Calix.

The agreement with Holcim also follows a series of milestones achieved over a relatively short period, including the Toll Treatment Agreement, initial commercial production and commercial-scale product validation activities.

While the MOU remains non-binding at this stage, investors are likely to monitor whether Green360 successfully converts the arrangement into a definitive long-term supply agreement and secures additional commercial customers as Eco-Clay rollout progresses.

The update also reinforces investor focus on growing demand for lower-carbon building materials and the broader transition toward reduced-emission construction products.