Calix

What Calix does

Calix Limited is an Australian environmental technology company founded in 2005 and publicly listed on the Australian Securities Exchange (ASX:CXL), headquartered in Pymble, New South Wales. The company has developed a patented platform technology for the indirect heating of minerals that enables electrification of industrial processing, capture of unavoidable CO2 process emissions, and production of green mineral derivatives. Calix organises its operations around three business units: Leilac (a 93%-owned subsidiary focused on decarbonisation of cement and lime through indirect-heating kilns that separate and capture CO2 from limestone without additional chemicals), Sustainable Processing (covering ZESTY green iron technology using green hydrogen in renewably powered reactors, electric calcination for lithium and alumina processing, and the BATMn battery materials reactor), and Magnesia (producing ACTI-Mag magnesium hydroxide products and the Flex Dose monitoring system for wastewater, agriculture, and odour control).

Calix monetises its technology through a combination of product sales (ACTI-Mag water treatment chemicals, calcined clay as supplementary cementitious material), toll processing services (e.g., processing Green360 Technologies' kaolin feedstock at the Bacchus Marsh Technology Centre), engineering and development services (customer-funded studies such as the East Asian cement producer contract), and a capital-light technology licensing model via Leilac that charges royalties of the greater of US$3/tonne of CO2 captured or 3.5% of the prevailing CO2 price. The company serves heavy industrial customers across cement, lime, iron and steel, lithium and critical minerals, alumina, direct air capture, water utilities, and agriculture, with anchor partnerships including Rio Tinto (ZESTY), Pilbara Minerals (lithium calcination), Adani Group/Ambuja Cements (cement decarbonisation), Norsk Hydro (alumina), Heirloom (direct air capture), and Green360 Technologies (calcined clay). H1 FY26 total products and services revenue was $16.3 million, up 21% year-on-year, with the magnesia business growing 48% YoY to $15.8 million. Calix holds 32 patent families covering its core technology and applications, is ISO 9001:2015 certified, and is led by Managing Director and CEO Phil Hodgson alongside subsidiary CEOs Daniel Rennie (Leilac) and Chris Ormston (ZESTY and Sustainable Processing).

Name

Calix

Legal name

Calix Limited

Website

https://calix.global

Company type

Public

Founded year

2005

Operating status

Operating

Headcount range

101–250 employees

Short description

Calix Limited is an Australian environmental technology company that has developed a patented indirect heating platform for industrial decarbonisation, serving heavy industry in cement, lime, iron and steel, lithium, alumina, water, and agriculture through technology licensing, toll processing, and chemical products.

Ownership category

akta.pro rank

Product category

Industrial Decarbonisation Technology

NAICS

Cement Manufacturing (327310), Clay Building Material and Refractories Manufacturing (327120), Cement and Concrete Product Manufacturing (3273)

SIC

Industrial Process Furnaces & Ovens (3567), Cement, Hydraulic (3241), Structural Clay Products (3250)

akta.pro primary industry

Industrial Electrified Kilns & Calcination Solutions (Cement/Lime/Glass Specific) (EUABAJAL)

Keywords

• Industrial decarbonisation technology
• Carbon capture solutions
• Electric calcination systems
• Green iron production
• Wastewater treatment chemicals

Headquarters

HQ city

Pymble

HQ country

Australia

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Products & Services Revenue: Sale of magnesia products (ACTI-Mag for water treatment), calcined clay, and toll processing services. H1 FY26 total products and services revenue of $16.3 million, up 21% year-on-year.
2. Technology Licensing & Royalties: Licensing of Calix/Leilac technology to industrial partners. Leilac receives royalties based on CO2 captured (floor price: greater of US$3/tonne of CO2 separated, or 3.5% of prevailing CO2 price). Capital-light model with no capital contribution required from Calix.
3. Toll Processing: Toll processing of customer feedstock using Calix's plant and technology (e.g., calcined clay toll processing with Green360 Technologies at Bacchus Marsh). Customer-funded with Calix providing calcination capacity.
4. Engineering & Development Services: Engineering services, material testing, and commercial production capabilities provided to partners. Second cement project in East Asia includes immediate payment for Leilac's engineering services.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Calix is an environmental technology company that develops and commercialises a patented indirect-heating calcination platform for industrial decarbonisation. The company sells ACTI-Mag magnesium hydroxide products for wastewater treatment and agriculture, calcined clay as a supplementary cementitious material for lower-carbon concrete, and licenses its Leilac indirect heating kiln technology and ZESTY green iron technology to heavy industrial customers globally. It also operates toll processing and engineering services at its Bacchus Marsh Technology Centre.

Product overview

Calix is an environmental technology company operating a platform-plus-business-units architecture. The core platform is Calix's patented indirect heating technology that enables electrification of industrial processing, CO2 capture, and green mineral processing. The company operates three primary business units: (1) Leilac (93% owned subsidiary) focused on cement and lime decarbonisation through carbon capture kiln technology; (2) Sustainable Processing covering iron & steel (ZESTY), alumina, and lithium applications; and (3) Magnesia providing ACTI-Mag water treatment products and Flex Dose monitoring systems. Key products include ZESTY green iron technology, LEILAC carbon capture plants (LEILAC-1, LEILAC-2), the BATMn battery materials reactor, calcined clay as a supplementary cementitious material, and the Lithium Mid-Stream Demonstration Plant. The company serves multiple industries including cement, lime, iron & steel, lithium & critical minerals, alumina, direct air capture, water, agriculture, and batteries.

Differentiator

Problem solved

Functional benefit

Brands

• Leilac: Calix's 93% owned subsidiary focusing on decarbonisation of cement and lime industries
• ZESTY
• ACTI-Mag
• BATMn

Products and services

• ZESTY (Zero Emissions Steel TechnologY) Breakthrough green iron technology using green hydrogen in a renewably powered reactor to produce green iron, offering a scalable pathway to zero-emissions steel production. Capable of converting low to mid-grade iron ores into green iron using electric heating and hydrogen reduction. Licensed to industrial steel producers including Rio Tinto via a Joint Development Agreement.
• ACTI-Mag Concentrated stabilised suspension of magnesium hydroxide providing a safe, cost-effective and environmentally friendly alternative to caustic soda for wastewater treatment. Delivers alkalinity and pH adjustment, H2S and odour control, fat/oils/grease management, and phosphorus removal. Reduced H2S by 95% and methane by 66% in trials with an Australian water utility. Sold directly to water utilities and agricultural customers including a three-year contract with a major U.S. agricultural customer worth up to $10 million per annum.
• Flex Dose System Proprietary mobile dosing system paired with continuous hydrogen sulfide and methane monitoring for responsive and optimised wastewater treatment. Provides real-time H2S and pH data to drive automated dosing of ACTI-Mag, achieving H2S reduction below corrosion thresholds and methane below LEL in field deployments.
• BATMn Reactor Advanced battery materials reactor located in Victoria, Australia developing high surface area Lithium Manganese Oxide materials with unique layered morphology for high performance, affordable, and more recyclable lithium-ion batteries.
• Calcined Clay Supplementary cementitious material (SCM) produced through Calix's indirect heating flash calcination technology that partially replaces conventional cement clinker to reduce the carbon footprint of cement and concrete products. Produced at the Calix Technology Centre in Bacchus Marsh via the CFC15k flash calciner under toll processing agreements with partners such as Green360 Technologies.
• Leilac Indirect Heating Kiln Technology (Licensing) Licensed through the 93%-owned Leilac subsidiary, this indirect heating kiln technology separates and captures CO2 from limestone without additional chemicals, can be powered by renewable electricity, and keeps process CO2 emissions pure for lowest-cost capture. Applied to cement, lime, and Direct Air Capture applications. Royalty-based licensing model with capital-light deployment. Partners include Adani/Ambuja Cements, Heidelberg Materials, and Heirloom.
• Toll Processing Services Toll processing of customer feedstock using Calix's plant and technology. Customer-funded with Calix providing calcination capacity under contracted unit pricing, generating recurring revenue without capital contribution from Calix.
• Engineering and Development Services Engineering services, material testing, and commercial production capabilities provided to industrial partners. Includes feasibility studies, pilot test campaigns, and engineering design support for technology deployment, with immediate payment terms upon contract signing for projects such as the East Asian cement producer engagement.

Quantifiable outcome

• ZESTY technology aims to reduce hydrogen consumption in iron production and contribute to eliminating the 7-8% of global CO2 emissions from steelmaking
• +5 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eight partnerships are on record, tiered core and major.

• Adani Group / Ambuja CementscoreStrategic or Co-development Partner · 22 July 2026Joint Development Agreement between Leilac and Adani Group's Ambuja Cements to develop a commercial-scale project at the Sanghi cement plant in Gujarat, India. Ambuja Cements is among the top ten cement producers globally with over 100 million tonnes of annual production. Partnership targets deployment of Leilac's hybrid electric heating and carbon capture technology. Zero capital contribution required from Calix or Leilac.
• Norsk HydromajorStrategic or Co-development Partner · 22 July 2026Partnership for alumina processing using Calix's electric calcination technology. Completed comprehensive pilot-scale electric calcination test campaign using representative feed material from Hydro's Alunorte refinery in Brazil. Calix's fully electric pilot calciner successfully produced smelter-grade alumina meeting Hydro's product specifications. Results provide engineering data for future plant designs.
• BoralmajorStrategic or Co-development Partner · 1 July 2026Collaboration on calcined clay concrete trials. Successful field trial as part of the M1 Pacific Motorway extension in New South Wales, Australia using calcined clay cement blend. Built on product development and R&D project with Calix, UTS, Transport for NSW and SmartCrete CRC. Demonstrated use of Calix-produced calcined clay in commercial concrete applications.
• East Asian Cement ProducermajorStrategic or Co-development Partner · 1 July 2026Customer-funded engineering services contract with a cement producer in East Asia to assess deployment of Leilac's hybrid electric heating and carbon capture technology, targeting capture and utilisation of approximately 100,000 tonnes of CO2 per annum. Zero capital required from Calix or Leilac, with all project costs fully customer funded including immediate payment for engineering services.
• Green360 Technologies (ASX:GT3)majorStrategic or Co-development Partner · 1 March 2026Toll processing agreement for commercial calcined clay production at Calix Technology Centre, Bacchus Marsh, Victoria. Clay feedstock from Green360's kaolin operation in Pittong, Victoria toll processed using Calix's CFC15k flash calciner. Supports commercial production of calcined clay products for lower-carbon cement and concrete applications. Green360 has a 19% increase in contracted unit pricing and forecasts annual revenue of A$2.5-$2.9 million.
• Pilbara MineralscoreStrategic or Co-development Partner · 24 February 2026Joint venture for decarbonised lithium refining at Pilbara Minerals' Pilgangoora Operation in Western Australia. Calix provides electric calcination technology for sustainable spodumene processing. A$20m in Australian Government funding under Modern Manufacturing Initiative supported the project. Restructured in 2026 so Pilbara Minerals assumed full ownership of the midstream plant and Calix received A$11.4m cash upfront while retaining exposure to potential third-party licensing revenues. Demonstration plant officially opened in 2026.
• Rio TintocoreStrategic or Co-development Partner · 16 November 2025Joint Development Agreement for Calix's Zero Emissions Steel Technology (ZESTY) demonstration plant in Kwinana, Western Australia. Rio Tinto investing more than A$35 million in the ZESTY Green Iron Demonstration Plant, supplying up to 10,000 metric tons of iron ore from Pilbara for commissioning. Partnership grants Rio Tinto a non-exclusive global licence for commercial use of ZESTY technology. Final Investment Decision expected in 2026.
• HeirloommajorStrategic or Co-development Partner · 20 February 2023MOU and global licence and collaboration agreement between Leilac and Heirloom (a Bill Gates-backed DAC company with investors including Breakthrough Energy Ventures, Carbon Direct Capital Management, Ahren Innovation Capital, and Microsoft) for use of Leilac's kiln technology in Heirloom's Direct Air Capture solution. Leilac receives royalties based on CO2 captured (floor price: greater of US$3/tonne CO2 separated or 3.5% of prevailing CO2 price). Heirloom contributing US$3m towards DAC and lime-related R&D.

Scale indicators10 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Aker Carbon Capture: Listed pure-play industrial carbon capture technology provider offering modular capture systems for cement and other heavy industries. Most directly comparable to Calix's Leilac business in cement and lime decarbonisation.
• Carbon Clean: Industrial point-source carbon capture company with deployed cement and steel deployments using a rotating packed-bed technology. Comparable to Calix Leilac on target customers and project-based licensing model.
• CarbonCure: Provider of carbon capture technology for the concrete industry, injecting CO2 into fresh concrete. Closest direct competitor to Calix's calcined clay/lower-carbon cement SCM strategy.

Emerging players

• Heirloom: Direct Air Capture company licensing Calix/Leilac kiln technology. Overlaps with Calix in the DAC value chain and is both a partner and a comparable emerging DAC player.
• Climeworks: Best-funded DAC pure-play building large-scale atmospheric CO2 removal facilities. Comparable as a peer in the DAC end-market where Calix's Leilac technology is also positioned.
• CarbonCapture Inc. US-based DAC company developing large-scale atmospheric CO2 capture facilities. Comparable as a peer in the DAC partner/customer ecosystem for Calix's kiln technology.
• LanzaTech: Carbon recycling company converting industrial off-gases into fuels and chemicals. Comparable as a peer in industrial decarbonisation and carbon utilization for hard-to-abate sectors.

Broad incumbents

• Linde: Global industrial gases major with deep involvement in hydrogen for green steel and carbon capture projects. Comparable as a broad incumbent adjacent to ZESTY's hydrogen-reduction iron process.
• Air Products: Industrial gas and hydrogen major with large green hydrogen and steel decarbonisation projects. Comparable as a broad incumbent in the hydrogen-based iron reduction space that ZESTY targets.
• thyssenkrupp nucera: Listed electrolyser and industrial decarbonisation specialist from thyssenkrupp, supplying green hydrogen technology for steel and chemicals. Comparable as a broad incumbent in green hydrogen infrastructure that supports ZESTY's value chain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/c/SimonOxfPhys
• Xx.com/Calixlimited
• LinkedInlinkedin.com/company/calix-limited

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Calix