The Global Negative Carbon Portland Cement Market was valued at USD 142.5 Million in 2025 and is projected to reach USD 385.7 Million by 2034, growing at a Compound Annual Growth Rate (CAGR) of 11.3% during the forecast period (2024–2034). This significant growth is fueled by stringent global climate policies, ambitious corporate sustainability commitments, and the construction industry’s urgent need to decarbonize, driving the adoption of innovative cementitious materials that achieve a net-negative carbon footprint.

As the building sector undergoes a profound transformation toward true sustainability, the focus shifts to the materials science pioneers and technology developers who are re-engineering one of the world’s most carbon-intensive products. In this blog, we profile the Top 10 Companies in the Negative Carbon Portland Cement Industry—a dynamic mix of established material giants and agile startups that are shaping the future of green construction.

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🔟 1. Solidia Technologies

Headquarters: Piscataway, New Jersey, USA
Key Offering: Solidia Cement™, Solidia Concrete™

Solidia Technologies is a leading innovator in the negative carbon cement space, having developed a proprietary process that fundamentally changes how cement is made and concrete is cured. Their technology utilizes a calcium silicate composition similar to traditional cement but is produced at lower temperatures, reducing CO2 emissions from the manufacturing process by up to 40%. Crucially, their concrete curing process uses carbon dioxide instead of water, permanently sequestering CO2 within the final product.

Sustainability Initiatives:

• Patented CO2-curing technology that mineralizes CO2 into concrete

• Reduces the carbon footprint of concrete by up to 70%

• Strategic partnerships with major concrete product manufacturers for commercialization

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9️⃣ 2. CarbonCure Technologies

Headquarters: Dartmouth, Nova Scotia, Canada
Key Offering: CarbonCure Retrofit Technology, CarbonCure Ready-Mix, CarbonCure Precast

CarbonCure Technologies provides a highly scalable solution for reducing the carbon footprint of concrete by injecting captured CO2 into fresh concrete during mixing. The CO2 reacts with calcium ions in the cement to form a nano-sized calcium carbonate mineral, which becomes permanently embedded in the concrete. This process not only reduces the net carbon emissions but can also increase the compressive strength of the concrete, allowing for potential reductions in cement content.

Sustainability Initiatives:

• Technology deployed in over 700 concrete plants globally

• Has permanently sequestered over 250,000 metric tons of CO2

• Part of the First Movers Coalition, driving demand for low-carbon technologies

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8️⃣ 3. Calix Limited

Headquarters: Sydney, Australia
Key Offering: LEILAC (Low Emissions Intensity Lime And Cement) Technology

Calix Limited is tackling the carbon problem at its source with its unique LEILAC technology. This innovative process uses indirect heating in a special reactor to separate the CO2 released during the calcination of limestone, producing a pure stream of CO2 that is ready for capture, utilization, or storage. This technology can be retrofitted to existing cement plants and does not involve chemical processes or additional chemicals.

Sustainability Initiatives:

• LEILAC technology captures process CO2 emissions efficiently and cost-effectively

• Supported by the European Union’s Horizon 2020 research and innovation program

• Partnerships with leading cement manufacturers like HeidelbergCement

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7️⃣ 4. Brimstone

Headquarters: Oakland, California, USA
Key Offering: Carbon-negative Ordinary Portland Cement (OPC)

Brimstone is developing a revolutionary process to produce carbon-negative Portland cement using calcium silicate rocks instead of limestone. Since their raw material does not contain CO2, they avoid the inherent process emissions of traditional cement production. Their innovative approach aims to deliver a cement that is chemically and physically identical to conventional OPC but with a dramatically reduced, and potentially negative, carbon footprint.

Sustainability Initiatives:

• Patented process that eliminates process CO2 emissions from cement production

• Recently secured significant venture funding to scale pilot operations

• Aims to produce the world’s first carbon-negative Portland cement

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6️⃣ 5. Fortera Corporation

Headquarters: San Jose, California, USA
Key Offering: Fortera Reactive Calcium Carbonate (ReCarb)

Fortera has developed a groundbreaking technology that captures CO2 from cement plant flue gases and converts it into a reactive calcium carbonate cementitious material. This process not only reduces emissions from cement production but also creates a valuable product that can replace a portion of Portland cement in concrete. Their first commercial facility is colocated with a cement plant, creating a symbiotic relationship that turns waste CO2 into a resource.

Sustainability Initiatives:

• Captures and utilizes CO2 from cement plant emissions

• Reduces the carbon footprint of concrete by up to 60%

• First commercial-scale plant operational in California

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Negative Carbon Portland Cement Market – View in Detailed Research Report

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5️⃣ 6. Seratech

Headquarters: London, United Kingdom
Key Offering: Seratech Carbon-neutral Cement

Seratech has developed an innovative process that uses olivine, an abundant magnesium silicate mineral, to mineralize CO2 and produce a supplementary cementitious material (SCM). Their proprietary method involves capturing industrial CO2 emissions and reacting them with olivine to create magnesium carbonates and silica, which can be used to replace a significant portion of Portland cement in concrete, resulting in a carbon-neutral or even carbon-negative final product.

Sustainability Initiatives:

• Utilizes mineral carbonation to permanently sequester CO2

• Won the 2022 Obermatt Prize for its innovative approach

• Focuses on using abundant, non-competitive raw materials

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4️⃣ 7. Carbicrete

Headquarters: Montreal, Quebec, Canada
Key Offering: Carbon-negative concrete products using steel slag

Carbicrete has developed a patented technology that enables the production of precast concrete without cement. Instead of Portland cement, they use steel slag, an industrial by-product, as the binding agent. Their process involves curing the concrete with CO2, which reacts with the slag to form calcium carbonates, creating a strong, durable, and carbon-negative final product. This approach addresses two waste streams simultaneously: steel slag and CO2 emissions.

Sustainability Initiatives:

• Eliminates cement entirely from the concrete production process

• Each standard concrete block sequesters approximately 1 kg of CO2

• Technology is being commercialized with leading concrete manufacturers

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3️⃣ 8. Ecocem

Headquarters: Dublin, Ireland
Key Offering: Low-carbon cement technologies and solutions

Ecocem is a leading European supplier of low-carbon technologies for the cement and construction industries. While not exclusively focused on negative carbon cement, the company is a major innovator in developing advanced cementitious materials that significantly reduce the carbon footprint of concrete. Their expertise in slag cement and other supplementary cementitious materials positions them as a key player in the transition toward carbon-neutral and negative-carbon cement solutions.

Sustainability Initiatives:

• Advanced grinding technology for producing low-carbon cement replacements

• Active participation in European low-carbon cement research initiatives

• Supplies low-carbon cement solutions across major European markets

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2️⃣ 9. Zeobond Pty Ltd

Headquarters: Melbourne, Australia
Key Offering: E-Crete® geopolymer concrete

Zeobond is a pioneer in geopolymer technology, producing E-Crete®, a concrete that uses industrial by-products (fly ash and slag) activated by alkali chemicals instead of Portland cement. This results in a concrete with up to 80% lower CO2 emissions compared to conventional concrete. While currently focused on low-carbon solutions, their technology platform provides a foundation for developing negative-carbon formulations through enhanced carbonation during the curing process.

Sustainability Initiatives:

• Geopolymer technology eliminates the high-temperature calcination process

• Utilizes industrial by-products that would otherwise go to landfill

• Products have been used in numerous sustainable building projects in Australia

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1️⃣ 10. Novacem Limited

Headquarters: London, United Kingdom (technology acquired by other players)
Key Offering: Magnesium oxide-based cement technology

Novacem was an early pioneer in the negative carbon cement space, developing a revolutionary cement based on magnesium oxide rather than calcium carbonate. Their technology involved magnesium silicates that absorb CO2 during the hardening process, resulting in a carbon-negative footprint. Although the original company is no longer operational, its intellectual property and foundational research have significantly influenced the current generation of negative carbon cement technologies and continues to inspire new innovations in the field.

Legacy and Impact:

• Pioneered the concept of carbon-negative cement using magnesium chemistry

• Inspired a generation of researchers and entrepreneurs in the low-carbon cement space

• Key patents and knowledge continue to inform current negative carbon cement development

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Negative Carbon Portland Cement Market – View in Detailed Research Report

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🌍 Outlook: The Future of Cement Is Carbon Negative

The negative carbon Portland cement market is undergoing a revolutionary transformation. While traditional cement still dominates global production, the industry is rapidly investing in transformative technologies that will fundamentally alter its environmental impact. From carbon capture utilization to completely novel chemical processes, these innovations are paving the way for a future where buildings and infrastructure serve as carbon sinks rather than emission sources.

📈 Key Trends Shaping the Market:

• Accelerated R&D in carbon mineralization and alternative cement chemistries

• Growing regulatory pressure for embodied carbon reduction in construction

• Increasing corporate commitment to carbon-negative supply chains

• Advancements in carbon capture technology integration with cement production

Get Full Report Here:
Negative Carbon Portland Cement Market – View in Detailed Research Report

The companies profiled above are not only transforming construction materials—they’re fundamentally redefining the relationship between the built environment and climate change.