The capture, transport and storage of CO 2 is well regulated and scientifically proven to be safe. Storage technologies have been in use for more than 50 years. Moreover, CO 2 storage is a natural process that has happened for thousands of years, such as in deep, porous rock formations. Scientists have even found natural CO 2 pockets that are millions of years old.

Carbon Capture, Utilization and Storage

Q: What is CCUS?

The carbon capture process involves capturing CO 2 emissions from industrial processes, which is then either stored or utilized in other industries. When it comes to cement production, there are several types of carbon capture storage and/or utilization pathways currently being explored: Storage The captured CO 2 can be conditioned into a pure gas, liquid or dense state and then transported by pipeline, ship, rail or truck to be pumped underground for permanent storage. Utilization Alternatively, the captured CO 2 can be utilized as feedstock (or raw material) for products of value, ranging from aviation and maritime fuel, to chemicals or plastics. It can also be captured and recarbonated into concrete and mineral components through mineralization to develop low-carbon building materials.

As Holcim works to become a net-zero company by 2050, advanced technologies, particularly carbon capture, utilization and storage (CCUS), represent a key decarbonization lever that complements our innovative formulations and better energy mix.

To date, we've identified 19 full-scale CCUS projects based on mature technologies, as well as robust partnerships and value chains. Of these, eight projects in Europe have been awarded grants by the European Union Innovation Fund, with our first projects aiming to go live by 2030.

With these eight projects in execution, we have committed to produce over 8 million tons of near-zero cement for our customers.

These cutting-edge technologies position Holcim at the forefront of the global shift towards decarbonization and enabling us to offer our customers the most sustainable building solutions.

To effectively capture, transport, store and use CO₂, Holcim is establishing robust partnerships with industry experts across the carbon management value chain. We are creating a new CO₂ value chain that helps to achieve climate goals and generates financial returns.

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What is CCUS? FAQ

What is CCUS?

The carbon capture process involves capturing CO₂ emissions from industrial processes, which is then either stored or utilized in other industries. When it comes to cement production, there are several types of carbon capture storage and/or utilization pathways currently being explored:

Storage
The captured CO₂ can be conditioned into a pure gas, liquid or dense state and then transported by pipeline, ship, rail or truck to be pumped underground for permanent storage.

Utilization
Alternatively, the captured CO₂ can be utilized as feedstock (or raw material) for products of value, ranging from aviation and maritime fuel, to chemicals or plastics. It can also be captured and recarbonated into concrete and mineral components through mineralization to develop low-carbon building materials.

Driving CCUS in Europe

Holcim has been selected for grants from the European Union (EU) Innovation Fund for carbon capture projects in Belgium, Croatia, Greece, Germany, Poland and Romania, as well as two in France. These eight projects are based on highly scalable, mature technologies and advanced partnerships, putting clean technologies to work for Europe’s net-zero future.

Lägerdorf, Germany

The Carbon2Business project aims to capture CO₂ from our Lägerdorf plant and utilize it as an industrial raw material. It was awarded €110 million from the EU Innovation Fund in 2022.

Annual CO₂ capture: 1.2 million tons

Kujawy, Poland

The Go4ECOPlanet project will capture CO₂ from our Kujawy site for offshore storage. The project received €228 million from the EU Innovation Fund in 2022.

Annual CO₂ capture: 1.2 million tons

Obourg, Belgium

The GO4ZERO project will deploy an innovative carbon capture technology at our plant in Obourg, and transport the CO₂ for offshore storage. The project was selected for a grant from the EU Innovation Fund in 2023.

Annual CO₂ capture: 1.1 million tons

Koromačno, Croatia

The KOdeCO net zero project will capture and store CO₂ from Holcim’s plant in Koromačno. The project was selected for a grant from the EU Innovation Fund in 2023.

Annual CO₂ capture: 0.4 million tons

Le Teil, France

A partnership with Elyse Energy, the eCapt-Rhône project aims to produce e-methanol using renewable hydrogen production and CO₂ captured from our plant in Le Teil.

Annual CO₂ capture: 0.2 million tons

Milaki, Greece

The OLYMPUS project aims to capture and store CO₂ from our Milaki plant. In 2023, the project was selected for an EU Innovation Fund grant, and it broke ground on 29 May, 2025.

Annual CO₂ capture: 1 million tons

Martres-Tolosane, France

CarboClearTech is a carbon capture and storage system that will be installed at Holcim’s plant in the Occitanie region of France.

Annual CO₂ capture: 0.7 million tons

Câmpulung, Romania

The Carbon Hub CPT 01 project will use proven carbon capture technology to separate CO₂ from flue gases and store it safely underground.

Annual CO₂ capture: 1 million tons

Our CCUS Pathways

1. Mineralization

CO₂ is reacted with minerals to form carbonates, storing the CO₂. In the cement sector, this reaction then enables CO₂ capture for use as a raw material to produce new building materials.

3. Market utilization

Captured CO₂ can be used for greenhouse plants as a crop growth enhancer or for beverage carbonation, for example.

2. Conversion utilization

CO₂ can be repurposed by reaction with low-carbon hydrogen to produce chemicals and plastics or decarbonize the aviation and maritime sectors through the production of sustainable fuels.

4. Storage

After CO₂ is captured from a facility, it is transported – via pipeline, train, ship or truck – and safely stored underground either onshore or offshore.

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CCUS FAQ

How is CO₂ captured?

In cement production, we are developing and assessing several types of mature carbon capture technologies to give us maximum flexibility across our global footprint. They broadly fall into one of the following two categories:

Post-combustion technologies

These solutions capture CO₂ in the exhaust gas of a traditional kiln system at the “end of the pipe”. The most advanced post-combustion solution is based on liquid solvents such as amines, e.g. monoethanolamine solution (MEA). The CO₂ in the exhaust gas is absorbed by the solvent, and the CO₂-rich liquid is then sent to the regenerator where the CO₂ is released in a concentrated form. The solvent is reintroduced to the absorption column. Other post-combustion approaches include CO₂ separation by membranes and adsorption processes.

Integrated processes

Integrated processes such as oxyfuel or the electrification of clinker manufacturing or calcination of raw materials are possible alternatives to pure post-combustion capture. We are currently engaged in various site-specific investigations to develop integrated concepts. In the oxyfuel approach, air for combustion in the cement manufacturing process is replaced with oxygen. This prevents nitrogen forming in the system and generates a concentrated CO₂ exhaust stream.

Why is CCUS important?

Countries and companies around the world are increasingly committing to achieving net-zero by 2050. Reaching net-zero thus requires a profound transformation in the way we reduce emissions.

CCUS enables the reduction of greenhouse gas emissions from hard-to-abate sectors, such as cement, offering a viable pathway towards global climate goals and transitioning to a net-zero economy. Cement is an essential building material for our homes, schools, hospitals and roads. By harnessing CCUS, we can produce net-zero cement to advance low-carbon construction.

Is CCUS safe?

The capture, transport and storage of CO₂ is well regulated and scientifically proven to be safe. Storage technologies have been in use for more than 50 years. Moreover, CO₂ storage is a natural process that has happened for thousands of years, such as in deep, porous rock formations. Scientists have even found natural CO₂ pockets that are millions of years old.