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carbocleartech project

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

The plant is already one of the most modern in France, thanks to recent investments totaling €124 million. Now, the European Union (EU) Innovation Fund has selected CarboClearTech to receive a grant of €120 million to fund the deployment of the CCS value chain.

From 2025, the plant will also host an open innovation platform where researchers, start-ups, companies and other innovators can test new carbon capture technologies at scale.  

CarboClearTech at a glance

  • Around 1 million tons of near-zero cement produced annually

  • End-of-pipe PSA and cryogenic carbon capture

  • 700,000 tons CO2 captured annually

  • EU Innovation Fund

  • First CO2 capture site in Southwestern Europe 

  • Capture, storage pathway

The technology behind the project

CarboClearTech will sequester 700 000 tons of residual CO2 emissions that would otherwise be released into the atmosphere. Today, the plant accounts for 4% of France’s total cement production. Its decarbonization will accelerate the move toward decarbonized construction.

CarboClearTech was developed in partnership with a world leader in industrial gases. The first CO2 capture site in Southwestern Europe, it brings this vital technology to the region and contributes to its sustainability objectives.  

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As the first CO2 capture facility in Southwestern France, and also in Southern Europe, CarboClearTech is giving the impetus needed to develop new decarbonized sectors, which are essential for the future of European industry. 

Thomas de Charette | Head of Decarbonization, Holcim France

Helping to de-risk Carbon Capture technologies, the Martres plant is also the site of the recently inaugurated CaptureLab - a pilot test platform allowing in-situ testing of capture technologies in real operating conditions.

Discover more

More on Holcim's CCUS journey

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OLYMPUS is a flagship project in Holcim’s European decarbonization roadmap. It will lead to the development of storage capacity in southern Europe.

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The Carbon2Business project at our cement plant in Lägerdorf, Germany aims to capture more than 1.2 million tons of CO2 emissions annually.

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Go4ECOPlanet will install a unique facility to capture 100% of CO₂ emissions generated during the production of clinker – the key ingredient in cement production.

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In Belgium, the GO4ZERO project will deploy an innovative carbon capture technology at our plant in Obourg, and transport CO2 for offshore storage under the North Sea.

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The eCapt-Rhône project uses renewable hydrogen production and CO2 captured from Holcim’s cement plant in Le Teil to generate e-methanol. 

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The KOdeCO project aims to make Holcim’s Koromačno plant the first to produce net-zero cement in Croatia and the Mediterranean.

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The Carbon Hub CPT01 carbon capture and storage (CCS) project will be installed at Holcim’s cement plant in Câmpulung, Central Romania. It will enable Holcim to produce 2 million tons of near-zero cement per annum.

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