Holcim Ste. Genevieve Carbon Capture Project

Holcim’s Ste. Genevieve Cement Plant Carbon Capture Project in Missouri is a large-scale CCS development based on Air Liquide’s Cryocap™ FG technology following completion of a Front-End Engineering Design study in 2024. The facility is the world’s largest single-kiln cement plant and the capture system is designed to achieve up to 95% CO₂ capture efficiency, with capacity to capture up to 3.9 million tonnes of CO₂ per year and an expected average annual capture rate of approximately 3.1 million tonnes. The FEED program was led by the University of Illinois Illinois Sustainable Technology Center as prime recipient, with Air Liquide providing capture technology and process design, Kiewit responsible for balance-of-plant engineering and constructability planning, Visage Energy supporting environmental and commercialization analysis, and Holcim US serving as host site owner and project sponsor. Estimated total installed capital cost for the capture facility ranges from $1.45 billion to $1.89 billion, with annual operating costs estimated at approximately $182 million.