CarbonX™: ICON’s CarbonX is a new low-carbon extrudable/printable concrete formula. When paired with ICON’s wall system and robotic construction methods, ICON’s CarbonX formula is the lowest carbon residential building system ready to be used at scale. A white paper co-authored with the MIT Concrete Sustainability Hub, “Reducing carbon emissions in the built environment: A case study in 3D-printed homes” (published March 12, 2024), features a case study of 3D-printed homes employing CarbonX. The life cycle assessment results of the white paper show that the embodied and operational impacts of 3D-printed homes are lower than stick-framed construction. ICON will be shipping CarbonX to the field in April 2024.