The goal is to boost demand for low-carbon cement and concrete
The rating system employs an eight-stage scale, ranging from “AA” to “G,” designed to be clear and user-friendly. Cement is evaluated based on kilograms of embodied carbon dioxide equivalent per tonne (KgCO2e/t), while concrete is measured per cubic meter (KgCO2e/m3). The scores reflect the “Global Warming Potential” (GWP), calculated in accordance with Environmental Product Declaration (EPD) standards, which are verified by third parties. The definitions for “low carbon” and “near zero” carbon emissions align with the International Energy Agency and the GCCA’s 2050 Cement and Concrete Industry Roadmap for Net Zero Concrete.
GCCA chief executive Thomas Guillot stated: “Cement and concrete are the foundations of modern life, from the buildings we live and work in, to the roads we travel, and the infrastructure that supports clean water and green energy. As global demand for sustainable construction grows, the need for greater transparency around the carbon footprint of construction materials is more critical than ever.” He emphasized that the system will support the construction industry’s efforts to reduce carbon emissions.
Germany has already adopted a compliant version of this system, developed by the German Federal Ministry for Economic Affairs and Climate Action and the German Cement Association (VDZ). Riccardo Savigliano, head of energy and decarbonization at the UN Industrial Development Organization, remarked: “This is a huge step forward towards harmonizing global definitions for low emission cement and concrete in the support of decarbonization.” Similarly, Marlène Dance, a sustainable design expert at Bouygues Bâtiment International, noted: “We believe a globally consistent carbon rating system adopted by all countries and used by all concrete suppliers would be a game changer.”
The system is intended for use alongside EPDs to ensure credibility and consistency. By providing a standardized method to evaluate carbon footprints, the GCCA aims to encourage the adoption of sustainable practices across the global construction sector, meeting the rising demand for environmentally responsible building materials.
