Climate & Energy

• Clinker substitution: Most CO2 emissions associated with cement occur during the production as a result of the chemical reaction that occurs when the raw material (limestone) calcinates into clinker in the kiln. Replacing the clinker with alternative mineral components such as pozzolana, slag or fly ash (coming from waste or by products of other industries) to produce blended cements, reduces the carbon intensity of the cement. This is the primary lever for reduction of carbon emissions. Today approximately 90% of our total cement portfolio consists of blended cements.
• Waste-derived fuels and biomass: Another lever to reduce the carbon intensity of our cement production is to use waste and low-carbon fuels that serve as a replacement for fossil fuels and provide the energy needed to operate a cement kiln. We believe that this lever has the highest potential of improvement to further lower our emissions in future.
• Energy efficiency: We always strives to improve our Thermal & Electrical energy efficiency in both Kiln and Captive Power Plant which helps in reduction of carbon intensity as and our production costs. At ACC, we have implemented various energy conservation measures from time to time.
• Renewable Energy and Waste Heat Recovery System (WHRS): With three wind farms of total capacity of 19 MW, ACC consumes renewable energy at some of its plants. Besides this, additional green power procured through Power Purchase Agreements (PPAs) are being increasingly consumed to lower its conventional energy requirement from coal. WHRS at Gagal helps in lowering its electrical energy requirement from grid.
• Adoption of New technologies: At ACC, we have adopted state-of-the-art technological interventions; innovative production techniques and climate-resilient resource optimization measures.

ACC's CDP Climate Change Response 2022 PDF