TRANSFORMING TRANSFORMING TRANSFORMING SUSTAINABILITY REPORT FY 2023 COMMUNITIES THE PLANET THE WORKPLACE Decarbonization of alumina refinery and transitioning to green alumina manufacture Roadmap to Green Alumina 20.8% GHG Intensity reduction curve 0.60 12.5% tCO2e/T By FY30 Green To achieve our goal of reducing overall In FY 2022-23, significant progress 0.6% Alumina was achieved towards improving GHG emissions we are first transitioning our most emission-intensive production energy efficiency and sustainability. Natural Gas in Calciner & Boilers lines to greener energy sources. Our More than 3,200 LED lights were Biomass Cofiring • 100% replacement alumina refinery at Lanjigarh is making installed during the year, accompanied in Boilers of FO in Cal. this shift along with building capabilities by the implementation of more than 5 • 3.5% by FY24 Variable Frequency Drives (VFDs), and 10MW Hybrid Power • 30% Cofiring in for the production of Green Alumina. Plant • 20% by FY30 Boilers the adoption of Advanced Process • 55% Utilization factor • 0.12 tCO e/T Control (APC) systems in key units. 3.1% 2 • 0.2 tCO2e/T Making this shift involves a • Partnered with comprehensive approach covering CO Additionally, measures like increased 2 Sterlite Grid emissions reduction, transitioning to net liquor productivity, implementation Energy Conservation • 0.01 tCO e/T Projects 2 more sustainable practices and also of an Acid Wash system, reduction in GHG • Plant energy reduction annually decreasing specific energy coal consumption, biomass firing in Intensity • 1% every year consumption by 1%. At the operational boilers, green power import, and a 0.96 level, this means reducing specific steam decrease in specific energy tCO e/T • 0.03 tCO2e/T 2 and fuel oil consumption, specific consumption to 7.16 GJ/T were also electrical energy reduction, and specific accomplished, demonstrating a greenhouse gas emissions reduction. strong frontline commitment to This is being done by optimizing energy efficiency and environmental Our copper business too has processes, implementing sustainability. been actively exploring avenues energy-efficient technologies, and to produce low carbon copper. exploring alternative energy sources. Total Produced (MT) in FY23 The cumulative impact of all these During FY 2022, we conducted a Product Green measures is expected to significantly successful pilot programme, Copper from 2,780 bring down the environmental footprint of the alumina refinery. producing 3,000 MT of copper (4.15% of total production) products from scrap and Sterlite Copper, recycled copper. Encouraged by Additionally, efforts are focused on these results, we have ambitious Fujairah improving the station heat rate in the plans to substantially scale up Combined Gas and Power Plants (CGPP) associated with the refinery. By production of this low-carbon upgrading heat recovery systems, product line in the future. optimizing combustion processes, and enhancing overall plant efficiency, the goal is to maximize energy generation while minimizing emissions and waste. Further, auxiliary consumption in CGPP is also targeted for reduction. 61