TNB, each demanding distinct handling and disposal strategies. Hazardous Waste Our hazardous waste handling and disposal process is regulated by the Department of Environment (DOE) and governed by the Environmental Quality Act 1974. Our Scheduled Waste Roadmap 2018-2030 aims to strengthen hazardous waste management with a phased approach involving all employees and key stakeholders. Waste Management Closed-loopwaterusagefor steamgeneration Waterusagefor powerplantcoolingsystem Water usage in our closed-loop steam generation process is relatively small, 1.87% to 3.08%, minimising our reliance on municipal water sources. Power plants continue to operate efficiently using the closed-loop steam generation processes efficiently to reduce water usage percentage through water treatment measures, blowdown minimisation and leak prevention Our cooling process, facilitated through the open circuit Main Cooling Water system, operates efficiently by utilising seawater or river water andsubsequently discharging it back into the sea or the river at the regulated operating temperature. This ensures zero net water consumption while adhering to global water conservation standards set forth by the Electric Power Research Institute. Key parameters such as pH, temperature, oil and grease, total suspended solids, and specific contaminants like heavy metals are measured to ensure compliance We are prudent in utilising and managing water consumption. In 2023, we continued to leverage digitalisation by introducing the TNB Water Management Inventory online system to track and monitor water consumption at our assets to progressively enhance data collection. In power generation operations 80% of water consumption is used for steam generation and power plant cooling systems. All our generating power assets are built and operated in accordance with global World Bank Environmental and Social Standards. Water Management SUSTAINABILITY DISCLOSURES ON MATERIAL MATTERS TENAGA NASIONAL BERHAD Integrated Annual Report 2023 84 Strengthening