Air Emissions Management
Air Emissions Management
Significance & Commitment
Air pollutant emissions, particularly from thermal power plants, are a significant concern due to their impacts on human health and the environment in surrounding communities. With increasingly stringent laws and regulations, the Company is committed to preventing and minimizing these impacts by improving process efficiency, advancing air pollution management technologies to ensure business growth alongside the well-being of the community and society.
Management Approach
The Company prioritizes pollution control at the source across all operations. In open-pit mining, measures include regular maintenance of generators and vehicles, water spraying on roads and coal stockpiles, vehicle speed controls, and optimized dust suspension via advanced route planning and water spraying systems. For underground mines, specific air quality management and mitigation measures are developed, supplemented by real-time dust monitoring. The third-party ambient air quality monitoring is conducted regularly across mining areas and surrounding communities to ensure compliance.
In thermal power business, the Company applied engineering controls such as circulating fluidized beds and advanced air quality control systems, including electrostatic precipitators, sulfur dioxide and nitrogen oxides trapping. Continuous emissions monitoring at the stack ensures emissions remain within regulatory limits.
In gas business, emissions are minimized beyond legal requirements, with strict monitoring of hazardous air pollutants to maintain environmental compliance.
In the energy storage system business, emission monitoring focuses on key parameters, including total non-methane hydrocarbons and volatile organic compounds, with third-party verification to ensure regulatory adherence.
Year in Review
In 2024, a new digital control system was deployed across the thermal power business in China to improve operational efficiency, leading to a reduction in environmental risks and community complaints related to air emissions. De-NOX catalyst replacements were completed at all thermal power plants in China, while new emission targets were established for thermal power business in the U.S. to strengthen emission quality and control. In mining, the Company has developed a genset inventory checklist at mine sites in Indonesia to track monitoring frequency and results in order to ensure compliance and improve data accuracy.
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