At Zouping power plant in China, the Company faced significant challenges due to high water consumption of demineralized water used as boiler feed water, coupled with bacterial colonies in the raw water that blocked membrane modules and reduced water treatment capacity by 15%.<br><br>To address these challenges, Zouping embarked on an initiative to optimize the water treatment processes. This involved the optimization of chemical agents and the expansion of water outlets. Extensive research was undertaken to identify the most effective chemical agents for wastewater treatment and alternative solutions for defluoridation systems. <br><br>Key Achievements from the Optimization Include:<br>· Increased recovery rate of reverses osmosis (RO) systems from 70.5% to 72.5%<br>· Extended cleaning cycle of RO units from 10 days to 50 days<br>· Prolonged service life of membrane elements doubled from 4 years to 8 years<br>· Saved approximately 56,000 tonnes of boiler feed water<br>· Saved USD 120,000 in operational and maintenance costs and additional USD 370,000 in defluoridation equipment costs

At Bontang Coal Terminal (BoCT) in Indonesia, coal spillage along the ship loading process has been identified as a critical issue. This challenge not only leads to the port’s cleanliness but also poses environmental risks to the surrounding community and incures significant management costs. In response, BoCT embarked the “Reuse coal spillage project” by blending spilled coal back into the shipment.<br><br>This project kicks off with a comprehensive data collection utilizing a digital application. The execution phase ensures the careful integration of spillage coal back into the shipment process. This approach has led to a reduction of coal spillage dumping and conserved 4,386 tonnes of natural coal annually. Moreover, it has significantly reduced dust emissions and contamination in soil and water, thereby lowering community complaints. Financially, the project has delivered substantial economic advantages, generating additional coal revenue of USD 477,850 and reducing coal spillage management costs by USD 15,052 each year.

In 2021, the rising coal price broke through historical record, and low-price coal could not be purchased in local market in China. To pursue this challenge, Zouping power plant looked for an opportunity to use non-coal fuel as raw materials in the power plant and found that characteristics and prices of some industrial wastes such as activated carbon in Zouping area are appropriate for burning. Trial burning of mixed coal and solid waste was conducted in a boiler to find appropriate types and amounts of solid wastes as well as blending ratios before extending to all boilers for mixed combustion test.<br><br>This conserved raw coal from burning and facilitated activated carbon disposal 9,337 tons in 2022. Moreover, in terms of social benefit, this enhanced customer satisfaction owing to positive contribution to guarantee the heat and power supply at high coal price condition as well as improved community satisfaction from facilitating industrial waste management, especially activated carbon in the area. Apart from those, the Company also earned economic benefit from saving coal burning cost and additional income from fly ash selling due to increasing of fly ash yield USD 5,775,468 as well as increased business agility and flexibility on high coal price situation.

Following the shutdown of groundwater wells, Zhengding Power Plant in China shifted its water source from groundwater to surface water, leading to increased water withdrawal costs. To optimize operations and reduce electricity generation costs, the plant launched an innovation program focused on reducing water consumption and recovering waste heat. This process involved internal workshops, water quality analysis, and project planning. As a result, the plant constructed the water recovery pipelines and installed pumps at the chemical plant and cooling tower to recirculate and reuse blowdown water within the operational process.

The Arboretum Project has been established by Indominco Mine in Indonesia. This project is a multi-functional initiative designed to enhance biodiversity conservation and provide additional value through scientific research, education, tourism, and recreational activities. The Indominco Arboretum is divided into several zones, each serving different functions.

As operations at Luannan Power Plant became increasingly complex, leading to several issues. One of the challenges is that the heavy reliance on individual operator experience for adjusting operational parameters. To solve the issue, the Company collaborated with a technology firm to develop a comprehensive digital system utilizing Client, Edge, Cloud, Big Data, and AI technologies. This new system can enhance overall operational efficiency by optimizing oxygen level in the combustion process, enhancing boiler efficiency and significantly reducing emissions. Compared to 2022, air emissions loading was reduced by 17%, 19%, and 16% for NOX, SOX, and PM, respectively.

In response to challenges in offsite landfill of non-hazardous waste at Jorong Mine, the Company initiated the Waste-to-Product Projects by integrating 3R principles (Reduce, Reuse, Recycle) to transform different waste streams into valuable products and reduce landfill dependency. Initiatives included converting paper and plastic waste into construction materials, using food waste and used cooking oil for fertilizer and soap production. Additionally, new facilities were built to support waste management operations.

Zouping Power Plant faced challenges managing slag and wastewater due to inefficient transportation and treatment processes. The long distance between boilers and dewatering bins, along with the need for multiples supporting equipment, resulted in high power consumption, increased labor demands, substantial maintenance costs, and risks of wastewater leakage. To address these issues and improve slag treatment efficiency, the plant constructed a new slag silo located between the boilers to mitigate storage constraints and reduce transportation distance. In addition, the slag conveyor system was upgraded to transport and dewater slag simultaneously.

The site-specific BMP is a sub-plan of the Northern Region BMP, which all underground mine sites are required to develop based on regulatory requirements and the mitigation hierarchy. The baseline data have been collected since the pre-operational phase, covering both terrestrial and aquatic ecology. This includes ecological communities, threatened ecological communities, habitat values, groundwater dependent, threatened flora and fauna species, and riparian areas.

All open-pit mine sites are required to develop a site-specific Biodiversity Management Plan (BMP) based on national regulatory requirements and mitigation hierarchy. The targets of these plans are developed in the form of biodiversity index achievement, ecosystem health ratings, and variety of local plant species in the reclamation area.

Each year, the Company identifies the species that inhabit areas surrounding our operations and assesses the level of threat these species might face, particularly with reference to the IUCN Red List. This information forms the foundation for crafting strategies aimed at minimizing the impact of our operations on local wildlife and ecosystems.

The Company assesses biodiversity-related dependencies, impacts, risks, and opportunities through a science-based process that covers all relevant activities across the full asset lifecycle. The process begins with initial screening to identify potential biodiversity impacts across our operations. Then, detailed biodiversity assessments are conducted by identifying interactions with terrestrial, freshwater, and marine ecosystems, using recognized assessment methodologies and spatial data on sensitive, protected, and high-biodiversity value areas.

To strengthen transparency and regulatory compliance in watershed rehabilitation, Bharinto Mine in Indonesia developed SITANAM, a web-based and mobile application for individual plant-level geotagging and monitoring. This initiative supports regulatory requirements from the Financial Audit Agency and the Ministry of Environment and Forestry of the Republic of Indonesia, which require 100% geotagged photographic documentation.

At Bharinto mine in Indonesia, most recyclable waste had previously been disposed of in the onsite landfill, and this practice was not aligned with government policy for long-term waste management. Local communities also expressed a strong demand for Bharinto to provide a platform for exchanging recyclable materials. In response, Bharinto launched the Waste Bank Program (BASARUAN) in collaboration with the local government waste bank. The program involves communicating program details, including recyclable waste types, pricing, and collection schedules, to employees, contractors, and community members; receiving and sorting recyclables from all stakeholders; transporting them to a local waste bank for sale; distributing the proceeds back to contributors as incentives; and continuously monitoring the system to ensure circularity. (Reuse/Recyling)

Banpu has implemented waste-stream mapping across the full value chain, covering upstream activities, own operations, and downstream processes, to systematically identify waste generation points, waste management practices, and associated risks. This mapping supports strategic planning and the advancement of circular economy practices by prioritizing waste prevention and resource efficiency. Where waste generation is unavoidable, potential waste is reused, recycled, or recovered as secondary materials wherever feasible, while residual waste is managed through environmentally sound treatment and disposal methods, including incineration and qualified landfill, in compliance with applicable regulations and best practices.

The identification of operations located in water-stressed areas is a core component of the Company’s water risk assessment and prioritization process. In 2025, all operating assets were assessed for potential water-related risks. The assessment found that 48% of total sites are located in areas classified as water-stressed. This site-specific, location-based understanding enables the Company to prioritize mitigation measures, strengthen local water management plans, and safeguard the resilience of nearby communities and ecosystems within water-stressed catchments.

Water plays a critical role across open-pit mining, particularly for dust suppression. To manage the associated risks, Banpu has implemented a water management framework and site-specific strategies to control both water quality and quantity, supporting efficient and responsible water use across our mining operations.<br><br>At Indominco Mine, continuous improvement initiatives are focused on optimizing operational processes and conserving water by reducing freshwater consumption and managing acid mine drainage risks. Key measures include modifying water trucks with specialized equipment and integrating water reuse into mine planning to maximize the utilization of pit water. In 2025, these efforts enabled the reuse of 4,313 m³ of water across the operation.

The Company has developed site-specific water flow diagrams to support the implementation of our long-term water management strategy. The diagrams provide a complete representation of water withdrawals, operational water use, internal circulation, and discharge pathways, thereby improving data accuracy and consistency while supporting informed decision-making. Standardized diagrams also enhance transparency and credibility, and ensure alignment with internationally recognized water reporting frameworks.