Driving the Business throughSustainability

• E1 Waste and Waste Management
• E2 Energy Consumption
• E3 Water and Wastewater Management
• E4 Greenhouse Gas Management

Waste and Waste Management

Effective waste and waste management is a critical aspect of healthcare operations. The Hospital has established a Waste Management Committee to ensure efficient, timely, and compliant handling and disposal of waste. This includes systematic monitoring of waste segregation, storage, collection, handling, transportation, and disposal processes.

Management Approach

1. Waste Segregation at Source
   The Hospital has implemented a waste segregation policy at the source, with clearly defined waste categories, color-coded containers, and standardized labeling. Training programs are regularly conducted to enhance staff awareness and compliance.
2. Comprehensive Waste Management Plan
   A structured waste management plan has been developed covering all types of waste, including chemical and hazardous substances. The plan outlines procedures from segregation, storage, and collection to transportation and final disposal.
3. Controlled Waste Handling and Transportation
   Dedicated waste carts are used to ensure safe handling, with clearly designated routes and schedules for waste transportation within the Hospital.
4. Improved Waste Storage Facilities and External Coordination
   Waste storage areas for general, infectious, and hazardous waste have been upgraded to meet hygiene standards. The Hospital collaborates with authorized external agencies for proper waste disposal, including the Bangkok Metropolitan Administration, Krungthep Thanakom Co., Ltd., and Akkhi Prakan Public Company Limited.

In addition, infectious and hazardous waste is treated using high-temperature incineration, with operating temperatures not lower than 760°C and 1,000°C, in compliance with the Ministerial Regulation on the Disposal of Infectious Waste B.E. 2545 (2002) issued by the Ministry of Public Health, and the Bangkok Metropolitan Administration Regulation on Waste and Sewage Management for Buildings and Healthcare Facilities B.E. 2545 (2002). 

Performance in 2025

In 2025, the average amount of infectious waste per inpatient day was 10.02 kilograms, representing a decrease of 0.16 kilograms per day compared to 10.18 kilograms per day in 2024.

The reduction was primarily attributed to a decrease in the number of patients during the year, resulting in a corresponding decline in total waste generation.

The Hospital generated a total of 59,119 kilograms of recyclable waste, which was transferred to certified recycling partners for proper processing. Revenue from the sale of recyclable materials amounted to THB 143,817, which has been allocated to support environmental and social initiatives in 2026.

Energy Consumption

The Company has been actively implementing energy efficiency measures since 1998, as reflected by its recognition through the Outstanding Energy Conservation Building Award from the Department of Energy Development and Promotion, Ministry of Science, Technology and Environment. The Company continues to prioritize energy management as a key operational focus.

Key Energy Efficiency Measures in 2025

1. Upgrade to high-efficiency lighting systems
   Resulting in energy savings of 36,707.40 kWh/year, equivalent to THB 157,841.22 per year
2. Reduction of water pump energy consumption during on-peak periods. Saving 101,835 kWh/year, equivalent to THB 491,863 per year
3. Optimization of cooling tower and chiller operations during on-peak periods. Achieving savings of 353,320 kWh/year, equivalent to THB 1,706,536 per year, without affecting cooling performance
4. Reduction of chilled water pump energy consumption during on-peak periods. Saving 43,800 kWh/year, equivalent to THB 211,554 per year, without impacting system efficiency

These three on-peak energy reduction measures have been continuously implemented since 2023.

In addition, the Company actively promotes energy-saving awareness among employees, encouraging the practice of turning off lights and electrical equipment when not in use.

 Performance in 2025

In 2025, the Hospital recorded total electricity consumption of 10,487,000 kWh, representing a reduction of 1,192,000 kWh compared to 11,679,000 kWh in 2024.

This decrease was primarily attributed to a lower bed occupancy rate, resulting in reduced overall energy demand.

In addition, the Hospital has implemented various initiatives and management approaches to reduce electricity consumption, including promoting employee awareness on energy conservation, encouraging the shutdown of unnecessary lighting and equipment, utilizing energy-efficient lighting systems, optimizing air-conditioning temperature settings, and installing solar panels as a renewable energy source.

Furthermore, the Company has established dedicated teams responsible for the maintenance and optimization of electrical systems to ensure efficient operation and energy savings. The management also places strong emphasis on the adoption of renewable energy, including the installation of solar panels across five buildings, contributing to on-site electricity generation as follows:

Water and Wastewater Management

Wastewater Management
The Company conducts regular inspection and maintenance of wastewater pumps in the central wastewater holding system. Chlorination is continuously applied to disinfect wastewater, and samples are collected and tested on a monthly basis prior to discharge.

All wastewater is discharged into the Bangkok Metropolitan Administration’s closed sewer system and treated at the Din Daeng centralized wastewater treatment facility.

The system design and installation have been reviewed and approved by Bangkok Metropolitan Administration officials. In addition, relevant hospital departments have participated in site visits and ongoing monitoring of the treatment system. Monthly follow-ups are conducted through official reports obtained from the Bangkok Metropolitan Administration, significantly reducing the risk of wastewater treatment system failure.

Water Consumption Reduction
The Company has implemented water-saving initiatives, including the gradual installation of sensor-based faucets in public restrooms to reduce unnecessary water usage.

In addition, awareness campaigns are conducted through signage and internal communication to encourage water conservation among patients, visitors, and staff.

Performance in 2025

In 2025, the Hospital’s total water consumption decreased by 13,182 cubic meters compared to 2024.

However, when measured as water consumption per patient day, the figure slightly increased to 1.94 cubic meters, representing a 2.11% increase from 1.90 cubic meters in 2024.

Based on these results, the Company will continue to implement and enhance water management strategies to ensure that water consumption aligns with its established targets.

Greenhouse Gas Management

The Company has initiated a systematic approach to measuring greenhouse gas (GHG) emissions by establishing a dedicated working team responsible for data collection and identifying initiatives to reduce emissions across its operations.

In early 2025, the Company participated in a pilot program for the Organizational Carbon Footprint Platform, organized by the Thailand Greenhouse Gas Management Organization (Public Organization), as part of its commitment toward achieving Net Zero emissions.

Performance in 2025

The Company has measured its greenhouse gas emissions across all scopes, including:

• Scope 1: Direct emissions from fuel combustion
• Scope 2: Indirect emissions from purchased energy
• Scope 3: Other indirect emissions

The results are as follows:

      Based on the Company’s performance in 2025, greenhouse gas (GHG) emissions were reduced by 13.05% compared to 2024, significantly exceeding the short-term target of a 2% reduction, as detailed in the table above. The Company remains committed to continuously improving its operational processes to achieve its long-term sustainability goals.

      In addition, the Company participated in the “Care the Bear” initiative, which focuses on promoting behavioral changes within organizations to reduce GHG emissions from events and activities.

      In 2025, the Company successfully reduced paper usage in its activities, contributing to a measurable reduction in greenhouse gas emissions, as detailed below:

In 2025, the Company was rated “A” in the SET ESG Ratings by the Stock Exchange of Thailand, reflecting its strong commitment to sustainable business practices.

This achievement demonstrates continuous improvement from the “BBB” rating in 2024, and underscores the Company’s dedication to further enhancing its sustainability performance toward higher levels in the future.

• The average waste generated per inpatient day decreased by more than 1% compared to the previous year
• The estimated average electricity consumption per patient day decreased by more than 1% compared to the previous year
• The average water consumption per patient day decreased by more than 1% compared to the previous year
• Short-term target: Reduce greenhouse gas (GHG) emissions by 2% year-on-year
• Long-term target: Achieve net-zero greenhouse gas emissions by 2065, in alignment with Thailand’s national target