Water Management
Supporting the SDGs Goals
Goal 6:
Goal 14:
Water Management
Ratch Pathana Energy Public Company Limited and its subsidiaries are committed to managing water resources efficiently and responsibly. The Company establishes both quantitative and qualitative water-related targets, together with assessments of water-related risks across its operating locations, to reduce freshwater withdrawal, improve water-use efficiency, promote water reuse and recycling, and mitigate long-term risks associated with water stress and water scarcity.
Goal and Performance Highlights Year 2025
Ratch Pathana Energy Power Plant
Goal
Reduce process water consumption by reusing at least 60,000 m3 of treated wastewater (4% of total water usage).
Performance
88,247 m3 of wastewater was reused, Achieving
Goal
Reduce office water consumption by at least 70 m3 (2% of total office water use) from the 2024 baseline year.
Performance
1,318 m3 of office water was saved, Achieving
Sahacogen Green Power Plant
Goal
Reduce process water consumption by reusing at least 54,000 m3 (11.44% of total water usage for 2025).
Performance
336 m3 of wastewater was reused, Achieving
Goal
Reduce office water consumption by 52,878 m3 (17.04% of total water usage in 2025).
Performance
Office water consumption was reduced by 2,971.7 m3, achieving a
Sahagreen Forest Power Plant
Goal
Reduce process water consumption by reusing at least 20,000 m3 annually (5.13% of total water usage).
Performance
23,266 m3 of wastewater was reused, Achieving
Water Consumption Statistics
| 2023 | 2024 | 2025 | |
|---|---|---|---|
| Ratch Pathana Energy Power Plant | |||
| Water Consumption (m3) | 1,908,007 | 1,698,676 | 1,425,985 |
| Water Intensity (Withdrawal/MWh net) | 1.98 | 2.40 | 2.31 |
| Treated Wastewater (%) | 100 | 100 | 100 |
| Water Management Approach | Industrial Park Treatment System / Green Area / RO Rejected Water Recycle | ||
| Sahacogen Green Power Plant | |||
| Water Consumption (m3) | 57,221.00 | 355,857.01 | 38,1016.82 |
| Water Intensity (Withdrawal/MWh net) | 5.36 | 5.34 | 5.10 |
| Treated Wastewater (%) | 100 | 100 | 100 |
| Water Management Approach | Industrial Park Treatment System / Green Area | ||
| Sahagreen Forest Power Plant | |||
| Water Consumption (m3) | 448,220.00 | 391,445.67 | 396,084.00 |
| Water Intensity (Withdrawal/MWh net) | 7.93 | 4.68 | 4.18 |
| Treated Wastewater (%) | N/A | N/A | |
| Water Management Approach | Zero Discharge Policy | ||
Quantitative Targets 2025
Qualitative Targets
- Reduce dependence on new water sources
- Improve water use efficiency
- Promote water reuse and recycling
- Continuously monitor water use performance
- Manage water-related risks at each operating site
Ratch Pathana Energy Public Company Limited
| Qualitative Targets 2025 | Performance 2025 |
|---|---|
| 1. Reduce dependence on new water sources in production processes | Implemented the RO Rejected Water Recycle Project to reuse water from the Reverse Osmosis process and reduce demand for new water. |
| 2. Improve water use efficiency in production processes | Improved water circulation efficiency in the cooling system to reduce water consumption. |
| 3. Minimize water losses in production systems | Conducted regular pipeline inspections to prevent leakage and reduce water losses. |
| 4. Promote water reuse | Reused water from the RO process within the production system. |
Sahacogen Green Co., Ltd.
| Qualitative Targets 2025 | Performance 2025 |
|---|---|
| 1. Improve water use efficiency in production processes | Implemented measures to improve water use efficiency in production processes. |
| 2. Promote water reuse | Promoted water reuse and recovery to reduce demand for new water sources. |
| 3. Improve water resource management efficiency | Coordinated water management with the industrial park’s utility system to support effective water management. |
Sahagreen Forest Co., Ltd.
| Qualitative Targets 2025 | Performance 2025 |
|---|---|
| 1. Strengthen water supply security for production | Maintained a 40-rai water storage reservoir with an approximate capacity of 370,000 m3 to secure operational water reserves. |
| 2. Improve wastewater management efficiency | Managed water through a sedimentation pond and the main water storage pond. |
| 3. Reduce wastewater discharge into the environment | Operated under the Zero Discharge approach to reduce wastewater discharge beyond the site. |
| 4. Promote water reuse | Reused treated water within the power plant premises to reduce dependence on new water sources. |
Targets in Water-Stressed Areas
The Company places importance on water management in areas where Baseline Water Stress is rated High or above. The results of the WRI Aqueduct Water Risk Atlas assessment are used to support the establishment of appropriate targets and site-specific water management measures.
Performance Against Targets 2025 Water Volume (m3)
Share of Site-level Performance in 2025
| Operating Site | Water Stress Level | 2025 Target (m3) | Actual Performance (m3) | vs. Target | Share of Total Performance | Status |
|---|---|---|---|---|---|---|
| Ratch Pathana Energy |
High
|
60,000 | 88,247 | +47.1% | 53.7% | Achieved |
| Sahacogen Green Power Plant |
Extremely High
|
54,000 | 52,878 | -2.1% | 32.2% | Under Monitoring |
| Sahagreen Forest Power Plant |
Extremely High
|
20,000 | 23,266 | +16.3% | 14.2% | Achieved |
| Group Total | - | 134,000 | 164,391 | +22.7% | 100% | - |
Challenges and Opportunities
Ratch Pathana and Affiliates has adopted a comprehensive approach to sustainable water management, focusing on water resource allocation, risk mitigation related to water scarcity, and continuous improvement in water use efficiency within operational processes. The Group recognizes that this area presents both challenges and business opportunities, as outlined below
 Challenges |
 Business Opportunities |
|---|---|
| 1. Water Scarcity Risks Although water is allocated from designated sources and reserve storage is in place, certain power plants—such as Ratch pathana Energy Power Plant, which relies on water sources spanning multiple provinces—remain at risk during periods of drought or flooding. These extreme weather events may disrupt access to key water sources, necessitating proactive contingency planning. |
1. Technological Advancement and Innovation The development of projects like RO Rejected Water Recycle and large-scale water reservoirs reflects the Company’s commitment to water innovation. These initiatives can position the Company to lead in water technology and potentially offer water treatment services to other industries in the future. |
| 2. Compliance with Regulations and Standards The Company must consistently comply with legal requirements related to water discharge quality, such as maintaining cooling water discharge temperatures below 40°C. This demands regular monitoring, upgrades, and ongoing improvements in water management systems to prevent environmental harm. |
2. Cost Reduction Implementing water recycling technologies within production processes helps reduce dependency on public raw water sources. This, in turn, lowers costs related to raw water intake and wastewater treatment, contributing to overall operational efficiency. |
| 3. Capital Investment Costs Investing in advanced water treatment systems, such as the RO Rejected Water Recycle system, and the construction of large-scale water reservoirs involves high upfront costs. Effective budget planning and forecasting of long-term returns on investment remain critical challenges. |
3. Partnerships with Government Agencies and Communities Collaborations with government entities—such as the Royal Irrigation Department and the Ministry of Natural Resources and Environment—as well as securing water supply agreements, create opportunities for long-term partnerships. These alliances enhance business stability and support future expansion strategies. |
Management Approach and Value Creation
Actions to Reduce Water Use
Ratch Pathana Energy Public Company Limited and its subsidiaries are committed to the efficient management of water resources with the objectives of reducing water consumption, reducing reliance on external water sources, and increasing the reuse and recycling of water. The Company applies the Reduce–Reuse–Recycle (3Rs) principles throughout its operations, together with measures to improve water-use efficiency, inspect and prevent water leakage, and continuously monitor water consumption and water quality, with the aim of promoting the efficient and sustainable use of water resources.
The Company has established a water management approach covering all operating locations, taking into consideration differences in geographical conditions, climate, water sources, water availability, utility infrastructure, and the level of water-related risk at each location. These factors are used to determine appropriate measures at both the site-specific and company-wide levels. The measures cover the reduction of new water intake, water reuse and recycling, improvements in water-use efficiency within production processes, leakage inspection and prevention, as well as preparedness for situations that may affect the continuity of water supply and business operations.
In addition, the Company promotes employee participation in water conservation and the responsible use of water resources through internal communication and awareness-raising activities. Each business unit is encouraged to participate in monitoring water consumption, identifying abnormalities and water leakage, and identifying opportunities to reduce water use and continuously improve resource efficiency. These efforts are intended to foster a culture of efficient water use across the organization.
In parallel, the Company incorporates the results of its Water Risk Assessment, site-specific information, and relevant water-resource conditions into its planning and the development of appropriate preventive and mitigation measures for each operating location. The Company continuously monitors water consumption, water quality, and the effectiveness of implemented measures. The monitoring results are used to review and improve water management practices in response to changing conditions.
Through these efforts, the Company aims to improve resource efficiency, reduce operational risks, and strengthen Water Security, thereby supporting business continuity and the long-term sustainability of its operations.
Site-specific Actions
Each operating site implements measures that are appropriate to its operational characteristics in order to improve water-use efficiency and reduce reliance on external water sources.
Ratch Pathana Energy Power Plant
Sahacogen Green Power Plant
Sahagreen Forest Power Plant
Company-wide Actions
The Company implements organization-wide measures to strengthen efficient water management across all operating sites.
Monitor and assess water consumption and water quality on an ongoing basis to ensure the effectiveness of the measures implemented. The Company also incorporates the results of its water risk assessments into the planning of preventive and impact mitigation measures for each operating site, enabling water management measures to be aligned with the specific risks and conditions of each location.
Water Risk Assessment
Ratch Pathana Energy Public Company Limited and its subsidiaries recognize the importance of assessing water-related risks alongside site-level water management. The assessment considers both current conditions and future trends to better understand pressures on water resources and support appropriate water management planning.
The Company uses the WRI Aqueduct Water Risk Atlas to assess Baseline Water Stress and Future Water Stress at its operating sites, together with relevant local context such as water sources, water use, water availability, and site-specific water management measures. The assessment covers three key operating sites:
Baseline Water Stress
The assessment results reflect water stress at the basin level, based on the WRI Aqueduct methodology, and do not directly represent the Company's actual water consumption.
The assessment results are used to support the establishment of water management targets, risk mitigation measures, water efficiency improvements, and long-term preparedness for potential water scarcity.
Operations in Water-Stressed Areas
Ratch Pathana Energy Public Company Limited places importance on responsible water resource management. The Company assesses the level of water stress at its operating sites using the WRI Aqueduct Water Risk Atlas to evaluate water-related risks under both current conditions and future trends.
The Baseline Water Stress assessment found that all 3 operating sites within the assessment scope, representing 100% of the assessed sites, are located in areas with High water stress or above. The Ratch Pathana Energy Power Plant in Chonburi Province, representing 1 site or 33.33%, is located in an area classified as High (40–80%), while the Sahacogen Green Power Plant in Lamphun Province and the Sahagreen Forest Power Plant in Kamphaeng Phet Province, representing 2 sites or 66.67%, are located in areas classified as Extremely High (>80%).
These results reflect that the Company has operations in water-stressed areas and continues to place importance on managing such risks. The Company uses the assessment results to support the development of water management measures that are appropriate to the context of each operating site. These measures cover improving water-use efficiency, reducing water consumption, reusing and recycling water, as well as continuously monitoring and evaluating water use.
These actions are undertaken to improve the efficiency of water resource use, reduce risks arising from water stress and water scarcity, and support the sustainable operation of the Company’s business together with surrounding communities.
| Project Location | Baseline (ปัจจุบัน) | 2023 (BAU) | 2050 (BAU) | 2050 (Pessimistic) |
|---|---|---|---|---|
|
Ratch Pathana Energy,
Chonburi
|
High
|
High
|
High
|
Extremely High
|
|
Sahacogen Green,
Lamphun
|
Extremely High
|
Extremely High
|
Extremely High
|
Extremely High
|
|
Sahagreen Forest,
Kamphaeng Phet
|
Extremely High
|
Extremely High
|
Extremely High
|
Extremely High
|
Remark:
- High: 40 - 80%
- Extremely High: > 80%
Water Consumption in Water-Stressed Areas
Ratch Pathana Energy Public Company Limited and its subsidiaries assess the level of water stress across their operating locations using the WRI Aqueduct Water Risk Atlas. The assessment found that all three power plants within the assessment scope are in areas with Baseline Water Stress levels ranging from High to Extremely High. In 2025, the total water consumption for production processes amounted to 2,160,085.82 cubic meters, representing 100% of the total water consumption for production processes.
| Operating Location | Water Stress Level | Water Consumption in 2025 | Share of Total Water Consumption |
|---|---|---|---|
| Ratch Pathana Energy, Chonburi |
High
|
1,425,985.00 m3 | 66.02% |
| Sahacogen Green, Lamphun |
Extremely High
|
338,016.82 m3 | 15.65% |
| Sahagreen Forest, Kamphaeng Phet |
Extremely High
|
396,084.00 m3 | 18.34% |
| Total | 2,160,085.82 m3 | 100% | |
Water Risk Management and Investment
Ratch Pathana Energy Public Company Limited and its subsidiaries recognize the importance of water resources to business continuity. The Company is committed to efficient water management, reducing risks associated with water scarcity, and minimizing impacts on communities and the environment. Key measures include securing reliable water sources, maintaining water reserves, improving water-use efficiency, treating wastewater, and promoting water reuse.
In 2025, Ratch Pathana Energy’s power plant used 1,425,985 cubic meters of water in its production processes and reused 88,246.70 cubic meters of water from the Reverse Osmosis (RO) system, equivalent to an approximately 6% reduction in water consumption through water reuse, exceeding the target of 4%. In addition, 100% of wastewater was treated prior to discharge.
The Company also implements site-specific measures to strengthen water security, including long-term water supply agreements and the provision of backup water sources. At Sahagreen Forest’s biomass power plant, a 40-rai water storage pond has been developed with an annual storage capacity of approximately 370,000 cubic meters, helping ensure sufficient water availability to support continuous electricity generation throughout the year.
Ratch Pathana Group places importance on managing environmental costs and investments to enhance resource efficiency, minimize environmental impacts from business operations, and promote effective air pollution control, water and wastewater management, and waste management. The Group also supports the development of innovative approaches and solutions that contribute to sustainable business operations.
| Cost Category | Total for Three Companies (THB) |
|---|---|
| Air Pollution Control | 1,640,210 |
| Water and Wastewater Management | 9,709,308 |
| Waste Management | 268,356 |
| Grand Total | 11,617,874 |
Note: The environmental costs presented above are calculated based on available data from the Company and its subsidiaries for 2025. The figures do not cover all environmental costs, as certain data is still being collected and has not yet been included in the calculation.
Stakeholders Directly Impacted
Business Partners
Community and Society
Employees
Shareholders
Customers
Government and relevant regulatory agencies
Stakeholder Engagement in Water-Stressed Areas
Ratch Pathana Energy Public Company Limited and its subsidiaries recognize that effective water risk management requires collaboration with relevant stakeholders, particularly in areas experiencing high levels of water stress. The Company therefore uses the results of the WRI Aqueduct Water Risk Atlas assessment to support the development of its water management approach and stakeholder engagement planning involving employees, customers, suppliers and contractors, communities, government agencies, as well as other relevant organizations and businesses in each operating area.
The Company’s approach focuses on raising awareness and facilitating information exchange on water conditions and water-related risks, promoting efficient water use, reducing freshwater withdrawal, encouraging water reuse and recycling, and obtaining feedback and concerns from stakeholders. The information gathered is taken into consideration when developing water management measures appropriate to the context and risk profile of each operating area.
1. Collaboration with Customers to Improve Water Use Efficiency
The Company promotes collaboration with customers to improve water use efficiency by recovering condensate water generated from steam used by its customer, Thai President Foods Public Company Limited, and reusing it within the power plant. The condensate is formed when steam that has been used cools and changes back into water before being returned for use in the cooling process. This approach helps reduce freshwater demand, minimize water loss, and improve water-use efficiency within the production process, while supporting water reuse and the efficient use of resources in accordance with circular economy principles.
2. Collaboration within the Industrial Park to Promote Water Recycling
Sahacogen Green Power Plant – Reuse of Treated Water for Green Areas
Sahacogen Green Power Plant manages water remaining from its production process by transferring it to the water treatment system of Saha Group Industrial Park – Lamphun. After the water has been treated in accordance with applicable standards, it is reused for irrigation and maintenance of green areas of various companies located within the industrial park.
This initiative reflects collaboration between the power plant and the industrial park management in returning water resources for beneficial use. It helps reduce freshwater demand for green-area maintenance and supports the efficient and sustainable management of shared water resources within the industrial area.
3. Collaboration with Communities on Water Resource Conservation
In 2025, Sahacogen Green Co., Ltd. collaborated with local administrative organizations and communities in Lamphun Province under the Agricultural Service and Technology Transfer Center Promotion and Support Program. The Company participated in a vetiver grass planting activity along the Rong Ha irrigation canal, contributing to water resource and ecosystem conservation at the local level.
The initiative supports water and ecosystem management in several areas, including:
- Flood prevention: Supporting the maintenance and rehabilitation of areas along the irrigation canal to help maintain drainage efficiency and reduce flood risks during the rainy season.
- Strengthening water security: Supporting the retention of soil moisture and water for agricultural use during the dry season, while contributing to community food security.
- Soil and riparian ecosystem conservation: Helping reduce soil and riverbank erosion, improve soil moisture retention, and support the ecological balance of areas surrounding water sources.
The Company is committed to strengthening collaboration with stakeholders throughout the value chain and across its operating areas to jointly reduce the impacts and risks associated with water stress and water scarcity. The Company also promotes responsible water resource management by taking into consideration business continuity, community water needs, and the ecological balance of its operating areas.
