การเปลี่ยนแปลงสภาพภูมิอากาศ
Climate Change

Environmental Governance

The Company has established a structured environmental management governance framework with clearly defined roles and responsibilities across organizational levels. Overall oversight is provided by the President and Chief Executive Officer, while plant-level implementation is led by the Vice President of the Plant. The Department Managers – Occupational Safety, Health and Environment at the Corporate and Plant levels drive environmental management policies, systems, and performance. At the functional level, the Section Managers – Environment and Safety oversee the implementation of environmental and safety programs, supported by designated officers responsible for monitoring, compliance, and operational control.

This governance structure ensures effective coordination between corporate and operational functions, supports consistent environmental performance and regulatory compliance, and promotes continuous improvement across all sites.

Participation With the Government

The Company actively collaborates with government agencies and participates in environmental certification and recognition programs as part of its commitment to sustainability. During the reporting year, several plants obtained certifications and awards from recognized institutions, including Carbon Footprint for Organization (CFO) from the Thailand Greenhouse Gas Management Organization (TGO) and Green Mining Awards from the Department of Primary Industries and Mines. In addition, selected plants received Green Star Awards and EcoFactory certifications from the Industrial Estate Authority of Thailand (IEAT), as well as Green Industry Awards Level 4. These certifications reflect the Company’s compliance with environmental standards and its openness to external audits, including participation from community representatives in environmental performance assessments

Preparation for Environmental Impact Assessment (EIA)

The Company conducts Environmental Impact Assessment (EIA) processes across all operating plants, including the preparation, disclosure, and submission of environmental impact and mitigation data to the Office of Natural Resources and Environmental Policy and
Planning (ONEP). As part of its commitment to transparency, the Company facilitates plant visits for community representatives and relevant stakeholders. Environmental complaints are
systematically recorded and addressed, with mitigation actions and follow-up measures communicated to ensure effective resolution and continuous environmental improvement.

Participation from Employees and Business Partners

The Company promotes environmental awareness and responsible practices among employees, contractors, and business partners. Employees and contractors receive training on key environmental topics, including waste segregation and proper disposal, as part of the ISO 14001 environmental management system. The Company also encourages business partners to comply with its environmental policies and requirements, supporting alignment across the value chain and strengthening overall environmental performance.

Legal and Regulatory Compliance

The Company maintains a comprehensive environmental monitoring system to ensure compliance with applicable laws and regulatory requirements. Key environmental indicators, including air emissions, greenhouse gas emissions, and waste disposal, are regularly measured and reported to relevant authorities. Air quality monitoring is also conducted in surrounding areas to ensure environmental quality remains within prescribed standards, with performance consistently meeting or exceeding regulatory requirements.

Monitoring results are reviewed and reported monthly, including to the Company’s CSR and Sustainability Committee, to ensure effective oversight and continuous improvement. The Company also engages with surrounding communities and neighboring businesses through regular meetings to address feedback, concerns, and complaints. Environmental Impact Assessments (EIA) are conducted as required, while continuous investments are made to enhance environmental control systems, including dust collection upgrades and the implementation of Continuous Emission Monitoring Systems (CEMS) across all plants.

Energy management is further strengthened through dedicated committees and initiatives focused on improving efficiency, minimizing energy losses, and aligning production planning with energy optimization objectives.

FY26 Performance  unit:Baht

Energy Efficiency and GHG Emissions

The Company recognizes energy efficiency and greenhouse gas (GHG) emissions management as key priorities in addressing climate change impacts associated with its operations, products, and services. As an energy-intensive steel manufacturer, the Company faces risks and opportunities across its value chain, including regulatory changes, increasing emission reduction expectations, carbon pricing, and emerging mechanisms such as the Carbon Border Adjustment Mechanism (CBAM), which may affect costs and competitiveness.

To address these risks, the Company is committed to reducing GHG emissions within its operational boundary through improving energy efficiency, optimizing production processes, adopting cleaner and lower-emission technologies, and promoting renewable energy. The Company also implements initiatives to enhance green areas and support community-based tree planting, while engaging stakeholders, including local communities, to identify opportunities for emission reduction and improved environmental performance.

The Company supports applicable climate-related regulations and policies and remains committed to aligning its operations with legal requirements and evolving regulatory frameworks. Through these efforts, the Company aims to minimize climate-related risks, enhance resource efficiency, and support the transition toward low-carbon and sustainable operations.

Management Approach

The Company manages climate change, GHG reduction, and energy efficiency by improving operational efficiency, adopting low-emission and renewable energy solutions, and continuously monitoring resource consumption to support low-carbon and sustainable operations.

Climate Change Mitigation and Greenhouse Gas (GHG) Reduction

The Company is committed to mitigating climate change impacts from its operations, products, and services by systematically reducing greenhouse gas (GHG) emissions within its operational boundaries. This includes adopting low-emission technologies, using renewable and alternative energy sources, and continuously improving production processes to enhance energy and resource efficiency.

The Company also engages employees and local communities in identifying GHG reduction initiatives and implements tree planting activities within plant areas and surrounding communities to expand green spaces, support carbon sequestration, and enhance environmental quality. Tree planting activities are conducted across the Company’s operations, with progress regularly monitored as shown below:

The total number of trees planted in FY2026 reached 5,350 trees, reflecting the Company’s continued efforts to enhance green areas and support environmental sustainability. The Company also continuously monitors and evaluates energy and resource consumption that contribute to carbon emissions and develops action plans to reduce environmental impacts, improve operational efficiency, and support the transition toward low-carbon and sustainable industrial operations.

Energy Efficiency

The Company continuously improves energy efficiency and optimizes resource utilization across its operations through production process upgrades in steelmaking and rolling mill operations, the transition from fuel oil to natural gas, and investments in environmentally friendly technologies. The Company also promotes renewable and alternative energy sources, including solar rooftop installations, to reduce reliance on fossil fuels. The SCSC plant has implemented an Energy Management System certified under ISO 50001 to support systematic improvement in energy performance.

The Company monitors, records, and reports energy consumption to promote efficient energy use and continuous improvement, while encouraging employees to participate in energy-saving initiatives. All operating plants have established energy policies and dedicated energy management committees responsible for driving energy reduction initiatives, improving production energy efficiency, coordinating efforts across departments, and conducting regular monitoring and performance reviews. These efforts support the Company’s goals of optimizing resource use, reducing environmental impacts, and advancing sustainable operations.

FY27 Energy Efficiency Action Plan

n FY27, the Company plans to further enhance energy efficiency and reduce greenhouse gas emissions across its three facilities through a series of targeted technology upgrades. Key initiatives include the implementation of Smart Furnace technology and the replacement of recuperator systems at NTS, installation of new recuperators and the Melt Expert system at SCSC, and the deployment of the Melt Expert system along with burner nozzle upgrades at SISCO. These improvements are expected to optimize energy consumption, enhance process efficiency, and support the Company’s transition
toward lower-carbon and more sustainable operations.

Targets and Goals

Highlighted Implementation and Activities

Solar Rooftop Installation for Renewable Energy Adoption

The Company has expanded its renewable energy initiatives by installing solar rooftop systems across its plants at NTS, SCSC, and SISCO. These installations contribute to increasing the share of solar energy consumption to approximately 1.69% of total electricity usage, thereby reducing reliance on fossil fuel-based electricity and enhancing energy efficiency through onsite renewable generation. This initiative also supports the reduction of greenhouse
gas emissions and aligns with the Company’s commitment to low-carbon operations and sustainable energy management. In FY2026, the total installed solar rooftop capacity reached 12.405 MWp, generating approximately 12,163 MWh of electricity annually and resulting in a reduction of greenhouse gas emissions by approximately 5,777,603.3 kgCO2

Energy Efficiency Improvement Initiatives

In FY2026, the Company implemented energy efficiency initiatives across its production facilities to optimize fuel consumption and improve operational performance. At SISCO, initiatives included achieving zero Direct Reduced Iron (DRI) consumption for selected product grades and reducing Rotary Hearth Furnace (RHF) light-up time from 22 to 20 hours to minimize fuel use. At SCSC, efficiency was improved through reconditioning Electric Arc Furnace (EAF) electrode columns and applying data analytics to optimize furnace parameter control by phase. At NTS, process upgrades included installing an Oxy-NG vertical ladle preheater and implementing heat loss reduction measures in RHF1 operations.

These initiatives collectively improve energy efficiency, reduce fuel consumption and greenhouse gas emissions, and support the Company’s transition toward more sustainable and low-carbon operations.

Energy Conservation Awareness Program

The Company promotes energy conservation by encouraging employees to recognize the importance of efficient resource use and actively participate in energysaving practices aligned with their daily responsibilities. Awareness initiatives include regular communication, training sessions, and the use of internal communication channels to disseminate knowledge on energy efficiency. Employees are encouraged to adopt practical measures such as efficient electricity usage in office and operational areas. These efforts aim to strengthen awareness, build responsible behaviors, and foster a culture of energy
efficiency across the organization, supporting the Company’s commitment to sustainable operations and reduced environmental impact.

Natural Environment Restoration and Tree Planting Initiatives

The Company implements ecosystem restoration and conservation initiatives to enhance the value and functionality of natural resources, including plants, soil, water, and biodiversity. These efforts include environmental restoration and community-based programs such as aquatic species release, mangrove reforestation, and environmental awareness activities for surrounding communities, encouraging stakeholder participation and fostering environmental awareness among local communities and younger generations.

On World Environment Day, the Company organized tree planting activities across NTS, SCSC, and SISCO to promote environmental conservation and increase green spaces within and surrounding operational areas. The initiative contributes to improved environmental quality and carbon reduction efforts, with employees from various functions participating to strengthen environmental awareness and shared responsibility for sustainability. These activities demonstrate the Company’s commitment to integrating ecosystem restoration with employee engagement and community involvement.

Carbon Footprint Certification and GHG Quantification

The Company has been certified with the Carbon Footprint for Organization (CFO) by the Thailand Greenhouse Gas Management Organization (Public Organization) (TGO) across all three plants, namely NTS, SCSC, and SISCO. The most recent certification was obtained in November 2025, reflecting the Company’s commitment to quantifying and managing its greenhouse gas emissions in a systematic manner. The Company has consistently undertaken
this certification on an annual basis and will continue to maintain and renew the certification each year as part of its ongoing efforts to enhance climate-related performance, ensure transparency in emissions reporting, and support its transition toward low-carbon operations.

FY 2026 Performance