[GRI 2-1 (2021), 2-2 (2021), 2-3 (2021), GRI 2-14 (2021), 3-1 (2021), 3-2 (2021), 3-3 (2021)]

EGCO Group conducts materiality assessment annually with consideration to related internal and external operations, including potential positive and negative impacts they can have on the company, stakeholders, communities, and society throughout the organization’s value chain. EGCO Group also assesses key issues that align with stakeholders’ expectations covering economic, social, and environmental (ESG) dimensions. The identified material topics are incorporated into EGCO Group’s business operations and used as a framework for reporting the annual report which covers operations for companies under EGCO Group’s operational control and joint ventures both in Thailand and overseas.

Process to determine Material Topics

List of Material Topics

In 2025, EGCO Group identified 16 material topics. The identified material topics have changed from the previous year in response to global trends and the needs and expectations of stakeholders regarding EGCO Group's business operations.

EGCO Group 2025 Material topics are as follows:

No. Material Topics Impact Level
1 Opportunities in Competition ECON 1 Value Creation
2 Climate Change and Emissions ENVI 1 Value Creation
3 Power Generation ECON 2 Value Creation
4 Digitalization and Innovation ECON 3 Enabler
5 Occupational Health and Safety SOC 1 Enabler
6 Ecology and Biodiversity ENVI 2 Enabler
7 Energy Management ENVI 3 Enabler
8 Risk and Crisis Management ECON 4 Enabler
9 Human Capital Management SOC 2 Enabler
10 Corporate Citizenship SOC 3 Enabler
11 Corporate Governance ECON 5 Enabler
12 Waste Management ENVI 4 Foundation
13 Water Management ENVI 5 Foundation
14 Supply Chain Management ECON 6 Foundation
15 Human Rights SOC 4 Foundation
16 Data Protection and Cybersecurity ECON 7 Foundation
Definition (Risks and Opportunities)
Competition opportunities refer to EGCO Group’s ability to create long-term business value from the energy transition, directly affecting revenue growth and competitiveness. EGCO Group expands renewables, low-carbon investments, and resilient business models to mitigate market risks.
Actual and Potential Impacts

Lead to lower electricity prices, greater choice, improved service, and more innovative energy products for customers.

Lose jobs in traditional generation sectors can occur, necessitating workforce reskilling and community adaptation.

EGCO Risk Category
  • Strategic Risk
  • Financial Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Customers
  • Shareholders
  • Government Agencies
  • Employees
  • Communities
  • Creditors
  • Supplier and business partner
  • Investors
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 201: Economic Performance (2016): 201-1

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Climate Climate Strategy and Market Opportunities Overview

One Report: Opportunities in Competition

Definition (Risks and Opportunities)
Climate change and emissions pose risks to EGCO Group’s assets, costs, and operations. EGCO Group addresses these through Net Zero targets, clean energy expansion, efficiency improvement, and readiness for carbon-related regulations.
Actual and Potential Impacts

Accelerate shift to low-carbon energy by investing in renewable energy, storage, and new technologies to drive innovation and market opportunities.

Increase compliance with emission regulations, e.g., carbon taxes, raising operating costs that may be transferred to customers.

EGCO Risk Category
  • Strategic Risk
  • Operational Risk
  • Financial Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Long-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Customers
  • Shareholders
  • Government Agencies
  • Employees
  • Communities
  • Creditors
  • Supplier and business partner
  • Investors
  • Society
  • Contractors and subcontractors
  • Media
  • NGO
SDGs
GRI Topic Standards

GRI 305: Emission (2016): 305-1*, 305-2*, 305-3*, 305-7*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Climate Strategy and Market Opportunities Overview

Climate Impact Valuation

One Report: Climate Change

*External assurance

*External assurance

Definition (Risks and Opportunities)
Power generation refers to ensuring reliable and continuous electricity supply, directly affecting revenue stability and asset value. EGCO Group focuses on operational excellence, plant reliability, secure transmission systems, and product stewardship.
Actual and Potential Impacts

Ensure reliable and stable power generation to minimize outages and support continuous electricity delivery through off taker.

Cause negative impacts on customers if generation lacks stability, leading to delivery disruptions and higher risks for stakeholders.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
Stakeholders
  • Customers
  • Shareholders
  • Government agencies/Regulators
  • Employees
  • Community
  • Creditors
  • Supplier and business partner
  • Investors
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 2: General Disclosures (2021)

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Power Generation Stability & Capability

Power Generation Impact Valuation

One Report: Power Generation

Definition (Risks and Opportunities)
Digitalization and innovation are critical to EGCO Group’s efficiency, cost structure, and competitiveness. EGCO Group applies data analytics and AI to improve operations, create new revenue opportunities, and manage technology-related risks responsibly.
Actual and Potential Impacts

Improve efficiency and resource use, reducing impacts and expanding access to sustainable solutions.

Require new skills and potentially displace jobs in traditional roles.

EGCO Risk Category
  • Strategic Risk
  • Organization Structure Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Medium-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
Stakeholders
  • Customers
  • Employees
  • Supplier and business partner
  • Creditors
SDGs
GRI Topic Standards

GRI 2: General Disclosures (2021)

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Innovation Management Overview

Definition (Risks and Opportunities)
Occupational health and safety directly affect business continuity and accident-related costs. EGCO Group applies international OHS systems, preventive measures, and safety culture to reduce operational disruptions.
Actual and Potential Impacts

Proactive safety management reduces risks for both employees and contractors, ensuring regulatory compliance.

Expose workers and, in worst cases, surrounding communities to safety risks, weakening stakeholders’ trust in the EGCO Group.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level**
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Employees
  • Community
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 403: Occupational Health and Safety (2018): 403-9*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Occupational Health and Safety Overview

*External assurance
**The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.

Definition (Risks and Opportunities)
Biodiversity affects project approval, legal exposure, and long-term asset value. EGCO Group manages impacts through avoidance, mitigation, restoration, ecosystem conservation, and no-deforestation practices.
Actual and Potential Impacts

Integrate biodiversity protection into planning to reduce risks and enhance compliance.

Allow minor incidents to escalate if unmanaged, causing conflicts and long-term challenges.

EGCO Risk Category
  • Strategic Risk
  • Operational Risk
Cause of Impact
  • Operations
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Long-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Community
  • Supplier and Business Partner
  • Society
  • Contractors and subcontractors
  • NGO
SDGs
GRI Topic Standards

GRI 101: Biodiversity (2024)

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Biodiversity

Definition (Risks and Opportunities)
Energy management influences EGCO Group’s cost structure and exposure to energy price volatility. EGCO Group improves efficiency, optimizes processes, and manages energy systems systematically.
Actual and Potential Impacts

Reduce pollution and greenhouse gas emissions through effective energy management.

Cause pollution, harm health, and erode public trust when energy is poorly managed.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Long-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Power Generation
  • System Installation and Maintenance Business Unit
Stakeholders
  • Customers
  • Shareholders
  • Employees
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 302: Energy (2016):302-1*, 302-3*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Energy Efficiency Management

*External assurance

Definition (Risks and Opportunities)
Risk and crisis management affect financial losses and revenue continuity. EGCO Group applies enterprise risk management and business continuity planning, integrating financial, climate, and environmental risks.
Actual and Potential Impacts

Minimize accidents and hazards, strengthening trust and safety for nearby communities.

Cause severe disruptions, reputational damage, and loss of stakeholder trust if risk management is ineffective.

EGCO Risk Category
  • Strategic Risk
  • Operational Risk
  • Financial Risk
  • Compliance Risk
  • Organization Structure Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Customers
  • Shareholders
  • Government agencies/Regulators
  • Employees
  • Community
  • Creditors
  • Supplier and business partner
  • Investors
  • Contractors and subcontractors
  • Society
  • Media
  • NGO
SDGs
GRI Topic Standards

GRI 2: General Disclosures (2021)

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Risk and Crisis Management Overview

Definition (Risks and Opportunities)
Human capital is critical to productivity and long-term growth. EGCO Group develops skills, succession planning, diversity, and fair rewards to mitigate talent shortages and support revenue growth.
Actual and Potential Impacts

Enhances employee skills, engagement, and well-being, boosting productivity and retention.

Lead to low morale, high turnover, and reduce workforce capability if poorly managed.

EGCO Risk Category
  • Organization Structure Risk
Cause of Impact
  • Operations
  • Products/Services
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level**
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Employees
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 404: Training and Education 2016: 404-1

GRI 405: Diversity and Equal Opportunity 2016: 405-2*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Our Employees Overview

*External assurance
**The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.

Definition (Risks and Opportunities)
Corporate citizenship influences project acceptance and business continuity. EGCO Group engages stakeholders, invests in communities, and creates social value to reduce opposition and delay-related costs.
Actual and Potential Impacts

Contribute to social development, build goodwill and improve public perception of the company.

Fail to engage communities and stakeholders, resulting in reputational loss and social opposition to projects.

EGCO Risk Category
  • Strategic Risk
Cause of Impact
  • Operations
  • Products/Services
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Supporting Activities
Stakeholders
  • Employees
  • Community
  • Society
  • Media
  • NGO
SDGs
GRI Topic Standards

GRI 413: Local Communities (2016):413-1

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Corporate Social Responsibility Overview

One Report: Corporate Social Responsibility

Definition (Risks and Opportunities)
Corporate governance affects legal risk, reputation, and cost of capital. EGCO Group strengthens board oversight, regulatory compliance, ethics, anti-corruption policies, and tax transparency.
Actual and Potential Impacts

Ensure compliance, build investor confidence, and support sustainable business practices.

Damage reputation and stakeholder relationships if transparency and accountability are lacking.

EGCO Risk Category
  • Strategic Risk
  • Operational Risk
  • Financial Risk
  • Compliance Risk
  • Organization Structure Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level*
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Customers
  • Shareholders
  • Government agencies/Regulators
  • Employees
  • Community
  • Creditors
  • Supplier and business partner
  • Investors
  • Contractors and subcontractors
  • Society
  • Media
  • NGO
SDGs
GRI Topic Standards

GRI 2: General Disclosures (2021)

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Corporate governance overview

*The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.

Definition (Risks and Opportunities)
Waste management affects disposal costs and environmental risks. EGCO Group reduces waste at source, promotes reuse and recycling, applies circular economy practices, and manages hazardous waste properly.
Actual and Potential Impacts

Reduce exposure to harmful substances, leading to a healthier and safer environment for residents.

Increase environmental risks and community concerns if waste handling is inefficient.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level**
Double Materiality
Value Chain
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
Stakeholders
  • Employees
  • Community
  • Society
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 306: Waste (2020):306-3*, 306-4*, 306-5*

GRI 306 Effluents and Waste (2016):306-3*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Waste Management

Waste Management Impact Valuation

*External assurance
**The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.

Definition (Risks and Opportunities)
Water availability affects operational continuity and water-stress risk. EGCO Group improves efficiency, treats wastewater, and reuses water to control costs and reduce shutdown risks.
Actual and Potential Impacts

Prevent water pollution, benefiting community health and environmental quality through responsible wastewater discharge.

Strain local water resources and ecosystems if excessive water is used in cooling and generation.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Long-term impact

Financial Impact Level**
Double Materiality
Value Chain
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
Stakeholders
  • Employees
  • Community
  • Society
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 303: Water and effluents (2018): 303-3*, 303-4*, 303-5*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Sustainable Water

*External assurance
**The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.

Definition (Risks and Opportunities)
Supply chain performance affects cost control and operational continuity. EGCO Group applies fair supplier selection, supplier risk assessment, and sustainable procurement to reduce risk of operational disruption.
Actual and Potential Impacts

Enhance long-term resilience and compliance by integrating ESG criteria into procurement.

Harm reputation if poor oversight leads to non-compliance with environmental, safety, or labor standards.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level
Double Materiality
Value Chain
  • Raw Material Provision
Stakeholders
  • Supplier and business partner
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 2-6 Activities, value chain and other business relationships (2021)*

GRI 308: Supplier Environmental Assessment (2016): 308-1

GRI 414: Supplier Social Assessment (2016):414-1, 414-2

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Supply Chain Management Overview

*External assurance

Definition (Risks and Opportunities)
Human rights affect legal, supply chain, and reputational risks. EGCO Group applies UNGP-aligned policies and human rights due diligence across employees and business partners.
Actual and Potential Impacts

Protect community rights, promote equality, and build trust and social stability.

Harm vulnerable groups, increase social tension, and degrade community well-being when violations occur.

EGCO Risk Category
  • Operational Risk
  • Compliance Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level*
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Customers
  • Shareholders
  • Government agencies/Regulators
  • Employees
  • Community
  • Creditors
  • Supplier and business partner
  • Investors
  • Society
  • Contractors and subcontractors
  • Media
  • NGO
SDGs
GRI Topic Standards

GRI 2: General Disclosures (2021)

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Human Rights Overview

*The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.

Definition (Risks and Opportunities)
Data protection and cybersecurity affect disruption and financial loss risks. EGCO Group applies privacy controls, monitoring, auditing, and cyber incident response plans.
Actual and Potential Impacts

Protect stakeholder data and critical infrastructure from external threats through strong cybersecurity systems.

Cause outages or shutdowns if operational systems are attacked, affecting service reliability.

EGCO Risk Category
  • Operational Risk
Cause of Impact
  • Operations
  • Products/Services
  • Supply Chain
Impact Level: short-term / medium-term / long-term

Short-term impact

Financial Impact Level**
Double Materiality
Value Chain
  • Raw Material Provision
  • Power Generation
  • System Installation and Maintenance Business Unit
  • Other Relevant Power Business Units
  • Products and By-products
  • Supporting Activities
Stakeholders
  • Customers
  • Employees
  • Supplier and business partner
  • Contractors and subcontractors
SDGs
GRI Topic Standards

GRI 418: Customer Privacy (2016): 418-1*

Management of Material Topics: Policies, Commitments, Tracking of Actions Taken

For more information, please see Privacy Protection and Cybersecurity Overview

*External assurance
**The topic received a score of 0.00. This does not mean that it lacks impact on stakeholders or the business, but rather that it is currently considered not material from the stakeholders’ perspective.