Materiality

AWC reviews and assesses the materiality annually to ensure that the Company has operated the business according to the expectations of stakeholders and the direction for business growth. In the materiality assessment, the Company considered various factors such as the organizational contexts, expectations of relevant stakeholders, global trends, sustainability directions, and the risks and opportunities that may impact the business operation. This aims to determine the target, indicators, plan, and implementation of initiatives for sustainability. In addition, the Company regularly monitors the performance of its strategy and long-term target to achieve the business vision and mission and create long-term value for the stakeholders. AWC also adopted international standards such as the Global Reporting Initiative: GRI, AA1000 Accountability Principles (2018), and the S&P Global Corporate Sustainability Assessment as guidelines for materiality assessment. This aims to enhance efficiency in the materiality assessment process. Moreover, the result of the materiality assessment is approved by the Corporate Governance and Sustainability Committee and Management Committee (MACO) every year. The purpose is to drive efficient sustainability action while achieving the mission of “Building a Better Future.” The process of materiality assessment is illustrated below.

The Process for Identifying Materiality Issues

Materiality
Identification
Process

Materiality matrix

The materiality assessment clarified in the previous section resulted in the Materiality Matrix, which displays AWC material issues importance based on what’s critical to stakeholders and essential to AWC, simultaneously revealing material issue’s significance.

In pursuing corporate sustainability agenda, AWC has positioned corporate governance and code of conduct as a foundation to operate, climate change as the essence of long-term sustainability, and risk management to safeguard AWC’s resilience. The other issues are captured to strengthen AWC’s abilities and deliver value creation to stakeholders in its entire value chain.

AWC Materiality Issue and KPI

Materiality Topic	Target by 2030	Progress
BETTER PLANET
Climate Change	Become a carbon-neutral organization (Scope 1 and 2)	Reduced GHG emission (Scope 1 & 2) per unit area 5.5% compared to 2019 baseline
Water Stewardship	Reduce 20% water consumption per revenue	Reduced water usage per revenue 80.5% compared 2019 baseline
Circular Economy	Manage waste from operating assets to achieve zero waste to landfill	Diverted 25% of landfill waste from our operations
Biodiversity	100% of projects have a net positive impact on biodiversity	Conducted biodiversity impact assessment using the WWF Biodiversity Risk Filter framework 100% of all projects
BETTER PEOPLE
Human Capital Development	100% of key positions have ready-now successors	73% of key positions have ready-now successors
Occupational Health and Safety	Zero accident rate from operations resulting in a fatality or permanent disability	0 fatalities
Community and Social Integration	Build strong relationships with 240 new communities in every project area and all business units, promoting the quality of life for people and society through the creation of all significant projects in 2030 with a social return on investment (SROI)≥1.5	In process of community survey and setting up SROI baseline
BETTER PROSPERITY
Corporate Governance	Receive 5 Golden Arrow recognitions from ACGS (ASEAN Corporate Governance Scorecard)	Submitted the ACGS Checklist 2024 to the Thai Institute of Directors (Thai IOD) for the ASEAN CG Scorecard assessment.
Economic Value Creation	Increased household income per capita of AWC’s employee	In process of targeting, and setting up quantitative measurement and baseline

Material Issues and Impacts for External Stakeholders

Material Issues	Output Metrics	Coverage of Business Activity	Impact Valuation	Impact Values (Million THB)	References	Impact Types	Significance for External Stakeholders
Circular Economy
	6,639.64 ton of waste diverted	100% of Operating Assets and Developing Assets (only assets in construction stage)	Social Cost of Carbon avoided from waste diverted = Total Waste diverted × Avg landfill EF (0.7933 tCO₂e/t) × Social Cost of Carbon (SCC) 208 USD/tCO₂e (2% discount rate)	37.41	TGO Emission Factor (landfill), US EPA (2023), SCC 208 USD/tCO₂e (2%)	Positive	Diverting waste from landfill reduces methane and CO₂ emissions, directly benefiting the environment and society. This metric highlights AWC’s positive contribution to climate action.
	8567.21 ton of landfilled waste			48.27	TGO Emission Factor (landfill), US EPA (2023), SCC 208 USD/tCO₂e (2%)	Negative	Landfilling waste generates GHG emissions that negatively impact the environment and society. Quantifying this makes the external cost visible to stakeholders.
Data Privacy & IT Security
	9 cases of protected phishing	38% of business activities related to customer and internal data management systems (Head Office + 12 of 33 Operating Assets)	Valuation proxy = Monetary fine × number of breaches avoided	45.00	Personal Data Protection Act B.E. 2562 (2019): Criminal Liability Section 79 Any Data Controller who violates the provisions under Section 27 paragraph one or paragraph two, or fails to comply with Section 28, which relates to the Personal Data under Section 26 in a manner that is likely to cause other person to suffer any damage, impair his or her reputation, or expose such other person to be scorned, hated, orhumiliated, shall be punished with imprisonment for a term not exceeding six months, or a fine not exceeding five hundred thousand Baht, or both.	Positive	Cyberattacks pose risks to customers, employees, and partners globally. Protecting data avoids financial loss, reputational damage, and systemic risk, reinforcing stakeholder trust.