ASE Technology Holding Co Ltd

Sustainability Report

Report overview

The report describes ASEH's 2025 sustainability performance across its group operations, including a long-term net-zero target validated by SBTi and a 22.99% renewable-energy share. It reports 1,422 carbon-reduction projects that saved 4,919,620 GJ and reduced emissions by 722,184 tCO2e. The report also records 9,810,299 tCO2e of Scope 3 emissions, 6,922,674 m3 of water consumption and 81,717 tons of waste generated.

Document

Report type: Sustainability Report
Class: Dedicated
Scope: Full report
Fiscal year: 2025
Period: 1 January 2025 – 31 December 2025
Language
Pages
File size
Restatement: Disclosed

Standards & Assurance

Standards

GRI
SASB
TCFD
ISSB
ESRS
Integrated Reporting Framework
GHG Protocol
EU Taxonomy
CDP
Other

Commitments

UN Global Compact
UN Guiding Principles
Science Based Targets initiative

Ratings

GRI level
SBTi status

Assurance

Provider
Level
Standard
Scope
Statement included
Metrics assured

ESG & Materiality

ESG data

Indicators available in this report:

Scope 1 emissions
Scope 2 emissions
Scope 3 emissions
Energy consumption
Renewable energy
Water consumption
Waste
Employees
Workplace fatalities
Net zero target

Materiality

Assessment
Basis
Matrix

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