ASEAN Taxonomy for Sustainable Finance V4 Application to Port Infrastructure (framework illustration)
An implemented Southeast Asian port investment-screening example has not yet been verified. The text below is framework background only.
The ASEAN Taxonomy Board released the ASEAN Taxonomy for Sustainable Finance Version 4 on 6 November 2025, establishing technical screening criteria for classifying sustainable economic activities across key sectors, including Transportation and Storage; Construction and Real Estate; Electricity, Gas, Steam and Air Conditioning; and Water Supply, Sewerage and Waste Management (ASEAN Taxonomy Board, 2025). Version 4 builds on prior iterations (released in 2021, 2023, and 2024) to create a regional framework that references the EU Taxonomy and serves as a reference for national taxonomies in Singapore and Indonesia, while reflecting development status and climate priorities of ASEAN member states.
Port operators in ASEAN DMCs can apply the ASEAN Taxonomy Version 4 to systematise investment screening for capital projects, helping to ensure that financed activities contribute materially to climate change mitigation or adaptation objectives (ASEAN Taxonomy Board, 2025). The ASEAN Taxonomy technical screening criteria establish specific performance thresholds and qualitative requirements.
The taxonomy approach may also support investor confidence in port green bonds and sustainability linked loans, although no port-specific evidence of this effect is cited here.
Transferability
For ASEAN DMCs, the ASEAN Taxonomy Version 4 provides a standardized methodology for port operators to conduct sustainability screening of capital investments. Port authorities in Viet Nam, Thailand, the Philippines, Indonesia, and Malaysia can adopt the ASEAN Taxonomy framework to develop port specific green finance investment policies. The taxonomy approach may strengthen the credibility of port green bond frameworks and support access to global institutional investor capital seeking investments aligned with science based environmental criteria.
Sources
All information used for this case study was based on publicly available resources.