AIIB, ADB, AIF Strengthen Collaboration on ASEAN Infra Initiatives

The Asian Infrastructure Investment Bank (AIIB), Asian Development Bank (ADB) and the ASEAN Infrastructure Fund (AIF) have signed a letter of intent (LoI) to enhance collaboration on ASEAN-related infrastructure initiatives, reaffirming the three institutions’ commitment to jointly supporting sustainable and resilient infrastructure development in the region. 


The signing took place during the launch of AIF Action Plan 2025–2028, held in conjunction with the 12th ASEAN Finance Ministers and Central Bank Governors’ Meeting (AFMGM) 2025 on April 10. It was witnessed by the Malaysian Finance Minister II Datuk Seri Amir Hamzah Azizan, ADB President Masato Kanda and heads of 10 ASEAN member states and Timor-Leste delegation.

The LoI outlines a framework for cooperation in financing high-impact infrastructure projects across ASEAN through AIF initiatives with respect to the ASEAN Power Grid (APG), the ASEAN Catalytic Green Finance Facility (ACGF) and beyond. It marks a significant step toward deeper engagement among the three parties, leveraging their collective expertise and resources, including aligning and pooling AIIB and ADB technical assistance, to accelerate the development of sustainable, inclusive and climate-resilient infrastructure.

“AIIB is committed to strengthening partnerships with ADB and AIF to drive impactful infrastructure investments in the region, particularly through the APG and ACGF,” said Rajat Misra, AIIB Acting Chief Investment Officer (Region 1). “Through this collaboration, we aim to mobilize financing for critical projects that will enhance connectivity, economic resilience and sustainable growth in ASEAN”.

“Partnerships are core to ADB’s support for Southeast Asian countries,” said Winfried Wicklein, ADB director-general for Southeast Asia Department. “By partnering with AIIB, we can enhance the scale and impact of infrastructure investments under AIF, promoting sustainable and inclusive growth at an important time for ASEAN”.

“AIF, in cooperation with ADB and AIIB, will strengthen its role as a catalyst for enhancing regional infrastructure and mobilizing financial resources,” said Alfredo Perdiguero, AIF administrator. “We are excited to work with to support ASEAN infrastructure priorities, including cross-border projects”.

The partnership will focus on partner dialogue, project origination and structuring, co-financing opportunities, technical cooperation and knowledge sharing in the areas of transportation, digitalization and energy, including projects linked to the ASEAN Power Grid and ACGF.

This LOI builds on AIIB’s growing engagement in Southeast Asia and underscores its strategic commitment to regional connectivity and sustainable development. AIIB and ADB will continue working together to identify and implement projects that drive long-term economic and social benefits across ASEAN.