8th International Forum on Sustainable Future in Asia / 8th NIES International Forum: How has Asia-Pacific Integrated Model (AIM) committed to decarbonization?

16 February 2023, 13:30-17:35 JST

The National Institute for Environmental Studies (NIES) has been developing and applying the Asia-Pacific Integrated Model (AIM), an integrated assessment model, to various countries in cooperation with research institutes in Japan and abroad, especially in Asia. As a result, the simulation results using AIM were used in Indonesia and Thailand to develop their long-term strategies. In addition, we have contributed to the climate policies of several Asian countries, such as providing simulation results for Vietnam to achieve the net-zero GHG emissions by 2050. In the global warming countermeasures plan approved by the Cabinet in 2021, the "Support of development of Long-term strategy, revision of NDCs and capacity development of institutional capacity and implementation capabilities in private companies based on the Asia-Pacific Integrated Model (AIM) will help to increase the ambition of partner countries and strengthen their efforts toward decarbonisation.” This means that AIM's contribution to evidence-based policy making is expected in the Asian countries. On the other hand, in order for scenario analyses to contribute to the realisation of a decarbonised society in Asia, the models used in the AIM need to evolve to include more detailed models in addition to the conventional enduse model and economic model, so that they can deal with social changes and specific countermeasures.

In this 8th NIES International Forum, we will introduce the researches on AIM initiatives in Asian countries, share opinions from policy makers and other stakeholders, discuss how the findings from scenario analyses can be implemented in the real society to realise a decarbonised society, and further discuss the challenges and expectations for the future of scenario analyses and the AIM. By sharing the issues and expectations for the AIM in the future, we will clarify the direction in which the AIM can be an infrastructure for a decarbonised society.

Event Details

16 February 2023, 13:30-17:35 JST


Programme.pdf(3.04 MB)

National Institute for Environmental Studies (NIES)

E-mail: [email protected]

Presentation Materials

13:30-13:40 Welcome Adresses

MC: Marissa MALAHAYATI, National Institute for Environmental Studies (NIES)


Masahide Kimoto

President, NIES


President, Institute for Global Environmental Strategies (IGES)

Keynote Speech 1 : AIM Initiatives and Experience in Japan

Toshihiko Masui

Director, Social Systems Division, NIES

Keynote Speech 2 : Japan's Support Towards Asia's Net-Zero Emissions

Junko Nishikawa

Director for Sustainable Infrastructure, Ministry of the Environment, Japan

Session 1: Toward the Realization of a Decarbonized Society
Chairperson:Tatsuya Hanaoka
Head, Global Sustainability Integrated Assessment Section, Social Systems Division, NIES

Case Study 1: China

Jiang Kejun
Senior researcher, Energy Research Institute (ERI), Chinese Academy of Macro-Economic Research, China


Case Study 2: Indonesia

Development of Decarbonization Pathway in Indonesia Energy Sector
Ucok W.R. Siagian

Senior Researcher, Center for Research on Energy Policy, Institut Teknologi Bandung, Indonesia


Panel Discussion

Facilitator: Tatsuya Hanaoka

Short Presentations:

  • TBD
  • Makoto Kato (Board Member, Overseas Environmental Cooperation Center, Japan)


  • Jiang Kejun
  • Ucok W.R. Siagian
  • TBD
  • Makoto Kato
15:30-15:45 Break
Session2 : AIM as a Policy Support Tool
Chairperson: Yosuke Arino
Researcher & Project Leader, Mitigation and Adaptation Integration, Strategic Management Office, IGES

Case Study 3: Malaysia

Pathway to Decarbonized Malaysian cities using Asia Pacific Integrated (AIM) modelling 
Chin Siong HO
Department of Urban & Regional Planning, Faculty of Built Environment and Surveying,
University of Technology Malaysia (UTM), Malaysia



Case Study 4 : Thailand

Bundit Limmeechokchai
Associate Professor, Thammasat University Research Unit in Sustainable Energy and Built Environment, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Thailand



Panel Discussion

Facilitator: Yosuke Arino

Short Presentations: 

  • TBD
  • Tomoko Ishikawa (Joint Director, Knowledge and Communications, Strategic Management Office, IGES)


  • Chin Siong HO
  • Bundit Limmeechokchai
  • TBD
  • Tomoko Ishikawa
Discussion Summary

Global Perspective and Sustainability

Tatsuya Hanaoka


Policy Support Perspective

Yosuke Arino

17:30-17:35 Closing Adresses

Yuichi Moriguchi
Vice President, NIES, Japan