【As of April 9, 2026】

Note: The organizational structure shown on this page is based on the 5th Mid-and-Long Term Plan (FY2021–FY2025). Updates to the new organizational structure are in progress.

Research Staff - Social Systems Division

Social Systems Division
Integrated Sustainability Assessment Section
Decarbonization Measures Assessment Section
System Innovation Section
Regional Planning Section
Economics and Policy Studies Section

Social Systems Division

TAKAHASHI Kiyoshi

Director
ASHINA Shuichi

Deputy Director
MASUI Toshihiko

Senior Principal Researcher
HIBIKI Akira

Group Leader
NAKANISHI Kosuke

Research Associate
RAJBHANDARI SAINJU Salony

Research Associate
ROSSITA Annuri

Research Associate

Integrated Sustainability Assessment Section

HANAOKA Tatsuya

Head
TAKAKURA Junya

Senior Researcher
TSUCHIYA Kazuaki

Senior Researcher
NISHIURA Osamu

Researcher
KIMURA Keiichi

Research Associate
KIM Sanghyuck

Research Associate

Decarbonization Measures Assessment Section

ASHINA Shuichi

Head(Additional Post)
Silva Herran Diego

Senior Researcher
KANAMORI Yuko

Chief Senior Researcher
HATA Sho

Researcher
KAWARASAKI Satoko

Research Associate

System Innovation Section

FUJII Minoru

Head
MAKI Seiya

Senior Researcher
HIRANO Yujiro

Prime Senior Researcher
ICHINOSE Toshiaki

Senior Research Associate

Regional Planning Section

MATSUHASHI Keisuke

Head
ONODERA Hiroaki

Researcher
MORI Yasufumi

Senior Research Associate
TSANI Tsamara

Junior Research Associate

Economics and Policy Studies Section

TAKAHASHI Kiyoshi

Head(Additional Post)
OKAGAWA Azusa

Senior Researcher
YAMAGUCHI Rintaro

Senior Researcher
ASAYAMA Shinichiro

Senior Researcher
KUBOTA Izumi

Chief Senior Researcher
HAYASHI Takehiko

Chief Senior Researcher
FURUKAWA Mariko

Research Associate