Organization information

Board Executive Directors

Number of board directors

Conformity with Article No.10 of the Law on the Japan Atomic Energy Agency, An Independent Administrative Institution

  • President: 1
  • Vice President: 1
  • Executive Director: Up to 6
  • Auditor: 2

President

KOGUCHI Masanori

Duties:
Preside over JAEA's operations
Education:
March 1978 : Graduated from the School of Law, Hokkaido University
Professional history:
April 2022 : President, Japan Atomic Energy Agency
June 2020 : Counselor, Mitsubishi Heavy Industries, Ltd. (MHI)
June 2018 : Board Member, Executive Vice President, CFO (MHI)
April 2018 : Board Member, Executive Vice President, CFO, Director of the Office of Strategic Planning and Promotion (MHI)
June 2015 : Board Member, Managing Director, CFO, Director of the Office of Strategic Planning and Promotion (MHI)
April 2014 : Board Member, Operating Officer of the Office of Strategic Planning and Promotion (MHI)
April 2013 : Director of the General Accounting Division (MHI)
April 2008 : Director of The Funding Division (MHI)
April 1978 : Joined General Affairs Dept. of MHI
Tenure:
March 31, 2026

Executive Vice President

HAYASHI Takahiro

Duties:
  • Preside over the Agency's operations assisting the President
  • In charge of Tsuruga Head Office as Senior Director General
  • Oversee affairs relating to the functional enhancement of administrative departments
Education:
March 1992 : Graduated from School of Science and Engineering, Tokyo Institute of Technology
March 1990 : Graduated from Department of Applied Physics, Tokyo Institute of Technology
Professional history:
April 2025 : Executive Vice President, Japan Atomic Energy Agency (JAEA)
April 2024 : Executive Director, Japan Atomic Energy Agency (JAEA)
April 2022 : Deputy Director-General, Research and Development Bureau, Ministry of Education, Culture, Sports, Science and Technology (MEXT)
July 2021 : Director, Policy Division of the Minister's Secretariat, MEXT
August 2020 : Director, Yokohama Branch, RIKEN
January 2019 : Director, Research and Development Policy Division, MEXT
July 2017 : Director for Atomic Energy Bureau of Science, Technology, Innovation and Policy Cabinet Office
January 2016 : Director, Ocean and Earth Division, MEXT
Tenure:
March 31, 2026

Executive Director

OHSHIMA Hiroyuki

Duties:
  • Oversee affairs relating to construction, and Nuclear Energy Research and Development Domain
  • Supervise affairs relating to Oarai site
Education:
March 1986 : Graduated from Department of Nuclear Engineering, School of Engineering, The University of Tokyo
March 1984 : Graduated from Faculty of Engineering, The University of Tokyo
Professional history:
April 2021 : Executive Director of the Japan Atomic Energy Agency (JAEA)
April 2018 : Deputy Director General of Oarai Research and Development Institute and Director General of Fast Reactor Cycle System Research and Development Center, Sector for Fast Reactor and Advanced Research and Development, JAEA
April 2015 : Director of Fast Reactor Computational Engineering Department, Advanced Fast Reactor Cycle System Research and Development Center, Sector of Fast Reactor Research and Development, JAEA
July 2011 : Deputy Director of JSFR Systems Development Planning Office, Advanced Nuclear System Research and Development Directorate, JAEA
July 2010 : Senior Principal Researcher of Advanced Nuclear System Research and Development Directorate, JAEA
Tenure:
March 31, 2026

Executive Director

NAGASATO Yoshihiko

Duties:
  • Oversee affairs relating to Safety and Nuclear Security Administration Head Office, and Decommissioning and Waste Managementr Domain
  • Supervise affairs relating to Nuclear Fuel Cycle Engineering Laboratories, Ningyo-toge site, Tono site, Horonobe site and Aomori site
Education:
March 1988 : Graduated from School of Science, Kyushu University
March 1986 : Graduated from Department of Chemistry, Faculty of Science, Kyushu University
Professional history:
April 2024 : Executive Director, Japan Atomic Energy Agency (JAEA)
April 2023 : Director General of Nuclear Fuel Cycle Engineering Laboratories, Sector of Nuclear Fuel, Decommissioning and Waste Management Technology Development, JAEA
April 2021 : Deputy Director General of Nuclear Fuel Cycle Engineering Laboratories, Sector of Nuclear Fuel, Decommissioning and Waste Management Technology Development, JAEA
April 2019 : Deputy Director General of TRP Decommissioning Center, Nuclear Fuel Cycle Engineering Laboratories, Sector of Nuclear Fuel, Decommissioning and Waste Management Technology Development, JAEA
April 2016 : Director of Technology Development Department, Tokai Reprocessing Technology Development Center, Nuclear Fuel Cycle Engineering Laboratories, Sector of Decommissioning and Radioactive Waste Management, JAEA
April 2014 : Deputy Director of Technology Development Department, Tokai Reprocessing Technology Development Center, Nuclear Fuel Cycle Engineering Laboratories, Sector of Decommissioning and Radioactive Waste Management, JAEA
July 2013 : Senior Principal Engineer of Technology Development Department, Tokai Reprocessing Technology Development Center, Nuclear Fuel Cycle Engineering Laboratories, Tokai Research and Development Center, JAEA
Tenure:
March 31, 2026

Executive Director

MOMMA Toshiyuki

Duties:
  • Oversee affairs relating to Science and Technology Promotion Domain
  • Supervise affairs relating to Nuclear Safety and Emergency Preparedness Institute, and Nuclear Science Resarch Institute
Education:
March 1990 : Graduated from Department of Nuclear Engineering, School of Engineering, Hokkaido University
March 1988 : Graduated from Department of Nuclear Engineering, Faculty of Engineering, Hokkaido University
Professional history:
April 2024 : Executive Director, Japan Atomic Energy Agency (JAEA)
April 2021 : Director of Policy Planning and Administration Department, JAEA
April 2019 : Director of R&D Program Management Department, JAEA
January 2018 : Director of Radioactive Waste Management Department, JAEA
April 2017 : Deputy Director of Radioactive Waste Management Department, JAEA
July 2016 : Deputy Director of Office of Strategic Planning, JAEA
April 2014 : Senior Principal Engineer of Office of Strategic Planning, JAEA
July 2013 : Senior Principal Engineer of Department of Partnership Operations for Plant Restoration, Headquarters of Fukushima Partnership Operations, JAEA
Tenure:
March 31, 2026

Executive Director

KONTOH Masaaki

Duties:
  • Supervise affairs relating to Tsuruga site
  • In charge of Tsuruga Head Office as Deputy Senior Director General, and Decommissioning and Waste Management Domain as Deputy Senior Director General
Education:
March 1992 : Graduated from Department of Metallurgy. School of Engineering Kyoto University
March 1990 : Graduated from Faculty of Engineering, Kyoto University
Professional history:
April 2024 : Executive Director, Japan Atomic Energy Agency (JAEA)
July 2021 : General manager in charge of nuclear safety enhancement, Corporate Planning Office, Kansai Electric Power Company, Inc. (KEPCO)
July 2017 : Chief Manager of Quality Assurance Group, Nuclear Power Generation Department, Nuclear Power Division, KEPCO
July 2015 : Manager of Nuclear Fuel Cycle Business Group, Nuclear Fuel Cycle Office, KEPCO
December 2012 : Seconded to Washington Policy & Analysis, United States of America
June 2010 : Manager of Nuclear Power Planning Group, Nuclear Power Planning Department, Nuclear Power Division, KEPCO
June 2008 : Manager of Safety & Emergency Preparedness Group, Nuclear Power Generation Department, Nuclear Power Division, KEPCO
July 2005 : Manager of Takahama Power Station Quality Assurance Office, KEPCO
June 2002 : Leader of Power Generation Group, KEPCO
April 1992 : Joined KEPCO
Tenure:
March 31, 2026

Executive Director

UEDA Takuro

Duties:
  • Oversee affairs relating to research and development promotion
  • Supervise affairs relating to Fukushima site
  • In charge of Decommissioning and Waste Management Domain as Deputy Senior Director General
Education:
March 1991 : Graduated from School of Engineering for Nuclear Engineering, Tohoku University
Professional history:
April 2025 : Executive Director, Japan Atomic Energy Agency (JAEA)
July 2024 : Senior Executive Officer, JAEA
April 2020 : Vice President for the Industry-University Cooperation, Tohoku University
July 2019 : Director for Emergency Preparedness and Response, Nuclear Disaster Management Bureau, Cabinet Office
June 2016 : Executive Director, Nuclear Damage Compensation and Decommissioning Facilitation Corporation
July 2014 : Manager, General Affairs and Management Department, Niigata Prefecture
June 2012 : Director for Industrial Promotion for Okinawa Affairs, Cabinet Office
July 2009 : Manager, Environmental Protection Guidance Office, Industrial Science and Technology Policy and Environment Bureau, Ministry of Economy, Trade and Industry
April 1991 : Joined Ministry of Economy, Trade and Industry
Tenure:
March 31, 2026

Executive Director

UEDA Mitsuyuki

Duties:
  • Oversee affairs relating to policy planning and administration, overseas business strategy, general affairs, human resources development, financial affairs, contract, international affairs, audit, computational science & e-systems, and integrated support for nuclear nonproliferation, security, and human resource development
Education:
March 1997 : Completed Master’s Program, Department of Aeronautics and Astronautics, The University of Tokyo
March 1995 : Graduated from Department of Aeronautics and Astronautics, The University of Tokyo
Professional history:
April 2025 : Executive Director, Japan Atomic Energy Agency (JAEA)
April 2024 : Director, Policy Division, R&D Bureau, Ministry of Education, Culture, Sports, Science and Technology (MEXT)
August 2022 : Director, Space Development and Utilization Division, R&D Bureau, MEXT
July 2021 : Director, International Strategy Planning, S&T Policy Bureau, MEXT
July 2019 : Counsellor, Strategy and Policy Planning, National Center of Incident Readiness and Strategy for Cybersecurity (NISC), Cabinet Secretariat
July 2017 : Director, International S&T Affairs Division, S&T Policy Bureau, MEXT
July 2015 : Director for Quantum Science and Technology, MEXT
July 2013 : Director for Budget Planning and Coordination, Budget and Accounts Division, Minister’s Secretariat, MEXT
July 2011 : Director for Basic Research Promotion, MEXT
June 2007 : First Secretary and Nuclear Energy Attache, Embassy of Japan U.S.A.
April 1997 : Joined Atomic Energy Bureau, Science and Technology Agency (former agency of MEXT)
Tenure:
March 31, 2026

Auditor

KUMAGAE Masashi

Duties:
Audit the Agency's operations
Education:
March 1989 : Graduated from Faculty of Law, The University of Tokyo
Professional history:
June 2020 : Managing Executive Officer, Development Bank of Japan Inc. (DBJ)
June 2017 : General Manager, Corporate Finance Dept. Division 4, DBJ
April 2015 : General Manager, Corporate Finance Dept. Division 3, DBJ
June 2013 : Special Assistant to the President and CEO, Secretariat Office, DBJ
November 2012 : Deputy General Manager, Secretariat Office, DBJ
May 2011 : Deputy General Manager, Risk Management Dept., DBJ
October 2009 : Deputy General Manager, Kansai Branch, DBJ
April 1989 : Dept. for Regional Development, The Japan Development Bank
Tenure:
the approval date of the FY 2025 financial statements

Auditor (part-time)

SEKIGUCHI Mina

Duties:
Audit the Agency's operations
Education:
July 1995 : Certified Public Accountant (CPA) of the State of Texas
December 1992 : Graduated from The University of Texas at Arlington Graduate School with MBA
March 1986 : Graduated from Department of English, Dokkyo University
Professional history:
July 2022 : Outside Director, TRAINOCATE Holdings, ltd.
June 2022 : Outside Director, Penta-Ocean Construction co., ltd.
Managing Partner, RESONANCIA LLC
Sep. 2020 : Climate Change and Decarbonization Advisory Lead-KPMG Sustainable value Japan, KPMG Japan
July 2013 : Head of Energy & Natural Resources, KPMG Asia Pacific Region
July 2012 : Head of Energy & Infrastructure Sector, KPMG Japan
Managing Director, KPMG AZSA LLC
July 2006 : KPMG FAS Co.
July 1999 : Global Management Directions, ltd.
September 1996 : Asahi & Co. (Current KPMG AZSA LLC)
April 1993 : Dallas Office, Arthur Andersen & Co.
Tenure:
the approval date of the FY 2025 financial statements