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Japan Atomic Energy Agency

Japanese Atomic Energy Company

The Japan Atomic Energy Agency is a Japanese atomic energy company. While it inherited the activities of both JNC and JAERI, it also inherited the nickname of JAERI, "Genken" 原研, an abbreviated word for "nuclear research". On April 10, 2007, JAEA officially joined the GNEP alliance.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Oct 2005Founded1
  • Industryresearch1
  • HeadquartersTōkai-mura1
  • Websitewww.jaea.go.jp
  • Legal formNational Research and Development Agency1

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Tokai-mura Japan Atomic Energy Agency Gate
Photo: Hiroshi Ishii, CC BY 2.0, via Wikimedia Commons4

The Japan Atomic Energy Agency is a Japanese atomic energy company. While it inherited the activities of both JNC and JAERI, it also inherited the nickname of JAERI, "Genken" 原研, an abbreviated word for "nuclear research".2

Corporate structure

Japan Atomic Energy Agency sits at the top of its group. 6 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Japan Atomic Energy Agency Tōkai-mura
    • Advanced Science Research Center Subsidiary · Japan
    • Horonobe Underground Research Center Subsidiary · Japan
    • J-PARC Subsidiary · Tōkai-mura, Japan
    • Nuclear Science Research Institute Subsidiary · Tōkai-mura, Japan
    • Tono Geoscience Center Subsidiary · Japan

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Products and brands

The following is an incomplete list of its activities, sorted by location:

Tokai-mura facilities

JAEA has several facilities located in Tōkai, Ibaraki Prefecture, which was the first center in Japan for nuclear research. Currently, JAEA has expanded to several other sites in the Ibaraki Prefecture as well as all of Japan.

Tokai R&D Center (東海研究開発センター)

Nuclear Science Research Institute (原子力科学研究所)

Read the full text

Nuclear Fuel Cycle Engineering Laboratories (核燃料サイクル工学研究所)

The Japan Proton Accelerator Research Complex (大強度陽子加速器計画 or J-PARC for short) houses many particle research facilities.

Tsuruga facilities

JAEA has another head base in Tsuruga, Fukui Prefecture. It is a fast breeder reactor center and a Research and Development (R&D) center.

Oarai R&D Center (大洗研究開発センター)

This center is located in Ōarai, Ibaraki Prefecture, close to, but not at the same site as Tokai-mura. It houses the Jōyō reactor, the Japan Materials Testing Reactor, the new High-temperature engineering test reactor, an environmental reactivity monitoring center, and a children's museum.

Ningyo-toge Environmental Engineering Center (人形峠環境技術センター)

This is a small uranium refining and conversion plant, as well as a small centrifuge enrichment demonstration plant located in Kamisaibara, Okayama Prefecture. The center deals with front-end issues of the nuclear fuel cycle.

Aomori R&D Center (青森研究開発センター)

The Aomori Research and Development Center is spread out over Rokkasho, Aomori Prefecture and Mutsu, Aomori Prefecture. The Rokkasho site does work with fusion research, notably a fusion reactor design research institute, a particle accelerator, and a materials irradiation test facility. The facilities in Mutsu include a museum, an ocean monitoring facility, and radioactive waste management.

JAEA also co-operates and provides support for the activities of Japan Nuclear Fuel Limited with their reprocessing facility and Uranium enrichment facility plans.

Horonobe Underground Research Center (幌延深地層研究センター)

The Horonobe URL carries out research and development on geoscientific study and on geological disposal for high-level radioactive waste. It is expected that this site will become Japan's national Deep geological repository for nuclear waste.

Fugen

Tono Geoscience Center (東濃地科学センター)

This is located in Tōnō, Gifu Prefecture.

From Wikipedia’s article on Japan Atomic Energy Agency, shared under CC BY-SA 4.0.3

Subsidiaries and ownership

Subsidiaries

  • Advanced Science Research Center
  • Horonobe Underground Research Center
  • J-PARC
  • Nuclear Science Research Institute
  • Tono Geoscience Center

From Wikidata.1

Acquisitions

  1. Oct 2005Acquired Tono Geoscience Center1
  2. Succeeded Japan Atomic Energy Research Institute1
  3. Succeeded Japan Nuclear Cycle Development Institute1

Timeline

  1. Oct 2005Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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