About Us

Message from the CEO


Hidenari Yamatoya

President and CEO
Hidenari Yamatoya

Since its foundation, we at Mitsubishi Nuclear Fuel have strived to provide stable nuclear energy to the people of Japan, while gaining the understanding of local communities in this region of Tokai, always recognizing that safety and security are paramount, and upholding “Contribute to people, societies and the global environment through nuclear fuel business activities” as our corporate mission.
The nuclear fuel that we manufacture plays an important role in supporting the “nuclear power of the future,” which is positioned as semi-domestic energy, in order to realize a decarbonized society and provide a stable supply of energy.
For this reason, we cleared new regulatory requirements to ensure safety, and in March 2023 we were reborn as a specialist company producing reliable and high-performance nuclear fuels.
Furthermore, while maintaining a global perspective, we will continue to work tirelessly to improve and develop technologies based on the technological capabilities and brand power we have cultivated over 50 years to meet your expectations.

Corporate Profile

Corporate Name Mitsubishi Nuclear Fuel (MNF)
Business Description
  • Manufacture and Transportation of Nuclear Fuel(PWR)
  • Manufacturing of related products
  • Services related to Nuclear fuel
Capital Stock One Billion yen
Shareholders Mitsubishi Heavy Industries, Ltd.
Establishment of corporation December, 1971

Corporate History

1954 Uranium ore sorting test at Mitsubishi Metal (MMC) Nuclear Fuel Laboratory in Ohmiya
1959 R&D of nuclear fuel at Mitsubishi Atomic Power Industry (MAPI) Research Institute in Ohmiya
1960 Nuclear fuel conversion / fabrication development and testing at MMC / MAPI Research Institute in Ohmiya
1961 Acquisition of land for a nuclear fuel plant in Tokai-mura
1971, Dec. Foundation of Mitsubishi Nuclear Fuel Co., Ltd. (MNF)
1972, Jan. Acquisition of a license for nuclear fuel fabrication (MNF Tokai Plant)
1996, Dec. Acquisition of ISO 9002 certification
2013, Mar. Manufacture of the 20,000 PWR fuel assembly
2021, Jun. Obtained Design and Construction Permit for New Regulatory Requirements
2022, Aug Receivied certification of Pre-use Inspection
2023, Mar. Reorganization of MHI group's nuclear fuel business

Corporate Principles and Business Policy

MNF Corporate Principles

Through our participation in the nuclear fuel industry we provide a beneficial contribution to people, society and the global environment, while always recognizing that safety is our utmost priority.

MNF Business Policy

To become an nuclear fuel fabricator which is recognized throughout the world, we shall strive for the following objectives:
  • Contribute to the stable supply of energy through the supply of high-quality, highly-efficient nuclear fuel.
  • Contribute to the growth of nuclear power through our efforts on a global scale.
  • Contribute to the nuclear fuel cycle through our participation in a wide array of activities from Uranium supply to MOX fuel fabrication.

Affiliate Companies

    MNF SERVICES Company, Limited(MNFS)
    1002-8, Mukoyama, Naka-shi, Ibaraki, 311-0102

Location list

Head Office/Tokai Plant

Address: 622-1, Funaishikawa, Tokai-mura, Naka-gun, Ibaraki, 319-1197
Phone: +81-29-282-2011
FAX: +81-29-287-8885

Okegawa Plant

Address: Inside Okegawa Plant of Proterial, Ltd., 1230 Kamihideya, Okegawa-shi, Saitama 363-0026