This power plant is operated by the Japan Atomic Power Company and is located in Tsuruga City.
The No. 1 Unit in the Tsuruga Nuclear Power Plant was Japan’s first boiling water reactor for commercial use.
The No. 2 Unit in the Tsuruga Nuclear Power Plant was the first pressurized water reactor in Japan to adopt a prestressed concrete containment vessel.

　　- No. 1 Unit (Boiling Water Reactor) Electrical Output: 357,000 kW
　　　　March 14, 1970: Start of Operation
　　　　April 27, 2015: End of Operation
　　　　April 19, 2017: Approval of the Decommissioning Plan
　　- No. 2 Unit (Pressurized Water Reactor) Electrical Output: 1,160,000 kW
　　　　February 17, 1987: Start of Operation

Japan Atomic Power Company - Tsuruga Nuclear Power Plant (External Link)

This power plant is operated by the Kansai Electric Power Company and is located in the town of Mihama.
The No. 1 Unit in the Mihama Power Plant was Japan’s first pressurized water reactor for commercial use. The power plant is known for transmitting “Nuclear Light” to the venue of the 1970 World Exposition in Osaka.

　　- No. 1 Unit (Pressurized Water Reactor) Electrical Output: 340,000 kW
　　　　November 28, 1970: Start of Operation
　　　　April 27, 2015: End of Operation
　　　　April 19, 2017: Approval of the Decommissioning Plan
　　- No. 2 Unit (Pressurized Water Reactor) Electrical Output: 500,000 kW
　　　　July 25, 1972: Start of Operation
　　　　April 27, 2015: End of Operation
　　　　April 19, 2017: Approval of the Decommissioning Plan
　　- No. 3 Unit (Pressurized Water Reactor) Electrical Output: 826,000 kW
　　　　December 1, 1976: Start of Operation

Kansai Electric Power Company - Mihama Nuclear Power Plant (External Link)

This power plant is operated by the Kansai Electric Power Company and is located in the town of Ooi.
The Ooi Power Plant’s No. 1 and No. 2 Units represent Japan’s first 4-loop plant consisting of four steam generators.
The No. 3 and No. 4 Units in the Ooi Power Plant provide Japan’s largest electrical output at 1.18 million kW with pressurized water reactors, which use prestressed concrete containment vessels.

　　- No. 1 Unit (Pressurized Water Reactor) Electrical Output: 1,175,000 kW
　　　　March 27, 1979: Start of Operation
　　- No. 2 Unit (Pressurized Water Reactor) Electrical Output: 1,175,000 kW
　　　　December 5, 1979: Start of Operation
　　- No. 3 Unit (Pressurized Water Reactor) Electrical Output: 1,180,000 kW
　　　　December 18, 1991: Start of Operation
　　- No. 4 Unit (Pressurized Water Reactor) Electrical Output: 1,180,000 kW
　　　　February 2, 1993: Start of Operation

Kansai Electric Power Company - Ooi Nuclear Power Plant (External Link)

This power plant is operated by the Kansai Electric Power Company and is located in the town of Takahama.
The Takahama Power Plant’s No. 1 and No. 2 Units represent Japan’s first 3-loop plant consisting of three steam generators.
Japan’s first public hearing was held when the No. 3 and No. 4 Units were added to the Takahama Power Plant.

　　- No. 1 Unit (Pressurized Water Reactor) Electrical Output: 826,000 kW
　　　　November 14, 1974: Start of Operation
　　- No. 2 Unit (Pressurized Water Reactor) Electrical Output: 826,000 kW
　　　　November 14, 1975: Start of Operation
　　- No. 3 Unit (Pressurized Water Reactor) Electrical Output: 870,000 kW
　　　　January 17, 1985: Start of Operation
　　- No. 4 Unit (Pressurized Water Reactor) Electrical Output: 870,000 kW
　　　　June 5, 1985: Start of Operation

Kansai Electric Power Company - Takahama Nuclear Power Plant (External Link)

This nuclear reactor is operated by the Japan Atomic Energy Agency and is located in Tsuruga City.
Monju is a fast breeder research facility that breeds plutonium (fuel) by bombarding non-fissionable uranium-238 with fast neutrons while it generates electricity.
Monju uses plutonium and uranium mixed oxide (MOX) as its fuel, and it is cooled by liquid sodium, which has extremely high levels of thermal conductivity that make it difficult for the neutrons generated during fission to decelerate.

　　- Monju (Fast Breeder Reactor) Electrical Output: 280,000 kW
　　　　October 25, 1985: Start of Construction
　　　　April 5, 1994: First State of Criticality
　　　　August 29, 1995: First Power Transmission
　　　　December 8, 1995: Sodium Leakage from the Piping of the Secondary Cooling System
　　　　May 6, 2010: Resumption of Performance Testing
　　　　December 6, 2017: Approval of the Decommissioning Plan

Japan Atomic Energy Agency - Monju Fast Breeder Reactor (External Link)

This research facility is operated by the Japan Atomic Energy Agency and is located in Tsuruga City.
Fugen was an advanced thermal reactor capable of using plutonium recovered from spent fuel and that used heavy water as a moderator. It was developed solely by Japan. Although the number of times it was loaded with plutonium-uranium mixed-oxide fuel (MOX) scored a world record, research was terminated into its feasibility as a nuclear reactor, and operations ceased in March 2003.
The FUGEN Decommissioning Engineering Center was reorganized for the idle Fugen Power Plant in February 2008, and since then it has been carrying out research and development covering all aspects of the decommissioning process while dismantling and removing the nuclear facilities, as well as developing technology for dismantling the reactors, running tests for verifying the safety of decommissioning work, and carrying out research for aging management.

- Fugen (Advanced Thermal Reactor) Electrical Output: 165,000 kW
　　　　March 20, 1979: Start of Operation
　　　　March 29, 2003: End of Operation
　　　　February 12, 2008: Approval of the Decommissioning Plan
　　　　　　　　　　　　　　Reorganization of the FUGEN Decommissioning Engineering Center

Japan Atomic Energy Agency - FUGEN Decommissioning Engineering Center (External Link)