Tomari nuclear power plant

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Tomari nuclear power plant is a mothballed nuclear power plant in Furuu County, Japan.

Project Details

Table 1: Unit-level project details for Tomari nuclear power plant

Unit name	Status	Commissioning year	Nameplate capacity	Reactor type	Model	Owner	Operator
1	Mothballed	1989	579 MW	Pressurized water reactor	M (2-loop)	Hokkaido Electric Power CO INC [100%]	Hokkaido Electric Power CO INC
2	Mothballed	1991	579 MW	Pressurized water reactor	M (2-loop)	Hokkaido Electric Power CO INC [100%]	Hokkaido Electric Power CO INC
3	Mothballed	2009	912 MW	Pressurized water reactor	M (3-loop)	Hokkaido Electric Power CO INC [100%]	Hokkaido Electric Power CO INC

Table 2: Additional unit-level timeline details for Tomari nuclear power plant

Unit name	Construction start	First criticality (more info)	First grid connection	Commercial operation
1	April 18, 1985	November 16, 1988	December 6, 1988	June 22, 1989
2	June 13, 1985	July 25, 1990	August 27, 1990	April 12, 1991
3	November 18, 2004	March 3, 2009	March 20, 2009	December 22, 2009

Table 3: Additional unit-level capacity details for Tomari nuclear power plant

(Read more about nuclear capacity definitions.)

Unit name	Reference net capacity	Design net capacity	Thermal capacity
1	550 MW	550 MW	1650 MWt
2	550 MW	550 MW	1650 MWt
3	866 MW	866 MW	2660 MWt

Location

Table 4: Unit-level location details for Tomari nuclear power plant

Unit name	Location	Coordinates (WGS 84)
1	Furuu County, Japan	43.0367, 140.5125 (exact)
2	Furuu County, Japan	43.0367, 140.5125 (exact)
3	Furuu County, Japan	43.0367, 140.5125 (exact)

The map below shows the exact location of the nuclear power plant:

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Background

All three units of the Tomari nuclear power plant suspended operation as part of the nationwide response to the 2011 Fukushima nuclear disaster. The Nuclear & Industrial Safety Agency (NISA) finished reviewing a stage 1 assessment of Units 1 and 2 by September 2012, before regulatory authority changed to the the Nuclear Regulation Authority (NRA). Hokkaido submitted an application to restart in July 2013, and as of April 2024, that application is still under review. In 2014, Hokkaido completed construction of a seawall at the site of the plant.

Articles and Resources

Additional data

To access additional data, including an interactive map of global nuclear power plants, a downloadable dataset, and summary data, please visit the Global Nuclear Power Tracker on the Global Energy Monitor website.