Onagawa nuclear power plant
| Part of the Global Nuclear Power Tracker, a Global Energy Monitor project. |
Onagawa nuclear power plant is an operating nuclear power plant in Oshika County, Miyagi, Japan.
Project Details
Table 1: Unit-level project details for Onagawa nuclear power plant
| Unit name | Status | Commissioning year | Retirement year | Nameplate capacity | Reactor type | Model | Owner | Operator |
|---|---|---|---|---|---|---|---|---|
| 1 | Retired[1] | 1984[1] | 2018[1] | 524 MW[1] | Boiling water reactor[1] | BWR-4[1] | Tohoku Electric Power Co Inc [100%] (東北電力株式会社)[1] | Tohoku Electric Power (東北電力株式会社)[1] |
| 2 | Operating[2] | 2024[2][3] | – | 825 MW[3] | Boiling water reactor[3] | BWR-5[3] | Tohoku Electric Power Co Inc [100%] (東北電力株式会社)[3] | Tohoku Electric Power (東北電力株式会社)[3] |
| 3 | Mothballed[4] | 2002[4] | – | 825 MW[4] | Boiling water reactor[4] | BWR-5[4] | Tohoku Electric Power Co Inc [100%] (東北電力株式会社)[4] | Tohoku Electric Power (東北電力株式会社)[4] |
Table 2: Additional unit-level timeline details for Onagawa nuclear power plant
| Unit name | Construction start | First criticality (more info) | First grid connection | Commercial operation | Retirement date |
|---|---|---|---|---|---|
| 1 | July 8, 1980[1] | October 18, 1983[1] | November 18, 1983[1] | June 1, 1984[1] | December 21, 2018[1] |
| 2 | April 12, 1991[3] | November 2, 1994[3] | December 23, 1994[3] | 2024[2][3] | – |
| 3 | January 23, 1998[4] | April 26, 2001[4] | May 30, 2001[4] | January 30, 2002[4] | – |
Table 3: Additional unit-level capacity details for Onagawa nuclear power plant
(Read more about nuclear capacity definitions.)
| Unit name | Reference net capacity | Design net capacity | Thermal capacity |
|---|---|---|---|
| 1 | 498 MW[1] | 498 MW[1] | 1593 MWt[1] |
| 2 | 796 MW[3] | 796 MW[3] | 2436 MWt[3] |
| 3 | 796 MW[4] | 796 MW[4] | 2436 MWt[4] |
Location
Table 4: Unit-level location details for Onagawa nuclear power plant
| Unit name | Location | Coordinates (WGS 84) |
|---|---|---|
| 1 | Oshika County, Miyagi, Japan[5] | 38.3987, 141.5003 (exact) |
| 2 | Oshika County, Miyagi, Japan[5] | 38.3987, 141.5003 (exact) |
| 3 | Oshika County, Miyagi, Japan[5] | 38.3987, 141.5003 (exact) |
The map below shows the exact location of the nuclear power plant:
Background
In 2018, Tohoku announced that they would decommission rather than upgrade Unit 1 of the Onagawa nuclear plant.[6] Units 2 and 3 were shut down in 2011 due to the Fukushima disaster. Tohoku planned to restart Unit 2 by September 2024, but the process faced delays on account of additional safety construction works. Unit 2 was restarted in October 2024, becoming the first nuclear plant to reopen in the Eastern region since the 2011 shutdown.[7]
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.
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 https://web.archive.org/web/20220412000305/https://pris.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=347. Archived from the original on 2022-04-12.
{{cite web}}: Missing or empty|title=(help) - ↑ 2.0 2.1 2.2 https://www.world-nuclear-news.org/articles/first-bwr-restarts-in-japan.
{{cite web}}: Missing or empty|title=(help) - ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 https://web.archive.org/web/20220827170639/https://pris.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=382. Archived from the original on 2022-08-27.
{{cite web}}: Missing or empty|title=(help) - ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 https://web.archive.org/web/20220827170627/https://pris.iaea.org/PRIS/CountryStatistics/ReactorDetails.aspx?current=385. Archived from the original on 2022-08-27.
{{cite web}}: Missing or empty|title=(help) - ↑ 5.0 5.1 5.2 https://goo.gl/maps/sYmHY2tezHpBrt9U7.
{{cite web}}: Missing or empty|title=(help) - ↑ "Nuclear Power in Japan - World Nuclear Association". world-nuclear.org. Retrieved 2024-05-23.
- ↑ "Nuclear Power in Japan - World Nuclear Association". world-nuclear.org. Retrieved 2026-07-02.
