Ōma Nuclear Power Plant

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Ōma Nuclear Power Plant
Kernkraftwerk Ōma.jpg
Ōma Nuclear Power Plant (2019)
LocationŌma, Aomori
Coordinates41°30′35″N 140°54′37″E / 41.50972°N 140.91028°E / 41.50972; 140.91028Coordinates: 41°30′35″N 140°54′37″E / 41.50972°N 140.91028°E / 41.50972; 140.91028
StatusUnder construction
Construction beganMay 7, 2010 (2010-05-07)
Commission date2021 (planned)
Operator(s)Electric Power Development Company (J-Power)
Nuclear power station
Reactor typeABWR
Cooling sourceTsugaru Strait
Power generation
Units under const.1 x 1,383 MW
Nameplate capacity1,383 MW

The Ōma Nuclear Power Plant (大間原子力発電所, Ōma genshiryoku hatsudensho) is a nuclear plant under construction in Ōma, Aomori, Japan. It will be operated by the Electric Power Development Company (J-Power). The reactor would be unique for Japan in that it would be capable of using a 100% MOX fuel core, as requested by the 1995 decision by the Japanese Atomic Energy Commission. The fuel would utilize surplus plutonium by blending it with natural uranium, reducing the total radioactivity of nuclear waste and dramatically reducing the waste's lifetime.

In 2008, J-Power announced a 2.5-year delay to allow for additional work to make the plant resistant to a strong earthquake, making the operation start date in November 2014.[1][2] Following the Fukushima Daiichi nuclear disaster of March 2011 construction at Oma was suspended for 18 months. Work was resumed on October 2012. On March 2013, the main reactor building was at its full height.[3]

In December 2014 J-Power applied for safety checks at the Oma nuclear plant, slated for startup in 2021.[4]


  1. ^ Nakayama, Michio; Sato, Shigeru (November 11, 2008). "J-Power Delays Oma Nuclear Plant Start by 2½ Years (Update2)". Retrieved 2008-11-19.
  2. ^ "J-Power reschedules Ohma start-up". World Nuclear News. November 11, 2008. Retrieved 2008-11-19.
  3. ^ "Work resumes on Aomori's new Oma nuclear plant". The Washington Post. March 12, 2013. Retrieved 2014-02-04.
  4. ^ "J-Power forges ahead with Oma nuclear plant despite local tensions". The Japan Times. 2014-12-16. Archived from the original on 2017-03-04. Retrieved 2017-03-03.