{"docs":"https://www.nuclearnewsnetwork.com/tracker","terms":"History surfaces — append-only milestone logs, event/change feeds, and full JSON snapshots — are provided under the NNN Data License Terms (https://www.nuclearnewsnetwork.com/data-license): journalism, research, citation and AI answering are expressly permitted royalty-free with attribution; systematic bulk extraction, dataset redistribution, and embedding in commercial products or training corpora require a commercial license.","terms_url":"https://www.nuclearnewsnetwork.com/data-license","attribution":{"text":"Nuclear News Network, \"NNN Reactor Project Tracker\", https://www.nuclearnewsnetwork.com/tracker","url":"https://www.nuclearnewsnetwork.com/tracker"},"unit":{"slug":"ohma-1","name":"Ohma-1","plant":"Ohma","unit":1,"country":"JP","region":"asia","reactor_type":"BWR","design":"ABWR","capacity_mw_net":1325,"is_smr":false,"vendor":"Hitachi-GE","owner_operator":"J-Power","vendor_id":"org:hitachi-ge-nuclear-energy","owner_operator_ids":["org:j-power"],"design_id":"design:abwr","site_id":"site:ohma","status":"suspended","construction_start":2010,"original_cod_target":null,"current_cod_estimate":"FY2030-FY2031","milestones":[{"date":"2025-09","event":"WNISR 2025 (J-Power spokesperson): no construction work ongoing; safety improvement plan submission postponed to autumn 2026 (to Aomori Prefecture and Ohma Town), then final NRA approval; operation target FY2030","source":"https://www.worldnuclearreport.org/World-Nuclear-Industry-Status-Report-2025-HTML-version"},{"date":"2026-01-22","event":"NRA review of Ohma reactor installation change (filed 2014-12-16) still 'In review', per JANSI licensing-status chart","source":"https://www.genanshin.jp/english/facility/map/"},{"date":"2026-04-24","event":"Renewable Energy Institute column citing J-POWER: Ohma (1,383 MW) could be operational in FY2031 given commissioning-works and safety-review progress","source":"https://www.renewable-ei.org/en/activities/column/REupdate/20260424.php"},{"date":"2026-06-16","event":"Listed as under construction in the WNA world table","source":"https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide"}],"sources":["https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide","https://pris.iaea.org/pris/","https://www.worldnuclearreport.org/World-Nuclear-Industry-Status-Report-2025-HTML-version","https://www.genanshin.jp/english/facility/map/","https://www.renewable-ei.org/en/activities/column/REupdate/20260424.php","https://www.jaif.or.jp/cms_admin/wp-content/uploads/2026/07/jp-npps-operation20260708_en.pdf"],"last_verified":"2026-09-15","verified":true,"confidence":"medium","notes":"Construction paused post-Fukushima; full-MOX ABWR. No restart of construction; WNA/PRIS/WNISR all list as suspended or under-construction-without-date (JAIF 2026-07: 'Under Construction, TBD'). J-Power COD signal drifted FY2030 (WNISR 2025) to FY2031 (REI, Apr 2026). Key gate: safety improvement plan submission autumn 2026, then NRA approval of the 2014 installation-change filing (still 'In review' Jan 2026); full-MOX fuel supply partly covered by Orano contract.","tags":["jp","abwr"],"updated_at":"2026-09-15","slippage_years":null}}