{"docs":"https://nuclearnewsnetwork.com/tracker","unit":{"slug":"kudankulam-3","name":"Kudankulam-3","plant":"Kudankulam","unit":3,"country":"IN","region":"asia","reactor_type":"PWR","design":"VVER-1000","capacity_mw_net":917,"is_smr":false,"vendor":"Rosatom","owner_operator":"Nuclear Power Corporation of India (NPCIL)","status":"commissioning","construction_start":"2017-06-29","original_cod_target":2023,"current_cod_estimate":2027,"milestones":[{"date":"2017-06-29","event":"First concrete, Unit 3","source":"https://pris.iaea.org/pris/"},{"date":"2025-12-10","event":"First fuel batches delivered to site for Unit 3","source":"https://www.wionews.com/india-news/commissioning-of-kudankulam-unit-3-to-start-in-2026-rosatom-chief-1764940729347"},{"date":"2026-04-25","event":"'Spill to open reactor' commissioning milestone reached","source":"https://www.world-nuclear-news.org/articles/flushing-of-safety-systems-begins-for-kudankulam-unit-3"}],"sources":["https://pris.iaea.org/pris/"],"last_verified":"2026-07-10","verified":true,"confidence":"medium","notes":"Reactor-stage commissioning underway; plant director targets 2026 commissioning, commercial operation conservatively 2027. Units 4-6 need separate entries.","tags":["india","rosatom","vver","npcil"],"updated_at":"2026-07-10","slippage_years":4}}