{"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":"long-mott-3","name":"Long Mott Generating Station Unit 3","plant":"Long Mott Generating Station (Seadrift, TX)","unit":3,"country":"US","region":"north-america","reactor_type":"HTGR","design":"Xe-100","capacity_mw_net":80,"is_smr":true,"vendor":"X-energy","owner_operator":"Long Mott Energy (Dow)","vendor_id":"org:x-energy","owner_operator_ids":["org:long-mott-energy"],"design_id":"design:xe-100","site_id":"site:long-mott","status":"planned","construction_start":null,"original_cod_target":null,"current_cod_estimate":null,"milestones":[{"date":"2025-03-31","event":"Long Mott Energy, a wholly-owned Dow subsidiary, filed a construction permit application with the NRC for a four-module Xe-100 plant (320 MWe) at Seadrift, Texas","source":"https://www.nrc.gov/reactors/new-reactors/advanced/who-were-working-with/applicant-projects/long-mott","entities":["org:long-mott-energy","org:nrc"]},{"date":"2025-05-12","event":"NRC completed its acceptance review and docketed the construction permit application","source":"https://www.nrc.gov/reactors/new-reactors/advanced/who-were-working-with/applicant-projects/long-mott","entities":["org:nrc"]},{"date":"2026-05-18","event":"NRC issued the environmental assessment and finding of no significant impact for the project, ahead of schedule","source":"https://x-energy.com/news/nrc-issues-environmental-assessment-with-finding-of-no-significant-impact-for-dow-and-x-energys-propsed-advanced-nuclear-project-in-texas/","entities":["org:nrc"]}],"sources":["https://www.nrc.gov/reactors/new-reactors/advanced/who-were-working-with/applicant-projects/long-mott","https://www.ans.org/news/2026-02-20/article-7771/nrc-board-to-hear-challenges-to-dows-long-mott-application/","https://x-energy.com/news/nrc-issues-environmental-assessment-with-finding-of-no-significant-impact-for-dow-and-x-energys-propsed-advanced-nuclear-project-in-texas/","https://x-energy.com/media/news-releases/nrc-publishes-18-month-review-schedule-for-xe-100-construction-permit-application"],"last_verified":"2026-10-12","verified":true,"confidence":"high","notes":"One of four Xe-100 modules (80 MWe each, per the NRC) planned to supply electricity and process steam to Dow's Seadrift Operations, with DOE Advanced Reactor Demonstration Program support. The NRC construction permit decision is pending: the NRC project page (updated 2026-09-14) targets the final safety evaluation for November 2026 and lists the hearing and permit decision as not yet scheduled. A licensing board admitted the San Antonio Bay Estuarine Waterkeeper as intervenor in January 2026. No construction start or in-service date has been announced.","tags":["us","smr","advanced-reactor","xe-100","x-energy"],"updated_at":"2026-10-12","slippage_years":null}}