NRC ReviewAdvanced Non-LWR
Project website →Long Mott Energy Project (Dow)
📍 Seadrift, TX (Calhoun County Co.)Developer: Long Mott Energy (Dow Chemical subsidiary)Vendor / Tech: X-energy
Capacity
320 MW
Expected Operation
2030+
Reactor Type
Xe-100 (HTGR)
Regulatory Status
NRC construction permit application under review; environmental assessment with Finding of No Significant Impact issued 2026-05-18; NRC mandatory (uncontested) hearing held 2026-09-22 in Port Lavaca; contested hearing on a partly admitted contention from San Antonio Bay Estuarine Waterkeeper also pending; NRC said it expects to finish safety review later in 2026
Details
Primary Use
Industrial heat and power generation
Grid Connection
ERCOT
Fuel Type
HALEU / TRISO
Construction Start
2026
Research detail · verified 2026-10-10
Stage
Application under NRC review
Commercial power
Yes
NRC docket
50-614
Key dates
2025-03-31 CP application submitted; 2025-05-14 NRC accepted application for review; 2025-06-10 Federal Register hearing-opportunity notice; 2025-08-11 San Antonio Bay Estuarine Waterkeeper hearing request; 2025-08-14 Atomic Safety and Licensing Board established; 2026-01-22 Board admitted contention in part (LBP-26-01); 2026-05-18 NRC environmental assessment/FONSI completed; 2026-09-22 NRC uncontested hearing, Port Lavaca TX; 2026-11 target for final safety evaluation (per POWER)
Not verified / conflicts
No construction permit decision found as of 2026-10-10. NRC news release 26-054 places the site in 'Port Lavaca, Texas'; Dow and other sources say Seadrift; both are in Calhoun County. No developer-stated job numbers or college/union partnerships found. A reported April 2026 Fluor EPC contract appeared only in a search summary and was not opened. X-energy S-1 filings (sec.gov) say CP receipt was expected Q1 2027; not re-verified against the latest filing.
Sources
- https://www.federalregister.gov/documents/2025/06/10/2025-10505/long-mott-energy-llc-long-mott-generating-station-construction-permit-application
- https://www.energy.gov/ne/articles/nrc-dockets-construction-permit-application-dow-advanced-reactor-project
- https://www.federalregister.gov/documents/2025/08/19/2025-15706/long-mott-energy-llc-establishment-of-atomic-safety-and-licensing-board
- https://www.federalregister.gov/documents/2026/02/20/2026-03415/atomic-safety-and-licensing-board-panel-before-administrative-judges-stefan-r-wolfe-chair-dr-david-a
- https://www.nrc.gov/sites/default/files/cdn/doc-collection-news/2026/26-054.pdf
- https://www.federalregister.gov/documents/2026/05/20/2026-10073/long-mott-energy-llc-long-mott-generating-station-environmental-assessment-finding-of-no-significant
- https://www.federalregister.gov/documents/2026/08/20/2026-16975/long-mott-energy-llc-long-mott-generating-station-notice-of-hearing
- https://corporate.dow.com/en-us/news/press-releases/nrc-issues-environmental-assessment-with--finding-of-no-signific.html
- https://www.powermag.com/nrc-clears-long-motts-environmental-review-on-a-faster-path-another-milestone-for-commercial-advanced-nuclear/
About
Four-unit Xe-100 plant at Dow Seadrift, TX. First grid-scale advanced nuclear at an industrial site in North America.
Key Organizations
Developer
Long Mott Energy (Dow Chemical subsidiary)
EPC Contractor
Fluor Corporation
FEL-2 front-end engineering and definition services
Power Purchase Agreements1 PPA
Dow Chemical (industrial heat and power)
announcedPrivate Funding
Amazon ($500M Series C-1), Citadel (Ken Griffin), Ares Management, NGP, University of Michigan
Equity
—
announced
Federal Funding
DOE
DOE Funding ·
DOE ARDP; DOE authorized ~$30M for long-lead equipment procurement
—
awarded
State Policy Context
View nuclear-related legislation and energy stats for Texas