General Matter walks NRC through Paducah enrichment license filing

General Matter, Inc. will walk U.S. Nuclear Regulatory Commission (NRC) staff through its license application for the General Matter Paducah Enrichment Facility in closed sessions on October 14 and 15, 2026. The meetings feed NRC's acceptance review of a request for a 40-year license to enrich uranium at the former Paducah Gaseous Diffusion Plant in Kentucky.

Key facts

• General Matter dated its initial license application September 27, 2026, under Docket 70-7040, the docket already used for its pre-application correspondence, seeking a 40-year license under 10 CFR Parts 40 and 70.
• The plant would sit on about 107 acres of DOE land, with two production halls of roughly 650,000 and 490,000 square feet.
• The environmental report describes output of LEU up to 5% and HALEU up to 20% U-235, with capacity of "several million" separative work units.
• The NRC walkthrough runs 9:00 a.m. to 4:30 p.m. on October 14 and again on October 15, both closed.
• DOE announced a $900 million HALEU enrichment task order for General Matter in January 2026.

What happened

The NRC's meeting notice, posted October 8, says the purpose is "for General Matter to walk NRC staff through the General Matter Paducah Enrichment Facility license application and supporting documents for acceptance review." Day one, at One White Flint North in Rockville, Maryland, covers License Application Chapters 1–13, the Integrated Safety Analysis Summary, the Fire Hazards Analysis and the Emergency Plan. Day two covers the Fundamental Nuclear Materials Control Plan, Decommissioning Funding Plan, security plans and the Environmental Report, with the Physical Security Plan in a separate Safeguards Information session. Staff from the NRC's Office of Nuclear Material Safety and Safeguards and Office of Nuclear Reactor Regulation are listed as participants.

The meetings are closed under 10 CFR 2.390(d)(1), which covers an applicant's physical protection and material control and accounting records for special nuclear material.

The filing behind the meetings is General Matter's cover letter GEM-LIC-2026-040, added to NRC's ADAMS document system on October 5. It transmits 13 enclosures plus a withholding affidavit. The letter asks for authority to enrich uranium as uranium hexafluoride (UF6) on land leased from the Department of Energy (DOE) in McCracken County. It would cap inventory at Category III, special nuclear material of low strategic significance, and bar a formula quantity of strategic material. On that basis General Matter says a Safeguards Contingency Plan is not required. The company also asks for an accelerated review, citing its pre-licensing engagement and "close adherence to NUREG-1520."

General Matter announced the filing on September 28. It describes an application of more than 1,000 pages backed by more than 100 engagements with NRC staff.

Why it matters

The filing puts one of DOE's flagship fuel bets in front of the regulator. General Matter holds one of DOE's two $900 million HALEU enrichment task orders. USAspending records the order as award 89243226FNE400213, with a base obligation date of March 4, 2026 and a period of performance running to March 14, 2036. Its stated purpose is to "establish new annual domestic commercial" HALEU capacity and produce HALEU UF6 for purchase by DOE.

There is a gap between the paperwork and the HALEU headline, though. The environmental report analyzes a plant that can produce both LEU and HALEU. General Matter's own post, however, says this first application is a core license and that "next year, we intend to submit an amendment to produce High-Assay Low-Enriched Uranium." The company says the two-step route lets it begin construction sooner. The Category III cap in the cover letter fits that sequencing.

Paducah now hosts two private enrichment projects. The environmental report notes that Global Laser Enrichment owns about 691 acres just south of General Matter's parcel for its planned Paducah Laser Enrichment Facility. That project's output is already committed to Cameco under an exclusive offtake. Orano's Oak Ridge project is a step further along, with an NRC hearing window and a 12-month review target. That sets a benchmark General Matter's accelerated-review request will be measured against.

Background

General Matter's NRC engagement began with a letter of intent dated December 6, 2024. The company announced its Paducah lease with DOE on August 5, 2025, describing a "multi-decade, one hundred-acre lease" at the gaseous diffusion site, which enriched uranium from 1952 until 2013.

Through 2026 the company used NRC correspondence to start site work before any license. In a February 27 letter, the NRC agreed that concepts from SECY-25-0074 can apply to fuel facilities: work on systems that will not be items relied on for safety can fall outside "construction" under 10 CFR 70.4. Staff later said soil improvement (April 10) appears to fall within pre-construction, and agreed that utilities installation (September 10) is pre-construction. Both letters stress that they are not safety evaluations. On September 25, General Matter asked for a specific exemption under 10 CFR 70.17 to do limited foundation work before licensing, and asked the NRC to act by November 6, 2026.

The environmental report puts construction at two years, with a workforce of about 600, and operations at about 140 employees. For how this plant fits the wider fuel picture, see NNN's HALEU explainer and U.S. nuclear fuel supply chain guide. For the parallel HALEU award, see Centrus's $900 million task order. For centrifuge expansion in New Mexico, see Urenco's 2.1 million SWU project. NNSA's separate defense enrichment effort is covered in our report on BWXT's DUECE pilot plant.

USAspending also shows a smaller, older award. On September 24, an administrative modification to General Matter's April 2025 LEU enrichment IDIQ task order, for a report on deploying new enrichment capacity, reduced its obligation from $500,000 to $395,254.90.

What's next

The walkthrough is an input to acceptance review, not a licensing decision, and the NRC has not yet said whether it will accept the application for docketing. Once the NRC dockets an application, it typically publishes a Federal Register notice with a hearing opportunity, as it did for Orano. As of October 11, no Federal Register notice on General Matter's application had been published. The dates to watch are the NRC's docketing decision, any response to the requested accelerated schedule, and action on the foundation-work exemption, which General Matter asked for by November 6. The company's tentative milestones put license issuance in 2027, commissioning of Production Hall A in 2028 and Production Hall B in 2029.

Also on the NRC's calendar on October 14: a partially closed pre-application meeting with Oklo on the reliability and integrity management program for its Aurora powerhouse.