General Matter

Table of Contents

⚠ Disclaimer: This entry may be incomplete, out of date, or inaccurate. It is AI-maintained on a best-effort basis. Do not rely on it as a sole source — verify claims independently using the sources listed below.

Summary

General Matter is a Los Angeles uranium enrichment startup founded by CEO Scott Nolan, a former SpaceX propulsion engineer and Founders Fund partner, and COO Lee Robinson. The company was incubated inside Founders Fund for roughly a year before emerging from stealth in April 2025 with a $50 million Series A led by Founders Fund and Peter Thiel joining the board. Unlike the reactor developers elsewhere in this section, General Matter sits at the fuel-supply layer: it aims to build a domestic enrichment capability spanning LEU, LEU+, and HALEU (5–20% U-235), directly targeting the gap left by Centrus Energy's position as the only currently NRC-licensed US HALEU enricher. In January 2026 the company won a $900 million, 10-year DOE IDIQ contract to build enrichment capacity at the former Paducah Gaseous Diffusion Plant in Kentucky (~$1.5 billion total investment, ~140 jobs), and in February 2026 signed a separate DOE lease to explore reactivating the long-dormant Fuels and Materials Examination Facility (FMEF) at the Hanford Site in Washington. General Matter was one of DOE’s first four Nuclear Energy Launch Pad selections in April 2026 — the only fuel-focused company among Deployable Energy, NuCube Energy, and Radiant Industries.

Key Facts

Founded: ~2024 (incubated within Founders Fund roughly one year before its April 2025 public launch)
HQ: Los Angeles, CA (per World Nuclear News; some corporate filings list San Francisco, CA — unresolved discrepancy, see Claim Verification)
Type: Private
CEO & Co-Founder: Scott Nolan
COO & Co-Founder: Lee Robinson
Board: Peter Thiel (joined April 2025, following Founders Fund’s Series A)
Series A: ~$50 million, led by Founders Fund (April 2025)
Technology: Uranium enrichment — converts uranium hexafluoride (UF6) to LEU (3–5%), LEU+ (5–10%), and HALEU (10–20%) U-235 concentration; specific enrichment method (e.g., centrifuge cascade design) undisclosed and treated as proprietary
DOE contract: $900 million, 10-year Indefinite Delivery/Indefinite Quantity (IDIQ), milestone-based, awarded January 7, 2026, to build and operate HALEU enrichment capacity
Primary facility: Former Paducah Gaseous Diffusion Plant, Paducah, KY — 100-acre parcel; ~$1.5 billion total investment; ~140 full-time jobs; construction targeted to begin 2026; operations targeted late 2020s through full capacity by 2034
Secondary facility: Fuels and Materials Examination Facility (FMEF), Hanford Site, WA — 190,000 sq ft facility built 1984 for liquid fast breeder reactor support, dormant/in surveillance-maintenance since 1993, never operated in a nuclear capacity; DOE Office of Environmental Management lease signed February 4, 2026 for site characterization and feasibility assessment
NRC status: Letter of Intent for HALEU production/handling licensing submitted December 6, 2024, under 10 CFR Part 70; no docket/project number publicly confirmed as of the December 2024 letter (company requested NRC assign one); full license application with safety and environmental analyses still forthcoming as of last review
DOE Nuclear Energy Launch Pad: Selected April 27–28, 2026 as one of the program’s first four companies (with Deployable Energy, NuCube Energy, Radiant Industries)
Team: ~2 dozen employees as of April 2025 stealth exit, drawn from SpaceX, Tesla, Anduril, national laboratories, and the Department of Defense

What It Is / How It Works

Filling a domestic HALEU gap: General Matter’s founding thesis, per CEO Scott Nolan, is that no credible American commercial enrichment company existed to fill the emerging HALEU demand from advanced reactor developers — a gap he searched for an investment target to fill during his time at Founders Fund before deciding to found the company instead. This directly addresses the single most-cited supply chain risk across this research section’s nuclear entries: Centrus Energy is currently the only NRC-licensed US HALEU enricher, and Russia’s TENEX/Rosatom (the prior primary Western HALEU source) is now sanctioned. General Matter’s stated aim is to become a second domestic entrant across the full LEU-to-HALEU enrichment range, not just HALEU alone.

Undisclosed enrichment technology: General Matter has not publicly disclosed the specific enrichment technology or process it uses (centrifuge cascade design being the presumed but unconfirmed approach, consistent with all current US and allied enrichment capacity). Information submitted to the NRC is treated as proprietary. This opacity makes independent technical evaluation of the company’s claims difficult — it is not yet possible to assess technology readiness level from public sources.

Two-site strategy: General Matter is pursuing capacity at two distinct DOE legacy nuclear sites simultaneously. Paducah is the primary, funded buildout (backed by the $900M DOE IDIQ) and is a former uranium enrichment site itself (gaseous diffusion, decommissioned), giving it existing site infrastructure, characterization data, and community familiarity with enrichment operations. Hanford’s FMEF lease is comparatively exploratory — a site-characterization and feasibility phase for a facility that has never operated, originally built for an entirely different mission (liquid fast breeder reactor fuel/materials support) that was cancelled before startup.

Regulatory pathway distinct from reactor developers: Unlike the reactor companies elsewhere in this section, General Matter’s core regulatory hurdle is an NRC Part 70 special nuclear material license for enrichment, handling, storage, and transportation of HALEU — a different licensing track than the Construction Permit/Combined License process reactor developers pursue. As of the company’s December 2024 Letter of Intent, this process was still in its earliest stage (pre-docketing); the company had not yet publicly confirmed docket assignment or filed the detailed license application with safety and environmental analyses.

Notable Developments

2026-04-27/28: Selected as one of DOE’s first four Nuclear Energy Launch Pad companies, alongside Deployable Energy, NuCube Energy, and Radiant Industries — the only fuel-focused selection.
2026-02-04: DOE Office of Environmental Management signs lease with General Matter to explore reactivating the Fuels and Materials Examination Facility (FMEF) at the Hanford Site, WA, for advanced nuclear fuel cycle technologies. (ANS Nuclear Newswire)
2026-01-07: Awarded $900 million, 10-year DOE IDIQ contract to build and operate domestic HALEU enrichment capacity at the former Paducah Gaseous Diffusion Plant, KY (~$1.5B total investment, ~140 jobs). (PR Newswire)
2025-08: Signs lease for 100-acre parcel at the former Paducah Gaseous Diffusion Plant.
2025-04: Emerges from stealth after ~1 year incubated within Founders Fund; announces ~$50M Series A led by Founders Fund; Peter Thiel joins board. (World Nuclear News)
2024-12-06: Submits Letter of Intent to the NRC for HALEU production/handling licensing under 10 CFR Part 70. (NRC)
~2024: Founded by Scott Nolan and Lee Robinson.

Key People

Scott Nolan — CEO & Co-Founder

LinkedIn: not found
Background: Former SpaceX engineer, worked on Merlin engine systems and Dragon capsule development; subsequently a partner at Founders Fund, where he spent over a year searching for a domestic enrichment company to invest in before founding General Matter instead
Notes: Nolan’s Founders Fund background directly ties General Matter to that firm as both incubator and lead Series A investor

Lee Robinson — COO & Co-Founder

LinkedIn: linkedin.com/in/lee-robinson-cfa
Background: Background in intelligence and defense innovation; public contact records associate him with prior defense-sector affiliations

Peter Thiel — Board Member

LinkedIn: Public figure; well known
Role: Joined General Matter’s board in April 2025 following Founders Fund’s Series A investment
Background: Co-founder of Founders Fund, PayPal, Palantir
Notes: ⚑ Shared background / cross-entity overlap: Founders Fund is also a named investor in Radiant Industries’s Series B, C, and D rounds — the same venture firm backs both a fuel-supply company and a reactor developer documented in this section, a meaningful concentration of one investor’s exposure across the DOE Nuclear Energy Launch Pad cohort.

People — Last Reviewed: 2026-08-18

Supply Chain Position

General Matter sits at the fuel enrichment (upstream) layer that every HALEU-dependent reactor developer in this section — Oklo, X-energy, Kairos Power — currently depends on Centrus Energy alone to supply.

Layer	Detail
Feedstock	Natural/depleted uranium hexafluoride (UF6) — sourcing pipeline not disclosed
Enrichment technology	Undisclosed; proprietary; presumed centrifuge-based (unconfirmed)
Primary facility	Former Paducah Gaseous Diffusion Plant, KY — legacy DOE enrichment site; $900M DOE IDIQ-funded buildout
Secondary facility	Hanford FMEF, WA — exploratory lease, feasibility/characterization phase only
Regulatory pathway	NRC 10 CFR Part 70 special nuclear material license; Letter of Intent filed Dec 2024; full application status not yet public
Downstream customers (potential)	Not yet publicly named; General Matter’s DOE contract targets US commercial and government nuclear fuel demand broadly, which would include HALEU-dependent developers documented elsewhere in this section (Oklo, X-energy, Kairos Power) if and when General Matter reaches commercial output

⚑ Second domestic HALEU entrant, unproven: This entry’s existence means the “Centrus is the only NRC-licensed US HALEU enricher” statement used elsewhere in this section’s supply chain notes needs a caveat: General Matter is pursuing a second domestic enrichment license, but as of last review had not been granted an NRC license, had not begun construction at Paducah, and had not shipped any enriched product. Track NRC docket assignment and Part 70 license issuance as the key milestone before treating General Matter as an operational supply chain participant.

Claim Verification

Claim: $900M DOE contract will “supply a significant portion of the nation’s advanced nuclear fuel needs”

Status: Unverified as delivered supply; contract is a funding vehicle, not proof of production capability

Supporting: The contract is real and confirmed via DOE and PR Newswire; it is milestone-based, meaning payment is tied to demonstrated progress rather than paid upfront in full

Refuting / questioning: An IDIQ contract sets a ceiling and funding mechanism, not a guarantee of technical success; General Matter has not disclosed its enrichment technology, has no operating enrichment facility, and has not received an NRC license as of last review — the entire $900M program depends on technology and licensing risks that are unproven in public sources

Summary: The contract and site lease are real, verifiable commitments of federal funding and DOE facility access. Whether General Matter can actually build and license a working enrichment cascade — the hardest part of the enrichment business historically — is entirely unverified as of this review.

Claim: Enrichment operations targeted for “late 2020s” with full capacity by 2034

Status: Unverified design-stage timeline

Supporting: Timeline attributed to General Matter/DOE announcement materials via Wikipedia’s sourced summary

Refuting / questioning: No NRC license has been issued; historical US enrichment facility licensing and construction (e.g., the never-completed American Centrifuge Plant expansions, Urenco USA’s decade-plus buildout) has consistently taken longer than initial industry announcements suggested; General Matter’s own regulatory engagement was still at the Letter of Intent stage as recently as December 2024

Summary: Consistent with this section’s general skepticism toward nuclear-adjacent timeline claims (see Nuclear section overview), the late-2020s-to-2034 timeline should be treated as an aspirational target pending NRC license issuance and confirmed construction start at Paducah.

The Infinite Unknown