# Source note — X-energy Xe-100 fuel/DOE gate stack (2026-08-17)

## Published item
- Article: https://managingexpectations.net/blog/articles/xenergy-xe100-fuel-doe-gate-stack-source-card.html
- Slug: `xenergy-xe100-fuel-doe-gate-stack-source-card`
- Evidence label: company-source quarterly update + reputable trade reporting; project-development and supply-chain gates, not delivered reactor power.

## Official / primary anchors checked
1. X-energy official Q2 2026 results release — `https://investors.x-energy.com/news-releases/news-release-details/x-energy-reports-second-quarter-2026-results`
   - Says Q2 revenues and grant income were $54.6 million versus $21.5 million in Q2 2025.
   - Says X-energy entered long-term HALEU enrichment-service agreements with Centrus Energy and General Matter.
   - Says it announced an agreement with SGL Carbon for nuclear-grade graphite manufacturing capacity.
   - Says DOE ARDP continuation application approval extends the budget period through March 2027.
   - Says Tennessee provided an $11 million economic-development grant for the TRISO-X fuel fabrication campus and that X-energy acquired about 70 acres adjacent to the Oak Ridge fuel campus.
2. DOE ARDP page — `https://www.energy.gov/ne/advanced-reactor-demonstration-program`
   - Context for the U.S. Advanced Reactor Demonstration Program. Used only as program background, not as a fresh funding-award announcement.

## Reporting / trade anchors checked
1. ANS / Nuclear Newswire, August 17, 2026 — `https://www.ans.org/news/2026-08-17/article-8297/xenergy-terrapower-share-updates-on-advanced-reactor-projects/`
   - Reports CEO Clay Sell said DOE notified X-energy it would receive an additional $1 billion in cost-shared funding for the Long Mott project.
   - Reports the company wants four Xe-100 reactors at Dow’s UCC Seadrift Operations in Texas.
   - Reports NRC construction-permit review timing expectations and a future Cascade/Amazon/Energy Northwest application timing expectation, attributed to Sell.
2. Reuters lead found through Google News RSS — direct Reuters fetch returned 401/blocked in this environment, so the final article does not rely on Reuters for unique facts.

## Leads checked but not selected as the main article
- TerraPower/HDEC/SK Innovation Korea agreements: substantive, but Managing Expectations already published a TerraPower + Korea Natrium source card on August 14.
- IAEA/IMO ATLAS maritime nuclear initiative: relevant but already covered in the August 12 IAEA ATLAS maritime-nuclear source card.
- INL advanced nuclear cybersecurity summit: official and current, but less directly tied to SMR deployment, uranium/fuel supply, industrial heat or AI firm-power procurement than the X-energy gate-stack update.

## Editorial cautions used
- Do not convert a quarterly update, ARDP budget-period continuation, CEO-reported DOE notice, or trade article into a final DOE award notice unless the official DOE grant language is separately posted.
- Do not treat HALEU enrichment-service agreements, graphite capacity, or land/fuel-campus expansion as reactor construction, NRC approval, operating licence, commercial power delivery, or a data-center/industrial-heat PPA.
- Not investment advice: mentions of X-energy, Centrus, General Matter, Dow, uranium, HALEU, nuclear graphite, reactor developers, utilities or data-center power demand are infrastructure context only.