X-Energy, Inc. Class A Common Stock (XE) | The Buildout — AI Infrastructure
The Verdict
X-Energy designs the Xe-100, an 80 MW-class small modular reactor that can supply electricity and high-temperature industrial steam, and it makes TRISO nuclear fuel through TRISO-X. The company sits at the power-supply layer of the AI buildout: hyperscale data centers need firm, clean power, and X-Energy's reactors are a potential source. Its role is early — no reactor is operating and no fuel is sold at commercial scale — but the integrated reactor-plus-fuel model is aimed at controlling schedule and supply in a constrained market.
| Market Cap | — |
| Revenue (TTM) | $149M |
| EBITDA Margin (TTM) | -186.8% |
| Net Cash | $1.6B |
| Earnings Beats | 0 of 1 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- DOE support: ARDP cost share up to $2.115B, with $547M reimbursed cumulatively as of June 30, 2026; budget period extended through March 2027.
- HALEU risk retired for announced projects via binding long-term agreements with Centrus and General Matter plus about 7.6 metric tons of DOE material.
- Balance sheet: $1.9B cash and investments and $0 debt at June 30, 2026, after $1.1B net IPO proceeds.
- Pipeline: 144 reactors / about 11.5 GW as of March 31, 2026, assuming contingent rights exercised; Amazon program is 5 GW and Centrica intent is up to 6 GW.
- Fuel build: TX-1 shell about 80% complete, Part 70 license received February 2026, TX-1 throughput for 11 Xe-100s; TX-2 planned at 4x TX-1 and campus sized for about 55 reactors.
What We’re Watching
- Next 1 GW investor-owned utility project: announced as in final throes and targeted for 2026, but counterparty, site and structure are undisclosed.
- Dow construction permit: safety questions expected closed by end of August 2026, final review late 2026, issuance expected Q1 2027.
- HALEU execution: first Dow HALEU core needed toward the end of the decade; HALEU agreement timing, quantity and price remain contractually undisclosed.
- Cash burn: operating cash use was $97.3M in Q2 2026 versus $20M a year earlier; capex was $63.3M.
- Utility gating: Southern says not next; Duke needs risk offset; AEP disciplined; new nuclear orders remain conditional.
The development case is strengthening: DOE raised cost share, HALEU risk is claimed retired, and TX-1 construction is progressing. The commercial case is still unproven: no dollar backlog, no product revenue, and the largest order is not announced. The open question is whether the 1 GW IOU deal arrives on schedule and whether it is hyperscaler-backed or rate-base.
Earnings
X-Energy reported Q2 2026 revenue and grant income of $54.6M, up 154% from $21.5M in Q2 2025. Gross margin was -59.9%. Operating cash use widened on higher ARDP activity and vendor prepayments.
| Metric | Q2 FY2026 | Q1 FY2026 | Q1 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $55M | $43M | $17M | +219.3% |
| Gross margin | -59.9% | -50.5% | -68.1% | +820bps |
| EBITDA | −$109M | −$66M | −$26M | +319.2% |
| EPS | $-0.21 | $-8.31 | $-0.04 | +465.6% |
| ARDP cumulative reimbursement | $547M | ~$508M | n/a | — |
We have contractually retired the HALEU risk, as it relates to the first HALEU core loads on our announced projects and beyond.— Clay Sell, CEO, 2026-08-13
Management tone: Management's commentary was heavy on de-risking and confident-to-emphatic, with funding, supply agreements and construction progress front-loaded and the largest commercial item withheld. They corrected an analyst misread on the Dow LEU start and flagged noncash items so analysts would not misread them. The call had substantial news but limited financial quantification.
Management Guidance
No financial guidance was issued. Management reiterated project-milestone guidance: Dow construction permit issuance Q1 2027; Energy Northwest construction permit submission H1 2027; TX-1 vertical completion Q3 2026; next 1 GW project announcement in 2026; ARDP budget period through March 2027. The ARDP additional $1B is subject to the same 50-50 cost share and expected to be obligated through the normal contractual process.
Trajectory
Revenue is growing fast off a low base: Q1 2026 was $43.4M, up 109% YoY, and Q2 2026 was $54.6M, up 154%. The driver is reimbursed ARDP engineering work, not product sales. Costs are growing slightly faster — opex rose 133% in Q1 and 156% in Q2 — and EBITDA went from -$65.7M in Q1 to -$109.4M in Q2. Operating cash use widened, reflecting higher ARDP activity, head count, contractors and long-lead vendor prepayments. Gross margin was -59.9% in Q2.
The Model
The model projects FY+1 revenue of $240.0M with EBITDA of -$377M (-157.1% margin). For FY+2 it projects revenue of $392.5M with EBITDA of -$491M (-125% margin). The near term is anchored by reimbursed ARDP engineering work, Dow and TX-1 spending, and the next 1 GW project. FY+2 depends on converting announced pipeline into commercial reactor and fuel revenue while the cost base continues to build.
| Metric | TTM | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $149M | $240M | $392M |
| YoY Growth | — | +61.4% | +63.5% |
| EBITDA | −$278M | −$377M | −$491M |
| EBITDA Margin | -186.8% | -157.1% | -125.0% |
Projections are the median of 5 independent model runs.
No financial guidance was issued. Management reiterated project-milestone guidance: Dow construction permit issuance Q1 2027; Energy Northwest construction permit submission H1 2027; TX-1 vertical completion Q3 2026; next 1 GW project announcement in 2026; ARDP budget period through March 2027. The ARDP additional $1B is subject to the same 50-50 cost share and expected to be obligated through the normal contractual process.
What Could Go Right — and Wrong
- Next ~1 GW IOU project announced, converting pipeline language into a firm commercial order.
- DOE formally obligates the additional up to $1B ARDP funding and extends the budget period beyond March 2027.
- First Dow HALEU core stays on schedule and HALEU contracts are assigned to customers.
- TX-1 completes and demonstrates ≥95% first-pass kernel yield at commercial scale; third-party fuel sales begin.
- Large utilities move past the new-nuclear gate and sign disclosed SMR orders, broadening the customer set beyond Dow, Amazon/Energy Northwest and Centrica.
- The 1 GW IOU announcement slips past 2026 or the counterparty structure is less commercial than expected.
- ARDP funding stalls or further increases are needed; total program cost remains undisclosed.
- HALEU timing slips at Centrus or XE cannot assign contracts to customers, leaving undisclosed balance-sheet obligations.
- Operating cash use stays near Q2 levels without a corresponding commercial booking, shortening the runway.
- Commercial TRISO market remains uncertain; BWXT declines full capital commitment and no third-party fuel revenue appears.
Looking Ahead
Over the next 12 months the story is milestone-heavy. Near-term markers include Dow safety questions closing by end of August 2026, TX-1 vertical completion and interior build-out in Q3 2026, Dow permit final review in late 2026, and the targeted 2026 announcement of the next 1 GW project. In 2027, Dow construction permit issuance is expected Q1 and Energy Northwest construction permit submission H1, while the ARDP budget period runs through March 2027. The key test is whether the commercial pipeline produces a firm order before the cash burn and government-funded development phase extend further.
- End of August 2026Dow safety questions close — NRC staff expected to close all safety questions on Dow permit.
- Q3 2026TX-1 vertical completion — Interior build-out begins; graphite matrix powder building, utilities, equipment.
- 2026Next 1 GW announcement — Full disclosure of counterparty, site and structure for IOU project.
- Late 2026Dow permit final review — NRC final review expected complete ahead of Q1 2027 issuance.
- Q1 2027Dow permit issuance — Construction permit expected for Seadrift, Texas deployment.
- H1 2027Energy Northwest permit filing — Construction permit submission targeted for Washington project.
Financials
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)-65.6%
- EBITDA Margin (TTM)-186.8%
- Net Margin (TTM)-199.7%
- ROIC-106.9%
- SBC / Revenue36.2%
The Company
X-Energy designs the Xe-100, an 80 MW-class small modular reactor that produces electricity and high-temperature industrial steam. It also manufactures TRISO nuclear fuel through TRISO-X. Management describes the company as a leading designer of advanced nuclear reactor technology and manufacturer of nuclear fuels. The company is pre-commercial-revenue: its reported revenue is DOE cost-share reimbursement for engineering work plus grant income tied to the Dow demonstration reactor.
X-Energy is vertically integrated: it designs the reactor and owns the fuel business, with a dedicated TRISO-X campus in Oak Ridge, Tennessee. TX-1 is its first fuel fabrication plant, licensed under an NRC Part 70 commercial license received February 2026 with an initial 40-year term. The company is building TX-1 under a 50-50 DOE cost share and an $11M Tennessee grant. TX-2 is in design, planned at 4x TX-1 capacity, and the campus is sized for about 55 Xe-100 reactors. It has no debt and $1.9B cash and investments at June 30, 2026.
Business Segments
Competitive Landscape
The advanced nuclear field includes several named competitors. X-Energy's differentiated assets include a Part 70 fuel fabrication license — described as the first new commercial fuel fabrication facilities licensed by the NRC in over 50 years — and an integrated reactor-plus-fuel model. The CEO frames the ARDP selection as a competitive award alongside TerraPower. Management also acknowledges large reactors such as AP1000 may make sense in some locations while arguing SMRs have advantages in functionality, safety case, geographic siting and financial risk.
- Listed as a competitor for advanced nuclear reactors for data centers and industrial applications.
- Listed as a competitor for small modular reactors for data centers and utilities.
- Listed as a competitor in HTGR microreactor technology.
- BWXTNames TRISO X among TRISO fuel competitors; describes commercial TRISO market as still highly uncertain and declines full capital commitment.
- TerraPowerCo-selected with X-Energy for heavy DOE ARDP investment.
Supply Chain
X-Energy sits at the reactor-and-fuel layer. It is pre-revenue commercially and is using IPO proceeds and DOE cost-share to secure HALEU, graphite, large steel and construction capacity ahead of customer orders.
More on XE: Earnings recap