X-energy
Designs the Xe-100, an 80 MWe pebble-bed high-temperature gas reactor, and makes its own TRISO-X fuel. Dow’s Long Mott project in Texas and Amazon’s Cascade project in Washington are its first plants.
Facts
Source per value- DesignThe company's lead reactor design name(s) as the company or its regulator names them; semicolon-separated when it markets more than one.
- Xe-100 2
- TypeReactor coolant/technology family. Gas-cooled fast is separated from thermal HTGR designs; sodium-cooled includes both fast and thermal-spectrum designs.
- HTGR 2
- Size classDerived from published electric output per module: Micro is 20 MWe or less, Small is above 20 and up to 300 MWe, Medium is above 300 MWe. Legacy heat-only classifications use one third of thermal output as an explicit comparison convention, not a claimed electric rating.
- Small 5
- MWe / module MWeNet (or gross where only gross is published) electric output of one reactor module as the company or its regulator publishes it. Null for heat-only designs.
- 80 5
- MWt / module MWtThermal output of one reactor module as published by the company or its regulator.
- Not published
- FuelFuel form and enrichment class as published (for example LEU UO2, HALEU TRISO, fuel salt).
- TRISO-X pebbles 4
- Licensing stageFurthest licensing milestone reached with any national regulator: Operating; Construction licensed (construction permit or licence issued); DOE test authorization (a test reactor authorized or built under the US Department of Energy, for example the Reactor Pilot Program or the DOME test bed); Construction under review (construction, site or creation application filed); Design approved (design certification, standard design approval or GDA completed); Design review (formal design review under way, such as UK GDA, CNSC vendor design review or a French safety-options review); Pre-licensing (pre-application engagement only).
- Construction licensed 26
- RegulatorsNational regulators the company has formally engaged (NRC, CNSC, ONR, ASN, and others), semicolon-separated.
- NRC 2
- Licensing detailThe milestones behind the licensing stage, by regulator, with dates.
- Long Mott Energy (Dow) applied on 2025-03-31; NRC docketed the application on 2025-05-12, issued the environmental assessment on 2026-05-18 and approved the construction permit on 2026-11-09. Dow’s board approval of the build is the next step. 236
- Latest milestoneDate of the milestone that sets the licensing stage (for example the day a construction permit was issued or an application docketed).
- 2026-11-09 26
- First siteLocation of the first-of-a-kind commercial or demonstration unit, with the owner or host.
- Long Mott, Seadrift, Texas (Dow): four Xe-100s 26
- First powerYear the company or its host utility targets for first operation (criticality or commercial operation, as stated) of the first unit. A plan, not a guarantee.
- Not published
- OwnershipPublic (listed shares), Private (venture or privately held), Subsidiary (a unit or joint venture of a larger company) or State-owned.
- Public 1
- TickerExchange and ticker of the company or its listed parent.
- NASDAQ: XE 1
- ListedFirst trading day of the company's shares (or its listed parent's current ticker) on the exchange named in Ticker.
- 2026-04-24 7
- FundingHeadline funding: equity raised, public listing, government cost-share awards (DOE ARDP, GAIN, Great British Nuclear and others), with amounts and dates.
- Nasdaq trading began 2026-04-24 as XE; IPO settled 2026-04-27, raising approximately $1.1 billion net. 1
- Data-center dealTrue when the company has a signed, announced agreement (PPA, framework, MOU, investment or capacity reservation) with a hyperscaler or data-center operator.
- Yes 5
- Data-center partnersHyperscalers and data-center operators the company has a signed or announced agreement with, semicolon-separated.
- Amazon 5
- Data-center dealsWhat each data-center or hyperscaler agreement covers: partner, type of agreement, capacity and date.
- Amazon and X-energy plan more than 5 GW of Xe-100 projects in the US by 2039; the first, Energy Northwest’s Cascade facility in Washington, is planned at 960 MW from 12 reactors. 35
- HQCountry of the company's headquarters.
- United States 4
- RegionHeadquarters region.
- North America 4
Sources
- X-energy: first-quarter 2026 results confirm Nasdaq trading and IPO settlement accessed 2026-11-11
- NRC: Long Mott accessed 2026-11-11
- ANS: X-energy, TerraPower updates accessed 2026-11-11
- X-energy: $700M Series D accessed 2026-11-11
- Latitude Media: X-energy Series D accessed 2026-11-11
- Dow: Long Mott Generating Station receives NRC construction permit (2026-11-09) accessed 2026-11-11
- The Next Web: X-energy debuts on Nasdaq as XE (24 April 2026) accessed 2026-11-11
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