Xe-100
US
Basics
Reactor Type
Gas Cooled Reactor
Reactor Description
High temperature pebble bed GCR
Electric Output (MWe)
82
Thermal Output (MWt)
200
Size
Small
Spectrum
Thermal
Developer
X-Energy LLC
Pilot Site Details
Dow Chemical facility in Seadrift, Texas and Energy Northwest's Richland site, Washington
Details
Use (goal of commercial operation)
N/A
Deployment medium
Land-Based
Design Lifetime (Years)
60
Fuel
Fuel class
HALEU
Fuel Type
TRISO Pebble
Fuel Cycle
N/A
Cooling & Temperature
Reactor cooling of primary loop
Helium
Reactor moderator
Graphite
Reactor Outlet Temperature (°C)
750
Status
Design status
Basic Design
Licensing status
- Jan 2024 - Completed phases 1 and 2 of...
- Jan 2024 - Completed phases 1 and 2 of the pre-licencing vendor design review (VDR) process of Canada's CNSC
- In 2021 - NRC and CNSC conducted joint review of RPV white paper report
- Jul 2020 - Agreement signed for combined pre-licencing vendor design review (VDR) with Canadian regulator CNSC
- Sep 2018 - Started pre-application activities with US regulator NRC. Dozens of topical reports filled since then.
Deployment timeline
First demonstrator aimed for 2028
Agreements and Engagement
- Oct 2024: Amazon announced...
- Oct 2024: Amazon announced buying a stake in developer X-energy
- Apr 2024 - X-energy UK and Cavendish Nuclear were awarded £3.34m by UK government to develop plans for 12-reactor plant at Hartlepool, northern England in 2030s
- Jul 2023 - Energy Northwest and X-energy have signed an agreement for a potential deployment of up to 12 Xe-100 in central Washington state
- May 2023 - Dow and X-energy chose Dow’s UCC Seadrift Operations manufacturing site in Texas for a proposed pilot Xe-100 plant
- Jan 2023 - X-energy and Invest Alberta signed a MoU to develop economic opportunities supporting the potential deployment of Xe-100 in the province
- Oct 2022 - Work began on the construction of a $300m nuclear fuel fabrication plant for TRISO fuel at Oak Ridge, Tennessee.
- Aug 2022 - X-energy and Dow Chemicals signed agreement for deployment of Xe-100 at unnamed Gulf Coast site
- Jul 2022 - Ontario Power Generation and X-energy signed agreement to explore deployment of the Xe-100 at industrial sites in Ontario
- In 2020 - X-energy was selected as one of the two awardees of funding under the US DOE Advanced Reactor Demonstration Program (ARDP) for a seven-year period
