X Energy, LLC

Rockville, MD X Energy LLC Part of X-Energy Reactor Company, LLC

UEI
G9VTBQMKSTQ8
CAGE
6X4A1
Primary NAICS
332410 Power Boiler and Heat Exchanger Manufacturing
SAM.gov registration
Active through

Company facts

Self-certified in SAM.gov
  • For Profit Organization
  • Limited Liability Company
Entity structure
Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov
Corporate family
SAM.gov registration date
Physical address
530 Gaither Rd Suite 700, Rockville, MD 20850, USA
Website
x-energy.com
Founded
2009
Employees
251-1K
Estimated annual revenue
$50M-$100M
Industry
  1. Utilities
  2. Electric Utilities
  3. Energy
SIC code
49 Electric, Gas, & Sanitary Services
Profiles

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Recent federal awards

X Energy, LLC's 5 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award Agency Obligated Awarded
Advanced nuclear power for installations (anpi) Contract · HQ08452590067 Office of the Secretary of Defense $2,196,079
Market-driven optimization of the x-energy next-generation integrated transportable high-temperature (xenith)… Grant · DENE0009434 National Nuclear Security Administration $2,341,538
Competitive cooperative agreement: advanced reactor demonstration FOA# DE-FOA-0002271 pathway 1 advanced reactor… Grant · DENE0009040 National Nuclear Security Administration $2,153,222,011
Gemina DE-FOA-0002174 x-energy, LLC - new conditional award control no: 2174-1535 project title: advanced operation &… Grant · DEAR0001292 Advanced Research Projects Agency $11,229,982
Competitive cooperative agreement: US industry opportunities for advanced nuclear technology development FOA… Grant · DENE0008931 National Nuclear Security Administration $6,627,814

About X Energy, LLC

Written by GovTribe AI ·

X Energy, LLC is an advanced nuclear reactor and fuel company that develops Generation IV high temperature gas cooled nuclear reactors and TRISO fuel. The company specializes in next-generation clean and safe nuclear energy technologies.

X Energy has been awarded several prime federal contracts to design and develop advanced nuclear reactor technologies. In 2020, the company received a $60.5 million Other Transaction Agreement from the Department of Defense to design a mobile nuclear reactor, providing research, design, and demonstration services. Additionally, X Energy has served as a subcontractor to General Atomics for scientific and technical services and chemical/reagent supply.

Through federal grants, X Energy has received significant funding from the Department of Energy (DOE) to support the research, development, and commercialization of its innovative nuclear reactor designs and fuel technologies. In 2023, the DOE Office of Nuclear Energy awarded X Energy a $3.4 million Cooperative Agreement to optimize the design of its X-energy XENITH microreactor based on market needs. X Energy also received a $1.46 billion Cooperative Agreement in 2021 from the DOE's Advanced Reactor Demonstration Program to facilitate the development of its advanced reactor demonstrations. Furthermore, the company has received grants from the DOE Advanced Research Projects Agency and the DOE Office of Nuclear Energy for projects related to advanced operation and maintenance techniques, nuclear technology development, and reducing fixed operating and maintenance costs.

Quick answers

What is X Energy, LLC's UEI?

X Energy, LLC's Unique Entity ID (UEI) in SAM.gov is G9VTBQMKSTQ8.

What is X Energy, LLC's CAGE code?

X Energy, LLC's CAGE code is 6X4A1.

What is X Energy, LLC's primary NAICS code?

X Energy, LLC's primary NAICS code is 332410 (Power Boiler and Heat Exchanger Manufacturing).

Where is X Energy, LLC located?

X Energy, LLC's physical address in SAM.gov is 530 Gaither Rd Suite 700, Rockville, MD 20850, USA.

Is X Energy, LLC registered in SAM.gov?

Yes. X Energy, LLC's SAM.gov registration is active through December 22, 2026.

Who is X Energy, LLC's parent company?

X Energy, LLC is part of X-Energy Reactor Company, LLC.

What is X Energy, LLC's most recent federal award?

X Energy, LLC's most recent federal contract award is Advanced nuclear power for installations (anpi) (HQ08452590067), from Office of the Secretary of Defense, on August 4, 2025.

On GovTribe

See X Energy, LLC's full federal record

  • Federal contract awards
  • Federal grant awards
  • Subcontracting relationships
  • Funding analysis by agency, NAICS and set-aside
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