X Energy

X Energy

Private
Rockville, MarylandEnergy & Sustainabilityhttps://www.x-energy.com

Last Round

Series D

11/24/2025

Total Funding Raised

$1.9B

Momentum Score

50 /100

Company Overview

X Energy is a clean energy company specializing in advanced small modular reactor (SMR) and fuel technology aimed at transforming the nuclear energy sector with its innovative Xe-100 reactor, which offers enhanced safety, cost-effectiveness, and versatility in energy generation.

Sector

Energy & Sustainability

Verticals

Renewable Energy, Advanced Materials, Clean Manufacturing, Defense Tech

Business Model

B2G

Customer Profile

Hardware Sales, Government Contracts, Services & Consulting

AI Layer

Non-AI

Keywords

small modular reactorSMRTRISO-X fueladvanced nuclearhigh-temperature gas-cooled reactorHTGRnext-gen nuclearpebble-bed reactorbaseload powerprocess heatnuclear fuel fabricationmobile microreactorindustrial decarbonizationnuclear engineering servicesAdvanced Reactor Demonstration ProgramARDP

Historical Pricing

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Caplight Momentum Score

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X Energy Comps

Public and private peers based on sector, stage, and business model.

CompanyStatusEst. ValuationRev Multiple
OpenAIPrivate$86.0B~40x
CoherePrivate$5.0B--
Competitor 1Public$XX.XBXXx
Competitor 2Public$XX.XBXXx

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X Energy Funding Rounds

Historical fundraising activity

RoundDateAmount RaisedValuationInvestorsSources
Series D11/24/2025
Series C Extension2/6/2025
Series C12/5/2023
Grant8/23/2022
Series B10/1/2021
Grant
10/14/2020

Key People

Founding team and executive leadership

Amanda Ince

CEO

Executive Team

Claudia Fernandez

Chief Executive Officer

Executive Team

Gianna CindySlocum

Co-Chief Executive Officer

Executive Team

J. Clay Sell

Chief Executive Officer

Executive Team

X Energy Investors

Notable investors and investment history

InvestorRounds
Bascom VenturesSeries B
Jane StreetSeries C Extension, Series D
Towerview VenturesSeries B
Corner CapitalSeries D
University of MichiganSeries C Extension
Reaves Asset ManagementSeries D
Corner Capital ManagementSeries D

Market signals

Structured signals derived from secondary market and firmographic data.

  • Mar 23, 2026

    Developing the Xe-100 SMR, capable of producing 80 megawatts of electricity.

  • Mar 22, 2026

    Letter of intent signed with Talen Energy for joint reactor development in Pennsylvania.

X Energy Filings

SEC and related filings with document metadata.

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X Energy Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about X Energy's valuation, stock price, and market status.

Firmographic Details

HeadquartersRockville, Maryland
Employee Range1,771
Year Founded2010
Last Funding11/24/2025

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