FundedIQ
Energy

XENERGY: Funding, Investors & Team (Oct 2026)

X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power. X-energy manufactures fuel that seals uranium particles in a protective coating, which makes meltdown impossible and retains the waste inside forever. We also design plants that unlock the fuel’s potential in a process that’s as clean as wind or solar. When combined, the result is reliable carbon-free baseload power, produced more safely and affordable than ever before and available anywhere, at any time.

x-energy.com LinkedIn Rockville, United States 251-500 employees
Clean Energy CleanTech Energy Renewable Energy
Total raised
$744M
Rounds
3
Latest
Series D
Nov 2025

XENERGY has raised $744M across 3 funding rounds on record, the most recent a Series D of $700M announced in Nov 2025.

That round is above the $15M median round size for Energy companies tracked on FundedIQ over the last two years.

XENERGY Company Profile and Key Stats

Total funding raised
$744M
across 3 rounds on record
Funding rounds on record
3
Latest funding round
Series D
$700M in Nov 2025
Employees
251-500
reported band
Headquarters
Rockville, United States

Latest funding round on record: Nov 2025.

XENERGY Funding Rounds

Date
Round
Amount
Series D
$700M
Undisclosed round
$4.2M
Grant
$40.0M

XENERGY raised $40.0M in a Grant announced in Aug 2022.

1.7 years later, an undisclosed round of $4.2M was announced in Apr 2024.

1.6 years later, a Series D of $700M was announced in Nov 2025.

XENERGY Founders and Leadership Team

Name
Role
Contact
Gianna Cindyslocum
Founder
—
Clay Sell
CEO
—
J. Clay Sell
—
Locked

Contact details for the XENERGY team: 1 of 3 have an email address on file, 1 has a LinkedIn profile.

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XENERGY Funding Compared to Other Energy Startups

Segment
Companies
Median round
2,284
$15M
30,319
$7.7M
782
$99M

XENERGY's latest round of $700M is above the median round in Energy. Medians cover the last 24 months of disclosed rounds.

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XENERGY Funding FAQs

What does XENERGY do?

X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power. X-energy manufactures fuel that seals uranium particles in a protective coating, which makes meltdown impossible and retains the waste inside forever. We also design plants that unlock the fuel’s potential in a process that’s as clean as wind or solar. When combined, the result is reliable carbon-free baseload power, produced more safely and affordable than ever before and available anywhere, at any time.

How much funding has XENERGY raised?

XENERGY has raised $744M across 3 rounds on record. The most recent is a Series D of $700M announced in Nov 2025.

When did XENERGY last raise funding?

XENERGY's most recent funding round on record is a Series D of $700M, announced in Nov 2025.

Who founded XENERGY?

FundedIQ lists Gianna Cindyslocum (Founder) at XENERGY.

Who is the CEO of XENERGY?

Clay Sell is listed as CEO at XENERGY.

Where is XENERGY headquartered?

XENERGY is based in Rockville, Maryland, United States.

How many employees does XENERGY have?

XENERGY is in the 251-500 employee band.

How does XENERGY's funding compare to other Energy startups?

XENERGY's latest round of $700M is above the $15M median round size for Energy companies on FundedIQ across 2,284 tracked companies over the last two years.

About FundedIQ's XENERGY Funding Data

FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.

Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for XENERGY is left off this page rather than filled in.

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