TerraPower Funding, Investors & Competitors

TerraPower has raised $1.5B across 2 funding rounds, most recently a $650M undisclosed-stage round in June 2025.

Last TerraPower funding round

$650M

Undisclosed stage · Jun 2025

Cumulative funding TerraPower raised

$1.5B

across 2 funding rounds

Key investors in TerraPower

TerraPower Overview

About TerraPower

TerraPower is a nuclear energy company developing advanced reactors including the Natrium sodium-cooled fast reactor with integrated molten salt storage. Bellevue-Washington headquartered, it leads the Wyoming Natrium demonstration plant under the U.S. DOE’s ARDP, targeting 345 MWe output with load-following capabilities. The firm also advances traveling wave reactors and chloride salt designs.


Founded

2006

HQ

United StatesSeattle, WA

Status

Privately held

Customer focus

B2B & B2G

Revenue model

Product sales

TerraPower Funding History

TerraPower has raised a total of $1.5B across 2 funding rounds, plus 1 secondary share sale.

TerraPower's first fundraising round was a $830M Series A in August 2022. The most recent completed round was a $650M undisclosed-stage round in June 2025.

TerraPower funding rounds

TerraPower funding rounds
DateStageInvestorsRaisedDeal Summary
Jan 2026SecondaryKorea Hydro & Nuclear Power (lead)--
Jun 2025Undisclosed stageNVentures; Bill Gates; HD Hyundai Heavy Industries; HD Hyundai$650MTerraPower, a nuclear innovation company founded by Bill Gates, develops the Natrium advanced nuclear reactor technology, a 345 MW sodium-cooled fast reactor paired with a gigawatt-scale molten salt energy storage system that can boost output to 500 MWe for over five hours. The company is constructing its first commercial advanced nuclear plant near a retiring coal plant in Kemmerer, Wyoming, with non-nuclear construction started in 2024, ahead of schedule on Nuclear Regulatory Commission permitting, targeting electricity production by 2030 or 2031. On June 18, 2025, TerraPower closed a $650 million funding round from new investor NVentures (NVIDIA's VC arm) and existing backers including Bill Gates and HD Hyundai (noted as HD Hyundai Heavy Industries Holdings in some contexts), with UBS as placement agent; further terms undisclosed and TerraPower remaining private. This raise supports the first Natrium plant, estimated at $4 billion total cost with half funded by a $2 billion U.S. Department of Energy Advanced Reactor Demonstration Program grant (sources vary between $1.6B-$2B), and plans for 10-12 additional plants. Previously, TerraPower raised over $1 billion from investors like SK Inc. and SK Innovation. The funding aligns with rising nuclear interest for AI data center power demands amid policy support, including President Trump’s executive orders, positioning TerraPower ahead of competitors in next-gen nuclear deployment. TerraPower has partnerships for supply chain, fuel, and international deployment, including intent to enter UK Generic Design Assessment. CEO Chris Levesque highlighted on-schedule progress and industry solutions for carbon-free energy.
Aug 2022Series ABill Gates (lead); SK Group (lead); ArcelorMittal; Hedonova; HD Hyundai Heavy Industries$830MTerraPower is a nuclear innovation company founded by Bill Gates in 2006 that designs small modular reactors (SMR) and advanced reactor technologies, including the Natrium reactor and Molten Chloride Fast Reactor. In August 2022, TerraPower announced the first phase of a $750 million fundraise, co-led by SK Inc. and SK Innovation alongside Bill Gates. In November 2022, an additional $80 million was raised from new investors including ArcelorMittal and Korea Shipbuilding and Offshore Engineering, bringing the total secured in the year to $830 million. The funding supported TerraPower's development and demonstration of its nuclear technologies, including the Natrium demonstration plant construction at a retiring coal facility in Kemmerer, Wyoming, which was planned for completion by 2028 and was partially funded through the U.S. Department of Energy's Advanced Reactor Demonstration Program requiring a 50% cost match from private sources.

Who has invested in TerraPower?

8 investors have backed TerraPower across its funding rounds, including Bill Gates, HD Hyundai Heavy Industries, NVentures, SK Group, ArcelorMittal and Hedonova.

Lead investors include Korea Hydro & Nuclear Power, Bill Gates and SK Group.


TerraPower Investors

Investors in TerraPower by funding rounds participated
InvestorHQRoundsRoleFirst check
Bill GatesUnited StatesSeattle, WA2LeadAug 2022
HD Hyundai Heavy IndustriesSouth KoreaDaejeon2ParticipantAug 2022
ArcelorMittalUnited StatesLuxembourg1ParticipantAug 2022
HedonovaUnited StatesLos Angeles, CA1ParticipantAug 2022
NVenturesUnited StatesSan Jose, CA1ParticipantJun 2025
Korea Hydro & Nuclear PowerSouth KoreaSouth Korea1LeadJan 2026

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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples

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Acquisitions by TerraPower

TerraPower has acquired 1 company to date.

Last acquisition by TerraPower was on May 16th 2026. TerraPower acquired KAERI for $5M.


Latest Acquisitions by TerraPower

KAERI
Description
KAERI is a nuclear technology development institute in Korea.
HQ CountrySouth Korea
HQ City
Daejeon
Deal Date16 May 2026
Valuation$5M
EV/Revenue
EV/EBITDA

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TerraPower Competitors

TerraPower competitors include listed companies like GE Vernova, Hitachi Energy India and Siemens Energy, and private ones like Kyoto Fusioneering, Radiant and Span.

Public and private companies comparable to TerraPower
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Kyoto FusioneeringJapanTokyoPrivate--$472M-
GE VernovaUnited StatesUnited StatesPublicly listed$38B$3.2B$246B5.4x
Hitachi Energy IndiaIndiaIndiaPublicly listed$826M$125M$15B13.9x
RadiantUnited StatesLos Angeles, CAPrivate--$1.8B-
SpanUnited StatesSan Francisco, CAPrivate--$1B-
Siemens EnergyGermanyGermanyPublicly listed$45B$4.5B$134B2.4x

TerraPower Public Comps

TerraPower is still privately-owned, but its public comps include GE Vernova, Siemens Energy, Enbridge, Williams Companies, Enterprise Products, Bloom Energy, SLB, Energy Transfer, Kinder Morgan and TC Energy.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
GE Vernova$38B$3.2B6.2x5.4x73.5x43.5x
Siemens Energy$45B$4.5B2.7x2.4x27.3x16.1x
Enbridge$47B$15B4.2x3.6x13.3x13.3x
Williams Companies$12B$7.4B10.1x9.8x16.4x14.6x
Enterprise Products$53B$9.6B2.2x1.9x12.3x11.0x
Bloom Energy$2B($14M)40.9x23.7x(5906.9x)112.5x
SLB$36B$7B2.4x2.4x12.5x10.6x
Energy Transfer$86B$15B1.9x1.5x10.5x8.8x

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Common questions about TerraPower

When was TerraPower founded?TerraPower was founded in 2006.
Where is TerraPower headquartered?TerraPower is headquartered in Seattle, WA, United States.
Is TerraPower publicly listed?No, TerraPower is a private, VC-backed company.
How much funding has TerraPower raised?TerraPower has raised $1.5B across 2 funding rounds.
What was TerraPower's last funding round?TerraPower's last funding round was a $650M undisclosed-stage round in June 2025.
Who are TerraPower's investors?TerraPower's investors include Bill Gates, HD Hyundai Heavy Industries, ArcelorMittal, Hedonova, NVentures, Korea Hydro & Nuclear Power, SK Group and HD Hyundai.
Which companies are comparable to TerraPower?Companies comparable to TerraPower include Kyoto Fusioneering, GE Vernova, Hitachi Energy India, Radiant, Span and Siemens Energy.
How many companies has TerraPower acquired?TerraPower has acquired 1 company, including KAERI.
What was the largest acquisition by TerraPower?The $5M acquisition of KAERI in May 2026 is the largest acquisition TerraPower has made to date.

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