Valar Atomics
Nuclear EnergyEl Segundo, United States
Valar Atomics builds small modular nuclear reactors, using helium-cooled, TRISO-fuelled high-temperature gas reactor designs intended to be factory-manufactured in fleets rather than built as individual projects. Its Ward 250 reactor achieved criticality in Utah in June 2026 under the US Department of Energy's Reactor Pilot Program.
Funding
Valar Atomics has raised $800M across 6 disclosed rounds, most recently a Series B in Aug 2026.
$800MRaised
Series BLatest round · Aug 2026
$6BValuation
6Events
Credit FacilityAug 2026confirmed
$200M
InvestorsErebor and other banks
Tap any bar to see that round
$6B (reported; not disclosed by the company)
Aug 2026Series B$1MSequoia Capital, Apandion Capital, Atreides Management, Conviction, Dream Ventures, HOF Capital, Point72 Ventures, Riot Ventures, Snowpoint Ventures, Valor Equity Partners $6B (reported; not disclosed by the company)techcrunch.com ↗
Nov 2025Series A$130MSnowpoint Ventures, Day One Ventures, Dream Ventures, AlleyCorp, Riot Ventures, Palmer Luckey, Shyam Sankar, Lockheed Martinans.org ↗
Valuation journey
Price marks from disclosed rounds — Valar Atomics has been a unicorn since Mar 2026, last reported at $6B (unconfirmed).
◉ Disclosed at round◌ Reported, unconfirmed
Series B · $1MAug 2026reported
$6B
Step-up3× vs Mar 2026
SourceSource ↗
$6B (reported; not disclosed by the company)
Tap any mark to see that valuation
Investor roster
Every disclosed backer and how often they've written a cheque — repeat names are the strongest conviction signal on the cap table.
New · Latest leadSequoia Capital1 round · 2026
Riot Ventures3 rounds · since 2025
Dream Ventures2 rounds · since 2025
Not disclosed2 rounds · since 2026
Snowpoint Ventures2 rounds · since 2025
AlleyCorp2 rounds · since 2025
Apandion Capital1 round · 2026
Atreides Management1 round · 2026
Conviction1 round · 2026
Erebor and other banks1 round · 2026
HOF Capital1 round · 2026
Point72 Ventures1 round · 2026
Valor Equity Partners1 round · 2026
Day One Ventures1 round · 2025
Initialized Capital1 round · 2025
Lockheed Martin1 round · 2025
Palmer Luckey1 round · 2025
Shyam Sankar1 round · 2025
Aggregated automatically from the disclosed rounds above.
Leadership
The Valar Atomics journey
2023 · founded
Founded by Isaiah Taylor to develop high-temperature gas-cooled reactors, with the stated aim of building clusters of thousands of reactors for industrial power. ↗
Feb 2025 · funding
Seed — $19M, led by AlleyCorp.
Feb 2025 · milestone
Emerges from stealth with a contract with the Philippines Nuclear Research Institute to pilot a test-scale reactor and build two full-scale reactors. ↗
Nov 2025 · funding
Series A — $130M, led by Snowpoint Ventures.
Nov 2025 · milestone
NOVA core achieves zero-power criticality at Los Alamos National Laboratory's criticality experiments facility in Nevada. ↗
Mar 2026 · funding
Growth Equity — $340M at $2B (reported), led by Not disclosed.
Mar 2026 · funding
Debt Facility — $110M, led by Not disclosed.
18 Jun 2026 · milestone
Ward 250 completes a zero-power fuelled criticality demonstration at the Utah San Rafael Energy Lab, the second reactor under the DOE Reactor Pilot Program and the first DOE-authorised reactor built outside the national laboratory system. ↗
Jun 2026 · milestone
Signs a development agreement with Nvidia for a waterless 30MW AI facility, and demonstrates Ward 250 powering an Nvidia Blackwell system. ↗
Aug 2026 · funding
Series B — $1M, led by Sequoia Capital.
Aug 2026 · funding
Credit Facility — $200M, led by Erebor and other banks.
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What is Valar Atomics?
Valar Atomics builds small modular nuclear reactors, using helium-cooled, TRISO-fuelled high-temperature gas reactor designs intended to be factory-manufactured in fleets rather than built as individual projects. Its Ward 250 reactor achieved criticality in Utah in June 2026 under the US Department of Energy's Reactor Pilot Program.
Who founded Valar Atomics?
Isaiah Taylor is the founder or leader of Valar Atomics on record at StartupFox.
How much funding has Valar Atomics raised?
Valar Atomics has raised $800M across 6 disclosed rounds. The most recent was a $1M Series B in Aug 2026.
Who are Valar Atomics's investors?
Disclosed investors in Valar Atomics include Sequoia Capital, Apandion Capital, Atreides Management, Conviction, Dream Ventures, HOF Capital, Point72 Ventures, Riot Ventures, Snowpoint Ventures, Valor Equity Partners, Erebor and other banks, Not disclosed.
What is Valar Atomics's valuation?
Valar Atomics was last reported at $6B (reported; not disclosed by the company), at the time of its Series B in Aug 2026.
What is the latest news on Valar Atomics?
The most recent StartupFox coverage is “Valar Atomics Raises $1 Billion in Sequoia-Led Round at a Reported $6 Billion Valuation” (4 August 2026). All stories are listed on this page.
Sources & updates
This profile is compiled by the StartupFox desk from company announcements, regulatory and exchange filings (RoC/MCA, NSE/BSE) and our own reporting. 6 of 6 funding rounds link to a named source.
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