Valar Atomics
Valar Atomics is a venture-backed nuclear energy startup founded in 2023 that designs and deploys high-temperature gas reactor microreactors based on TRISO fuel and helium coolant, serving AI data centers, heavy industry, the U.S. Department of Defense, and clean fuel producers through its standardized Numenor reactor architecture and co-located Gigasite manufacturing and deployment model.
- Company typePrivate
- Founded2023
- HeadquartersEl Segundo, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Valar Atomics does
Valar Atomics is a venture-backed nuclear energy startup founded in 2023 by Isaiah Taylor and headquartered in Hawthorne/El Segundo, California, that designs and deploys high-temperature gas reactor (HTGR) microreactors and small modular reactors based on a proprietary architecture called Numenor, which combines TRISO fuel, a graphite moderator, and helium coolant to deliver high-grade process heat above 750°C. The company builds standardized reactor products — the non-nuclear thermal test prototype Ward Zero, the 5 MW air-transportable microreactor Ward 250 (disassemblable into eight modules for C-17 airlift), and the 100 kWt Ward One test reactor — and is developing the first venture-backed nuclear startup to achieve zero-power criticality, which it did at Los Alamos National Laboratory's NCERC on November 17, 2025 under Project NOVA. Valar's deployment model, branded the Gigasite model, co-locates reactor manufacturing and operation at single large "energy campuses" intended to house hundreds to thousands of reactors, with the goal of producing hydrogen (via a sulfur-iodine cycle), AI data center power, heavy industrial power and process heat, and clean hydrocarbon fuels synthesized from captured CO2 via a modified Fischer-Tropsch process.
The company's current customer base is overwhelmingly governmental: the U.S. Department of Energy (Reactor Pilot Program and Fuel Line Pilot Program under Executive Order 14301), the U.S. Department of War/Department of Defense (Operation Windlord/Janus Program, including the first-ever C-17 airlift of a complete nuclear reactor on February 15, 2026), the State of Utah (San Rafael Energy Research Center in Emery County), and the Philippines Nuclear Research Institute (pilot reactor partnership). Valar has not yet recorded commercial revenue; commercial power sales are targeted for 2028 with full commercialization expected by late 2027. Revenue mechanics are expected to evolve from current government R&D and pilot contracts (DOE, DoD, State of Utah) toward future hardware sales of Ward 250-class and gigasite reactors to industrial and data center off-takers, supplemented by managed off-take of hydrogen, electricity, and synthetic fuels produced on the gigasites themselves.
The company has raised $19 million in seed funding (February 2025, led by Riot Ventures), $130 million in Series A (November 2025, led by Snowpoint Ventures with participation from Palmer Luckey, Shyam Sankar, Day One Ventures, and Dream Ventures), and $450 million at a $2 billion valuation in April 2026 ($110 million debt, $340 million equity). It is also a co-plaintiff, alongside Texas, Utah, Louisiana, Florida, Arizona, Last Energy, and Deep Fission, in a lawsuit against the Nuclear Regulatory Commission seeking to exempt small test reactors from NRC jurisdiction.
Valar Atomics firmographics
Firmographics- Name
- Valar Atomics
- Legal name
- Valar Atomics Inc.
- Website
- https://www.valaratomics.com
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Valar Atomics is a venture-backed nuclear energy startup founded in 2023 that designs and deploys high-temperature gas reactor microreactors based on TRISO fuel and helium coolant, serving AI data centers, heavy industry, the U.S. Department of Defense, and clean fuel producers through its standardized Numenor reactor architecture and co-located Gigasite manufacturing and deployment model.
- Ownership category
- akta.pro rank
Valar Atomics industry classification
Industry- Product category
- Advanced Nuclear Energy Systems
- NAICS
- Nuclear Electric Power Generation (221113)
- SIC
- Cogeneration Services & Small Power Producers (4991), Engines & Turbines (3510)
- akta.pro primary industry
- Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors) (EUAKADAC)
- akta.pro secondary industries
- Microreactor Power Generation (EUACADAG), Gas-Cooled Reactor (AGR/HTGR) Power Generation (EUACADAD)
Keywords
Where Valar Atomics is headquartered
LocationHeadquarters
- HQ city
- El Segundo
- HQ country
- United States
- HQ region
- North America
Offices6 records
Markets served
Valar Atomics business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Technology or R&D, Supply Chain, Infrastructure, Operations, Marketing or Sales
Revenue model
- Small Modular Reactor Hardware Sales: Long-cycle hardware sales of Valar's small modular reactors and microreactors (Ward 250-class and future gigasite reactors) to industrial customers, data centers, defense, and government customers. Commercial power sales targeted for 2028.
- Government Contracts / Test Reactor Sales: Revenue from DOE and Department of War partnerships covering reactor design, fabrication, transportation, and testing under the Reactor Pilot Program and Fuel Line Pilot Program.
- Gigasite Power, Hydrogen, and Clean Fuel Offtake: Future revenue from grid-independent products produced at gigasites: hydrogen, data center power, heavy industrial power, and clean hydrocarbon fuels, sold to co-located industrial partners and off-takers.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Quote-based reactor and gigasite sales — not publicly disclosed |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels6 records
Valar Atomics product offering
Product offeringCore offering
Valar Atomics designs and manufactures High-Temperature Gas Reactor (HTGR) microreactors and small modular reactors using TRISO fuel, a graphite moderator, and helium coolant, deployed through its co-located "gigasite" manufacturing-deployment model. The company's core offerings are the Ward 250 5 MW air-transportable microreactor, the Ward Zero 1:1 thermal test prototype, and the Ward One 100 kWt test reactor, which produce grid-independent electricity, hydrogen, industrial process heat, and clean synthetic hydrocarbon fuels. Customers are industrial, government, and defense buyers seeking carbon-free baseload power outside the constraints of the traditional grid.
Product overview
Valar Atomics is a single-platform nuclear energy company built around its proprietary Numenor HTGR (high-temperature gas reactor) architecture and its 'gigasite' deployment model. The platform is anchored by three named reactor products — the Ward Zero non-nuclear thermal test prototype, the operational Ward 250 5 MW microreactor, and the small Ward One 100 kWt HTGR — all using TRISO fuel, a graphite moderator, and helium coolant. That standardized core reactor platform is then used to deliver four grid-independent product lines on each gigasite: Hydrogen Production (sulfur-iodine cycle), Data Center Power (for AI compute), Industrial Power (green steel, bauxite electrolysis, process heat), and Clean Hydrocarbon Fuels (hydrogen + captured CO2 via modified Fischer-Tropsch).
Differentiator
Problem solved
Functional benefit
Brands
- Ward 250: Valar Atomics' advanced test reactor and primary product brand: a high-temperature gas-cooled microreactor being deployed at the San Rafael Energy Research Center in Utah under the DOE Reactor Pilot Program.
- Ward Zero
- Ward One
Products and services
- Ward 250 Microreactor A 5 MW high-temperature gas-cooled microreactor built on the Numenor HTGR architecture using TRISO fuel, graphite moderator, and helium coolant. Disassembles into eight modules for C-17 airlift and rapid reassembly at remote sites with only a 3,500-ft runway. Capable of powering approximately 5,000 homes; targeted at AI data centers, heavy industrial users, and the U.S. military.
- Ward Zero Thermal Test Reactor A 1:1 non-nuclear thermal test reactor with silicon carbide heating elements modified in the core, used to exercise every reactor system at full operational temperatures prior to nuclear operations, de-risking the Ward 250 design.
- Ward One Test Reactor
Quantifiable outcome
- 5 MW of electricity per Ward 250 microreactor, sufficient to power approximately 5,000 homes
- +4 more outcomes
Companies that use Valar Atomics
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Valar Atomics technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Valar Atomics partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered minor, flagship and core.
- Pax Silica / US-Philippines Economic Security ZoneminorJoined US Undersecretary of State Jacob Helberg's visit to a proposed 4,000-acre site in New Clark City alongside 8VC, Agility Robotics, Joby Aviation, and Foxconn, as part of the Pax Silica technology supply chain alliance. The Philippines became the 13th member of Pax Silica and the alliance has grown to 15 members.
- U.S. Department of War / U.S. Department of DefenseflagshipPartnered under Operation Windlord within the Janus Program to airlift the Ward 250 microreactor from March Air Reserve Base to Hill Air Force Base via C-17 on February 15, 2026. Supports future battlespace power needs for AI-enabled systems and directed-energy weapons; aligns with President Trump's May 2025 executive orders to strengthen America's nuclear energy posture.
- U.S. Air Force (C-17 airlift / Operation Windlord)coreThree C-17 Globemaster III aircraft from March Air Reserve Base airlifted the disassembled Ward 250 reactor (eight modules) to Hill Air Force Base, Utah, on February 15, 2026. Energy Secretary Chris Wright and Under Secretary of Defense Michael Duffey were aboard the flight, establishing the world's first airlift of a complete nuclear reactor.
- Los Alamos National Laboratory (LANL) / National Criticality Experiments Research Center (NCERC)flagshipProject NOVA (Nuclear Observations of Valar Atomics) is a co-development collaboration where Valar built and provided the NOVA Core (TRISO fuel, graphite moderator, configuration) and LANL NCERC provided the Comet critical assembly, safety envelope, experimentalists, instrumentation, and data analysis. Achieved zero-power criticality at the Nevada National Security Site on November 17, 2025 — the first criticality by a venture-backed startup. Experiments continue in six configurations.
- U.S. Department of Energy (DOE)flagshipSelected under Executive Order 14301 as one of ten companies for the Reactor Pilot Program, with the goal of achieving criticality on American soil by July 4, 2026. Valar was also selected for the parallel Fuel Line Pilot Program (one of five companies). DOE provides fast-track regulatory authorization through the Atomic Energy Act, fuel preference, and oversight, bypassing NRC licensing during the pilot phase.
- Philippines Nuclear Research Institute (PNRI)corePartnered with PNRI to build a pilot microreactor in the Philippines. The site was identified as part of Valar's early international expansion strategy; the company also participated in a visit to the proposed 4,000-acre (1,620-hectare) New Clark City site under the Pax Silica US-Philippines economic security zone framework.
- State of Utah / Governor Cox administration / San Rafael Energy Research CentercoreSigned a deal with Utah in May 2024 to build an advanced reactor operational by July 4, 2026. Testing and evaluation occur at the Utah San Rafael Energy Research Center in Emery County. The state partnership covers the Ward 250 test reactor deployment and broader 'Operation Gigawatt' goals.
Scale indicators13 records
Recent moves6 records
Expansion highlights7 records
Valar Atomics competitors and assessment
Company assessmentDirect peers
- Oklo: Oklo is a venture-backed advanced fission company developing compact fast reactors and microreactors for data centers and remote sites. Like Valar, it is also part of the DOE Reactor Pilot Program and Fuel Line Pilot Program, pursuing a similar AI data center and off-grid industrial customer base.
- X-energy: X-energy develops high-temperature gas-cooled reactors (Xe-100) using TRISO fuel. It is the closest technical analog to Valar's Numenor HTGR architecture and pursues similar industrial process heat and electricity applications, making it a direct HTGR technology peer.
- Last Energy: Last Energy is a venture-backed SMR developer focused on small pressurized reactors for industrial and data center customers. It was co-plaintiff with Valar in the suit against the NRC and is also pursuing off-grid deployment, making it a closely comparable small-modular-reactor peer.
- Radiant Industries: Radiant develops a portable high-temperature gas-cooled microreactor for remote and defense applications. It was also selected for the DOE Reactor Pilot Program and targets many of the same use cases as Valar's Ward 250.
- Aalo Atomics: Aalo Atomics is an early-stage sodium-cooled microreactor developer, also selected for the DOE Reactor Pilot Program with a goal of achieving criticality by July 4, 2026. It is a comparable microreactor peer targeting data center power.
- Terrestrial Energy: Terrestrial Energy develops the Integral Molten Salt Reactor (IMSR), a Gen IV advanced reactor. It was selected for both the DOE Reactor Pilot Program and Fuel Line Pilot Program, making it a direct advanced-reactor peer competing for similar industrial customer segments.
- Deep Fission: Deep Fission is an early-stage reactor developer that was also co-plaintiff with Valar in the NRC lawsuit and selected for the DOE Reactor Pilot Program. Its borehole-style reactor concept targets similar clean energy applications.
Broad incumbents
- TerraPower: TerraPower, founded by Bill Gates, is developing the Natrium sodium-cooled fast reactor and other advanced reactor technologies. As a well-capitalized Gen IV incumbent pursuing commercial deployment and fuel-cycle integration, it is a broad peer in advanced nuclear even though its technology is not HTGR.
- NuScale Power: NuScale is the most mature SMR developer in the U.S., with NRC-certified light-water SMR designs. It targets data center and utility customers and represents a broader SMR incumbent competing for the same end markets as Valar.
Emerging players
- Antares Nuclear: Antares Nuclear is an early-stage reactor company selected for the DOE Reactor Pilot Program alongside Valar. It is an emerging peer in advanced reactor development targeting similar nuclear power applications.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights7 records
Customer concentration
Valar Atomics social profiles
Digital presenceValar Atomics financial estimates
Financial estimateRevenue estimate
Valuation estimate
Valar Atomics leadership team
Management profileNumber of profiles
Profiles7 records
Valar Atomics subsidiaries and ownership
Company hierarchySubsidiaries1 record
Valar Atomics funding detail
Funding detailFunding overview
Funding rounds8 records
Investors31 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Valar Atomics M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Valar Atomics
What does Valar Atomics do?
Valar Atomics designs and manufactures High-Temperature Gas Reactor (HTGR) microreactors and small modular reactors using TRISO fuel, a graphite moderator, and helium coolant, deployed through its co-located "gigasite" manufacturing-deployment model. The company's core offerings are the Ward 250 5 MW air-transportable microreactor, the Ward Zero 1:1 thermal test prototype, and the Ward One 100 kWt test reactor, which produce grid-independent electricity, hydrogen, industrial process heat, and clean synthetic hydrocarbon fuels. Customers are industrial, government, and defense buyers seeking carbon-free baseload power outside the constraints of the traditional grid.
Is Valar Atomics a public or private company?
Valar Atomics is a private company. It is classified as venture growth investor backed and is currently operating.
When was Valar Atomics founded?
Valar Atomics was founded in 2023. It employs 11 to 50 people.
Where is Valar Atomics based?
Valar Atomics is headquartered in El Segundo, United States, in the North America region.
How does Valar Atomics make money?
Three revenue lines are on record. Small Modular Reactor Hardware Sales are the primary driver. The others are government Contracts / Test Reactor Sales and gigasite Power, Hydrogen, and Clean Fuel Offtake.
Who are Valar Atomics's main competitors?
Direct peers on record are Oklo, X-energy, Last Energy, Radiant Industries, Aalo Atomics, Terrestrial Energy and Deep Fission. Broad incumbents are TerraPower and NuScale Power. Antares Nuclear is listed as an emerging player.
Does Valar Atomics have an API?
No public API is recorded for Valar Atomics.
What industry is Valar Atomics in?
Valar Atomics's product category is Advanced Nuclear Energy Systems. Its primary akta.pro industry code is EUAKADAC, Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors), with a secondary code of EUACADAG, Microreactor Power Generation. Its NAICS code is 221113 and its SIC code is 4991.