Aalo-1 Reactor
A nuclear power reactor under development as a module for Aalo’s planned power plants.
Maturity not rated
Startup · United States
Aalo Atomics
HQ AustinFounded 2022201-500 employees
Aalo Atomics is pioneering the future of clean energy by developing factory-manufactured, small-scale nuclear reactors designed to provide safe, reliable, and cost-effective power. Their mission is to achieve electricity production at 3¢ per kWh, making nuclear energy an affordable cornerstone of global clean energy solutions. The company's flagship product, the Aalo Pod, is a 50 MWe power plant tailored for data centers, addressing the growing energy demands of the digital age. With a strong emphasis on modularity and simplified safety systems, Aalo's reactors are engineered for rapid on-site assembly and optimal economics, positioning them to revolutionize the energy sector.
Funding4 rounds · $133M
- Equity raised
- $133M
- Latest
- UndisclosedSeries B · May 25, 2026
- Last valuation
- $443MPost-money · Series B · Aug 19, 2025
Apr 6, 2023Aug 19, 2025
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| May 25, 2026 | Series B | Undisclosed | — | — | Climate Capital | Speculative |
| Aug 19, 2025 | Series B | $100M | $443M | Valor Equity Partners | Alumni Ventures, Crosscut Ventures, Fifty Years, Gaingels, Harpoon Ventures, Hitachi Ventures, Kindred Ventures, Nucleation Capital | Confirmed |
| Aug 14, 2024 | Series A | $27.0M | — | Fifty Years, Valor Equity Partners | Alumni Ventures, Crosscut Ventures, Harpoon Ventures | Confirmed |
| Apr 6, 2023 | Seed | $6.3M | — | Fifty Years | Valor Equity Partners | Confirmed |
- UndisclosedMay 25, 2026
- Series BLed by Valor Equity PartnersWith Alumni Ventures, Crosscut Ventures, Fifty Years, Gaingels, Harpoon Ventures, Hitachi Ventures, Kindred Ventures, Nucleation CapitalValuation $443MConfirmed$100MAug 19, 2025
- $27.0MAug 14, 2024
- $6.3MApr 6, 2023
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems2
Aalo Pod
A modular nuclear power-plant product under development for supplying electricity to data centers.
Maturity not rated
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Capabilities1
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Microreactors | Developer | Prototype | — | Critical Test Reactor (Aalo-X campus, INL) reached zero-power criticality on 2026-07-04. | Reported |
- DeveloperCritical Test Reactor (Aalo-X campus, INL) reached zero-power criticality on 2026-07-04.PrototypeReported
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
Sources15
Show all 15 sources and supporting evidence
Profile3
- 1
Aalo Atomics · Supports Organization · name
“#3: Matt Loszak | Aalo Atomics’ Innovative Approach to Next-Gen Nuclear Deployment”
- 2
Black Flag · Supports Organization
“Pioneering mass-manufactured, modular nuclear power plants using advanced sodium-graphite reactor technology to deliver affordable, reliable, and scalable”
- 3
LinkedIn · Supports Organization · employee range
“employee_range: 201-500 (profile: 201-500 employees)”
Systems2
- 4
Aalo Atomics · Supports System
“Aalo-1 Reactor](#reactor) [Aalo Pod](#aalo-pod) Reactor Output 30 MWt / 10 MWe Type Sodium Thermal Fuel UO₂ Ceramic Design Constraint Transportable by truck 10 MWe of nuclear electricity - enough to power 10,000 homes. And it fits on the back of a truck”
- 5
Aalo Atomics · Supports System
“The Aalo Pod is a rapidly deployable 50 MWe power plant for AI compute. Comprised of factory-manufactured modules that fit on the back of the truck.”
Technologies1
- 6
World Nuclear News · Jul 7, 2026 · Supports Organization technology
“Aalo Atomics announced that its Critical Test Reactor at the Idaho National Laboratory successfully achieved initial criticality in the early hours of Saturday morning, becoming the fourth microreactor under US Department of Energy authorisation to achieve the milestone by 4 July 2026.”
Funding8
- 7
TechCrunch · Aug 19, 2025 · Supports Funding round
“The Series B round was led by Valor Equity Partners”
- 8CompanyAalo Closes $100M Series B
Aalo Atomics · Aug 19, 2025 · Supports Funding round · amount
“We are excited to announce that Aalo has closed a $100M Series B financing led by Valor Equity Partners”
- 9
Aalo Atomics · Aug 14, 2024 · Supports Funding round · amount
“Investors are backing us with $27M to accelerate our vision”
- 10
Medium (Matt Loszak, Aalo CEO) · Apr 11, 2023 · Supports Funding round, Funding round · amount
“The round was led by Fifty Years, a deep-tech VC firm based in San Francisco, with participation by Valor Equity Partners”
- 11
BetaKit · Supports Funding round
“The round was co-led by pre-seed and seed focused VC firm Fifty Years and SpaceX backer Valor Equity Partners, with participation from Harpoon Ventures, Crosscut, SNR, and Alumni Ventures, among others.”
- 12
CB Insights · Supports Funding round
“Aalo Atomics's latest funding round was a Series B - II for on May 25, 2026.”
- 13
Forge Global · Supports Funding round · post money valuation usd
“08/19/2025 Series B $100M $14.38 $442.57M”
- 14
PitchBook · Supports Funding round
“4. Early Stage VC (Series B1) | 31-Jul-2026”
People1
- 15OtherBlack Flag 100
Black Flag · Supports Organization, Role
“Aalo Atomics is pioneering the future of clean energy by developing factory-manufactured, small-scale nuclear reactors designed to provide safe, reliable, and”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.