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Aalo Atomics

Factory-Built Nuclear Reactors for AI Data Centers

Aalo Atomics is an Austin-based nuclear startup building factory-manufactured modular reactors purpose-built to power AI data centers. Founded in 2023 by CEO Matt Loszak and CTO Yasir Arafat — the former lead of the Department of Energy's MARVEL microreactor program at Idaho National Laboratory — the company achieved first criticality for its Aalo-X experimental reactor at 12:20 a.m. on July 4, 2026, meeting the deadline set by Executive Order 14301. Founding to criticality: under three years. Total funding: over $136 million raised, with a ~$500 million Series C reportedly in negotiation at a $4–5 billion valuation as of late July 2026. The company employs approximately 200 people and is expanding from its 40,000-square-foot Austin headquarters off Texas 71 into up to 810,000 square feet of manufacturing space in Georgetown.

The thesis is datacenter power. Terrestrial AI compute is grid-constrained — the same constraint that ITS documents across the Austin Supercluster and that SpaceX's AI1 orbital compute program addresses from orbit. Aalo addresses it from the ground: a 50 MWe nuclear plant that installs in months, requires no water cooling, produces no carbon emissions, and runs on commercially available low-enriched uranium. Target power cost: 3¢/kWh.

Product Line

Product	Output	Description	Status
Aalo-X	10 MWe	Experimental extra modular reactor (XMR) at Idaho National Laboratory, next to the Materials and Fuels Complex. Sodium-cooled, UO₂-fueled. Validates reactor physics, control systems, supply chain, and fueling procedures at commercial scale. Will produce electricity and power an on-site data center in 2027	Criticality achieved July 4, 2026. First advanced reactor capable of producing power built in the US in over a generation
Aalo-1	10 MWe	Commercial version of the Aalo-X reactor. Factory-built, sodium-cooled, uses proven low-enriched uranium dioxide fuel. Designed for assembly-line manufacturing — the reactor is not constructed on-site but manufactured in a factory and shipped as completed modules	Commercial product; production ramp tied to Georgetown factory buildout
Aalo Pod	50 MWe	Fully modular nuclear plant clustering five Aalo-1 reactors. Purpose-built for AI data centers. Designed to install in months rather than years. The whole internals are inserted into a large vessel of liquid metal (sodium), which carries heat to a turbine to produce electricity	First commercial product; mass production is the target

The design philosophy is manufacturing-first. Aalo-1 reactors are not built on-site like traditional nuclear plants — they are factory-manufactured as standardized modules, shipped to the customer site, and assembled. Loszak: "The whole internals would be inserted into a big tub of liquid metal. That liquid metal carries heat away to turn a turbine and produce electricity." The sodium coolant eliminates the water dependency that constrains conventional nuclear and that the Austin-area datacenter buildout is increasingly competing for.

The Energy Constraint Thesis

Aalo exists because of the same constraint that drives three of the major themes in Inside the Singularity: AI compute is power-grid-constrained, and the constraint is most acute in Texas — the #1 datacenter market in the world. The Austin-area datacenter buildout (Meta Temple, Rowan Temple, the Georgetown-Hutto-Taylor corridor, the Bastrop County cluster including Anthropic at Cedar Creek) is competing for ERCOT grid capacity, water, gas turbine permitting, and interconnection queue positions that are all tightening simultaneously.

Three responses to that constraint are now being built in the same Texas Triangle corridor:

Response	Operator	Location	Mechanism
Move compute off-surface	SpaceX AI1 / Gigasat Factory	Bastrop County (manufacturing); LEO (deployment)	Orbital compute — continuous solar power, vacuum cooling, no grid interconnection
Bring power to the datacenter	Aalo Atomics	Georgetown (manufacturing); customer sites (deployment)	50 MWe modular nuclear plants — no water, no carbon, no grid dependency, installs in months
Build the turbines	SpaceX / Tesla — Bastrop gas turbine facility	Bastrop County	Gas turbine blade and vane fabrication — vertical integration into power generation hardware

All three responses are being manufactured within 40 miles of each other in the Texas Triangle. The energy constraint is not a background condition — it is the forcing function that is generating the next wave of industrial investment in the corridor, and Aalo's Georgetown factory is one of the three physical expressions of the response.

Cross-Anchor Position

Aalo's Georgetown expansion places the company directly in the Williamson County industrial corridor alongside Samsung Taylor (semiconductor fabrication), the Georgetown-Hutto-Taylor Datacenter Corridor, and the broader I-35 defense-industrial spine. CrossPoint Business District on I-35 provides the same freight and workforce access that serves the corridor's semiconductor and datacenter operators.

The NRG Energy participation in the Series B is a direct link to the Texas energy grid — NRG is one of the largest power generators in Texas. The Hitachi Ventures participation connects to the broader nuclear supply chain (Hitachi-GE Nuclear Energy is a major reactor vendor). The Urenco fuel supply contract — commercially available 5% LEU, scalable to gigawatt deployment — means Aalo's reactor fleet does not depend on the high-assay low-enriched uranium (HALEU) supply chain that constrains several competing advanced reactor designs.

The Aalo-to-datacenter pipeline is circular within the Texas Triangle: Aalo builds reactors in Georgetown → reactors power datacenters in the Austin-area corridor → datacenters run AI compute → AI compute drives the demand that justifies the next reactor order. The ERCOT grid constraint is what makes the loop spin — every megawatt of datacenter demand that ERCOT cannot serve at the speed operators require is a megawatt of addressable market for an Aalo Pod.

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