Molten salt reactors · Texas

Nuclear that
does more.

A reactor that's already been built and tested, brought to American soil. Texas Atomics is licensing a proven molten salt reactor for the U.S. — clean power that runs hotter, stays stable on its own, and can produce the isotopes used to treat cancer.

Why nuclear

The densest source of firm clean power we have.

// 24/7

Firm, around the clock

U.S. reactors run at roughly a 93% capacity factor — the highest of any energy source, and the steady baseload a reliable grid is built on.

// ENERGY DENSITY

One pellet, a ton of energy

A fingertip-sized uranium pellet releases about the energy of a ton of coal — enormous output from a land and fuel footprint a fraction of any alternative.

// ZERO

Zero carbon emissions

Generating electricity by fission releases no carbon dioxide — among the lowest lifecycle emissions of any energy source, clean energy at the scale the climate demands.

// SCALE

Built for rising demand

U.S. electricity demand is climbing for the first time in two decades, driven by data centers and electrification. Nuclear is the only carbon-free source that adds round-the-clock power at gigawatt scale.

The advantage

Better than a conventional reactor, on every axis.

Fuel ConventionalSolid rods that crack, swell, and must be replaced Molten saltFuel dissolved in flowing salt — nothing to fail or melt
Pressure ConventionalWater held at ~150 atmospheres in a heavy vessel Molten saltRuns at atmospheric pressure — simpler, lighter, cheaper to build
Heat Conventional~320°C — useful for electricity, little else Molten salt700°C drives turbines efficiently and powers industry directly
Stability ConventionalActively held in check by engineered systems Molten saltInherently stable — the liquid fuel expands and slows the reaction on its own
Siting ConventionalTied to coastlines and major rivers for cooling Molten saltCompact and air-coolable — built where the power is needed

Run the fuel as a liquid and a reactor can do far more than make electricity.

How it works

Three properties do the work.

01 / FUEL

Dissolve the fuel

Nuclear fuel is dissolved into a fluoride salt, so fuel and coolant become a single circulating liquid. There are no rods, cladding, or pellets that can crack, swell, or fail.

02 / HEAT

Run it hot

The salt circulates through the core at roughly 700°C — far hotter than a water reactor. That temperature drives turbines efficiently and can supply process heat to heavy industry directly.

03 / CONTROL

Let temperature govern it

As the fuel salt warms it expands and thins, which slows the reaction. This negative temperature feedback makes the reactor self-regulating rather than something that must be actively held in check.

Safe by nature

The off switch is gravity.

Many molten salt designs are anchored by a plug of frozen salt at the base of the core, kept solid by a simple cooling fan — one of the most elegant ideas in nuclear engineering.

If power is ever interrupted, the plug melts and the fuel settles by gravity into tanks shaped to hold it at rest. It happens on its own — no operator action, no pumps, no backup generators. Because the safety comes from the design itself, these reactors can be built smaller and closer to where the power is needed.

To make it safe, you don't add anything.
You take the power away.

● Operating · plug frozen
Mission

Proven decades ago.
Built for now.

The molten salt reactor is not a paper concept. It ran at Oak Ridge National Laboratory from 1965 to 1969, where the Molten-Salt Reactor Experiment logged thousands of hours of full-power operation and demonstrated the core idea — liquid fuel, low pressure, inherent stability. The physics held; federal funding consolidated around the light-water reactors already in commercial use, and the program was shelved. Sixty years later the demand for firm clean power is back — and for the first time, a modeling toolchain validated against a live reactor makes the design licensable.

Texas Atomics is a full-stack molten salt reactor developer. We combine reactor modeling — validated against a real operating reactor — with a proven hardware platform, and carry a reactor from design through licensing into operation.

Because the fuel is a liquid, the same reactor can also produce medical radioisotopes that can be used in targeted therapies that deliver radiation directly to cancer cells while largely sparing healthy tissue.

Our first project is a demonstration facility in central Texas, advancing through the U.S. Department of Energy's NRIC Nuclear Energy Launch Pad. Its purpose is to prove that Texas Atomics can license and operate this technology on American soil. See how our reactor works →

Our reactor

A proven core, brought home.

Rather than invent a power reactor from scratch, Texas Atomics is bringing Copenhagen Atomics' Onion Core® — a containerized molten salt reactor with roughly a decade of hardware testing behind it — to the United States under an a U.S. license, currently in advanced negotiation.

The partnership

Copenhagen Atomics builds the reactor. We bring it to the U.S.

Copenhagen Atomics has spent roughly a decade proving the Onion Core® — a containerized molten salt reactor with thousands of hours of salt-wetted hardware testing behind it. Texas Atomics' role is to bring that proven technology to American soil: securing the U.S. license, building and operating the reactor here, and standing as the domestic owner-operator that U.S. nuclear law requires.

The reactor is already built and tested. We bring it to America — and get it licensed.

The architecture

Built in layers, like an onion.

Instead of the bundles of solid fuel rods in a conventional reactor, the Onion Core® is built from nested layers wrapped around a center — an “onion.” Two liquids do two jobs: one salt makes the power, the other grows new fuel. From the inside out:

// LAYER 01

Heavy-water moderator core

An inner core of heavy water (D₂O) moderates neutrons, sitting near ambient temperature and atmospheric pressure.

// LAYER 02

Fuel-salt layer

LiF–UF₄ fuel salt — beryllium-free, with enriched lithium-7 — circulates here at roughly 600–700°C. This is where fission happens.

// LAYER 03

Heavy-water layer

A second D₂O layer wraps the fuel salt, shaping the neutron spectrum and carrying heat away from the core.

// LAYER 04

Thorium breeding blanket

An outer ThF₄ salt captures escaping neutrons and breeds new fuel.

Copenhagen Atomics Onion Core® reactor system
The containerized Onion Core® molten salt reactor system. Image courtesy of Copenhagen Atomics
Reactor 1

Our first build is a critical test facility.

Reactor 1 is a molten salt demonstration facility — no electrical output — planned to be located in central Texas. Its purpose is to prove that Texas Atomics can license and operate this technology on American soil, and to exercise the company's full-stack capability end to end.

// SELF-SUSTAINING

Runs on its own fission

The reactor's own fission keeps the salt molten — no external heaters, no power-conversion system, no pressurization.

// STANDARD FUEL

Runs on standard uranium

Fueled by low-enriched uranium that's commercially available today — dissolved into salt, with none of the costly fuel-rod fabrication a conventional reactor requires.

// ATMOSPHERIC

No pressurized systems

The heavy-water layers sit near ambient temperature. Stop fission and the salt simply freezes in place — the benign end state.

// PROVE IT OUT

Demonstrates the technology

Reactor 1 takes the design from paper to a running, licensed reactor — validating the modeling, the fuel, and the operations that the larger power reactors will be built on.

Where this goes

From a critical facility to firm clean power.

Reactor 1 proves the licensing and operating path. The same platform is designed to scale: Copenhagen Atomics' commercial Onion Core® is a 100 MWth reactor delivering firm, carbon-free power for the grid and for behind-the-meter industrial sites. Texas Atomics is built to be the U.S. owner-operator that deploys it here.

Because the fuel is a liquid, the same reactor can also produce medical isotopes: target material is dissolved into the salt and the isotope chemically separated from a side stream while the reactor runs, rather than through a fuel-rod fabrication, irradiation, and disassembly cycle.

About

From model to metal.

Texas Atomics pairs two capabilities that rarely sit in one company: reactor modeling validated against a real operating reactor, and a hardware platform with a decade of test data behind it. The team is built from the people who demonstrated each.

Dr. John Ross

Dr. John Ross

Founder & CEO · Computational nuclear engineering

Dr. Ross is a computational nuclear engineer and the technical foundation of Texas Atomics. Through the University of Texas at Austin's Digital Molten Salt Reactor Initiative, his doctoral work produced a validated digital twin of UT Austin's research reactor — a working demonstration that a molten-salt-relevant multiphysics model can be anchored to real reactor data and trusted as a basis for analysis and licensing.

He carries that capability directly into the company, where the same methods now model Texas Atomics' own reactor. It is the difference between a simulation a regulator must take on faith and a model proven against the reactor it describes. Dr. Ross leads technical direction, research partnerships, and capital formation.

Leadership & advisors

David Young

David Young, CPA, MBA

Chief Financial Officer · Corporate finance

A senior corporate-finance leader across the healthcare and life-sciences industries. He is currently SVP of Finance at Fagron, with prior CFO roles and senior finance leadership at St. Jude Medical, Thermo Fisher Scientific, and Cardinal Health. He owns financial management, the milestone-based funding structure, and investor relations.

Thompson Purvis

Thompson Purvis

VP, Business Development · Site & land

Principal at StoneCreek Capital Partners with deep commercial real-estate and land experience. He leads site control, commercial partnerships, and land development for the future fleet of molten salt reactors.

Two partners, one integrator

Texas Atomics runs lean and integrates two external groups, holding single-point accountability to its regulators across both.

University of Texas at Austin — the validated digital twin, independent physics verification, and experimental separations research, via sponsored research.

Copenhagen Atomics — the supplier of the Onion Core reactor.

Born in Texas · Built for the world