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Deep Fission Gravity Nuclear Reactor™

Established Nuclear Technology, Deployed in a New Way.

Deep Fission’s Gravity Nuclear Reactor technology taps into one of nature’s most reliable forces intended to support safety functions, reduce surface infrastructure, and enable more repeatable deployment.

Integrating Three Established Technologies

An approach that enables the use of off-the-shelf components, existing supply chains, and readily available low-enriched uranium (LEU) fuel.

Gravity Well Drilling Oil & Gas

Developing advanced deep borehole drilling using standard infrastructure for containment one mile underground.

Novel deployment approach applies proven geothermal components and processes for energy transfer to the turbine generator at the surface.

Hydrostatic pressure from one-mile-deep column of water provides 160 atm of reliable pressure, safely and naturally.

Cross-section diagram showing integration among Gravity Well Drilling, Heat Exchanger, and Reactor Canister (PWR) elements 

Light-water reactors have been deployed commercially for decades, generating about 20% of our nation's electrical use.

Source: NRC

Adaptable Energy Designed to
Meet Any Demand

Our modular reactors are engineered for flexible deployment across a wide range of environments, from industrial hubs to remote locations. Each environment provides dependable and scalable power while supporting industries, communities, and critical infrastructure. 

Tech & Energy

Up to 100 reactors on one single site for hyperscale data centers and large power plants.

Power Output: 300 MWe - 1.5+ GWe

Borehole Reactors: 20-100+

Fuel and Refueling: Low Enriched Uranium (LEU) using four standard pressurized water reactor (PWR) fuel assemblies

Cooling: Water

Containment: Geological isolation at depth naturally provides operational pressures, enhances safety, and protects the public; no large, above-ground containment structures needed

Spent Fuel Storage: Conventional spent fuel handling; passive, reliable cooling; secure, long-term pool storage and management

Construction Schedule: Estimated six months per reactor

Commercial/Industrial

We power large commercial or industrial operations and data centers

Power Output: 150 MWe - 285 MWe

Borehole Reactors: 10-19

Fuel and Refueling: Low Enriched Uranium (LEU) using four standard pressurized water reactor (PWR) fuel assemblies

Cooling: Water

Containment: Geological isolation at depth naturally provides operational pressures, enhances safety, and protects the public; no large, above-ground containment structures needed

Spent Fuel Storage: Conventional spent fuel handling; passive, reliable cooling; secure, long-term pool storage and management

Construction Schedule: Estimated six months per reactor

Military/Remote Locations

We power remote military locations or small commercial operations.

Power Output: 15 MWe - 135 MWe

Borehole Reactors: 1-9+

Fuel and Refueling: Low Enriched Uranium (LEU) using four standard pressurized water reactor (PWR) fuel assemblies

Cooling: Water

Containment: Geological isolation at depth naturally provides operational pressures, enhances safety, and protects the public; no large, above-ground containment structures needed

Spent Fuel Storage: Conventional spent fuel handling; passive, reliable cooling; secure, long-term pool storage and management

Construction Schedule: Estimated six months per reactor

Engineering Simplicity for an Energetic Impact

Each component that makes up our technology has been purposely engineered to build one of the most impactful solutions in nuclear power to date.

Deep Pressurized Water Reactor

Our advanced pressure water reactor (PWR) utilizes 2x2 and 3x3 standard fuel assemblies with readily available low-enriched uranium (LEU) fuel. By relying on established reactor technology, the Deep PWR design ensures efficiency, passive safety, and secure containment.

Deep Geo Vault

The Deep Geo Vault uses standard borehole drilled with existing oil and gas technology to create a secure, underground containment system. This naturally shielded underground vault enhances safety, reduces surface impact, and minimizes costly mega-structures.

Deep Geothermal

The Deep Geothermal steam generator harnesses conventional geothermal technology to change subsurface heat into clean and consistent power efficiently. This integration of geothermal principles and nuclear engineering maximizes energy transfer and creates a natural emergency core cooling system.

Underground Advantages for Above Ground Success

Scalable Power

Each reactor delivers up to 15 MWe of reliable power, with modular scalability that can expand with additional boreholes to meet growing energy demands.

Standard Fuel

The design of the reactors utilizes low-enriched uranium (LEU) technology using 2x2 and 3x3 pressurized water reactor (PWR) fuel assemblies for consistent performance.

Containment

Geological isolation at depth naturally provides operational pressures, enhances safety, and protects the public; no large, above-ground containment structures needed.

Spent Fuel

Encompasses safe interim storage pending identification of national, long-term storage solutions.

Rapid Growth from First Reactor to Full Operation

1

Reactor expected to produce up to 15MWe to power small commercial buildings, military, and remote locations

10

Reactors expected to produce 150MWe to power medium to large data centers, and large commercial buildings

100

Reactors expected to produce 1.5GWe to power hyperscale data centers and large power plants