Scalable Nuclear Power Beneath the Surface

A Scientific Breakthrough Decades in the Making

Deep Fission’s 15MWe Gravity Reactor (RX) combines pressurized water reactor (PWR) technology with deep borehole and geothermal engineering to deliver up to 80% cost savings and achieve rapid, six-month construction timelines. This hybrid design allows the reactor to be installed one mile underground, reducing surface footprint and increasing containment. Our innovative technology has become one of the biggest scientific breakthroughs in over five decades.

Technology United by Proven Science

We integrated technologies from three leading industries to deliver a powerful solution that streamlines containment, pressure management, and core cooling systems.

1 Deep Borehole Drilling

Used in the oil and gas industry, the advanced borehole design can be fully drilled using existing oil and gas infrastructure for safe and scalable underground containment. This reduces development costs and accelerates deployment timelines.

Geothermal methodology is used to facilitate an energy transfer, utilizing the earth’s natural heat sink properties for consistent results. This method ensures reliable thermal management while minimizing environmental impact.

Used in nuclear energy, this system achieves containment and safety without the need for complex mechanical structures due to the natural hydrostatic pressure from a water column one mile underground. The pressurized water reactor (PWR) operates efficiently using readily available low-enriched uranium (LEU) fuel.

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

We power scales 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 reactors (PWRs) fuel assemblies

Cooling: Water

Natural Containment: Utilize earth’s depths to provide essential pressure and safety, no above-ground containment structures

Water Disposal: Traditional spent fuel handling or permanent borehole storage for secure, long-term management

Levelized Cost of Energy (LCOE): $50-70/MWe

Construction Schedule: Six months

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 reactors (PWRs) fuel assemblies

Cooling: Water

Natural Containment: Utilize earth’s depths to provide essential pressure and safety, no above-ground containment structures

Water Disposal: Traditional spent fuel handling or permanent borehole storage for secure, long-term management

Levelized Cost of Energy (LCOE): $50-70/MWe

Construction Schedule: Six months

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 reactors (PWRs) fuel assemblies

Cooling: Water

Natural Containment: Utilize earth’s depths to provide essential pressure and safety, no above-ground containment structures

Water Disposal: Traditional spent fuel handling or permanent borehole storage for secure, long-term management

Levelized Cost of Energy (LCOE): $50-70/MWe

Construction Schedule: Six months

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 15 MWe of reliable power, with modular scalability that can expand beyond 1 GWe 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.

Natural Containment

We leverage the earth’s natural depth and pressure to ensure safety, stability, and long-term containment.

Waste Disposal

Used fuel is disposed of through conventional handling methods or securely stored in deep boreholes, providing a sustainable waste solution.

Rapid Growth from First Reactor to Full Operation

1

Reactor produces 15MWe to power small commercial buildings, military, and remote locations

10

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

100

Reactors produce 1.56We to power hyperscale data centers and large power plants