Abundant energy from Earth to the asteroid belt.
Abundant energy from Earth to the asteroid belt.
Abundant energy from Earth to the asteroid belt.
Fission microreactors to enable strategic energy for critical mission capabilities on earth, in space, and underwater.
R1 Microreactor
Purpose-designed modular power for defense-critical assets
100kWe - 1MWe for 4-6 years
01
Integrated Shielding & Transport Cradle
Cradle simplifies deployment with minimal gear.
02
Reactivity Controls
Graphite and boron carbide control drums with independent actuator motors, inspired by historical space reactor designs.
03
Core
TRISO coated particle fuel in prismatic graphite core.
04
Sodium Heat Pipes
Sodium heat pipes enable redundant high temperature entirely passive heat transfer.
05
Primary Heat Exchanger
Fin and tube heat exchanger.
06
Nitrogen Brayton Cycle
Simple recuperated N2 closed Brayton cycle enables efficient power conversion at < 300 psi. Low maintenance, low corrosion, leak resistant, and high reliability.
07
Power Management & Distribution
Electricity is conditioned through a power management and distribution node which can flexibly deliver power and connect to local microgrids.
ENGINEERING
Simple design optimized for reliability, uptime, and manufacturability
Simple design optimized for reliability, uptime, and manufacturability
Simple design optimized for reliability, uptime, and manufacturability
Capabilities
Vertically integrated supply chain
Vertically integrated supply chain
Vertically integrated supply chain
Special Purpose Reactors
We specialize in designing and manufacturing adaptable, scalable, mobile, and transportable reactors for strategic energy applications, including space-based nuclear power and propulsion and energy resilience for mission-critical facilities.
Special Purpose Reactors
We specialize in designing and manufacturing adaptable, scalable, mobile, and transportable reactors for strategic energy applications, including space-based nuclear power and propulsion and energy resilience for mission-critical facilities.
Special Purpose Reactors
We specialize in designing and manufacturing adaptable, scalable, mobile, and transportable reactors for strategic energy applications, including space-based nuclear power and propulsion and energy resilience for mission-critical facilities.
Heat Pipes & Thermal Management
Our expertise encompasses designing and developing high-temperature heat pipes and radiators, ensuring compact high-temperature thermal management.
Thermal Management
Our expertise encompasses designing and developing high-temperature heat pipes and radiators, ensuring compact high-temperature thermal management.
Thermal Management
Our expertise encompasses designing and developing high-temperature heat pipes and radiators, ensuring compact high-temperature thermal management.
Control Systems
Our team excels in design, build, and test of automated control systems, enabling hardware-in-the-loop digital twins.
Control Systems
Our team excels in design, build, and test of automated control systems, enabling hardware-in-the-loop digital twins.
Control Systems
Our team excels in design, build, and test of automated control systems, enabling hardware-in-the-loop digital twins.
Graphite Machining
We precision machine nuclear grade graphite in house.
Graphite Machining
We precision machine nuclear grade graphite in house.
Graphite Machining
We precision machine nuclear grade graphite in house.
Roadmap to Full Power
Roadmap to Full Power
Roadmap to Full Power
2025
Completed Conceptual Design Review with INL
Conducted Electrically-Heated Demonstration Unit tests at NASA’s Marshall Space Flight Center
Nuclear Safety Design Agreement (NSDA) approved by regulators
Fabricating HALEU feedstock into TRISO fuel for 2026-27 reactor testing
Manufacturing the first articles of the MARK-O test reactor
2026
Working with INL under DOE’s Reactor Pilot Program toward Antares’ first nuclear fission criticality demonstration – one of the first three reactors to go critical under Presidential executive orders.
2027
Demonstrate first-of-a-kind R1 reactor at full power with electricity production.
2025
Completed Conceptual Design Review with INL
Conducted Electrically-Heated Demonstration Unit tests at NASA’s Marshall Space Flight Center
Nuclear Safety Design Agreement (NSDA) approved by regulators
Fabricating HALEU feedstock into TRISO fuel for 2026-27 reactor testing
Manufacturing the first articles of the MARK-O test reactor
2026
Working with INL under DOE’s Reactor Pilot Program toward Antares’ first nuclear fission criticality demonstration – one of the first three reactors to go critical under Presidential executive orders.
2027
Demonstrate first-of-a-kind R1 reactor at full power with electricity production.
2025
Completed Conceptual Design Review with INL
Conducted Electrically-Heated Demonstration Unit tests at NASA’s Marshall Space Flight Center
Nuclear Safety Design Agreement (NSDA) approved by regulators
Fabricating HALEU feedstock into TRISO fuel for 2026-27 reactor testing
Manufacturing the first articles of the MARK-O test reactor
2026
Working with INL under DOE’s Reactor Pilot Program toward Antares’ first nuclear fission criticality demonstration – one of the first three reactors to go critical under Presidential executive orders.