Proven Technology. Deployment Ready.
The ARC-100 is not a concept reactor. It is the commercial evolution of EBR-II, a sodium-cooled fast reactor that operated successfully for 30 years at Idaho National Laboratory. Generation IV technology, validated by three decades of data, engineered for deployment today.
It holds the most advanced regulatory position of any Generation IV advanced small modular reactor in Canada, with CNSC Vendor Design Review Phase II complete, a License to Prepare Site application submitted and preliminary design finalized.
Sodium. Fast Neutrons. A Fundamentally Better Reactor.
Sodium Coolant Advantage
Liquid sodium operates at atmospheric pressure and boils at 883 °C, giving the ARC-100 a significant safety margin. There is no high-pressure water and no pressure vessel failures. Sodium's thermal conductivity is roughly 100 times that of water, enabling a compact core and exceptional heat transfer efficiency.
Metallic Fuel
Unlike the ceramic oxide fuel used in most reactors, the ARC-100 uses a metallic uranium-zirconium alloy. Metallic fuel has superior thermal conductivity, tolerates higher burnup, and enables the passive safety mechanisms that define the ARC-100's operational capabilities.
Fast Neutron Spectrum
Fast neutrons breed new fissile material from fertile isotopes and transmute long-lived waste into short-lived products. Subject to regulatory approval, this process enables a future closed fuel cycle designed to achieve 99% fuel utilization, ultimately allowing the ARC-100 to consume what conventional reactors leave behind.
Passive Safety
In any loss-of-power or loss-of-cooling scenario, the reactor shuts itself down through natural physics: thermal expansion of the fuel and coolant inserts negative reactivity, and natural convection of the sodium removes decay heat indefinitely. No operator action. No backup diesel generators. No external power. The laws of physics are the safety system.
30 Years of Proof. Validated Performance.
The Experimental Breeder Reactor II (EBR-II) operated at Idaho National Laboratory from 1964 to 1994. Over three decades, it generated electricity, proved the viability of metallic fuel, demonstrated passive safety in live tests, and pioneered the sodium-cooled fast reactor concept that the ARC-100 commercializes.
In 1986, EBR-II operators deliberately induced both a loss-of-flow and loss-of-heat-sink accident with the reactor at full power. The reactor shut itself down. No damage. No release. No intervention. This was not a simulation. It was a live demonstration of inherent safety that no other reactor type has replicated.
ARC Clean Technology is not inventing new science. We are commercializing proven science. The fundamental engineering of the ARC-100 is backed by empirical data from 30 years of successful operation. The technology risk that plagues other advanced reactor programs simply does not exist here.
Engineered to Outperform Every Alternative.
The ARC-100 does not compromise. It is safer than conventional nuclear, cleaner than renewables on a lifecycle basis, more reliable than gas, and more compact than any of them. Six fundamental advantages set it apart.
Inherent Safety
The ARC-100 cannot melt down. Sodium coolant operates at atmospheric pressure, and the reactor shuts itself down through the laws of physics alone. No operator action, no backup systems, no external power required.
99% Fuel Utilization
On a closed fuel cycle, the ARC-100 extracts virtually all available energy from its fuel. Today's reactors use less than 10%. This means dramatically less waste and centuries of fuel supply from existing stockpiles.
Compact Footprint
A single ARC-100 fits on a city block. That makes co-location with data centers, industrial facilities, and urban grids not just possible but practical. Safety boundaries contained to the site perimeter. No remote siting constraints.
Rapid Construction
Factory-assembled modules arrive on site ready for installation. The rapid construction schedule compresses a decade-long nuclear timeline into something that matches the pace of data center buildouts.
True Load Following
Unlike conventional nuclear plants locked into baseload mode, the ARC-100 ramps output to match demand in real time. Pair it with renewables or fluctuating industrial loads without curtailment.
Waste Reduction
The fast neutron spectrum transmutes long-lived actinides into short-lived fission products. The result is waste that requires centuries of storage, not millennia.
The Technology Is Proven. The Timeline Is Now.
Whether you are scoping a data center, replacing a retiring fossil plant, or evaluating industrial heat, our project development team can deliver a preliminary site assessment.
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