Pilot Program · Reactor Profiles

ReactorProfiles

The reactor-physics fingerprint of every design in the pilot program — type, power, fuel, neutron spectrum, coolant, moderator, and core power density, side by side.

PROFILES
NOV 10 · 2026
← The Second Atomic Age

№	Company	Reactor	Reactor Type	Design Power	Operated Power	Fuel Enrichment	Fuel Form	Fuel Geometry	Coolant	Moderator	Spectrum	Power Density
01	Valar Atomics	Ward-250	HTGR	5 MWe	~100 kWt	HALEU	TRISO	Prismatic	Helium	Graphite	Thermal	3–8 MW/m³
02	Antares Nuclear	Mark-0	Heat Pipe	1 MWt	0	HALEU	TRISO	Prismatic	Sodium	Graphite	Thermal	1–15 MW/m³
03	Deployable Energy	Unity	GCWR	1 MWe	0	LEU	UO2 / MOX	Rods / Pins	Helium	Water	Thermal	8–30 MW/m³
04	Aalo Atomics	Aalo-X CTR	Sodium	30 MWt / 10 MWe	0	LEU / HALEU	UO2 / MOX	Rods / Pins	Sodium	Graphite	Thermal	20–80 MW/m³
05	Oklo Inc.	Groves	Pool LWR	100 We	0	LEU	UO2 / MOX	Rods / Pins	Water	Water	Thermal	50–105 MW/m³
06	Last Energy	PWR-5	PWR	80 MWt / 20 MWe	TBD	LEU	UO2 / MOX	Rods / Pins	Water	Water	Thermal	50–105 MW/m³
07	Radiant Industries	Kaleidos	HTGR	1 MWe	TBD	HALEU	TRISO	Prismatic	Helium	Graphite	Thermal	3–8 MW/m³
08	Oklo Inc.	Aurora	SFR	75 MWe	TBD	HALEU / Plutonium	Metallic	Rods / Pins	Sodium	None	Fast	50–250 MW/m³
09	Natura Resources	MSR-1	MSR	1 MWt	TBD	LEU / HALEU	FLiBe	Liquid	Molten Salt	Graphite	Thermal	1–15 MW/m³
10	Deep Fission	Gravity	PWR	15 MWe	TBD	LEU	UO2 / MOX	Rods / Pins	Water	Water	Thermal	50–105 MW/m³
11	Oklo Inc.	Pluto	SFR	—	TBD	HALEU / Plutonium	Metallic	Rods / Pins	Sodium	None	Fast	50–250 MW/m³
12	Terrestrial Energy	IMSR	MSR	822 MWt / 390 MWe	TBD	LEU / HALEU	FLiBe	Liquid	Molten Salt	Graphite	Thermal	10–30 MW/m³

Reading the Profiles

TYPEReactor class

The core architecture — e.g. HTGR, PWR, SFR, MSR, heat-pipe, or pool.

DESIGN POWERNameplate

Rated thermal / electrical output the unit is designed for.

OPERATED POWERAs run

Power actually reached so far — 0 if only zero-power criticality (ZPC) is done, TBD if not yet critical.

FUELThree dimensions

Enrichment (LEU / HALEU / Pu), form (TRISO, metal, oxide, salt), and geometry (prismatic, pebbles, rods, liquid).

SPECTRUMNeutron energy

Thermal reactors slow neutrons with a moderator; fast reactors do not.

COOLANTHeat transport

The fluid that carries heat out of the core — water, helium, sodium, or molten salt.

MOD.Moderator

Material that slows neutrons in a thermal reactor; None for fast reactors.

POWER DENSITYCore, thermal

Core-average MW_th per m³ (estimated range). Fast reactors pack the most; gas-cooled & heat-pipe designs run low — often a deliberate passive-safety choice, not a ceiling.