STANDINGS
RANKED BY SCORE · LIVE DATA
10 COMPETITORS · DETAIL VIEW
THE FIELD
✓ZERO-POWER CRITICALITY ACHIEVED — NOVEMBER 2025
01
Valar Atomics
NOVA / Ward250 · High-Temperature Gas-Cooled
GAINING
85
/ 100 PTS
SELECTED
OTA
NSDA
PDSA
CONSTRUCTION
FDSA
CRITICALITY
POWER
TYPE
High-Temperature Gas-Cooled
SIZE
Sub-critical test / 250 kWe
FUEL
HALEU TRISO
SITE
Nevada Critical Experiments Research Center / Utah
HALEU
YES
FUEL SOURCED FROM: DOE HALEU Availability Program
VIEW SUPPLY CHAIN →02
Antares Nuclear
COMMITTED
Mark-0 · Sodium Heat Pipe Microreactor
GAINING
65
/ 100 PTS
SELECTED
OTA
NSDA
PDSA
CONSTRUCTION
FDSA
CRITICALITY
POWER
TYPE
Sodium Heat Pipe Microreactor
SIZE
500 kWt
FUEL
HALEU TRISO
SITE
Idaho National Laboratory
HALEU
YES
FUEL SOURCED FROM: DOE conditional commitment · Aug 2025
VIEW SUPPLY CHAIN →05
Oklo
2 PROJECTS
Aurora-INL · Sodium Fast Microreactor
GAINING
55
/ 100 PTS
SELECTED
OTA
NSDA
PDSA
CONSTRUCTION
FDSA
CRITICALITY
POWER
TYPE
Sodium Fast Microreactor
SIZE
75 MWe
FUEL
Metallic U-Zr (recycled EBR-II fuel)
SITE
Idaho National Laboratory
HALEU
NO
FUEL SOURCED FROM: Recycled EBR-II metallic fuel from INL
VIEW SUPPLY CHAIN →07
Terrestrial Energy
Project TETRA (IMSR) · Integral Molten Salt Reactor
NEUTRAL
25
/ 100 PTS
SELECTED
OTA
NSDA
PDSA
CONSTRUCTION
FDSA
CRITICALITY
POWER
TYPE
Integral Molten Salt Reactor
SIZE
195 MWe
FUEL
Low-enriched fluoride salt
SITE
TBD
HALEU
NO
FUEL SOURCED FROM: Fluoride salt — no HALEU dependency
VIEW SUPPLY CHAIN →10
Natura Resources
ACU Molten Salt Reactor · Molten Salt Research Reactor
NEUTRAL
10
/ 100 PTS
SELECTED
OTA
NSDA
PDSA
CONSTRUCTION
FDSA
CRITICALITY
POWER
TYPE
Molten Salt Research Reactor
SIZE
1 MWth
FUEL
HALEU fluoride salt
SITE
Abilene Christian University, TX
HALEU
YES
FUEL SOURCED FROM: DOE HALEU commitment to ACU
VIEW SUPPLY CHAIN →MILESTONE KEY
M1 SELECTED (+10)
M2 OTA (+15)
M3 NSDA (+15)
M4 PDSA (+20)
M5 CONSTRUCTION (+15)
M6 FDSA (+10)
M7 CRITICALITY (+10)
M8 POWER (+5)
SOURCE: DOE-NE · EO 14301 (May 2025) · DOE Reactor Pilot Program public announcements · OTA/NSDA/PDSA/FDSA stage data from DOE program office