Open-source reactor intelligence

The SMR database

Structured data on every small modular reactor in development worldwide. Technical specs, licensing status, deployment timelines — queryable, comparable, open.

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134
Reactor Designs
19
Countries
6
Coolant Types
5
Under Construction

134 Reactor Designs

Every SMR in development worldwide — scrolling live

4S
Japan · 10 MWe · Metal-cooled
Toshiba
A-HTR-100
South Africa · 35 MWe · Gas-cooled
Eskom
ABV-6E
Russia · 9 MWe · Water-cooled
OKBM Afrikantov
ABV-6M
Russia · 9 MWe · Water-cooled
OKBM Afrikantov
ACP100
China · 125 MWe · Water-cooled
CNNC (NPIC)
ACP100S
China · 125 MWe · Water-cooled
CNNC
ACPR100
China · 140 MWe · Water-cooled
CGN
ACPR50S
China · 60 MWe · Water-cooled
CGN
AHWR-300 LEU
India · 300 MWe · Water-cooled
BARC
Allseas HTGR
Netherlands · 25 MWe · Gas-cooled
Allseas Engineering B.V.
AMR
South Africa · 3 MWe · Gas-cooled
STL Nuclear
Antares – SC-HTGR
France · 285 MWe · Gas-cooled
AREVA
AP300
USA · 330 MWe · Water-cooled
Westinghouse
ARC-100
Canada · 100 MWe · Metal-cooled
ARC Clean Technology
Aurora Powerhouse
USA · 75 MWe · Metal-cooled
Oklo
BANDI-60
South Korea · 60 MWe · Water-cooled
KEPCO E&C
Blossom Energy SMR
Japan · · Gas-cooled
Blossom Energy
Blue Capsule
France · 50 MWe · Metal-cooled
Blue Capsule Technology
BREST-OD-300
Russia · 300 MWe · Metal-cooled
NIKIET
BWRX-300
USA · 300 MWe · Water-cooled
GE Hitachi
CAL-30
France · 0 MWe · Water-cooled
Calogena
CAP150
China · 150 MWe · Water-cooled
SNERDI
CAP200 / LandStar-V
China · 200 MWe · Water-cooled
SNERDI
CAP50
China · 40 MWe · Water-cooled
SNERDI
CAREM25
Argentina · 32 MWe · Water-cooled
CNEA
CMSR
Denmark · 100 MWe · Molten salt cooled
Saltfloss Energy
Copenhagen Atomics Waste Burner
Denmark · 42 MWe · Molten salt cooled
Copenhagen Atomics
DEER
USA · 1 MWe · Gas-cooled
Radiant
DF300
Canada · 300 MWe · Metal-cooled
Dual Fluid Energy
DFBR-1
USA · 15 MWe · Water-cooled
Deep Fission
DHR400
China · 0 MWe · Water-cooled
CNNC
ELENA
Russia · 0.7 MWe · Water-cooled
Kurchatov Institute
Elysium MCSFR
USA · 50 MWe · Molten salt cooled
Elysium Industries
EM2
USA · 265 MWe · Gas-cooled
General Atomics
Energy Well
Czech Republic · 8 MWe · Gas-cooled
Czech Technical University
ENHS
USA · 50 MWe · Metal-cooled
UC Berkeley
eVinci
USA · 5 MWe · Heat pipe-cooled
Westinghouse
FLEX
UK · 24 MWe · Molten salt cooled
MoltexFLEX
Flexblue
France · 160 MWe · Water-cooled
Naval Group
Flibe LFTR
USA · 250 MWe · Molten salt cooled
Flibe Energy
FMR
USA · 44 MWe · Gas-cooled
General Atomics
FUJI
Japan · 200 MWe · Molten salt cooled
IThEMS
Gen4 module
USA · 25 MWe · Metal-cooled
Gen4 Energy
GT-MHR
Russia · 288 MWe · Gas-cooled
OKBM Afrikantov
GTHTR300
Japan · 200 MWe · Gas-cooled
JAEA
Halo 10
USA · 10 MWe · Water-cooled
Hadron Energy
HAPPY200
China · 0 MWe · Water-cooled
SPIC
HECTAR
South Korea · 0 MWe · Gas-cooled
KAERI
Hermes 2
USA · 50 MWe · Molten salt cooled
Kairos Power
Hermes demonstration plant
USA · 20 MWe · Molten salt cooled
Kairos Power
HEXANA
France · 150 MWe · Molten salt cooled
HEXANA
Holos Mono
USA · 10 MWe · Gas-cooled
HolosGen
Holos Quad
USA · 10 MWe · Gas-cooled
HolosGen
HTGR-POLA
Poland · 11.5 MWe · Gas-cooled
NCBJ
HTMR100
South Africa · 35 MWe · Gas-cooled
Stratek Global
HTR-PM
China · 105 MWe · Gas-cooled
INET/Tsinghua University
HTR50S
Japan · 17.2 MWe · Gas-cooled
JAEA
HTTR
Japan · 0 MWe · Gas-cooled
JAEA
i-SMR
South Korea · 170 MWe · Water-cooled
KAERI
IMSR400
Canada · 195 MWe · Molten salt cooled
Terrestrial Energy
JIMMY
Czech Republic · 1.5 MWe · Molten salt cooled
Jimmy Energy
KARAT-100
Russia · 100 MWe · Water-cooled
NIKIET
KARAT-45
Russia · 45 MWe · Water-cooled
NIKIET
KLT-40S
Russia · 35 MWe · Water-cooled
OKBM Afrikantov
KP-FHR
USA · 140 MWe · Molten salt cooled
Kairos Power
KRONOS MMR
USA · 15 MWe · Gas-cooled
NANO Nuclear Energy
LDR-50
Finland · 0 MWe · Water-cooled
Steady Energy
Leadir-PS100
Canada · 36 MWe · Metal-cooled
Northern Nuclear
LEUNR
Canada · 0 MWe · Water-cooled
Canadian Space Mining Corporation
LFR-AS-200
France · 200 MWe · Metal-cooled
newcleo
LFR-AS-30
France · 30 MWe · Metal-cooled
newcleo
LFR-TL-30
France · 30 MWe · Metal-cooled
newcleo
LOKI MMR
USA · 1.5 MWe · Gas-cooled
NANO Nuclear Energy
LSPR
Japan · 53 MWe · Metal-cooled
Tokyo Institute of Technology
MARVEL Research Microreactor
USA · 0.02 MWe · Metal-cooled
INL/DOE
MHR-100
Russia · 50 MWe · Gas-cooled
OKBM Afrikantov
MicroURANUS
South Korea · 20 MWe · Metal-cooled
MicroURANUS Corp.
Mini Fuji
Japan · 4 MWe · Molten salt cooled
IThEMS
MMR-10
USA · 10 MWe · Gas-cooled
Ultra Safe Nuclear Corporation
MMR-5
USA · 5 MWe · Gas-cooled
Ultra Safe Nuclear Corporation
MN-1
USA · 0.35 MWe · Gas-cooled
MobileNuclear Energy
Moltex SSR-Th
UK · · Molten salt cooled
Moltex Energy
Moltex SSR-W
UK · 300 MWe · Molten salt cooled
Moltex Energy
MoveluX
Japan · 3 MWe · Gas-cooled
Toshiba
mPower
USA · 195 MWe · Water-cooled
BWXT
MSR-1
USA · 0.4 MWe · Molten salt cooled
Natura Resources
MSR-100
USA · 100 MWe · Molten salt cooled
Natura Resources
Natrium
USA · 345 MWe · Metal-cooled
TerraPower
NHR200-II
China · 0 MWe · Water-cooled
INET/Tsinghua University
Nuclearis N1
USA · 17 MWe · Water-cooled
Nuclearis Energy
Nuscale micro
USA · 1 MWe · Water-cooled
NuScale Power
NuScale Power Module
USA · 77 MWe · Water-cooled
NuScale Power
NUWARD
France · 170 MWe · Water-cooled
EDF
ODIN
USA · 2 MWe · Molten salt cooled
NANO Nuclear Energy
Otrera
France · 110 MWe · Molten salt cooled
Otrera New Energy
PB-FHR
USA · 100 MWe · Molten salt cooled
UC Berkeley
PBMR-400
South Africa · 165 MWe · Gas-cooled
PBMR (Pty)
PeLUIt/RDE
Indonesia · 3 MWe · Gas-cooled
BATAN
PHWR-220
India · 220 MWe · Water-cooled
NPCIL
PRISM
USA · 311 MWe · Metal-cooled
GE Hitachi
PWR-20
USA · 20 MWe · Water-cooled
Last Energy
R1
USA · 0.3 MWe · Heat pipe-cooled
Antares Nuclear
Rapid-L
Japan · 0.2 MWe · Metal-cooled
CRIEPI
RITM-200M
Russia · 50 MWe · Water-cooled
OKBM Afrikantov
RITM-200N
Russia · 55 MWe · Water-cooled
OKBM Afrikantov
RITM-200S
Russia · 50 MWe · Water-cooled
OKBM Afrikantov
Rolls-Royce SMR
UK · 470 MWe · Water-cooled
Rolls-Royce
RUTA-70
Russia · 0 MWe · Water-cooled
NIKIET
SALUS-100
South Korea · 100 MWe · Molten salt cooled
KAERI
SEALER-55
Sweden · 3 MWe · Metal-cooled
LeadCold
SHELF-M
Russia · 6.6 MWe · Water-cooled
NIKIET
SMART
South Korea · 107 MWe · Water-cooled
KAERI
SMR-300
USA · 366 MWe · Water-cooled
Holtec International
SSR-U
UK · 16 MWe · Molten salt cooled
Moltex Energy
SSTAR
USA · 20 MWe · Metal-cooled
ANL
STAR
USA · 10 MWe · Metal-cooled
ANL
STAR-H2
USA · 175 MWe · Metal-cooled
ANL
STAR-LM
USA · 100 MWe · Metal-cooled
ANL
Starcore
Canada · 14 MWe · Gas-cooled
Starcore Nuclear
START
Switzerland · 220 MWe · Metal-cooled
Transmutex
Stellarium
France · 250 MWe · Molten salt cooled
Stellaria
SVBR-100
Russia · 100 MWe · Metal-cooled
AKME-Engineering
TEPLATOR
Czech Republic · 0 MWe · Water-cooled
UWB & CIIRC CTU
Thorcon TMSR
USA · 250 MWe · Molten salt cooled
ThorCon
THORIZON
Netherlands · 100 MWe · Molten salt cooled
Thorizon
TMSR-SF
China · 2 MWe · Molten salt cooled
Shanghai Institute of Applied Physics
U-Battery
UK · 4 MWe · Gas-cooled
Urenco
UNITHERM
Russia · 6.6 MWe · Water-cooled
NIKIET
VBER-300
Russia · 325 MWe · Water-cooled
OKBM Afrikantov
VK-300
Russia · 250 MWe · Water-cooled
NIKIET
Westinghouse LFR
USA · 450 MWe · Metal-cooled
Westinghouse
XAMR
France · 40 MWe · Molten salt cooled
Naarea
Xe-100
USA · 80 MWe · Gas-cooled
X-energy
XENITH
USA · 5 MWe · Gas-cooled
X-energy
4S
Japan · 10 MWe · Metal-cooled
Toshiba
A-HTR-100
South Africa · 35 MWe · Gas-cooled
Eskom
ABV-6E
Russia · 9 MWe · Water-cooled
OKBM Afrikantov
ABV-6M
Russia · 9 MWe · Water-cooled
OKBM Afrikantov
ACP100
China · 125 MWe · Water-cooled
CNNC (NPIC)
ACP100S
China · 125 MWe · Water-cooled
CNNC
ACPR100
China · 140 MWe · Water-cooled
CGN
ACPR50S
China · 60 MWe · Water-cooled
CGN
AHWR-300 LEU
India · 300 MWe · Water-cooled
BARC
Allseas HTGR
Netherlands · 25 MWe · Gas-cooled
Allseas Engineering B.V.
AMR
South Africa · 3 MWe · Gas-cooled
STL Nuclear
Antares – SC-HTGR
France · 285 MWe · Gas-cooled
AREVA
AP300
USA · 330 MWe · Water-cooled
Westinghouse
ARC-100
Canada · 100 MWe · Metal-cooled
ARC Clean Technology
Aurora Powerhouse
USA · 75 MWe · Metal-cooled
Oklo
BANDI-60
South Korea · 60 MWe · Water-cooled
KEPCO E&C
Blossom Energy SMR
Japan · · Gas-cooled
Blossom Energy
Blue Capsule
France · 50 MWe · Metal-cooled
Blue Capsule Technology
BREST-OD-300
Russia · 300 MWe · Metal-cooled
NIKIET
BWRX-300
USA · 300 MWe · Water-cooled
GE Hitachi
CAL-30
France · 0 MWe · Water-cooled
Calogena
CAP150
China · 150 MWe · Water-cooled
SNERDI
CAP200 / LandStar-V
China · 200 MWe · Water-cooled
SNERDI
CAP50
China · 40 MWe · Water-cooled
SNERDI
CAREM25
Argentina · 32 MWe · Water-cooled
CNEA
CMSR
Denmark · 100 MWe · Molten salt cooled
Saltfloss Energy
Copenhagen Atomics Waste Burner
Denmark · 42 MWe · Molten salt cooled
Copenhagen Atomics
DEER
USA · 1 MWe · Gas-cooled
Radiant
DF300
Canada · 300 MWe · Metal-cooled
Dual Fluid Energy
DFBR-1
USA · 15 MWe · Water-cooled
Deep Fission
DHR400
China · 0 MWe · Water-cooled
CNNC
ELENA
Russia · 0.7 MWe · Water-cooled
Kurchatov Institute
Elysium MCSFR
USA · 50 MWe · Molten salt cooled
Elysium Industries
EM2
USA · 265 MWe · Gas-cooled
General Atomics
Energy Well
Czech Republic · 8 MWe · Gas-cooled
Czech Technical University
ENHS
USA · 50 MWe · Metal-cooled
UC Berkeley
eVinci
USA · 5 MWe · Heat pipe-cooled
Westinghouse
FLEX
UK · 24 MWe · Molten salt cooled
MoltexFLEX
Flexblue
France · 160 MWe · Water-cooled
Naval Group
Flibe LFTR
USA · 250 MWe · Molten salt cooled
Flibe Energy
FMR
USA · 44 MWe · Gas-cooled
General Atomics
FUJI
Japan · 200 MWe · Molten salt cooled
IThEMS
Gen4 module
USA · 25 MWe · Metal-cooled
Gen4 Energy
GT-MHR
Russia · 288 MWe · Gas-cooled
OKBM Afrikantov
GTHTR300
Japan · 200 MWe · Gas-cooled
JAEA
Halo 10
USA · 10 MWe · Water-cooled
Hadron Energy
HAPPY200
China · 0 MWe · Water-cooled
SPIC
HECTAR
South Korea · 0 MWe · Gas-cooled
KAERI
Hermes 2
USA · 50 MWe · Molten salt cooled
Kairos Power
Hermes demonstration plant
USA · 20 MWe · Molten salt cooled
Kairos Power
HEXANA
France · 150 MWe · Molten salt cooled
HEXANA
Holos Mono
USA · 10 MWe · Gas-cooled
HolosGen
Holos Quad
USA · 10 MWe · Gas-cooled
HolosGen
HTGR-POLA
Poland · 11.5 MWe · Gas-cooled
NCBJ
HTMR100
South Africa · 35 MWe · Gas-cooled
Stratek Global
HTR-PM
China · 105 MWe · Gas-cooled
INET/Tsinghua University
HTR50S
Japan · 17.2 MWe · Gas-cooled
JAEA
HTTR
Japan · 0 MWe · Gas-cooled
JAEA
i-SMR
South Korea · 170 MWe · Water-cooled
KAERI
IMSR400
Canada · 195 MWe · Molten salt cooled
Terrestrial Energy
JIMMY
Czech Republic · 1.5 MWe · Molten salt cooled
Jimmy Energy
KARAT-100
Russia · 100 MWe · Water-cooled
NIKIET
KARAT-45
Russia · 45 MWe · Water-cooled
NIKIET
KLT-40S
Russia · 35 MWe · Water-cooled
OKBM Afrikantov
KP-FHR
USA · 140 MWe · Molten salt cooled
Kairos Power
KRONOS MMR
USA · 15 MWe · Gas-cooled
NANO Nuclear Energy
LDR-50
Finland · 0 MWe · Water-cooled
Steady Energy
Leadir-PS100
Canada · 36 MWe · Metal-cooled
Northern Nuclear
LEUNR
Canada · 0 MWe · Water-cooled
Canadian Space Mining Corporation
LFR-AS-200
France · 200 MWe · Metal-cooled
newcleo
LFR-AS-30
France · 30 MWe · Metal-cooled
newcleo
LFR-TL-30
France · 30 MWe · Metal-cooled
newcleo
LOKI MMR
USA · 1.5 MWe · Gas-cooled
NANO Nuclear Energy
LSPR
Japan · 53 MWe · Metal-cooled
Tokyo Institute of Technology
MARVEL Research Microreactor
USA · 0.02 MWe · Metal-cooled
INL/DOE
MHR-100
Russia · 50 MWe · Gas-cooled
OKBM Afrikantov
MicroURANUS
South Korea · 20 MWe · Metal-cooled
MicroURANUS Corp.
Mini Fuji
Japan · 4 MWe · Molten salt cooled
IThEMS
MMR-10
USA · 10 MWe · Gas-cooled
Ultra Safe Nuclear Corporation
MMR-5
USA · 5 MWe · Gas-cooled
Ultra Safe Nuclear Corporation
MN-1
USA · 0.35 MWe · Gas-cooled
MobileNuclear Energy
Moltex SSR-Th
UK · · Molten salt cooled
Moltex Energy
Moltex SSR-W
UK · 300 MWe · Molten salt cooled
Moltex Energy
MoveluX
Japan · 3 MWe · Gas-cooled
Toshiba
mPower
USA · 195 MWe · Water-cooled
BWXT
MSR-1
USA · 0.4 MWe · Molten salt cooled
Natura Resources
MSR-100
USA · 100 MWe · Molten salt cooled
Natura Resources
Natrium
USA · 345 MWe · Metal-cooled
TerraPower
NHR200-II
China · 0 MWe · Water-cooled
INET/Tsinghua University
Nuclearis N1
USA · 17 MWe · Water-cooled
Nuclearis Energy
Nuscale micro
USA · 1 MWe · Water-cooled
NuScale Power
NuScale Power Module
USA · 77 MWe · Water-cooled
NuScale Power
NUWARD
France · 170 MWe · Water-cooled
EDF
ODIN
USA · 2 MWe · Molten salt cooled
NANO Nuclear Energy
Otrera
France · 110 MWe · Molten salt cooled
Otrera New Energy
PB-FHR
USA · 100 MWe · Molten salt cooled
UC Berkeley
PBMR-400
South Africa · 165 MWe · Gas-cooled
PBMR (Pty)
PeLUIt/RDE
Indonesia · 3 MWe · Gas-cooled
BATAN
PHWR-220
India · 220 MWe · Water-cooled
NPCIL
PRISM
USA · 311 MWe · Metal-cooled
GE Hitachi
PWR-20
USA · 20 MWe · Water-cooled
Last Energy
R1
USA · 0.3 MWe · Heat pipe-cooled
Antares Nuclear
Rapid-L
Japan · 0.2 MWe · Metal-cooled
CRIEPI
RITM-200M
Russia · 50 MWe · Water-cooled
OKBM Afrikantov
RITM-200N
Russia · 55 MWe · Water-cooled
OKBM Afrikantov
RITM-200S
Russia · 50 MWe · Water-cooled
OKBM Afrikantov
Rolls-Royce SMR
UK · 470 MWe · Water-cooled
Rolls-Royce
RUTA-70
Russia · 0 MWe · Water-cooled
NIKIET
SALUS-100
South Korea · 100 MWe · Molten salt cooled
KAERI
SEALER-55
Sweden · 3 MWe · Metal-cooled
LeadCold
SHELF-M
Russia · 6.6 MWe · Water-cooled
NIKIET
SMART
South Korea · 107 MWe · Water-cooled
KAERI
SMR-300
USA · 366 MWe · Water-cooled
Holtec International
SSR-U
UK · 16 MWe · Molten salt cooled
Moltex Energy
SSTAR
USA · 20 MWe · Metal-cooled
ANL
STAR
USA · 10 MWe · Metal-cooled
ANL
STAR-H2
USA · 175 MWe · Metal-cooled
ANL
STAR-LM
USA · 100 MWe · Metal-cooled
ANL
Starcore
Canada · 14 MWe · Gas-cooled
Starcore Nuclear
START
Switzerland · 220 MWe · Metal-cooled
Transmutex
Stellarium
France · 250 MWe · Molten salt cooled
Stellaria
SVBR-100
Russia · 100 MWe · Metal-cooled
AKME-Engineering
TEPLATOR
Czech Republic · 0 MWe · Water-cooled
UWB & CIIRC CTU
Thorcon TMSR
USA · 250 MWe · Molten salt cooled
ThorCon
THORIZON
Netherlands · 100 MWe · Molten salt cooled
Thorizon
TMSR-SF
China · 2 MWe · Molten salt cooled
Shanghai Institute of Applied Physics
U-Battery
UK · 4 MWe · Gas-cooled
Urenco
UNITHERM
Russia · 6.6 MWe · Water-cooled
NIKIET
VBER-300
Russia · 325 MWe · Water-cooled
OKBM Afrikantov
VK-300
Russia · 250 MWe · Water-cooled
NIKIET
Westinghouse LFR
USA · 450 MWe · Metal-cooled
Westinghouse
XAMR
France · 40 MWe · Molten salt cooled
Naarea
Xe-100
USA · 80 MWe · Gas-cooled
X-energy
XENITH
USA · 5 MWe · Gas-cooled
X-energy

Capabilities

01

Structured Technical Data

Every reactor catalogued with thermal output, electrical capacity, fuel type, enrichment level, coolant, moderator, and neutron spectrum.

02

Licensing Tracker

Real-time regulatory status across NRC, CNSC, ONR, and 15+ national authorities with deployment timelines.

03

Interactive Global Map

Explore every SMR design worldwide on our zoomable map. Zoom in to see reactor names and locations.

04

Comparison Engine

Side-by-side analysis of any reactors. Filter, sort, and search the full database by any technical parameter.

Our Purpose

SMRDB exists to expand public knowledge of small modular reactors and accelerate their path from design to deployment. We believe that widespread understanding of SMR technology is critical to solving the world's most pressing energy challenges.

The world faces an unprecedented energy dilemma. Global electricity demand is surging — driven by the explosive growth of AI and data centers, which are projected to consume 8% of US electricity by 2030. Vampire power from always-on devices drains billions of kilowatt-hours annually. Meanwhile, the climate crisis demands we eliminate carbon emissions from power generation.

Zero Carbon Emissions

Nuclear power produces zero direct carbon emissions during operation. A single SMR can displace hundreds of thousands of tons of CO₂ annually compared to natural gas.

AI & Data Center Power

Hyperscale data centers need 100+ MW of reliable, 24/7 baseload power. SMRs are ideally sized for co-location — providing clean, constant energy where it's needed most.

Exceptional Safety Record

Modern SMR designs incorporate passive safety systems that shut down automatically without human intervention or external power. Many cannot physically melt down.

Factory-Built & Scalable

Unlike traditional reactors, SMRs are manufactured in factories and shipped to site — reducing construction time, cost overruns, and quality variability.

We also believe in transparency about the challenges. SMR development is expensive — first-of-a-kind costs can exceed $5 billion. Regulatory processes are slow and complex. Nuclear waste, while far smaller in volume than fossil fuel pollution, still requires long-term management. Public perception remains a barrier in many regions.

But the potential is transformative. SMRs can power remote communities, replace retiring coal plants, desalinate water, produce hydrogen, and provide the reliable baseload that intermittent renewables cannot. The goal of SMRDB is to make every piece of SMR data freely accessible — so researchers, policymakers, investors, and the public can make informed decisions about this critical technology.