List of small nuclear reactor designs

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Small modular reactors are approximately one-third the size of the current nuclear plants (about 350 MWe or less) and have compact and scalable designs which propose to offer a host of safety, construction and economic benefits by offering great potential for lower initial capital investment and scalability.

Status updated based on IAEA Report as of September 2014

NOTE Some reactors are not included in IAEA Report. Not all IAEA reactors are listed yet.

Sortable table
Name Gross power (MWe) Type Producer Status
4S 10–50 FNR Toshiba, Japan Detailed Design
ABV-6 6–9 PWR OKBM Afrikantov, Russia Detailed Design
ANGSTREM[1] 6 LFR OKB Gidropress, Russia Conceptual Design
mPower 195 PWR Babcock & Wilcox, USA Basic Design
(Cancelled March 2017)
BREST-OD-300[2] 300 LFR Atomenergoprom, Russia Detailed Design
CAREM 27–30 PWR CNEA & INVAP, Argentina Under Construction
EGP-6 11 RBMK IPPE & Teploelektroproekt Design, Russia Operating
(not actively marketed due to legacy design)
ELENA[a] 0.068 PWR Kurchatov Institute, Russia Conceptual Design
Flexblue 160 PWR Areva TA / DCNS group, France Conceptual Design
Fuji MSR 200 MSR International Thorium Molten Salt Forum (ITMSF), Japan Conceptual Design(?)
GT-MHR 285 HTGR OKBM Afrikantov, Russia Conceptual Design Completed
G4M 25 LFR Gen4 Energy, USA Conceptual Design
IMSR400 185–192 MSR Terrestrial Energy, Inc.,[5] Canada Conceptual Design
IRIS 335 PWR Westinghouse-led, international Basic Design
KLT-40S 35 PWR OKBM Afrikantov, Russia Under Construction
MHR-100 25–87 HTGR OKBM Afrikantov, Russia Conceptual Design
MHR-T[b] 4х205.5 HTGR OKBM Afrikantov, Russia Conceptual Design
MRX 30–100 PWR JAERI, Japan Conceptual Design
NP-300 100–300 PWR Areva TA, France Conceptual Design
NuScale 45–50 LWR NuScale Power LLC, USA Licensing Stage
PBMR-400 165 HTGR Eskom, South Africa, et al. Detailed Design
RITM-200 50 PWR OKBM Afrikantov, Russia Under Construction
SMART 100 PWR KAERI, S. Korea Licensed
SMR-160 160 PWR Holtec International, USA Conceptual Design
SVBR-100[6][7] 100 LFR OKB Gidropress, Russia Detailed Design
SSR 37.5x8 MSR Moltex Energy LLP,[8] UK Conceptual Design
S-PRISM 311 FBR GE Hitachi Nuclear Energy Detailed Design
TerraPower 10 TWR Intellectual Ventures - Bellevue, WA USA Conceptual Design
U-Battery 4 PBR U-Battery consortium,[c] UK Conceptual Design[9]
VBER-300 325 PWR OKBM Afrikantov, Russia Licensing Stage
VK-300 250 BWR Atomstroyexport, Russia Detailed Design
VVER-300 300 BWR OKB Gidropress, Russia Conceptual Design
Westinghouse SMR 225 PWR Westinghouse Electric Company, USA Preliminary Design Completed
Xe-100 35 HTGR X-energy,[10] USA Conceptual design development
  1. ^ If completed, ELENA would be the smallest commercial nuclear reactor ever built.[3][4]
  2. ^ Multi-unit complex based on the GT-MHR reactor design, designed primarily for hydrogen production.
  3. ^ Urenco Group, Atkins, Amec Foster Wheeler, Laing O'Rourke, Cammell Laird, Nuclear AMRC

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