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BWRX-300

The BWRX-300 is a Generation III+ boiling water reactor from GE Vernova Hitachi Nuclear Energy. 0 units are operating and 1 is under construction, out of 47 on record.

Operating
0
—
Under construction
1
Planned
46
Cancelled
0
0 retired

A 300 MWe simplification of the licensed ESBWR, using natural circulation instead of recirculation pumps. Selected for Darlington in Ontario, where construction of the first unit began in 2025 — the first SMR construction start in a G7 country — and by TVA for Clinch River. Unlike most SMR designs it runs on conventional LEU, so it does not depend on HALEU supply.

Design
VendorGE Vernova Hitachi Nuclear Energy
Reactor typeBoiling water reactor (BWR)
GenerationIII+
Capacity range300 MWe gross
CoolantLight water
Typical enrichment3–5% U-235
Where it is built
Poland 28 units
United States 10 units
Canada 7 units, 1 building
Estonia 2 units

All BWRX-300 units

UnitCountryStatusGross MWOnline
Darlington New nuclear power plant 1 Canada Under construction 300 2030
Alberta nuclear power plant 1 Canada Announced 315 2030
Alberta nuclear power plant 2 Canada Announced 315 2030
Clinch River SMR nuclear power plant 1 United States Pre-construction 300 2033
Clinch River SMR nuclear power plant 2 United States Announced 300 —
Clinch River SMR nuclear power plant 3 United States Announced 300 —
Clinch River SMR nuclear power plant 4 United States Announced 300 —
Darlington New nuclear power plant 2 Canada Announced 300 2036
Darlington New nuclear power plant 3 Canada Announced 300 2036
Darlington New nuclear power plant 4 Canada Announced 300 2036
Dąbrowa Górnicza nuclear power plant 1 Poland Announced 300 —
Dąbrowa Górnicza nuclear power plant 2 Poland Announced 300 —
Dąbrowa Górnicza nuclear power plant 3 Poland Announced 300 —
Dąbrowa Górnicza nuclear power plant 4 Poland Announced 300 —
Elektrownia Jądrowa Pątnów nuclear power plant 1 Poland Announced 300 —
Elektrownia Jądrowa Pątnów nuclear power plant 2 Poland Announced 300 —
Elektrownia Jądrowa Pątnów nuclear power plant 3 Poland Announced 300 —
Elektrownia Jądrowa Pątnów nuclear power plant 4 Poland Announced 300 —
Fermi Energia nuclear power plant 1 Estonia Announced 300 2035
Fermi Energia nuclear power plant 2 Estonia Announced 300 —
Letart nuclear power plant 1 United States Pre-construction 300 2034
Letart nuclear power plant 2 United States Pre-construction 300 —
Letart nuclear power plant 3 United States Announced 300 —
Letart nuclear power plant 4 United States Announced 300 —
Letart nuclear power plant 5 United States Announced 300 —
Nowa Huta nuclear power plant 1 Poland Announced 300 —
Nowa Huta nuclear power plant 2 Poland Announced 300 —
Nowa Huta nuclear power plant 3 Poland Announced 300 —
Nowa Huta nuclear power plant 4 Poland Announced 300 —
Ostrołęka nuclear power plant 1 Poland Pre-construction 300 —
Ostrołęka nuclear power plant 2 Poland Pre-construction 300 —
Ostrołęka nuclear power plant 3 Poland Pre-construction 300 —
Ostrołęka nuclear power plant 4 Poland Pre-construction 300 —
Rockport nuclear power plant United States Announced 300 —
Saskatchewan SMR nuclear power plant Canada Announced 300 2035
Stawy Monowskie nuclear power plant 1 Poland Announced 300 —
Stawy Monowskie nuclear power plant 2 Poland Announced 300 —
Stawy Monowskie nuclear power plant 3 Poland Announced 300 —
Stawy Monowskie nuclear power plant 4 Poland Announced 300 —
Tarnobrzeg Special Economic Zone nuclear power plant 1 Poland Announced 300 —
Tarnobrzeg Special Economic Zone nuclear power plant 2 Poland Announced 300 —
Tarnobrzeg Special Economic Zone nuclear power plant 3 Poland Announced 300 —
Tarnobrzeg Special Economic Zone nuclear power plant 4 Poland Announced 300 —
Włocławek nuclear power plant 1 Poland Pre-construction 300 —
Włocławek nuclear power plant 2 Poland Pre-construction 300 —
Włocławek nuclear power plant 3 Poland Pre-construction 300 —
Włocławek nuclear power plant 4 Poland Pre-construction 300 —

Sources