GE Vernova Hitachi's BWRX-300
Making next-generation nuclear a reality
The BWRX-300 small modular reactor (SMR) provides 24/7 on-demand, low carbon power.

The world’s need for sustainable and reliable energy has never been greater—and the BWRX-300 can help meet that need.
GE Vernova Hitachi’s (GVH) BWRX-300 is not a concept, a plan, or a PowerPoint. It's now under construction. Its configuration, based on proven technologies, has been selected for the leading project in the Western world with construction underway in Canada on the first BWRX-300. Construction of the first unit is estimated to be completed by the end of 2029 and in commercial operation by the end of 2030.
The BWRX-300 is a source of electricity generation capable of powering communities across the globe with the energy they rely on to thrive.
With more than 65 years of nuclear industry experience and a rich legacy of excellence and quality, GE Vernova Hitachi has the energy technologies to change the world—and the BWRX-300 is a key part of that mission.
How GE Vernova Hitachi is leading the way
It's official: the Darlington New Nuclear Project
Ontario will be home to the Western world’s first SMR. Working in collaboration with Ontario Power Generation (OPG) and others, construction began in May 2025 and is estimated to be completed in late 2029.
jobs to be provided during construction
sustainable jobs projected per year over decades after construction
of project spending will go to companies in Ontario during construction
expected to be added in GDP for Canada
of electricity will be provided by the four planned units, which can power over 1 million homes and businesses
Why the BWRX-300?
A legacy of achievement
1939
First GE involvement in nuclear physics
1955
GE Atomic Division established
1957
Vallecitos BWR AEC License #1
1962
NPD achieves full power—first reactor in Canada
1974
25th BWR—Peach Bottom Unit 3
1986
50th BWR—River Bend Nuclear Generating Station
1996
1st Gen III reactor (ABWR) built on-time on-budget
2014
ESBWR U.S. NRC License
2017
BWRX-300 launched
2020
Natrium™ launched
2022
First commercial contract for BWRX-300
2023
TVA, OPG, and SGE invest in BWRX-300 common design
2024
BWRX-300 completes Step 1 of UK’S GDA process
2025
Darlington site receives full approval for BWRX-300 construction
Recent developments
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*Decarbonization as used in this document is intended to mean the reduction of carbon emissions on a kilogram per megawatt hour.