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BWRX-300

Powered by commercially available fuel, the BWRX-300 features an innovative and simplified configuration, resulting in less concrete and steel needed for construction. The BWRX-300 is a cost- competitive solution that can be deployed for electricity generation and industrial applications, including hydrogen production, desalination, and district heating. It features significantly less capital cost per MW when compared with a typical water-cooled SMR, and using a combination of modular and open-top construction techniques, the BWRX-300 can be constructed in 24-36 months while achieving a volume reduction in plant layout.

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Our solutions

Products and services

Carbon-free power

Zero-carbon solutions—such as nuclear power—can contribute to a more decarbonized energy future. Nuclear power offers tremendous potential to help cut carbon emissions with the speed and scale the world requires.

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Fuel

GVH offers two standard fuel configurations for BWRs in addition to being on the vanguard of developing fuel for the next generation of nuclear reactors.

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Nuclear services

GVH focuses on the services and technologies that matter most: plant performance, dose reductions, life extension, long-term asset management, and parts and outage management.

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Recent commercial wins

In the news

North Carolina

BWRX-300 small modular reactor reaches regulatory milestone in the UK

December 11, 2025 – The GE Vernova Hitachi Nuclear Energy (GVH) BWRX-300 small modular reactor (SMR) has completed Step 2 of the Generic Design Assessment (GDA) process in the UK.

GE Vernova Hitachi’s BWRX-300 small modular reactor to be located at Clinch River

December 2, 2025– The U.S. Department of Energy (DOE) has announced a $400 million grant to the Tennessee Valley Authority (TVA) to continue to accelerate deployment of GE Vernova Hitachi Nuclear Energy’s BWRX-300 small modular reactor (SMR).

GE Vernova Hitachi Nuclear Energy and Samsung C&T form strategic alliance to advance deployment of the BWRX-300 small modular reactor

Oct 1, 2025 - GE Vernova Hitachi Nuclear Energy (GVH) and Samsung C&T, a leading construction and engineering company, have announced a strategic alliance to advance the deployment of the BWRX-300 small modular reactor (SMR) in strategic global markets, outside North America.

Global Nuclear Fuel introduces next generation fuel product

Oct 6, 2025 - Global Nuclear Fuel (GNF, a GE Vernova-led alliance with Hitachi, Ltd.) today announced the introduction of GNF4, a next generation nuclear fuel product built on a 60-year legacy of boiling water reactor (BWR) fuel design innovation and performance.

BWRX-300 small modular reactor down selected by Vattenfall

Aug 21, 2025 – The GE Vernova Hitachi Nuclear Energy (GVH) BWRX-300 small modular reactor (SMR) has been down selected by Vattenfall as it evaluates the construction of new reactors adjacent to its Ringhals plant site on the Värö Peninsula in Sweden.

Fuel rods manufactured by Global Nuclear Fuel to be evaluated at Pacific Northwest National Laboratory

Aug 13, 2025 – High burnup fuel rods, manufactured by Global Nuclear Fuel (GNF, a GE Vernova-led joint venture with Hitachi, Ltd.) have been delivered to the U.S. Department of Energy’s (DOE) Pacific Northwest National Laboratory (PNNL) for examination after commercial operation.

GVH and Fortum sign early works agreement to advance potential deployment of BWRX-300 small modular reactor

Jul 1, 2025 - GE Vernova Hitachi Nuclear Energy (GVH) and Fortum have entered into an early works agreement to advance potential deployment of the BWRX-300 small modular reactor (SMR) in Finland and Sweden.

GVH to establish Canadian small modular reactor engineering and service center in Ontario

Jun 23, 2025 - GE Vernova Hitachi Nuclear Energy (GVH) today announced plans to establish a cutting-edge Canadian BWRX-300 Engineering and Service Centre in Durham region near the Ontario Power Generation (OPG) Darlington New Nuclear Project site.

BWRX-300 small modular reactor approved for construction by the Province of Ontario and Ontario Power Generation

May 8, 2025 - GE Vernova Hitachi Nuclear Energy (GVH), today announced that construction of the first BWRX-300 small modular reactor has been approved by the Province of Ontario and Ontario Power Generation (OPG)

GVH & Ontario Power Generation to build first small modular reactor in western world in Canada

May 08, 2025 - GE Vernova Hitachi Nuclear Energy (GVH) announced today approval from the Province of Ontario and Ontario Power Generation (OPG) to proceed with deployment of the first small modular reactor (SMR) in the Western world at the Darlington nuclear site in Ontario, Canada.

GE Vernova’s nuclear business accelerates UK SMR deployment with MoUs

Feb 4, 2025 - GE Vernova’s nuclear business, GE Hitachi Nuclear Energy (GEH), has signed another series of Memorandum of Understanding (MoUs) with two major UK nuclear engineering firms—Boccard and Cavendish Nuclear.

GE Hitachi awards contract for BWRX-300 reactor pressure vessel to BWXT

Jan 27, 2025 - GE Vernova announced that it will manufacture BWX Technologies, Inc.’s (BWXT) reactor pressure valve for Ontario Power Generation’s first BWRX-300 small modular reactor at its Darlington New Nuclear Project site.

U.S. utilities team up to accelerate deployment of GE Vernova’s BWRX-300 small modular reactor

Jan 17, 2025 - GE Vernova announced its part in a coalition of utility companies and supply chain partners collaborating to accelerate the BWRX-300 small modular reactor’s deployment in the U.S.

GE Vernova selects Worley Chemetics for BWRX-300 SMR build

Oct 31, 2024 – GE Vernova taps Worley Chemetics to design a key safety system for North America's first BWRX-300 small modular reactor.

GE Vernova among DOE winners for nuclear fuel supply

Oct 8, 2024 – GE Vernova among awarded contracts to build U.S. supply chain for advanced nuclear fuels under DOE's Investing in America plan.

GE Vernova taps Velan for Canada’s first SMR project

Oct 10, 2024 – GE Vernova selects Velan to supply valves for Canada's first BWRX-300 small modular nuclear reactor at Darlington.

GE Vernova signs MoUs to advance SMR delivery in UK

Sep 9, 2024 – GEH signs MoUs with Aecon, AtkinsRéalis, Jacobs, and Laing O’Rourke to advance BWRX-300 technology.

Vattenfall shortlists GE Vernova for Swedish SMR project

Jun 12, 2024 – Vattenfall shortlists GE Vernova for SMR evaluation as part of new nuclear plans at Sweden's Ringhals site.

GE Vernova fuel rods to be evaluated at Oak Ridge lab

May 9, 2024 – GE Vernova's advanced fuel rods sent to Oak Ridge Lab for testing after use in a U.S. power plant.

GE Hitachi forms supplier group to advance BWRX-300 SMR

Apr 29, 2024 – GE Hitachi Nuclear Energy forms a supplier group to advance the global deployment of the BWRX-300 small modular reactor.

GE Hitachi hosts UK conference on SMR opportunities

Mar 21, 2024 – GE Hitachi meets with 150+ UK suppliers to discuss BWRX-300 SMR deployment and supply chain roles.

GE Vernova cleared to produce advanced nuclear fuel

Feb 14, 2024 - GE Vernova's Global Nuclear Fuel receives U.S. approval to produce, ship, and analyze fuel with up to 8% Uranium-235 enrichment.

GE Vernova selected for UK Future Nuclear Enabling Fund

Jan 25, 2024 – GE Vernova awarded £33.6M UK grant to advance BWRX-300 SMR, supporting UK energy security and decarbonization goals by 2050.

SaskPower and GE Hitachi sign deal for SMR development

Jan 30, 2024 – SaskPower and GE Hitachi collaborate on BWRX-300 SMR, advancing planning, expertise sharing, and workforce development in Saskatchewan.

Environmental permitting of Polish SMR plant progresses

Feb 5, 2024 - Orlen Synthos Green Energy (OSGE) can now begin environmental and siting research for its planned SMR project in Małopolska, Poland.

GEH selected for UK Future Nuclear Enabling Fund

Jan 25, 2024 - GE Hitachi Nuclear Energy welcomes confirmation of a £33.6 million UK Future Nuclear Enabling Fund grant from the Department for Energy Security & Net Zero.

Polish nuclear authority provides general opinion on BWRX-300

May 23, 2023 - The President of the National Atomic Energy Agency has confirmed to ORLEN Synthos Green Energy (OSGE) that the design of GE Hitachi’s BWRX-300 SMR reactor meets nuclear safety requirements.

A legendary agreement

Mar 23. 2023 - Tennessee Valley Authority, Ontario Power Generation and Synthos Green Energy have jointly invested in the development of GE Hitachi’s SMR technology.

New BWRX-300 deployment in Estonia

Feb 8, 2023 - Fermi Energia has selected GE Hitachi’s SMR to help meet its energy security and climate goals.

Fortum sign early works agreement to advance potential deployment of BWRX-300 small modular reactor

July 1, 2025 – GE Vernova Hitachi Nuclear Energy (GVH) and Fortum have entered into an early works agreement to advance potential deployment of the BWRX-300 small modular reactor (SMR) in Finland and Sweden.

A legacy of achievement

GVH's history of nuclear innovation

1939

First GE involvement in nuclear physics

Following the discovery of nuclear fission in Europe, GE begins investigating the practicality of using nuclear energy to supply consumer electricity.

1955

GE Atomic Division established

The Atomic Energy Act of 1954 increased support for a civilian nuclear industry. GE created its nuclear (atomic) energy division to develop the technologies that would help bring nuclear energy to the masses.

1957

Vallecitos BWR AEC License #1

Located about 30 miles east of San Francisco, CA, this experimental reactor delivered 40K MW hours of electricity to the local utility grid from 1957 to 1963.

1962

NPD achieves full power—first reactor in Canada

The 20 MW deuterium uranium reactor realized unique on-power refueling concepts: using natural uranium fuel and a heavy water moderator and coolant.

1974

25th BWR—Peach Bottom Unit 3

Located about 50 miles southeast of Harrisburg, PA, this plant puts out 1,382 MW following an approved uprate in 2018.

1986

50th BWR—River Bend Nuclear Generating Station

Located about 30 miles north of Baton Rouge, LA, this plant puts out about 974 MW following an approved uprate in 2003.

1996

1st Gen III reactor (ABWR) built on-time on-budget

Built in Japan, this featured modular construction and can meet power generation needs ranging from 1,350 to 1,460 MW net.

2014

ESBWR U.S. NRC License

The Economic Simplified Boiling-Water Reactor was built with 25% fewer pumps and mechanical drives than existing active safety plants to generate as much as 1,520 MW.

2017

BWRX-300 launched

When wind, solar, or hydro aren’t available, the BWRX-300 is a highly available power source for those concerned about energy security.

2020

Natrium™ launched

A key enabler of wind and solar technologies, Natrium was jointly developed with TerraPower, and stores more energy than typical battery facilities to use when the wind isn’t blowing or the sun isn’t shining.

2022

First commercial contract for BWRX-300

Under this contract’s terms, the Darlington New Nuclear Project site in Clarington, Ontario, Canada, will be the first site in the world to deploy the next generation SMR.

2023

TVA, OPG, and SGE invest in BWRX-300 common design

Three international power companies in the US, Canada, and Poland agree to invest in developing the next generation modular reactor for their respective countries.

2024

BWRX-300 completes Step 1 of UK’S GDA process

The BWRX-300 successfully completes Step 1 of the UK’s Generic Design Assessment (GDA) process, advancing the technology’s prospects in the UK and other international markets.

2025

Darlington site receives full approval for BWRX-300 construction

Deployment of four BWRX-300s at the Darlington site receives final approval from Province of Ontario and Ontario Power Generation and full-scale construction of the first unit begins.

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GE Vernova Hitachi Nuclear Energy is a world-leading provider of advanced reactor technology, fuel and nuclear services.

© 2026 GE Vernova Hitachi Nuclear Energy and/or its affiliates. All rights reserved. GE is a trademark of General Electric Company used under trademark license. HITACHI is a trademark of Hitachi, Ltd. used under trademark license.

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BWRX-300

Products and services

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Fuel

Nuclear services

In the news

North Carolina

BWRX-300 small modular reactor reaches regulatory milestone in the UK

North Carolina

GE Vernova Hitachi’s BWRX-300 small modular reactor to be located at Clinch River

Sweden

GE Vernova Hitachi Nuclear Energy and Samsung C&T form strategic alliance to advance deployment of the BWRX-300 small modular reactor

North Carolina

Global Nuclear Fuel introduces next generation fuel product

Sweden

BWRX-300 small modular reactor down selected by Vattenfall

North Carolina

Fuel rods manufactured by Global Nuclear Fuel to be evaluated at Pacific Northwest National Laboratory

Finland

GVH and Fortum sign early works agreement to advance potential deployment of BWRX-300 small modular reactor

Canada

GVH to establish Canadian small modular reactor engineering and service center in Ontario

Canada

BWRX-300 small modular reactor approved for construction by the Province of Ontario and Ontario Power Generation

Canada

GVH & Ontario Power Generation to build first small modular reactor in western world in Canada

UK

GE Vernova’s nuclear business accelerates UK SMR deployment with MoUs

Canada

GE Hitachi awards contract for BWRX-300 reactor pressure vessel to BWXT

United States

U.S. utilities team up to accelerate deployment of GE Vernova’s BWRX-300 small modular reactor

Canada

GE Vernova selects Worley Chemetics for BWRX-300 SMR build

United States

GE Vernova among DOE winners for nuclear fuel supply

Canada

GE Vernova taps Velan for Canada’s first SMR project

UK

GE Vernova signs MoUs to advance SMR delivery in UK

Sweden

Vattenfall shortlists GE Vernova for Swedish SMR project

United States

GE Vernova fuel rods to be evaluated at Oak Ridge lab

United States

GE Hitachi forms supplier group to advance BWRX-300 SMR

UK

GE Hitachi hosts UK conference on SMR opportunities

United States

GE Vernova cleared to produce advanced nuclear fuel

UK

GE Vernova selected for UK Future Nuclear Enabling Fund

Canada

SaskPower and GE Hitachi sign deal for SMR development

Poland

Environmental permitting of Polish SMR plant progresses

UK

GEH selected for UK Future Nuclear Enabling Fund

Poland

Polish nuclear authority provides general opinion on BWRX-300

Canada

A legendary agreement

Estonia

New BWRX-300 deployment in Estonia

Finland