GE Vernova Hitachi Nuclear Energy

BWRX-300

In Development

300 MWe Gen III+ boiling-water small modular reactor derived from the NRC-certified ESBWR, using natural circulation and passive safety systems, a 60-year design life, and proven GNF fuel. Designed for a power block that fits within two soccer fields and 24-36 month nth-of-a-kind construction. The first grid-scale SMR under construction in the Western world.

Latest update Oct 7, 2026

BWRX-300

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Current status

Unit 1 under construction at OPG's Darlington site (construction began May 2025; in service by end of 2030, four units planned). NRC issued TVA Construction Permit CPAR-2 for Clinch River Unit 1 on September 28, 2026, the first US BWRX-300 CP; nuclear construction has not begun, no new construction packages were authorized, and the TVA board still must approve a final commitment to build. CPAR-2 sets construction completion between October 1, 2031 and September 30, 2032 and is not an operating license. Up to 10 further US units planned under the $40B US-Japan program; Elementl Power Early Works Agreement for up to 5 units at Meigs County, Ohio; Blue Energy filed the first part of an NRC construction permit on September 15, 2026 for Port of Victoria, Texas; selected or down-selected in Poland, Estonia, Hungary, Saskatchewan, Lithuania, Bulgaria and the UK; Studsvik selected GVH and Samsung C&T on September 3, 2026 for a proposed four-unit, 1.2 GW Swedish ReFirm project after the June 2026 Ringhals loss to Rolls-Royce SMR.

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Specifications4

Output
300 MWe
Design life
60 years
Construction time (nth-of-a-kind)
~24–36 months, first concrete to fuel-load ready
First-unit cost (Darlington)
CAD $7.7B (~US $5.6B)

Announced next steps from GE Vernova Hitachi Nuclear Energy that mention BWRX-300.

  1. Nov 2026

    SGE-led UK BWRX-300 bid enters the Advanced Nuclear Pipeline

    SGE's team (with Samsung C&T, Laing O'Rourke, Aecon Group and Google Cloud) applied under the UK's Advanced Nuclear Framework to deploy 14 BWRX-300 units (4.2 GW) across three UK sites, including six units at Oldbury-on-Severn. SGE targets entering the government's Advanced Nuclear Pipeline in November 2026, with site selection and government support-scheme negotiations to follow in H1 2027 ahead of a targeted 2030 final investment decision and first-unit operation in 2034.

  2. 2027

    Blue Energy Texas gas-plus-nuclear plant - final investment decision

    Blue Energy and GE Vernova plan a 2.5 GW gas-plus-nuclear hybrid plant at the Port of Victoria, Texas to power an AI/data-center campus: GE Vernova gas turbines (~1 GW) online as early as 2030, switching to ~1.5 GW of GVH BWRX-300 SMR output as early as 2032. On August 13, 2026 the companies signed an agreement launching the next phase (engineering design, licensing, safety analysis) and reserving a 2029 delivery slot for two 7HA.02 gas turbines. On September 15, 2026 Blue Energy filed the first part of its NRC construction permit application for the first nuclear unit, requesting limited foundation and shaft work and NRC approval of its gas-first 'Blue Bridge' sequence; the second half of the application is expected in H2 2027 after a year of site-specific data collection. The project remains subject to a 2027 final investment decision.

  3. 2030

    Darlington Unit 1 completion and grid connection

    OPG targets construction completion of the first BWRX-300 in late 2029 and commercial operation by the end of 2030 - which would make it the Western world's first operating grid-scale SMR. OPG submitted its application for the 20-year operating licence to the CNSC on March 25, 2026 (a hearing date has not yet been set); reactor-building shaft excavation was completed in early 2026 and the RHP-1 foundation hold point was cleared March 30, 2026 after CNSC verified commitments were met. GVH's BWRX-300 product page still lists construction complete by late 2029 and commercial operation by end of 2030 as of September 17, 2026.

  4. 2030

    Elementl Power Ohio project advances toward construction

    Elementl Power signed an Early Works Agreement with GVH in June 2026 to deploy up to five BWRX-300 units (about 1.5 GW) at a nearly 700-acre site in Letart Township, Meigs County, Ohio, and has filed with PJM Interconnection to connect the first 600 MW of output to the grid. Elementl is targeting construction start in 2030 and completion of the first unit in 2034.

  1. NRC permits TVA to build first U.S. BWRX-300 SMR

    The NRC on September 29, 2026 issued a construction permit for Clinch River Unit 1, a GE Vernova Hitachi Nuclear Energy BWRX-300, at TVA's site near Oak Ridge, Tennessee. TVA said it is the first U.S. utility permitted to build the 300-megawatt BWRX-300 and only the second U.S. advanced-reactor construction permit; no construction start date was announced and an operating license is still required. The Washington Examiner reported the NRC finished the review in 14 months, four months early, and that TVA is still negotiating cost sharing so ratepayers do not bear first-of-a-kind costs.

    www.prnewswire.com www.washingtonexaminer.com

  2. GE Vernova Hitachi picked for 1.2 GW Swedish nuclear project

    Swedish nuclear technology company Studsvik announced September 3, 2026 that it selected GE Vernova Hitachi Nuclear Energy and Samsung C&T as strategic partners to advance a proposed four-unit BWRX-300 small modular reactor project totaling about 1.2 gigawatts. The project would be sited at Studsvik's existing licensed nuclear site in Nykoping or at Malma in Valdemarsvik, with the first unit targeted to enter operation in the mid-2030s; GE Vernova Hitachi will lead reactor design and licensing support while Studsvik handles permitting and government engagement, and South Korea's DS Investment Partners will lead project investment. The move marks GVH's return to the Swedish market after losing a separate nuclear competition there to Rolls-Royce SMR in June 2026, though the new agreement is not yet a final investment decision.

    ANS Nuclear Newswire

  3. NRC holds first-of-kind hearing on Clinch River SMR permit

    The Nuclear Regulatory Commission held a mandatory, uncontested hearing on August 13 on TVA's construction permit application for the Clinch River BWRX-300 small modular reactor, the first time the agency has used its new streamlined public hearing process for a construction permit review. NRC staff had already recommended approval in a June 2026 safety evaluation; the hearing record stays open until August 27 before commissioners issue a final permit decision.

    Federal Register NucNet

  4. GE Vernova Hitachi advances Texas gas-plus-nuclear project

    Blue Energy and GE Vernova Hitachi Nuclear Energy signed an agreement August 13 launching the next phase of their planned 2.5 GW 'gas-plus-nuclear' plant in Victoria, Texas, advancing engineering design, licensing and safety analysis ahead of a 2027 final investment decision. The companies also signed a slot-reservation agreement for 2029 delivery of two GE Vernova 7HA.02 gas turbines that would supply about 1 GW of power as early as 2030, before roughly 1.5 GW of GVH BWRX-300 small modular reactor output switches in as early as 2032.

    GE Vernova Yahoo Finance

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