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Clinch River Small Modular Reactor

Clinch River Small Modular Reactor Clinch River Small Modular Reactor

Deploying Small Modular Reactor Technology

Bechtel is partnering with the Tennessee Valley Authority (TVA) to plan, license, and advance the deployment of a GE Vernova-Hitachi (GVH) small modular reactor (SMR) at the Clinch River Nuclear Site in Oak Ridge, Tennessee. In 2024, Bechtel joined TVA’s Integrated Project Delivery team, working alongside TVA, GVH, and Sargent & Lundy.

The project is designed to meet the nation’s growing electricity demand, strengthen energy security, and lead the commercialization of advanced nuclear technology in the U.S. — proving that SMRs can be built cost-effectively and at scale.

Next-Generation Reactor Technology and Digital Execution

300
Megawatt SMR

Capacity of light water reactor with passive safety systems

The project focuses on deploying a GVH BWRX-300 SMR, a 300-megawatt electric light water reactor with passive safety systems — the 10th generation of GVH’s proven boiling water reactor technology.

By producing steam directly inside the reactor pressure vessel, the design eliminates many external systems required by traditional reactors — reducing the complexity and size of the plant. Its passive safety systems allow the reactor to maintain optimal pressure and temperature for up to seven days without power or operator intervention — a significant improvement over conventional designs. This simplified approach can reduce the plant’s footprint by up to 90% compared to traditional large-scale boiling water reactors, helping lower construction costs.

In May 2025, TVA submitted a Construction Permit Application to the Nuclear Regulatory Commission for the project, a major milestone that advances Clinch River toward becoming the first boiling water SMR deployed in the United States.

Building Nuclear’s Digital Future  

Bechtel brings an integrated suite of standardized, Nuclear Quality Assurance-1 (NQA-1) qualified digital tools covering the full project lifecycle — from design through commissioning. Digital delivery enables real-time installation validation, improves schedule and cost certainty, maximizes efficiency across every phase of execution, and optimizes project delivery.

Clinch River Small Modular Reactor
Rendering of completed GVH BWRX-300 SMR at Clinch River Nuclear Site.

Integrated Delivery Backed by Nuclear Expertise

Unlike traditional nuclear construction projects in the United States, Clinch River will use an integrated project delivery approach. Bechtel is working closely with TVA and its partners as a unified team to plan for procurement, construction, and commissioning of Clinch River Nuclear Unit 1. This model aligns all parties around a shared budget and schedule, enabling faster decision-making, reducing risk, and helping control costs. By combining the strengths of each partner, we’re advancing a more efficient path to deploy SMRs at scale — helping deliver more affordable, reliable, and secure energy.  

Exterior view of nuclear cooling silos against a blue sky with mountains and a river in the background

Decades of Nuclear Innovation Built by Bechtel

Bechtel is the only EPC company with current projects across the full spectrum of nuclear reactor technologies — including new AP1000® reactors in Poland, America’s first utility-scale Gen III+ small modular reactor for Tennessee Valley Authority at Clinch River, and TerraPower’s first Natrium® plant in Wyoming.

We maintain the largest nuclear-experienced talent pool of any EPC company, bringing together the expertise needed to deliver the future of nuclear energy now along with the latest in digital tools and mega-project delivery best practices to build with execution certainty.

As the only EPC contractor to successfully bring nuclear plants online in the U.S. this century, we have safely delivered 76 gigawatts of nuclear power over the last seven decades.