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NRC Approves Dow's X-energy Small Modular Reactor Project
· Confirmed
In Short: The Nuclear Regulatory Commission (NRC) has approved Dow Chemical's application to construct four X-energy Xe-100 small modular reactors at its Seadrift, Texas, manufacturing site.
The Nuclear Regulatory Commission (NRC) has approved Dow Chemical's application to construct four X-energy Xe-100 small modular reactors at its Seadrift, Texas, manufacturing site. This marks a significant milestone in the deployment of advanced nuclear technology in the United States.
X-energy CEO Clay Sell highlighted the importance of the permit, stating, 'This is an important day. Getting the construction permit earlier than expected is reflective of the thorough and efficient work of the NRC, the reforms that have been put in place by Congress over the last six years, and the phenomenal work of the X-energy and Dow teams.'
The Xe-100 reactors are designed to produce 80 megawatts of electricity or 200 megawatts of thermal energy each, and the four reactors are expected to provide power to the site for 60 years. This project is part of the Department of Energy's Advanced Reactor Demonstration Program, which aims to accelerate the commercial deployment of advanced nuclear reactor technologies.
The NRC's decision marks the first US construction permit issued for a high-temperature gas-cooled reactor in nearly 60 years. The emergency planning zone for X-energy’s reactor design is expected to be 400 meters, compared with 10 miles for conventional light-water reactors.
The project demonstrates how advanced nuclear reactors could support energy-intensive manufacturing operations by providing both electricity and process heat directly where they are needed. The Department of Energy's Principal Deputy Assistant Secretary for Nuclear Energy, Mike Goff, emphasized the significance of this milestone, stating, 'This milestone marks a significant step forward for the Department of Energy’s Advanced Reactor Demonstration Program and our efforts to bring next-generation nuclear technologies to market.'
X-energy's Xe-100 is an 80 MWe (megawatts electric) and 200 MWt (megawatts thermal) reactor. The project at Dow's Seadrift site is expected to provide reliable electricity and high-temperature steam to Dow’s manufacturing operations, underscoring the growing interest in small modular reactors as a clean energy solution.
X-energy rode a wave of excitement earlier this year when its April initial public offering raised $1 billion. The company's plans to build 12 of its Xe-100 small modular reactors in Indiana, adding 960 megawatts of capacity, further highlight the potential of SMRs in the clean energy sector.
What this adds
The NRC's decision marks the first US construction permit issued for a high-temperature gas-cooled reactor in nearly 60 years.
What's confirmed
- Monday’s construction permit issuance for the 320-MWe reactor project at Dow’s UCC Seadrift Operations manufacturing site is historic on multiple fronts: “This is an important day. Getting the construction permit earlier than expected is reflective of the thorough and efficient work of the NRC, the reforms that have been put in place by Congress over the last six years, and the phenomenal work of the X-energy and Dow teams,” said X-energy CEO Clay Sell.
- The Nuclear Regulatory Commission has approved Dow’s construction permit application for its Long Mott Generating Station in Seadrift, Texas, which would include four X-energy Xe-100 reactors.
- X-energy and Dow said the “historic milestone” was achieved under the US Department of Energy’s Advanced Reactor Demonstration Program, an initiative designed to accelerate the development, testing, and commercial deployment of advanced nuclear reactors through cost-shared partnerships with private industry.
- No SMR is currently in operation in the U.S., and X-energy says Dow’s reactors won’t be operational until the early 2030s.
- The emergency planning zone for X-energy’s reactor design is expected to be 400 meters, compared with 10 miles for conventional light-water reactors.
What's still developing
- The Xe-100 combines the robust characteristics of TRISO fuel with advanced safety features for a flexible design that enables a dramatically smaller footprint than conventional light-water reactors.
- TerraPower, backed by Microsoft co-founder Bill Gates, received approval earlier this year for a reactor in Wyoming, while a project involving GE Vernova and Hitachi was approved in Tennessee in September.
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- By shrinking the reactor, proponents say it will speed construction and reduce costs, though those advantages have yet to be proven.