NRC Authorizes Advanced Nuclear Reactor Construction at Texas Petrochemical Facility
Dow and X-energy receive federal permits to deploy modular nuclear technology in Texas.
1Federal Regulatory Approval Granted
The Nuclear Regulatory Commission has officially issued construction permits for four next-generation nuclear reactors at a Texas petrochemical complex. Developed by Dow and startup X-energy, the Long Mott Generating Station project represents a flagship initiative under the U.S. Energy Department’s Advanced Reactor Demonstration Program, aiming to revitalize the domestic nuclear sector.
2Modular Reactor Design Shift
These reactors utilize a modular design, allowing units to be manufactured in factories rather than built as massive, site-specific concrete structures. This approach enables deployment at industrial locations like data centers or chemical plants. The Xe-100 units specifically employ helium gas for cooling, replacing traditional water-based systems used in conventional power plants.
3Safety and Operational Features
The Xe-100 design uses pelletized fuel in a moving bed of pebbles, which X-energy CEO J. Clay Sell claims makes a meltdown physically impossible. Due to these inherent safety features, the facility will not require the standard 10-mile emergency planning zone typically mandated for traditional, large-scale nuclear power plants currently operating nationwide.
4Expedited Regulatory Review Process
The NRC approved these permits following an expedited review process, aligned with executive orders intended to accelerate the national energy sector. NRC Chairman Ho K. Nieh noted that the agency met an 18-month schedule, demonstrating that rigorous safety evaluations can be completed on predictable timelines to move advanced technology toward construction.
5Local Opposition and Concerns
Local environmental groups, including the San Antonio Bay Waterkeeper, have expressed strong opposition to the project. Diane Wilson, a local director, cited concerns regarding the indefinite on-site storage of spent nuclear fuel, as the United States currently lacks a permanent national disposal site for high-level radioactive waste generated by these reactors.
6Legal Challenges and Hurdles
In 2025, environmental organizations filed legal challenges against the permit application, citing safety concerns, but these were ultimately dismissed by the NRC. Despite receiving construction permits, Dow has not yet made a final investment decision to proceed with the project. If approved, construction could potentially begin before the year 2030.
7Industry Revival and Strategy
The U.S. has built only one new nuclear power plant in the last three decades, but federal authorities are now pushing for an industry revival. This project serves as a test case for the commercial model of atomic energy, with the nuclear industry monitoring the Texas development closely for future replication.
8Future Industrial Implications
If successful, the Long Mott project could provide a pathway for other heavy industries to install dedicated, on-site power generation. By moving beyond traditional water-cooled designs to molten salt or gas-based technologies, the sector aims to prove that advanced nuclear energy can reliably support industrial operations while meeting modern safety standards.