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US Clears First 300 MW Advanced Small Nuclear Reactor for Construction

  • On Monday, the Nuclear Regulatory Commission issued the Tennessee Valley Authority a construction permit for a small modular reactor at its Clinch River site near Oak Ridge, the second such permit for a commercial advanced reactor in the United States.
  • President Donald Trump established the Pilot Reactor Program last year to accelerate advanced reactor development, supporting small modular reactors designed to produce 300 megawatts using standardized components that reduce construction complexity.
  • Chairman Ho K. Nieh noted the NRC completed the application review in 14 months, saying, "Four months ahead of schedule is what the new NRC looks like," as the project aims to meet rising electricity demand from data centers.
  • While the technology remains unproven at commercial scale, TVA President Mike Skaggs stated the utility is negotiating cost-sharing arrangements, emphasizing the "priority is ensuring the people of the Valley do not shoulder the costs."
  • This project follows TerraPower's permit in Wyoming, reflecting broader competition with China over energy dominance. The utility must still construct the facility and obtain a separate operating license from federal regulators before producing electricity.
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The U.S. Nuclear Regulatory Commission (NRC) has granted a building permit to the Tennessee Valley Authority (TVA) to build a small modular nuclear reactor in Oak Ridge, Tennessee, the authority said in a statement. It will be the first commercial small modular reactor in the United States. The 300-megawatt BWRX-300 is the same type that could be built in Hungary.

·Budapest, Hungary
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WATE broke the news in Nashville, United States on Tuesday, September 29, 2026.
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