NASHVILLE, TN – Tennessee has officially enacted the United States' first state-level regulatory framework for nuclear fusion, a landmark move designed to accelerate the development of commercial fusion energy. Governor Bill Lee's administration finalized the implementation of legislation that distinguishes fusion devices from traditional nuclear fission reactors, creating a clear and predictable path for private companies. This pioneering state action provides regulatory certainty that proponents argue is essential for attracting the investment needed to build the world's first fusion power plants.

The new framework, established under a bill passed by the General Assembly, designates the Tennessee Department of Environment and Conservation (TDEC) as the primary regulatory body. Under the new rules, fusion energy systems will be regulated with a risk-informed approach similar to that used for particle accelerators, rather than the more stringent and costly regulations governing fission facilities. This distinction is based on the fundamentally different risk profile of fusion, which does not produce long-lived, high-level radioactive waste and has no potential for meltdown.

This distinction is based on the fundamentally different risk profile of fusion, which does not produce long-lived, high-level radioactive waste and has no potential for meltdown.

This legislative clarity has already catalyzed significant private investment in the state. Type One Energy Group is moving forward with its plans to construct its Infinity One stellarator prototype at the Tennessee Valley Authority's (TVA) Bull Run Fossil Plant site in Clinton. The project, a direct beneficiary of the new regulatory environment, aims to demonstrate the viability of the company's advanced stellarator design for commercial power generation.

The state's initiative aligns with the direction set by the U.S. Nuclear Regulatory Commission (NRC), which in 2023 voted to regulate fusion under its Part 30 framework for byproduct materials, separate from fission reactors. However, by establishing its own comprehensive state-level authority now, Tennessee has moved more quickly than the federal government, giving it a competitive edge. The Fusion Industry Association has praised the state's leadership, highlighting it as a model for how to foster innovation while ensuring public safety.

Tennessee's position as a hub for advanced energy research, anchored by the Oak Ridge National Laboratory (ORNL), provided critical momentum for the legislation. ORNL is a global leader in fusion science and materials research, offering a deep pool of talent and technical expertise for emerging companies. The state's strategy leverages these existing assets to build a complete ecosystem for the nascent fusion industry, from fundamental research to commercial deployment.

With the regulatory framework now in place, all eyes will be on the TDEC as it begins issuing the first-ever state-level licenses for fusion device construction and operation. The progress of Type One Energy's Infinity One project will serve as a crucial test case for the efficiency and effectiveness of this new regulatory model. Other states are expected to closely monitor Tennessee's experience as they consider developing their own frameworks to compete for a stake in the multi-trillion-dollar future of clean fusion energy.