The Tennessee Valley Authority (TVA) and Type One Energy Group have formalized an agreement to develop a fusion power plant at the site of the retired Bull Run Fossil Plant in Clinton, Tennessee. Under the terms of the partnership, TVA will invest up to $100 million for pre-licensing activities and site-readiness preparations. The collaboration aims to deploy Type One's Infinity One, a stellarator-based fusion pilot plant projected to generate 350 megawatts of power. This initiative represents a significant step in repurposing legacy fossil fuel infrastructure for advanced nuclear energy and is contingent upon Type One meeting key technical and financial milestones. Source: Type One Energy

Type One Energy's technology is centered on the stellarator, a magnetic confinement concept that uses complex, non-planar magnetic coils to create a twisted plasma geometry. Unlike the more common tokamak design, stellarators are inherently capable of steady-state operation without the need for a large plasma current, which mitigates the risk of current-driven disruptions. The company's Infinity One prototype is intended to serve as a commercially viable pilot plant. The selection of a stellarator for a utility-scale project is notable, as the design's engineering complexity has historically presented challenges, a topic often covered in fusion technology comparisons. Source: Type One Energy

Type One Energy's technology is centered on the stellarator, a magnetic confinement concept that uses complex, non-planar magnetic coils to create a twisted plasma geometry.

For TVA, the nation's largest public power utility, this project aligns with a broader strategy to decarbonize its energy portfolio. The authority is exploring a range of advanced nuclear technologies to meet its goal of adding 10,000 megawatts of new nuclear capacity by 2035. The collaboration with Type One Energy complements TVA's existing work on small modular reactors (SMRs) at the Clinch River site. By partnering with a private fusion developer, TVA gains a position in a next-generation energy technology while providing a realistic pathway for grid integration and regulatory approval, a key aspect of the public-sector fusion landscape. Source: Type One Energy

The agreement follows a previous memorandum of understanding signed in August 2023 and solidifies the Bull Run site as the target location. The project's progression depends on several factors, including Type One securing necessary public-private funding and successfully navigating the U.S. Nuclear Regulatory Commission (NRC) licensing process. TVA's financial commitment is structured to support the critical pre-construction phase, covering costs associated with environmental reviews, site characterization, and preliminary design. This partnership model, where a utility provides a site and regulatory expertise, could become a template for commercializing fusion energy in the United States. Source: Type One Energy