Skip to content
Back to feed

Policy · med impact

Tennessee grants first fusion license, clearing path for 400MW stellarator plant

The Tennessee Department of Environment and Conservation has issued a license to Type One Energy for the construction of its 400 MW 'Infinity One' stellarator at the Tennessee Valley Authority's Bull Run site.

By Fusion Energy News Desk·9/16/2026, 6:01:23 AM·2 min read·Wed, 16 Sep 2026 06:01:23 GMT·
Reporting
·✓ Editor-verified
Share

Type One Energy has secured a license from the Tennessee Department of Environment and Conservation (TDEC) to build its 'Infinity One' fusion power plant. The facility, planned for the Tennessee Valley Authority's (TVA) Bull Run Fossil Plant site in Clinton, is designed as a 400-megawatt stellarator. This regulatory approval represents a critical step in the company's plan to repurpose existing energy infrastructure for fusion power generation. The project is part of a public-private partnership involving Type One, TVA, and TDEC, aiming to establish a fusion energy hub in the region. Source: Type One Energy

The license clears a significant state-level regulatory hurdle, allowing Type One Energy to proceed with pre-construction activities for the demonstration plant. The project carries a projected investment of $800 million and is expected to create approximately 550 jobs. The collaboration with the TVA, a federal corporation and the nation's largest public power utility, provides access to an established site with grid connections and a skilled workforce, potentially accelerating the development timeline. This model of siting fusion facilities at retiring fossil fuel plants is gaining traction as a strategy to manage the energy transition. Source: Type One Energy

The project carries a projected investment of $800 million and is expected to create approximately 550 jobs.

The 'Infinity One' facility will be based on the stellarator concept, a magnetic confinement approach that uses complex, non-axisymmetric magnetic coils to contain plasma without requiring a large net plasma current. This design inherently avoids the current-driven disruptions that can affect tokamaks, offering a potential path to steady-state operation. While historically more complex to design and build compared to tokamaks, advances in computational modeling and high-temperature superconducting magnets have renewed interest in the stellarator architecture. This project is a significant commercial bet on the viability of the stellarator for power production, a key topic in fusion technology comparisons.

This licensing action in Tennessee reflects an evolving regulatory framework for fusion energy in the United States. At the federal level, the Nuclear Regulatory Commission (NRC) has opted to regulate fusion facilities under a framework separate from traditional fission power plants, a decision seen as favorable by the private fusion industry. State-level actions, such as the one by TDEC, are now becoming the next critical path item for developers. The successful navigation of this state process by Type One Energy provides a template for other companies and signals a growing governmental readiness to engage with commercial fusion projects, a key aspect of fusion policy development.

Reporting grounded in coverage from the original publisher read the source .

Weekly newsletter

Fusion Energy Weekly

The week in fusion: breakthroughs, companies, and capital — in your inbox. Free, every Monday.

Primary sources

Editorial standards: Fusion Energy News dispatches are compiled from primary filings, peer-reviewed papers, and on-the-record statements. Corrections: corrections@fusionenergynews.com · public log

More on Policy

Letters to the editor(0)

Sign in to write a letter

No letters yet. Be the first to write one.