TVA and Type One Energy Accelerate Fusion Commercialization in Tennessee
TVA and Type One Energy Accelerate Fusion Commercialization in Tennessee
TVA and Type One Energy advanced their collaboration in support of a 350-megawatt fusion power plant at TVA’s former Bull Run Fossil Plant near Oak Ridge, Tennessee.
The agreement continues TVA’s national leadership in advanced nuclear innovation to support the growing energy demands of AI, quantum computing, and advanced manufacturing with reliable, carbon-free power.
This partnership is another example of how Governor Lee is helping to build a nuclear ecosystem in Tennessee that provides good jobs and opportunities for the people of the Tennessee Valley region
OAK RIDGE, Tenn. (September 19, 2025) – The Tennessee Valley Authority (TVA) and Type One Energy announced Friday that TVA has issued a Letter of Intent (LOI) to Type One Energy regarding the utility’s interest in the potential deployment of Type One Energy’s fusion power plant technology at its former Bull Run Fossil site once it is commercially ready.
Infinity Two is a first-generation 350 MWe baseload power plant utilizing Type One Energy’s stellarator fusion technology. The stellarator is currently the only fusion technology to have demonstrated stable, steady-state operation with high efficiency, characteristics which are important for TVA and others in the industry who need to reliably generate on-demand power at competitive prices. Type One Energy is developing Infinity Two using today’s existing materials and fundamental fusion technologies to support near-term deployment of the technology. The LOI also covers potential future use of the prototype facilities as an operator and maintenance training facility for the Infinity Two workforce.
A rendering of the future Infinity Two Fusion Pilot Plant at TVA’s Bull Run in East Tennessee.
“TVA is a leader in pursuing advanced nuclear technologies we need to power America’s economic prosperity and fuel artificial intelligence, quantum computing and advanced manufacturing,” said Don Moul, TVA President and CEO. “We are strategically partnering with innovative companies like Type One Energy to advance the development of nuclear technologies, and I am excited about the possibility of the first U.S. commercial stellarator fusion power plant being built in the Tennessee Valley. Our region is building a nuclear ecosystem that provides good jobs and opportunities for the people of the Valley.”
TVA is at the forefront of advanced nuclear innovation, and this collaboration reinforces the agency’s commitment to quickly deliver reliable energy to support the nation’s growing power demand.
“We are really honored to be working with TVA on the world’s first private sector fusion power plant project,” said Christofer Mowry, Type One Energy’s CEO. “TVA is a best-in-class energy utility that knows how to build, operate, and maintain complex power generation technologies. This LOI with TVA, and the role it establishes for Type One Energy as the fusion technology provider for their Infinity Two project, is therefore fully aligned with our goal of pursuing the lowest-risk approach to commercializing fusion energy.”
”Tennessee is ready-made to lead America’s energy independence, and today’s announcement further strengthens our position as a leader in safe, clean, and reliable energy,” said Tennessee Governor Bill Lee. “We are proud that the first U.S. commercial stellarator fusion project could be developed in Oak Ridge, creating high-quality jobs and driving continued economic growth and opportunity for Tennesseans.”
Final decisions and definitive agreements regarding the funding and construction of Infinity Two, as well as any agreements to purchase the energy output, are subject to TVA Board approval, regulatory review, and alignment with TVA’s least-cost planning processes and American energy dominance strategy.
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About TVA
The Tennessee Valley Authority is the nation’s largest public power supplier, delivering energy to more than 10 million people across seven southeastern states. TVA has one of the most diverse energy systems – including nuclear, hydro, coal, gas, solar and advanced technologies. TVA is making significant investments in its power system toward new generation and transmission. TVA is a corporate agency of the United States, receiving no taxpayer funding, deriving virtually all of its revenues from sales of electricity. TVA maintains some of the lowest energy costs and highest reliability in the nation. TVA’s residential rates are lower than those paid by about 80% of customers of the top 100 U.S. utilities, and its industrial rates are lower than those paid by over 90% of customers of the top 100 U.S. utilities. In addition, TVA provides flood control, navigation, and land management for the Tennessee River system, and assists local power companies and state and local governments with economic development and job creation. Learn more at TVA.com.
About Type One Energy
Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. Established in 2019 and venture-backed in 2023, the company is led by a team of globally recognized fusion scientists with a strong track record of building state-of-the-art stellarator fusion machines, together with veteran business leaders experienced in scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy. Type One Energy is committed to community engagement in the development and deployment of its clean energy technology. For more information, visit www.typeoneenergy.com or follow us on LinkedIn.
TVA and Type One Energy Sign First Contracts for Fusion Power Plant Project
TVA and Type One Energy Sign First Contracts for Fusion Power Plant Project
KNOXVILLE, Tenn. (July 22, 2025) — The Tennessee Valley Authority (TVA) and Type One Energy announced today that they had signed the first set of commercial contracts related to Project Infinity, which is developing fusion power plant technology to supply the Tennessee Valley with secure, reliable, and clean energy by as early as the mid-2030s. TVA, through its Power Service Shops (PSS) facility in Muscle Shoals, Alabama, and with support from other locations, will assist in the development of tailored welding and fabrication techniques for Project Infinity. These manufacturing and construction methods will be used for the Type One Energy Infinity One stellarator fusion machine currently being deployed at TVA’s Bull Run Fossil Plant near Knoxville, TN. They are also intended for the potential subsequent TVA fusion power plant project, which utilizes Type One Energy’s Infinity Two stellarator technology.
With these contracts, Project Infinity will include participation by one of the region’s leading industrial technology centers. The TVA PSS draws on almost a century of expertise in power generation component overhaul and repair techniques to aid in developing practical welding processes and fabrication methods for the world’s first commercial fusion power plant project. They exercise the economic engagement of the Tennessee Valley and its workforce in creating the future of energy.
Developing a commercially viable fusion power plant requires not only the uniquely stable, steady-state, and efficient operating characteristics of stellarator technology, but also the broad manufacturing, construction, and operating experience of the power generation industry.
“I have seen TVA’s capabilities from my previous work with them in the nuclear and hydro power sectors,” said Mark Ruis, Type One Energy’s Vice President for Stellarator Maintenance and Inspection Solutions. “Their PSS facilities, and highly skilled workforce which repairs and refurbishes some of the most challenging components in the power industry, will significantly derisk our ability to deliver Infinity One and Infinity Two.”
The ability for Project Infinity to deliver near-term economic benefit for the Tennessee Valley is being demonstrated by the work which will begin immediately as a result of these contracts with Type One Energy.
“TVA Power Service Shops have a long, storied history and we look forward to being part of this initiative,” said Doug Keeling, TVA’s Vice President for the PSS.
The advanced manufacturing contracts with PSS are one aspect of the quick pace of activities surrounding deployment of Infinity One at TVA’s retired Bull Run Fossil Plant in Clinton, TN. Engineering and construction work to prepare the facility for assembly of Infinity One is underway by a team of TVA and Type One Energy employees.
About Type One Energy
Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. Established in 2019 and venture-backed in 2023, the company is led by a team of globally recognized fusion scientists with a strong track record of building state-of-the-art stellarator fusion machines, together with veteran business leaders experienced in scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy. Type One Energy is committed to community engagement in the development and deployment of its clean energy technology. For more information, visit www.typeoneenergy.com or follow us on LinkedIn.
Type One Energy Completes Formal Initial Design Review of Fusion Power Plant
KNOXVILLE, Tenn. (May 27, 2025) — Type One Energy announced today that it had successfully completed the first formal design review of Infinity Two, which is based on the world’s only implementable, peer-reviewed physics basis for a fusion power plant recently published by the prestigious Journal of Plasma Physics. The Infinity Two design is progressing in support of a potential fusion power plant project with the Tennessee Valley Authority (TVA), using Type One Energy stellarator technology.
The Infinity Two design review board, which was chaired by Type One Energy Chief Technology Officer, Dr. Thomas Sunn Pedersen, included several outside experts, including Dr. George H. “Hutch” Neilson from the Princeton Plasma Physics Laboratory and Dr. Paolo Ferroni from the Westinghouse Electric Company, to provide independent assessments of the engineering work performed by Type One Energy.
“It is the first serious fusion power plant design that I’ve seen,” said Dr. Neilson. “The work they’ve done to date provides a sound foundation for continued design development of what could be the first system to produce net electricity from fusion.”
Dr. Ferroni, the Chief Engineer for Advanced Reactors – GenIV/Fusion at Westinghouse Electric Company, added “I think it is important that the Type One Energy team is taking a comprehensive plant-level approach to develop their technology which includes a description of all necessary systems, not just the plasma core.”
Successful completion of the initial design review confirms that the Infinity Two technology approach, architecture, performance, and reliability requirements remain aligned with the expectations of TVA and the broader global energy market for a commercially viable First of a Kind (FOAK) fusion power plant.
The Type One Energy Infinity Two fusion power plant is being designed to put a nominal 350MWe on the electricity grid. This design is based on the company’s groundbreaking stellarator fusion physics basis, which for the first time realistically considered, in a comprehensive and unified manner, the complex relationship between competing requirements for plasma performance, power plant startup, construction logistics, reliability, and economics utilizing actual power plant operating experience. The Journal of Plasma Physics considers this approach to be “… setting the gold standard for how this is done.”
The Infinity Two architecture is grounded in stellarator fusion technology. This technology has, uniquely within the fusion industry, demonstrated stable, continuous steady-state operation at large scale by the W7-X machine. By properly architecting Infinity Two, Type One Energy is creating a proprietary fusion power plant design that supports a compelling 2-year power plant operating cycle separated by 30-day planned maintenance outages using today’s existing materials and enabling technologies. The company also made use of its partner-rich commercialization program to access the power generation industry’s deep expertise in power plant engineering design. Among other firms, Atkins-Realis assisted in developing the design of those Infinity Two systems and structures not part of Type One Energy’s core focus on the stellarator fusion technology.
“Our ability to efficiently architect the initial Infinity Two design in an efficient, partner rich manner reaffirms our commitment to pursuing the lowest risk, shortest schedule, path to a commercially viable fusion power plant,” said Christofer Mowry, Chief Executive Officer for Type One Energy. “The energy industry needs more reliable, clean, power generation technology that can meet the rapidly increasing demand for electricity and we are delivering a commercially compelling solution.”
The progress Type One Energy is making on its Infinity Two fusion power plant design, together with its collaboration with TVA, has attracted the attention of the global energy industry. Several prominent energy utilities and industrial companies have expressed an interest in Infinity Two and participation in Type One Energy’s deployment of its first-generation fusion power plant technology.
About Type One Energy
Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. Established in 2019 and venture-backed in 2023, the company is led by a team of globally recognized fusion scientists with a strong track record of building state-of-the-art stellarator fusion machines, together with veteran business leaders experienced in scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy. Type One Energy is committed to community engagement in the development and deployment of its clean energy technology. For more information, visit www.typeoneenergy.com or follow us on LinkedIn.
