Type One Energy Raises $200M Toward a 400-Megawatt Fusion Plant by 2034
Type One Energy announced on October 6, 2026 that it had raised $200 million in a Series B round. TechCrunch The company, based in Knoxville, Tennessee and founded in 2019 to build fusion power plants, said the financing will advance work toward a 400-megawatt commercial power plant targeted for operation by 2034.
Breakthrough Energy Ventures and Clutterbuck Capital led the round. Lowercarbon Capital, Siemens Energy Ventures and SiteGround Capital participated. CEO Christofer Mowry said the Series B should cover about half the cost of the 400-megawatt plant. The company had previously raised at least $82.5 million.
The target is 2034. That schedule leaves limited room for procurement, licensing work, and detailed engineering, before first plasma and grid synchronization work begins.
Type One Energy is pursuing stellarator magnetic confinement for steady-state, baseload electricity from fusion. Think of it as a magnetic cage shaped to hold hot plasma continuously. The company lists exascale supercomputing, artificial intelligence and high-temperature superconducting magnets as enabling technologies for its commercial approach. Type One Energy
It describes itself as a "Global Fusion Technology Provider." The distinction matters for people who work with tokamaks or stellarators. Stellarators use complex three-dimensional coils built to tight assembly tolerances. In return, they can run in steady state without driven plasma current, which simplifies continuous operation for baseload power if coil manufacturing and field accuracy can be controlled at scale.
Commonwealth Fusion Systems licensed its high-temperature superconducting magnet technology to Type One Energy. AECOM is working on engineering for Infinity Two, the company's initial commercial power plant.
Type One Energy has announced publication of a baseline physics design basis for the proposed Infinity Two stellarator fusion pilot power plant. American Nuclear Society
Type One Energy plans to build its first two fusion devices at the Tennessee Valley Authority's Bull Run site. The Bull Run Energy Complex, the company's commercial-scale fusion site, is in East Tennessee. Type One Energy
The planned electrical output was upgraded from 350 MWe to 400 MWe in early 2026. Type One Energy
In May 2026, Type One Energy, Tokamak Energy and AECOM formed the UK Infinity Fusion Consortium to pursue a similar plant in the UK. World Nuclear Association
Looking at what this means for funding, covering roughly half a 400-MW plant with a $200 million Series B points to a capital plan that still needs additional equity, project finance, or public co-funding before full-scale construction. In my view, that is normal for large energy infrastructure. It puts weight on the next raise and on cost control through final design.
The broader context here is supply chain and siting. A TVA brownfield site offers grid interconnection, workforce, and community familiarity with power operations. Licensed high-temperature superconducting tape, precision stellarator coils, tritium breeding and handling, and power conversion still have to move from one-off fabrication to repeatable delivery. AECOM's role on Infinity Two engineering shows where private fusion now stands, with systems integration, tolerances, and constructability alongside plasma performance.
In my view, the dual-track approach in Tennessee and the UK could help standardize the Infinity design across regulatory regimes, or it could split management attention. If Type One Energy holds the physics basis stable while AECOM firms up cost and schedule, the next two years will clarify whether a stellarator can offer utilities a firm, always-on complement to renewables and fission, and whether private capital will fund the second half of the build.
