A fusion startup has secured $200 million to turn a twisted magnetic reactor design into power-plant hardware. Type One Energy announced the Series B financing on October 6, 2026. The funding supports its FusionDirect program and Project Infinity in Tennessee.
The company uses a stellarator, a device whose shaped magnetic fields confine plasma, an extremely hot, electrically charged gas. Its appeal is steady operation. Achieving that in a commercial plant still requires building and integrating the machinery, rather than simply announcing a reactor design.
Project Infinity includes two different machines at the Tennessee Valley Authority's Bull Run site. Infinity One is an engineering prototype. Infinity Two is a planned power plant designed to deliver 400 megawatts of electricity to the grid, according to Type One Energy.
That output is a design target, not electricity already being supplied. The company's technology page schedules Infinity One's commissioning for 2029. The financing announcement does not report commercial fusion generation.
Breakthrough Energy Ventures and Clutterbuck Capital co-led the round. New participants include Lowercarbon Capital, Siemens Energy Ventures and SiteGround Capital. Type One says it wants established industrial partners to supply manufacturing, engineering and operating capabilities rather than rebuilding all of those functions itself.
The company argues that the main remaining challenges are engineering and industrialization. That assessment is Type One's view. Published designs and investment commitments do not, by themselves, prove a plant's operating costs or dependable electricity output.
The cash therefore funds the move from a physics design toward constructed equipment. Infinity Two remains a planned power plant.
