Type One Energy, a Knoxville, Tennessee startup founded in 2019 to build fusion power plants, announced Tuesday that it has raised $200 million. The Series B was led by repeat investor Breakthrough Energy Ventures and Clutterbuck Capital, with participation from Lowercarbon Capital, Siemens Energy Ventures and SiteGround Capital. The company had previously raised $82.5 million in an extended Series A.
The money gets the company about halfway to paying for a 400-megawatt commercial power plant, CEO Christofer Mowry told TechCrunch. The plant, called Infinity Two, is targeted to come online by 2034, and the company believes it can complete its first plant using less capital than many competitors even with one or more subsequent rounds. The strategy is to act as an integrator: design the plant and many components, then have a bespoke network of suppliers build them, rather than manufacturing in-house. “Why would I want to spend on bricks and mortar?” Mowry said. “I used to run a big nuclear manufacturing company. That’s expensive.”
The supplier roster is already forming. Type One will build its first two fusion devices on the Tennessee Valley Authority’s Bull Run site, infrastructure consultant AECOM is working on engineering for Infinity Two, and competitor Commonwealth Fusion Systems has licensed its high-temperature superconducting magnet technology to Type One to form the backbone of the reactor design. The integrator model cuts the capital needed but trades manufacturing risk for supplier-integration risk — the Boeing-Spirit AeroSystems quality failures being the cautionary tale the sector knows best.
The raise moves Type One up the ranks of funded fusion companies in a field where even $200 million does not go far. It is also a signal for the AI-power race: hyperscalers are signing 15- and 20-year power deals because they believe firm generation will stay scarce into the next decade, and every funded fusion timeline that survives scrutiny tightens the race to be the marginal source of that power.