Type One Energy is one of several companies in the U.S. racing towards the world’s first commercial nuclear fusion power plant. A Series B funding round, resulting in $200 million, brings the energy company’s total to over $400 million. The round was co-led by Breakthrough Energy Ventures and Clutterbuck Capital.

The new capital fuels Type One Energy’s FusionDirect technology program and advances Project Infinity. This project aims to build the world’s first commercial fusion plant at the Tennessee Valley Authority’s Bull Run site in east Tennessee. The effort includes an engineering prototype called Infinity One and a 400-megawatt plant named Infinity Two.

Commercializing Fusion Power

Artwork credit: AL_A

Type One Energy works with established energy partners and relies on existing factories, expertise, and supply chains to keep costs and risks down. The team believes the main hurdles left for stellarator fusion are engineering and manufacturing challenges rather than basic physics questions.

“The breadth and quality of investors in this funding round demonstrate growing support for our strategy to industrialize the commercial deployment of fusion energy,” said Christofer Mowry, Chief Executive Officer of Type One Energy. “The Series B financing enables us to remain focused on advancing our stellarator technology and Project Infinity design activities, while working with experienced industrial partners to deliver the first commercial fusion power plant at TVA’s Bull Run site.”

Advertisement

Investors see this practical approach as a key turning point.

“Fusion is approaching the point where deployment, not discovery, defines the challenge,” said Carmichael Roberts of Breakthrough Energy Ventures. “Type One Energy brings together the necessary business and technical leadership, optimized stellarator technology, and industrial relationships that will help move fusion from breakthrough science to commercial power plants. We are pleased to deepen our support as the company advances Project Infinity and its international partnerships.”

Licensing and Global Reach

Type One Energy has already secured an initial operating license from Tennessee, establishing safety standards for fusion design. Beyond the U.S., the company is working on a second project through the U.K. Infinity Fusion Consortium alongside Tokamak Energy, AECOM, Sheffield Forgemasters, and Barclays.

“Fusion has the potential to become an important source of reliable, low-carbon energy at scale. This investment strengthens our position in the fusion field as we continue to explore the technologies and collaborations that can help advance commercialization,” said Enrique Gonzalez Zanetich, Partner at Siemens Energy Ventures. “Type One Energy’s pragmatic, execution-focused approach, strong industry and research network, and experienced and knowledgeable team provide a strong foundation for turning scientific progress into a commercially viable energy solution.”