On October 6, 2026, Type One Energy, the global fusion power plant developer, announced the successful completion of a $200 million Series B financing round. The financing was co-led by Breakthrough Energy Ventures and Clutterbuck Capital, with participation from Lowercarbon Capital, Siemens Energy Ventures, SiteGround Capital, and other new investors. Wilson Sonsini Goodrich & Rosati advised Type One Energy on the transaction.

The financing supports Type One Energy’s FusionDirect™ technology development program and continued execution of Project Infinity toward the world’s first commercial fusion plant at the Tennessee Valley Authority’s Bull Run site in east Tennessee. It also advances Type One Energy’s fusion industrialization strategy of building best-in-class partnerships across the value chain. This approach—differentiated within the fusion industry—applies the proven energy industry growth model to fusion and brings together the financing, manufacturing, engineering, and operational capabilities required to rapidly deploy commercial fusion at global scale.

The Wilson Sonsini team that advised Type One Energy on the transaction included Michael Danaher, Brett Schulman, Angela Chan, Sophia Kunthara, and Chelsea Gahran.

For more information, please see Type One Energy’s news release.