SCI-FI-TEK

Type One Energy Completes Initial Design Review for Fusion Power Plant

By Editorial Dept - May 29, 2025,  Oilprice.com

Type One Energy has completed the first formal design review of its 350 MWe Infinity Two fusion power plant, a key milestone for what could become the world’s first commercially viable stellarator-based fusion energy facility.

The U.S.-based company said the successful review confirms that the Infinity Two design aligns with the expectations of the Tennessee Valley Authority (TVA) and broader market requirements for a clean, reliable baseload power source. The plant, based on stellarator technology, aims to deliver 350 megawatts of electricity to the grid by the mid-2030s.

The Infinity Two concept is founded on what Type One Energy describes as the world’s only implementable, peer-reviewed physics basis for a fusion power plant, published recently in the Journal of Plasma Physics. The design has drawn growing interest from utilities and industrial players, according to the company.

“This is the first serious fusion power plant design I’ve seen,” said Dr. George H. “Hutch” Neilson of Princeton Plasma Physics Laboratory, who participated in the review board. “It provides a sound foundation for what could be the first system to produce net electricity from fusion.”

The Infinity Two reactor will feature a two-year operating cycle with planned 30-day maintenance outages, using current-generation materials and enabling technologies. Unlike tokamak designs, the stellarator’s unique twisted geometry enables steady-state plasma confinement, offering enhanced stability and lower operational complexity.

The initial design was developed through a partner-rich strategy, including collaboration with firms such as AtkinsRéalis. CEO Christofer Mowry emphasized that the approach reflects the company’s goal of pursuing the “lowest risk, shortest schedule path” to fusion commercialization.

The project complements a February agreement between Type One Energy and TVA to explore the deployment of Infinity Two in the Tennessee Valley. The plant could repurpose existing fossil fuel infrastructure or be built on greenfield sites to support regional energy needs.

The next phase of development is expected to focus on refining systems-level integration ahead of site-specific planning and regulatory engagement.