Our 2025 Highlights: Progressing Toward a Fusion-Powered Future
Last year, significant headway was made in the race to a more sustainable future, and the fusion industry is leading the charge for reliable renewable energy. Around the world, we’re seeing fast-growing enthusiasm for fusion energy across the public and private sectors, with a 178% jump in investment, according to the Fusion Industry Association.
The timing is right. Humanity’s needs are fast outpacing traditional sources of renewable energy, and the power of the sun—fusion—is the key to keeping up.
As we make new strides toward a sustainable future in 2026, let’s pause for a moment to reflect on the major progress that’s already been achieved.
1. Publishing the Infinity Two Physics Design Basis
March was a defining moment for both Type One Energy and the fusion industry: We made history by publishing the world’s first comprehensive, self-consistent physics basis for a practical stellarator fusion power plant. Our in-depth physics basis appeared in a suite of six peer-reviewed papers and an accompanying editorial in the prestigious Journal of Plasma Physics.
Our research is the first to present an integrated physics design that addresses the requirements for plasma performance, power plant startup, construction logistics, reliability, and economic factors grounded in the real requirements of a power plant.
This physics basis serves as the foundation for the Infinity Two fusion power plant, marking an exciting leap in the commercialization of stellarator fusion energy and making it a reality for the grid. This project is currently under development with the Tennessee Valley Authority and underlines the shift of stellarator fusion from a theoretical concept to a commercial reality.
2. Completing the 77K Magnet Test at MIT
Testing to the highest standards is a crucial element of maximizing fusion’s viability as a sustainable energy source. Last year yielded a major engineering achievement with the successful 77K magnet test at the Massachusetts Institute of Technology.
This experiment was a critical undertaking to confirm the performance, stability, and precision alignment of our advanced stellarator magnet at cryogenic temperatures under relevant operating conditions. These findings provide an important stepping stone in guiding the next stage of magnet prototype development and the construction of our Infinity One stellarator testbed and the Infinity Two power plant project.
3. Partnering with the Tennessee Valley Authority
In September, we announced one of our biggest milestones to date: Our partnership with TVA to deploy America’s first commercial stellarator fusion plant. AECOM, a global infrastructure leader, will also contribute to our partnership by conducting preliminary design engineering for the 350MWe Infinity Two stellarator fusion power plant.
The Type One technical team has already built five stellarators, including the world’s first optimized stellarator. The stellarator is the only magnetic confinement fusion technology to have demonstrated stable, steady-state operations and high efficiency.
This collaboration is a testament to the growing alignment between the public and private sectors working toward a sustainable energy future. Commercialization of fusion energy will create a ripple effect felt by industries beyond fusion. Not only will it generate on-demand power at competitive prices, but it will also create high-quality jobs and drive continuous economic growth in the area. Partnerships like this are a model of collaboration that could be replicated around the world.
Moving forward
Our 2025 achievements are important milestones along the path to commercializing fusion energy at scale. The momentum we’ve built is founded on collective effort as well as technical expertise, driven by the dedication of our team, partners, and the wider fusion community. We continue on the path to commercialization in 2026 and look forward to the day when fusion energy is the foundation of clean, baseload energy.
Visit our website to learn more about Type One Energy’s roadmap to achieve fusion and deliver sustainable, safe and affordable energy to the world.