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02.11.2025

Commonwealth Fusion Systems and Type One Energy Sign Fusion Magnet Agreement

DEVENS, Mass. and KNOXVILLE, Tenn. (Feb. 11, 2025) — Commonwealth Fusion Systems (CFS) and Type One Energy announced an agreement that gives Type One Energy an exclusive license to use CFS’ groundbreaking high-temperature superconducting (HTS) cable technology in the development of its own proprietary stellarator fusion magnets. The agreement also gives Type One Energy the benefit of the experience CFS has in manufacturing the world’s most powerful HTS fusion magnets. 

The leading magnet technology from CFS has been proven to generate very high magnetic fields with HTS cable designs that can support Type One Energy’s development of magnets for its Infinity Two fusion power plant. Type One Energy’s agreement with CFS is part of a supply chain strategy to deliver Infinity Two in a highly capital efficient manner, with minimal commercialization risks, by establishing strong industry partnerships. These mutually beneficial relationships allow Type One Energy to access demonstrated background technologies and capabilities across the global energy sector.  The agreement between the two companies also expands the market for CFS’ magnet business by aligning with the leading stellarator fusion company in the market, Type One Energy.

"At CFS, we are confident in our approach using magnetic confinement in tokamaks, but we also want to support companies pursuing other promising magnetic confinement applications given the scale necessary to address the urgent transition to fusion energy and the transformative nature of high-field magnets,” said Bob Mumgaard, Chief Executive Officer and Co-founder of CFS. “As the leader in the design and manufacturing of HTS magnets that are operating in the world today, we are pleased to support the meaningful acceleration of Type One Energy’s efforts to provide commercial fusion.”

CFS is the only fusion company in the world able to manufacture at scale magnets that use its breakthrough superconducting cable technology. These magnets are built to carry strong electrical currents and to withstand powerful physical and electromagnetic forces within operating fusion machines. CFS has proven that these magnets will work under rigorous conditions, not only through peer-reviewed research but under real conditions in full-scale magnetic coils.

“Our agreement with CFS represents the best of cooperative relationships within the fusion industry,” said Christofer Mowry, CEO of Type One Energy. “We get unique access to leading manufacturing capabilities and the HTS cable background technology that our company would otherwise need to recreate, reducing risk, cost, and schedule in the development and delivery of our own stellarator fusion magnets.”

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About Commonwealth Fusion Systems

Commonwealth Fusion Systems is the world’s leading and largest private fusion company. The company’s marquee fusion project, SPARC, will generate net energy, paving the way for limitless carbon-free energy. The company has raised more than $2 billion in capital since it was founded in 2018. For more information, visit cfs.energy.

About Type One Energy

Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. Established in 2019 and venture-backed in 2023, the company is led by a team of globally recognized fusion scientists with a strong track record of building state-of-the-art stellarator fusion machines, together with veteran business leaders experienced in scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy. Type One Energy is committed to community engagement in the development and deployment of its clean energy technology. For more information, visit www.typeoneenergy.com.

Media contacts:

For CFS: press@cfs.energy

For Type One Energy: media@typeoneenergy.com