Thea Energy, Inc. announced it has closed a $100 million Series B financing round led by Thomas Tull’s US Innovative Technology Fund. The oversubscribed round included new commitments from General Innovation Capital Partners, Linse Capital, Calm Ventures, Climate Capital, Divergent Capital, Emerald Technology Ventures, Gaingels, Idemitsu Kosan, Overlay Capital, Timescale Ventures, and Whatif Ventures. Existing backers Alumni Ventures, Hitachi Ventures, Lowercarbon Capital, Mercator Partners, Orion Industrial Ventures, Prelude Ventures, and Starlight Ventures also participated.
Headquartered in Kearny, New Jersey, Thea Energy develops stellarator technology aimed at commercial fusion power. The company said the fresh capital will be directed toward expanding its magnet manufacturing capacity - including establishing a second manufacturing facility in Northern New Jersey - and to underwrite construction of Eos, a large-scale integrated stellarator system.
Company leadership outlined parallel operational objectives tied to the financing. Thea Energy said it plans to choose a site for Eos later this year and intends to double its workforce as part of the scale-up enabled by the funding.
"We built Thea Energy to take fusion out of the lab and onto the grid," said Brian Berzin, Co-Founder and Chief Executive Officer. "With the U.S. Department of Energy’s certification of our power plant preconceptual design milestone, proven magnet hardware, best-in-class team, and the capital now in place, we are on the path to delivering the first commercial stellarator power plants."
Thea Energy said it received certification from the U.S. Department of Energy for its Helios preconceptual design milestone, noting it was the first awardee to earn that distinction. The company also reported that it has built and operated the world’s first superconducting magnet array capable of producing the magnetic fields required for commercial stellarator systems.
Looking forward, Thea Energy is working toward beginning construction of its first Helios power plant before the end of the decade. The company said it is in active discussions with more than a dozen potential power offtakers, hyperscalers, and utility partners but did not report executed offtake agreements in the announcement.
Thea Energy was spun out of Princeton University and the Princeton Plasma Physics Laboratory in 2022. The company framed the Series B as a means to transition its technology from demonstrated hardware and preconceptual design milestones toward commercial-scale construction and deployment.
What this means
- The financing provides capital to expand industrial magnet production capacity and to progress a large integrated stellarator project named Eos.
- DOE certification for the Helios preconceptual design milestone and demonstrated superconducting magnet hardware are cited by the company as key technical milestones underpinning the program.
- The firm is actively engaging potential customers and partners while preparing to select a site for Eos and increase headcount.