Thea Energy lands $20M federal grant to build its magnets for fusion reactors

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1:40 PM PDT · July 27, 2026

For hard-tech startups, manufacturing is a pricey endeavor. Now, Thea Energy has a leg up courtesy of a Department of Energy grant.

The fusion power startup told TechCrunch Monday that it has received a $20 million award from ARPA-E to help manufacture its modular high-temperature superconducting (HTS) magnets.

HTS magnets are costly but important components in any magnetic confinement reactor, one of the two main ways startups are attempting to harness fusion power for commercial purposes. In magnetic confinement reactors, powerful magnetic fields contain and compress plasma, helping to heat the particles until the fuel can fuse and release large amounts of energy.

Thea’s reactor is based on a design known as a stellarator. Stellarators look like inner tubes that have been twisted and squeezed in ways that help it confine the plasma more effectively. Most stellarators use magnets that are built to...

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