Commonwealth Fusion Systems Lands $85M CHIPS Award for Fusion Semiconductors

Commonwealth Fusion Systems (CFS) will receive $85 million from the U.S. government to develop advanced chips for the fusion power industry, the company announced Thursday.

The award comes from the Department of Commerce under the CHIPS Act. It also grants the government a stake in CFS, the company said. The money will support research, development and manufacturing capacity for semiconductors in the U.S.

Fusion startups are racing to finish their first demonstration devices. CFS aims to turn on its Sparc reactor sometime next year. But one reactor is just a proof point. To build dozens of commercial power plants, fusion companies need more durable power electronics and a robust supply chain.

What will the $85M fund?

The award supports five initiatives at CFS:

• Silicon carbide power electronics. These semiconductors manage high voltages and appear in everything from LEDs and EVs to cell phone base stations and data centers. Fusion machines use them too, where intense bursts of electricity drive the superconducting magnets that confine plasma inside a reactor.
• Next-generation radio-frequency power generators. CFS uses these to heat fusion fuel.
• Radiation-hardened advanced electronics. Faster reactor control electronics, hardened against radiation, could extend the lifespan of components inside a fusion power plant and cut operating costs.
• AI hardware adapted for power plants. CFS plans to adapt AI chips like GPUs and TPUs for use in fusion facilities.

Why does the government get a stake?

The CHIPS Act award structure gives the Commerce Department an equity position in CFS alongside the funding. The company framed the deal as a two-for-one: it boosts U.S. semiconductor and power electronics manufacturing while pulling fusion energy closer to the electrical grid.

Brandon Sorbom, co-founder and chief science officer at CFS, laid out the stakes in a blog post.

"Ultimately, that means a more capable, economical power plant and a stronger U.S. supply chain to build it," Sorbom wrote.

He added: "The funding would help improve the U.S. chip and power electronics industries at the same time it accelerates fusion energy's progress toward the electrical grid."

Why does this matter beyond fusion?

The silicon carbide work touches markets far outside fusion. The same power electronics run EVs, data centers and telecom infrastructure, so manufacturing advances funded by this award could spill into those sectors. The radiation-hardening research addresses a cost problem that has long plagued nuclear-adjacent electronics: components that fail early drive up operating expenses.

The AI hardware initiative signals where fusion plant design is heading. If CFS can adapt GPUs and TPUs for power plant environments, reactors gain computing capacity for control and monitoring built in from the start.

The timing matters. Sparc's targeted startup next year will test whether CFS's magnet-based approach can produce net fusion energy. The CHIPS award positions the company to think past that milestone — toward the supply chain and component durability required for a fleet of commercial plants rather than a single demonstration machine.