CFS Secures Federal Chip Funding

Commonwealth Fusion Systems secured an $85 million federal award on Thursday to advance semiconductor technology for the fusion power sector.

The Department of Commerce allocated the funds under the CHIPS Act, a move that also grants the U.S. government an equity stake in the company. Management stated that this capital injection will bolster research and development efforts while expanding domestic manufacturing capabilities for specialized chips.

This financial commitment arrives as fusion startups compete to complete their initial demonstration units. CFS is currently targeting the activation of its Sparc reactor in the coming year. While a single operating reactor serves as a critical proof of concept, companies aiming to construct dozens of commercial facilities require more robust power electronics and a reliable supply chain.

Brandon Sorbom, co-founder and chief science officer, noted in a blog post that the goal is to create a more capable and economical power plant supported by a stronger U.S. supply chain.

The awarded funds will be distributed across five specific initiatives. The primary focus is the advancement of silicon carbide power electronics. These semiconductors are already widely used to manage high voltages in products ranging from LEDs and electric vehicles to cell phone base stations and data centers. In fusion machines, they manage the intense electrical bursts required to drive the superconducting magnets that confine plasma within the reactor.

Additional projects include the development of next-generation radio-frequency power generators used to heat fusion fuel. The company is also working on advanced electronics that allow for faster reactor control and are hardened against radiation. CFS stated that these radiation-resistant components could extend the lifespan of internal parts, thereby reducing long-term operating costs. A final initiative involves adapting AI hardware, such as GPUs and TPUs, for use in power plant operations.

Sorbom emphasized that this funding will improve the U.S. chip and power electronics industries while simultaneously accelerating the progress of fusion energy toward the electrical grid.