Analysis
Commonwealth Fusion Systems said Thursday it has won an $85 million award from the Department of Commerce under the CHIPS Act, with the unusual twist that the grant gives the federal government an equity stake in the company, according to TechCrunch. The money is earmarked for silicon carbide power electronics, next-generation radio-frequency heating equipment, and radiation-hardened reactor control systems -- components CFS says it needs before its Sparc demonstration reactor is expected to switch on next year.
CFS, spun out of MIT in 2018 with an initial round backed by Temasek, has become the best-funded fusion startup in the world. It raised a $1.8 billion Series B in 2021, an $863 million round in 2025, and another $1 billion in equity this past July, bringing its total capital raised to roughly $4 billion even before this latest government award, a figure the company itself has confirmed.
## Fusion's Government Money Moment The CHIPS Act has mostly gone to chipmakers like Intel and Micron, so an equity-for-grant deal with a fusion company is a new category. It echoes the government's 2025 move to take a stake in Intel in exchange for CHIPS funding and its deal this year taking an equity position in rare-earth miner MP Materials. CFS competes for capital and attention with Helion Energy, which has raised more than $1.5 billion -- including a $465 million Series G in June 2026 at a $15.5 billion valuation led by Thrive Capital -- and holds a Microsoft power-purchase agreement targeting 2028. Pacific Fusion, which closed a $900 million Series A in October 2024 backed by General Catalyst, Eric Schmidt and Reid Hoffman, is the other well-capitalized rival racing toward a working reactor.
“CFS, spun out of MIT in 2018 with an initial round backed by Temasek, has become the best-funded fusion startup in the world.”
An $85 million grant is a rounding error against CFS's roughly $4 billion equity base, but the dollar amount isn't really the point -- it's the government choosing to hold a stake rather than simply write a check, the same structure now spreading from chips to critical minerals to, apparently, fusion power.
The risk: CHIPS equity stakes have drawn criticism for diluting existing shareholders and for giving Washington leverage over commercial decisions, and the underlying bet -- that any of these reactors actually generates net electricity on schedule -- remains unproven. CFS's own Sparc machine has already slipped past earlier target dates before landing on "next year."
Whether that government stake becomes a model other fusion and hard-tech startups chase, or a one-off, likely depends on whether Sparc actually turns on in 2027.
