Fusion power startup Commonwealth Fusion Systems has raised $863 million from a long list of investors that includes Nvidia, Google, Breakthrough Energy Ventures, and more.

“We’re continuing our trend here of looking into the world and saying, ‘How do we advance fusion as fast as possible?’” co-founder and CEO Bob Mumgaard told reporters in a call this week. “This round of capital isn’t just about fusion just generally as a concept, but it’s about how do we go to make fusion into a commercial industrial endeavor.”

The Massachusetts-based company has raised nearly $3 billion to date, the most of any fusion startup . Commonwealth Fusion Systems (CFS) previously raised a $1.8 billion round in 2021.

Fusion power has long been promised as a nearly limitless energy source, though it wasn’

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