Sam Altman · Google · Donald Trump · TechCrunch AI
Commonwealth Fusion Systems (CFS) has locked in about a third of all private capital backed fusion companies to date
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CFS’s Series B2 came four years after its $1.8 billion Series B, which helped catapult the company into the pole position.
Key facts
- TAE would receive $200 million plus another $100 million upon filing paperwork with the Securities and Exchange Commission
- The Massachusetts-based CFS expects to have Sparc operational in late 2026 or early 2027
- In December 2025, TAE announced that it would merge with President Donald Trump’s social media company, Trump Media & Technology Group
- The company raised $425 million in January 2025, around the same time that it turned on Polaris, a prototype reactor
Summary
Over the last several years, fusion power has gone from the butt of jokes, always a decade away!, to an increasingly tangible and tantalizing technology that has drawn investors off the sidelines. The technology may be challenging to master and expensive to build today, but fusion promises to harness the nuclear reaction that powers the sun to generate nearly limitless energy here on Earth. The bullish wave buoying the fusion industry has been driven by three advances: more powerful computer chips, more sophisticated AI, and powerful high-temperature superconducting magnets. It doesn’t hurt that, at the end of 2022, a U.S. Department of Energy lab announced that it had produced a controlled fusion reaction that produced more power than the lasers had imparted to the fuel pellet. Founders have built on that momentum in recent years, pushing the private fusion industry forward at a rapid pace.