Slashing CO2

Founded: 2017

HQ: Cambridge, MA

Plasma-taming fusion magnets.

Big Picture

Fusion, the power of the stars, is the holy grail of clean energy: limitless, dispatchable, concentrated, and carbon-free. Unlike conventional nuclear, there is inherently no risk of meltdown, proliferation, or waste. Since the dawn of the nuclear age scientists have sought to harness fusion, yet achieving net energy gain—where the reactor puts out more energy than it needs to run it—has proven elusive.

How It Works

Fission splits atoms, whereas fusion joins them. However, the immense pressure and energy needed to generate a 100m°C plasma where these reactions occur are extremely difficult to sustain. Whereas other efforts seek to produce the conditions for fusion by building bigger magnets, CFS is making far more powerful ones that will confine this star-like plasma and harness its power. 

Unfair Advantage

What gives CFS the surest path to commercial fusion is the combination of proven tokamak physics with breakthrough magnet technology. They have developed new, high-temperature superconducting tape to build the world’s most powerful magnets. This enables 60x smaller, more affordable reactors that accelerate the path to commercial fusion energy in time and on a scale to make a difference. 


Gigatons of CO2e

potentially avoided by 2050


Bob holds a PhD in applied plasma physics and a Master’s in nuclear science and Engineering from MIT.


Dan holds a PhD in applied plasma physics from MIT, where he also did his Postdoc.

Brandon Sorbom CSO & CO-FOUNDER

Brandon holds a PhD in nuclear science and engineering from MIT, where he also did his Postdoc.

Compact Nuclear Fusion Reactor Is ‘Very Likely to Work,’ Studies Suggest

New York Times

In search of clean energy, investments in nuclear-fusion are heating up


This MIT Project Says Nuclear Fusion Is 15 Years Away (No, Really, This Time)

Fast Company

MIT launches multimillion-dollar collaboration to develop fusion energy