An Update from Commonwealth Fusion Systems (December 2024)

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We’re ramping up our commercialization work at Commonwealth Fusion Systems (CFS). In the newest of our twice-yearly video updates, CEO Bob Mumgaard details the importance of choosing a site in Chesterfield County, Virginia, for our first fusion power plant, ARC. Putting watts on the grid in the early 2030s is a big step in our long-term plan to bring our clean, zero-carbon fusion energy to the world.

Here’s the look from inside CFS at what else has happened in the past six months. We have:

- Completed the manufacture of more than half of the toroidal field (TF) magnet “pancakes” we need for our first tokamak, SPARC
- Begun making our first poloidal field (PF) magnet, a pulsed-power design
- Finished manufacturing and testing our Central Solenoid Model Coil (CSMC) magnet, proving out our pulsed magnet technology

We’ve hit our peak manufacturing velocity at our Magnet Factory here in Devens, Massachusetts. And two key tokamak components, the cryostat base and vacuum vessel, are due soon at our headquarters that we moved into two years ago. This video offers some first looks at that hardware.

The next step is assembling the SPARC tokamak, our first fusion machine. Two orange stands in Tokamak Hall await the first TF magnets, and supporting subsystems for heating, power, and cooling are rapidly arriving in the building around Tokamak Hall.

We’re also sharing some first or early looks at new hardware, including of our magnet-testing cryostats and one of our welding robots in action.

2024 was a big year for CFS. Stay tuned as SPARC’s fusion hardware comes together in 2025.
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Commonwealth Fusion Systems is the world’s leading and largest private fusion company. The company’s marquee fusion project, SPARC, will generate net energy, paving the way for limitless carbon-free energy through the world's first grid-relevant fusion energy power plant, ARC. The company has raised more than $2 billion in capital since it was founded in 2018.

Follow along as we push forward to delivering fusion energy to power the world’s energy transition. #fusionenergy

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