Over the last several years, fusion power has transitioned from a distant goal to an increasingly tangible technology. Investors have taken notice, with startups like Commonwealth Fusion Systems (CFS) raising billions of dollars to bring commercially viable fusion power plants online. CFS's latest round added $863 million to its coffers, bringing its total to over $2 billion.
Several other companies are also making progress in the field. Tokamak Energy is developing a compact tokamak design that uses high-temperature superconducting magnets, while Zap Energy is using an electric current to generate a magnetic field and compress plasma. Type One Energy plans to build a fusion reactor on the site of a retired coal power plant.
In contrast, some startups are taking more unconventional approaches. First Light Fusion uses inertial confinement, firing a projectile at a target to compress hydrogen fuel. Xcimer is building a 10-megajoule laser system, five times more powerful than the National Ignition Facility's setup.
While these companies make progress, challenges remain. Achieving sustained fusion reactions and scaling up production are significant technical hurdles that must be overcome. Nonetheless, the momentum behind fusion research is growing, with governments and private investors pouring money into the field.
Some notable funding rounds include:
- CFS: $863 million
- Tokamak Energy: $125 million
- Zap Energy: $100 million (partial pivot to hybrid power plant)
- Type One Energy: $269 million
- Proxima Fusion: €130 million
- Kyoto Fusioneering: $191 million
Investors in the field include Bill Gates' Breakthrough Energy Ventures, DCVC, Lowercarbon, and Chevron Technology Ventures.
