First Light Fusion
Updated: September 12, 2026
Founder Nicholas Hawker
Country: UK | Funding: $107M (+)
Website: https://firstlightfusion.com/
First Light Fusion (FLF) develops Inertial confinement fusion reactor that can produce power. It's powered by two-stage fusion fuel system FLARE that combines efficient compression with fast ignition to enable a simpler, more scalable path to fusion power. The standard fusion fuel, deuterium-tritium, is wrapped in a dense, heavy pusher. The driver pushes it inward, squeezing like a fist to make it hundreds of times denser than it started. When the fuel is compressed, a separate pulse ignites one small region. That spark spreads outward as a self-sustaining burn, like a fuse running through a much larger charge.
Website: https://firstlightfusion.com/
First Light Fusion (FLF) develops Inertial confinement fusion reactor that can produce power. It's powered by two-stage fusion fuel system FLARE that combines efficient compression with fast ignition to enable a simpler, more scalable path to fusion power. The standard fusion fuel, deuterium-tritium, is wrapped in a dense, heavy pusher. The driver pushes it inward, squeezing like a fist to make it hundreds of times denser than it started. When the fuel is compressed, a separate pulse ignites one small region. That spark spreads outward as a self-sustaining burn, like a fuse running through a much larger charge.
