First Light Fusion

First Light Fusion was founded in 2011 with the aim of achieving fusion by the simplest means possible, taking complexity out of the machine and building it into the fuel system. Its FLARE two-stage fusion fuel system is presented as a route to commercial fusion, and the company says fifteen years of capability in fusion physics, simulation, target design, precision manufacturing, diagnostics and experimental validation sit behind it. First Light reports that at Sandia National Laboratories it demonstrated target-based power amplification, and it works with partners across fusion, engineering and academia, with capabilities also serving customers in demanding sectors such as space and defence.

First Light Fusion was founded in 2011 on the conviction that the answer to fusion lies in the fuel system, not the machine. From 2011 to 2024 the company states it proved the science and built deep capability in simulation, design and testing. In 2025 it released the FLARE white paper setting out its two-stage approach to fast ignition and how it makes commercial fusion possible. Today the company describes itself as making commercial fusion possible with FLARE, working with partners across fusion, engineering, academia and beyond, while capabilities built for fusion also serve customers in demanding sectors including space and defence.

Commercial fusion built in partnership, with complexity moved from the machine into the fuel system

• FLARE

  First Light's own two-stage fusion fuel system, which puts more functionality into the fuel system itself to reduce demands on the machine.

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