Fuse is a fusion-energy and nuclear-effects testing company that develops pulsed-power systems, including TITAN, Z-STAR, APEIRON I, FAETON, and ICECAP, to support hardened electronics and radiation testing and to advance a commercial fusion pathway. Its website says the first phase of its work is hardened electronics and radiation testing, and it highlights use cases tied to U.S. defense and national-security customers, including the U.S. Air Force, Space Force, and National Nuclear Security Administration. The company’s technology is centered on pulsed-power and MagLIF-related fusion hardware, and it says it has already built and operated multiple neutron-producing fusion generators. Fuse was founded in 2019 by J.C. Btaiche, who is the founder and CEO; its advisory board includes Lisa G. Hagerty, Wendy R. Anderson, Maura Burns, David Cattler, Bill Crowell, Greg Dahlberg, Doug Greenlaw, Amy Kurren, and Dr. Austin Long. It has also publicly announced a CRADA with Los Alamos National Laboratory and describes a federal-facing subsidiary led by James Owen.