Lightbridge's proprietary next-generation nuclear fuel technology features metallic fuel rods with a helical multi-lobe design that can be used to fuel small modular reactors as well as existing light water reactors and pressurised heavy water reactors. The high burnup of metallic fuel makes it particularly useful for consuming plutonium and reducing the proliferation risk from any residual plutonium: according to a 2018 study published in the peer-reviewed journal Nuclear Engineering and Design, any residual plutonium in the used fuel is "useless" for weapons purposes

Nuclear Technology Journal -'Improved Disposition of Surplus Weapons-Grade Plutonium Using a Metallic Pu-Zr Fuel Design' co-authored by Braden Goddard, of the Department of Mechanical and Nuclear Engineering at Virginia Commonwealth University, and Aaron Totemeier, senior nuclear fuel consultant to Lightbridge.