GE-Hitachi unveils advanced nuclear fuel for boiling water reactors

Global Nuclear Fuel (GNF), a GE Vernova-led alliance with Hitachi, has introduced GNF4, a next-generation nuclear fuel designed for boiling water reactors (BWRs) in the US. Scheduled for initial deployment in 2026 and full availability by 2030, GNF4 features an advanced 11×11 fuel matrix that increases the heat-generating surface area, enhancing uranium utilization and boosting power output. The design incorporates two key components approved by the US Nuclear Regulatory Commission (NRC): Ziron Cladding, which offers superior corrosion resistance and reduces hydrogen pickup compared to traditional Zircaloy 2 cladding, and Aluminosilicate Doped Uranium Dioxide Pellets, providing accident-tolerant protection against pellet-clad interaction (PCI). In addition to these innovations, GNF4 leverages proven technologies such as NSF Channel Material, a zirconium alloy that resists fuel channel distortion, and the Defender+ Debris Filter, which has a strong track