HYZER® Electrolyzer Stacks: Achieving ultra-low energy consumption of 4.1 kWh/Nm³ @ 2.0 A/cm² (80 μm) at high current densities, combined with a wide power load flexibility (10–120%, with hydrogen concentration in oxygen ≤0.20%) and high consistency (maximum voltage deviation ≤35 mV @ 2.0 A/cm²).