Hydrogen peroxide (H₂O₂) is an oxidizing agent commonly used for various applications and is available in aqueous solution in a wide range of concentrations. This work describes the H₂O₂ electrogeneration process in alkaline medium (KOH 1.0 mol L⁻¹), using an unmodified gas diffusion electrode (GDE) manufactured with Printex 6L carbon. The experiments were performed in a single‐compartment electrochemical cell equipped with a GDE as the working electrode, which was fed with N₂ or O₂ at a pressure of 0.2 bar. Electrolysis experiments were performed at a constant potential (−0.5≤E≤−1.4 V) for 90 min. The H₂O₂ concentration reached a maximum value of 3370 mg L⁻¹ at −1.1 V (vs. Ag/AgCl), and H₂O₂ electrogeneration followed pseudo‐zero‐order kinetics with an apparent rate constant k_app=59.7 mg L⁻¹ min⁻¹. A low energy consumption of 8.0 kWh kg⁻¹ was calculated for these electrogeneration conditions.