An electrolyzer is a device that uses electricity to split water into hydrogen and oxygen through a process called electrolysis. It consists of two electrodes—an anode and a cathode—immersed in an electrolyte solution. When an electric current is applied, water molecules are broken down, producing hydrogen gas at the cathode and oxygen gas at the anode. Electrolyzers are essential for producing green hydrogen, which is considered a clean energy source. This hydrogen can be used in various applications, including fuel cells, which power vehicles, and in industrial processes, contributing to a more sustainable energy future.