Which energy is cause for glowing of bulb in electrolytic cell?

In the electrolytic cell, the chemical energy is converted into electrical energy.

Hence, the electrical energy produced by the chemical energy is the main cause for glowing of bulb in electrolytic cell.

Example: A battery has chemical energy and when it is placed in torch, the chemical energy converts into electrical energy. As a result, the bulb of the torch starts to glow.