Electrical energy is the power an atom's charged particles have to cause an action or move an object. The movement of electrons from one atom to another is what results in electrical energy.
Every time you plug a toaster or cellphone charger into a wall outlet, electrical energy is powering those devices. Examples of this kind of energy are also seen in electric eels, lightning, and batteries. But electrical energy doesn't just generate electricity — it can also be converted into other kinds of energy, like the thermal energy that heats up your toaster and toasts your bread, or the mechanical energy that makes an electric car move fast.