A target supply apparatus configured to melt a target and supply a molten target into a chamber, the target generating extreme ultraviolet light when the target is irradiated with a laser beam in the chamber, may include: a pair of electrodes spaced from one another and configured to sandwich the target; and a power source configured to supply a current to a solid target sandwiched between the pair of electrodes via the pair of electrodes to melt the solid target to a core of the solid target.