An electricity supply vehicle is provided with an electricity storage device charged with generated energy of an electric generator driven by an internal combustion engine mounted on the electricity supply vehicle or with regenerated energy of the electricity supply vehicle and is operable to supply electricity to an external equipment located outside of the electricity supply vehicle during stop of the electricity supply vehicle. The electricity supply vehicle includes: a setting unit configured to set expected supply electric energy to be supplied to the external equipment; and a determining unit configured to determine, based on the expected supply electric energy, a target charging amount of the electricity storage device to be charged during running of the electricity supply vehicle.