A power generation control device enables to conduct appropriate charge control and load limitations even if a technique (charge control technique) for restricting power generation by a generator in an accelerating state of a movable body is adopted in a movable body such as a vehicle in which a technique (load limiting technique) for imposing limitations on a power supply when a quantity of suppliable electricity decreased has been adopted. The power generation control device for controlling a generator for a movable body which stores electric power in a battery comprises a unit for restricting power generation by the generator based on a battery suppliable current which can be taken out of the battery, a quantity of electricity generated by the generator, an essential supply current consumed by an electric load to which electric power must be supplied and a load working current consumed by an electric load which does not necessarily require a power supply.