ENERGY CALCULATING APPARATUS

An energy consumption predicting apparatus stores reference energy defined by an amount of energy required by a vehicle to move on a selected route and provides actual energy defined by an amount of energy actually used by a target vehicle. The apparatus includes a correcting unit which calculates a deviation of the actual energy from the reference energy and derives a correlation between amounts of energy actually consumed by a vehicle to move from a reference location to a first location and from the reference location to a second location. When the correlation is higher than a given value, the correcting unit determines the second location as a correction location, determines a correcting parameter as a function of the deviation derived at the correction location, and corrects the reference energy using the correction to predict an amount of energy consumed by the target vehicle until a target location is reached.