Energy calculating apparatus

An energy consumption predicting apparatus comprising:

• an energy information retaining unit which retains therein reference energy information which represents reference energy defined by an amount of energy expected to be required by a vehicle to move along a selected travel route;
• an energy information generator which generates actual energy information which represents actual energy defined by an amount of energy actually used by a target vehicle when the target vehicle has moved along the selected travel route, the target vehicle being a vehicle whose consumption of energy is required to be predicted;
• and
• a correcting unit which works to calculate a deviation parameter which represents a deviation of the actual energy from the reference energy,
• the correcting unit deriving a correlation factor that is a function of a correlation between an amount of energy actually consumed by a vehicle to move from a reference location to a first location and an amount of energy actually consumed by a vehicle to move from the reference location to a second location,
• when the correlation factor is higher than a given value, the correcting unit determining the second location as a correction location and determining a correcting parameter as a function of the deviation parameter derived at the correction location,
• the correcting unit correcting the reference energy using the correction factor to produce predicted energy information representing an amount of energy predicted to be consumed by the target vehicle until a target location that is the first location is reached.