Energy demand forecasting system and energy demand forecasting method

摘要

[Problem] To predict demand under circumstances in which continuous total contracted demand characteristics vary within a short time period. [Solution] This energy demand predicting method is configured in such a way that: sets of demand pattern generation data for each of one or more preset combinations of a contracted demand granularity and a time granularity are generated on the basis of actual energy demand information for a default historical period; a demand type is generated for each set of demand pattern generation data; an energy demand at a default historical date and time is calculated as a predicted value for evaluation, for each demand type; a contracted demand granularity and a time granularity are determined on the basis of the predicted value for evaluation for each demand type and the actual energy demand information, in such a way as to minimize an error between an estimated value or a predicted value of energy demand at a historical date and time, and the actual observed value at said date and time; and the energy demand value at an arbitrarily defined date and time is estimated or predicted on the basis of the determined results.