OPERATION PLANNING SYSTEM AND METHOD FOR CREATING OPERATION PLAN

An operation planning system and an operation schedule planning method are provided which create an operation schedule to attempt reducing an environmental load in consideration of an acceptable range of consumers. A power supply curve S matching one of the patterns of a demand curve D stored in advance is created by combining power generation quantities of various power sources. An environmental load index Ep to a supply quantity indicated by the supply curve S is calculated based on environmental load information stored in advance. Next, reducible quantity information for each power consumption reduction characteristic of each consumer is stored in advance, a necessary reduction quantity to cause the supply curve S to match a predetermined curve is calculated. A reducible supply quantity is calculated based on reducible quantity information, and a reducible index Dp obtained by dividing the reducible supply quantity by the necessary reduction quantity is calculated. Next, the supply curve S is adjusted until it is determined that both environmental load index Ep and the reducible index Dp are within respective certain ranges.