Abstract
Load factors of power systems are decreasing in these days. Under the circumstances, it is considered that “load management” is an effective method to cut down the production cost of electricity. On the other hand, the introduction of energy storage equipments increases the load factor. It can be said that “load management” has almost similar effect as “energy storage”. When “load management” and/or “energy storage” is considered to be introduced, it is very important to estimate the effect of each method on the production cost. Since each area has its own load profile, the effect of “load management” or “energy storage” on the area is different from that on the other area. In this paper, the relationship between the improvement of the production cost and the load profile is discussed. It is found that “load management” is more effective on the area which has small load factor and large kWh operation factor and “energy storage” is more effective on the area which has small skewness of load profile.
