This paper emphasizes the information discovery. We reveal many uncertainties in the power market by drawing several simple diagrams. By depicting the main factors influencing the power demand and supply, this paper builds up some snapshots for the power authority. Counting on our power demand and supply diagrams, the authority can easily capture the reliability degree of the power system. In order to illustrate more clearly, we use the case in Taiwan to draw our pictures. From our diagrams, it is clear to find the power supply reliability drops down significantly with the larger share of renewable energy.
