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Abstract: Renewable energy is an energy source that contributes to the improvement of Japan's energy self-sufficiency rate due to greenhouse gas emission control. In Japan, photovoltaic (PV) regardless of the installation location is rapidly spreading for both residential and non-residential homes due to the introduction of Feed-in Tariff (FIT) and the reduction of the introduction price. On the other hand, PV is susceptible to the rapid weather changes, which may affect the balance of power supply and demand. Therefore, the electricity supplier needs to maintain the stability of the power while considering the photovoltaic power generation. The total amount of power generation is adjusted by between the dynamic PV power generation and demand. Thus, our research team has simulated the solar radiation simulation system considering the influence the shadows of buildings/trees using the Geographic Information System (GIS), superimposing a solar surface-based Digital Surface Model (with elevation information). Furthermore, this work combined the previous research with all-sky images taken by an omnidirectional camera using a fisheye lens. Consequently, it has been constructed a new method to capture the effects of clouds based on the amount of solar radiation. The purpose of this research is to propose a new method to predict clouds movement using an omnidirectional camera image.

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