We have evaluated annual change of the power generation of the solar module installed on the wall of the actual operating building. According to this evaluation, the power output of the solar module installed on the wall surface tends to increase in winter and decrease in summer on the southeast and southwest faces facing south, while on the northeast surface facing north, the power output in winter decreases and power output in summer tends to increase. From these results, we can demonstrate that it is possible to supplement the amount of power generation in winter or morning and evening hours, which decreases with modules installed horizontally on the roof of the building and provide a more stable power generation throughout the year by installing PV modules throughout the building where it is actually in operation.
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