Electree City is a tree whose leaves are solar panels. It is composed of modules to be assembled, which can produce an infinite number of different shapes and be transported easily. During installation, you can shape it by turning the modules to optimize the orientation of the solar cells and increase its effectiveness. The energy produced can be used in many ways, either consumed directly (charging electric bicycles, interactive video projection to guide passers, etc ...) or as an addition to existing power grids of a house or a city.