A solar module for greenhouse includes a plurality of non-light transmitting solar panels, installed at the top of a greenhouse and arranged vertically and horizontally to form a roof tilted in a particular light receiving direction. A planting area for growing plants is formed inside of the greenhouse and the roof separates the planting area from outside air. Thus, an integrated structure of solar panels and greenhouse is formed to save the construction expense for solar panels and greenhouse and to increase the efficiency for solar panels to receive sun radiation.
