The solar cell module comprises: a string including solar cell elements, each including a first main surface being rectangular in shape and an electrode extending along a longitudinal direction on the first main surface, and an interconnection connecting the solar cell elements adjacent to each other along the longitudinal direction; a light-transmitting member located to cover the string; and a sealing material located between the string and the light-transmitting member. Each of solar cell elements includes a silicon substrate with the first and second main surface, and a first and second side surfaces each connecting the first and second main surface, the second side surface being located on the back side of the first side surface. The first and second side surfaces are arranged along the longitudinal direction, where silicon is exposed on the first side surface and the second side surface is covered with an insulating layer.