Second wiring member includes a first wiring-member piece electrically connected to one of the solar cells of one of the adjacent solar cell strings, and a second wiring-member piece electrically connecting the first wiring-member piece to another one of the solar cell strings. First wiring-member piece includes wiring electrically connecting the solar cell and the second wiring-member piece to each other, a first insulating layer covering part of a surface of the wiring on a solar-cell side, and a second insulating layer covering part of a surface of the wiring on a side opposite from the solar cell. First portion of the wiring is exposed from the first insulating layer. Second portion of the wiring is exposed from the second insulating layer. First portion of the wiring is electrically connected to the solar cell, and the second portion of the wiring is electrically connected to the second wiring-member piece.