A solar cell with an electrode lead-out structure that a unitary cell to be easily mounted on and removed from a connection side substrate is provided. A solar cell has a power generation electrode including a transparent electrode, a collector electrode, and a power generation layer formed on a translucent substrate and is arranged opposite an opposite electrode so that the power generation layer is sandwiched between the power generation electrode and the opposite electrode. A through-hole is formed in a substantially central portion of the translucent substrate. Another through-hole is formed in another substrate and its periphery forms an annular exposed portion that does not overlap the opposite electrode. A lead-out portion for the collector electrode is formed on the exposed portion. Metal thin films are connected together to form lead-out portions. Thus, a positive electrode and a negative electrode are led out in the same direction.