According to the embodiment, there is provided a solar cell apparatus. The solar cell apparatus includes a back electrode layer on a substrate, a light absorbing layer on the back electrode layer, a buffer layer on the light absorbing layer, a front electrode layer on the buffer layer, and a connection part making contact with the front electrode layer, passing through the light absorbing layer, and making contact with the back electrode layer. The connection part includes a material different from a material constituting the front electrode layer.