A solar cell module comprising: a first solar cell (Cell-a) and a second solar cell (Cell-b) connected to each other in a first direction (x) in a cell string, each of the first and second solar cells including a plurality of first electrodes formed on a back surface of a semiconductor substrate, a plurality of second electrodes which are formed in parallel with the plurality of first electrodes on the back surface of the semiconductor substrate, one or more first auxiliary electrodes connected to the plurality of first electrodes, and one or more second auxiliary electrodes connected to the plurality of second electrodes; and an interconnector configured to electrically connect the one or more first auxiliary electrodes of the first solar cell to the one or more second auxiliary electrodes of the second solar cell, wherein the one or more first auxiliary electrodes are electrically connected to the first electrodes through a first conductive adhesive, and the one or more second auxiliary electrodes are electrically connected to the second electrodes through the first conductive adhesive, characterized in that in each of the first and second solar cells, the one or more first auxiliary electrodes include a first auxiliary electrode pad and the one or more second auxiliary electrodes include a second auxiliary electrode pad, wherein the first and second auxiliary electrode pads are formed at opposite ends in the first direction (x) of the back surface of the semiconductor substrate and extend in a second direction (y) crossing the first direction, wherein each of the first and second auxiliary electrode pads includes a first area (PP141-S1; PP142-S1) overlapping the semiconductor substrate and a second area (PP141-S2; PP142-S2) not overlapping the semiconductor substrate and exposed to the outside of the semiconductor substrate, wherein the interconnector is spaced from the semiconductor substrate of each of the first and second solar cells in the first direction (x), wherein the interconnector electrically connects the second area of the first auxiliary electrode pad included in the first solar cell to the second area of the second auxiliary electrode pad included in the second solar cell, wherein the interconnector is electrically connected to the second area of the first auxiliary electrode pad included in the first solar cell using a second conductive adhesive and is electrically connected to the second area of the second auxiliary electrode pad included in the second solar cell using the second conductive adhesive. a first solar cell (Cell-a) and a second solar cell (Cell-b) connected to each other in a first direction (x) in a cell string, each of the first and second solar cells including a plurality of first electrodes formed on a back surface of a semiconductor substrate, a plurality of second electrodes which are formed in parallel with the plurality of first electrodes on the back surface of the semiconductor substrate, one or more first auxiliary electrodes connected to the plurality of first electrodes, and one or more second auxiliary electrodes connected to the plurality of second electrodes; and an interconnector configured to electrically connect the one or more first auxiliary electrodes of the first solar cell to the one or more second auxiliary electrodes of the second solar cell, wherein the one or more first auxiliary electrodes are electrically connected to the first electrodes through a first conductive adhesive, and the one or more second auxiliary electrodes are electrically connected to the second electrodes through the first conductive adhesive, characterized in that in each of the first and second solar cells, the one or more first auxiliary electrodes include a first auxiliary electrode pad and the one or more second auxiliary electrodes include a second auxiliary electrode pad, wherein the first and second auxiliary electrode pads are formed at opposite ends in the first direction (x) of the back surface of the semiconductor substrate and extend in a second direction (y) crossing the first direction, wherein each of the first and second auxiliary electrode pads includes a first area (PP141-S1; PP142-S1) overlapping the semiconductor substrate and a second area (PP141-S2; PP142-S2) not overlapping the semiconductor substrate and exposed to the outside of the semiconductor substrate, wherein the interconnector is spaced from the semiconductor substrate of each of the first and second solar cells in the first direction (x), wherein the interconnector electrically connects the second area of the first auxiliary electrode pad included in the first solar cell to the second area of the second auxiliary electrode pad included in the second solar cell, wherein the interconnector is electrically connected to the second area of the first auxiliary electrode pad included in the first solar cell using a second conductive adhesive and is electrically connected to the second area of the second auxiliary electrode pad included in the second solar cell using the second conductive adhesive.