A roof tile (1) of a house is provided with a recess (2) in its upper surface to receive a solar cell module (6). At least one side of the recess (2) has a connection part (9) that consists of an undercut U-groove. The edge of the solar cell module (6) is fitted into the connection part (9) such that the solar cell module (6) can be attached detachably in the recess (2) of the roof tile (1).
