Abstract: The invention relates to a solar power system comprising a plurality of mounting supports (50), a plurality of photovoltaic modules (1) mounted on the mounting supports (50), a plurality of holding elements (60, 100) for holding the photovoltaic modules (1) on the mounting supports (50) and a plurality of electric connecting elements (60) for electrically interconnecting the photovoltaic modules, and wherein the electric connecting elements (60) comprise two electrically contacting connecting plugs (40-43, 70-74) which can be plugged together and which are designed such that they are plugged together with the mounting movement of the respective photovoltaic module when mounting it on a mounting support (50).