To provide a mounting structure for a photovoltaic power generator which is set on a roof in a manner imbricately overlapping solar battery modules, the mounting structure overcoming inconveniences such as interference of the modules with roof tiles, an increased gap between the roof tile and the module, and degraded appearance of the roof, by making the height of the solar battery module variable at an eaves edge.

The photovoltaic power generator is formed of the solar battery modules, bearing members, and bearing fittings. Each bearing member is formed of a ridge-side fixing portion, and a guide portion forming an inclination angle with respect to a roof surface, and each bearing fitting is formed of a fixing portion, a support portion, and a bearing portion. Then by engaging the bearing portion of the bearing fitting with the guide portion, and by changing a distance between the ridge-side fixing portion and the bearing fitting, the height of the solar battery module at the eaves edge is made variable. Further by forming steps on an inclined surface of the guide portion, the bearing portion of the bearing fitting is stably fixed. Besides by forming a plurality of engaging portions different in length on the bearing fitting, a height adjustable range of the mounting structure is extended.