The utility model discloses a simple solar energy heat collection power generating assembly belonging to the solar energy utilization field. The heat collection power generating assembly comprises a side frame, a photovoltaic assembly, a heat collection water tank, and a photovoltaic thermoelectric assembly. The back plate of the photovoltaic assembly is attached to the upper surface of the heat collection water tank by heat conduction adhesive, and an EVA filling layer is disposed between an upper glass cover plate and the back plate, and solar cells are uniformly disposed in the EVA filling layer. The photovoltaic thermoelectric assembly comprises a lower photovoltaic assembly and a temperature difference power generating sheet, and the temperature difference power generating sheet abuts against the lower surface of the heat collection water tank after being pressed by the back plate of the lower photovoltaic assembly, and two sides of the temperature difference power generating sheet are provided with heat conduction adhesive in a filled manner. The photovoltaic assembly, the heat collection water tank, the temperature difference power generating sheet, and the lower photovoltaic assembly are fixed in a laminated manner by the side frame. The simple solar energy heat collection power generating assembly is advantageous in that the structure of the heat collection power generating assembly can be simplified; by adopting the organic combination of the devices, the photovoltaic power generation function, the temperature difference power generation function, and the solar heating function can be realized; the utilization rate of the solar energy can be increased, and the heat collection power generating efficiency can be improved.