A generating system includes a first generating device (1) and a second generating device (2). The first generating device includes a housing (11), a solar cell panel (12), a storage unit (13), a heat conduction layer (16), a heating chamber (14) and a plurality of water pipes (15). The second generating device includes an impeller (21), a propeller shaft (22) and a generator (23). Thus, the first generating device can receive the solar energy to produce an electric power, and the second generating device is driven by the wind power and the water power to generate an electrical energy so that the generating system can use the natural resources to produce an electrical energy at the day and the night so as to enhance the generating efficiency of the generating system.