The present disclosure first uses a pumping device to retrieve water using an internal power source from a water source. Then, in accordance with a wind parameter and a solar parameter, wind-powered and solar-powered pumping devices are selectively engaged to replace the pumping device. The water is stored in the water storage device in a higher place. As the water runs through an inlet pipe, it is pressurized to drive a first hydraulic generation device. Then the water's potential energy is used to drive a second hydraulic generation device as the water is recycled to the water source. The produced electricity is delivered to the pumping device and, if any remaining, then to a light device for illumination.