Abstract: A clean energy power supply system includes a container, a thermal insulation wall, a power-generation device, a power-conversion device, and a power-distribution device. The container has an internal space and a rear door. The thermal insulation wall is located in the internal space and adjacent to the rear door. The power-generation device is disposed in an accommodating space of the container and configured to generate a clean power. The power-conversion device is disposed in the accommodating space and configured to convert the clean power into a converted power. The power-distribution device is disposed in the accommodating space and configured to output the converted power to an external load or an external power grid. The thermal insulation wall is configured to block external airflow flowing through the rear door so as to maintain the temperature of the accommodating space.

Abstract: A clean-energy power supply system is coupled between a power supply and a load. A first power generation device is configured to provide a renewable voltage. A power transformation device transforms the renewable voltage according to a first selection signal to generate a first transformed voltage or a second transformed voltage. A switch selectively transmits the first transformed voltage and the external voltage provided by the power supply to the load or transmits the second transformed voltage to the load. When the external voltage is not less than a predetermined value, the power transformation device generates the first transformed voltage and the switch transmits the first transformed voltage and the external voltage. When the external voltage is less than the predetermined value, the power transformation device stops generating the first transformed voltage and generates the second transformed voltage and the switch transmits the second transformed voltage.