Abstract: A solar power system includes an enclosure (230) for a power converter (120) that can be mounted adjacent to the solar panel (110), wherein the enclosure (230) is configured to allow a substantial air space (240) between the solar panel (110) and the power converter (120). The surface (232) of the enclosure (230) that is exposed to the solar energy comprises highly solar-irradiation-resistant material, to minimize the solar heating of the power converter (120), and vents (231) are provided in the enclosure (230) to facilitate airflow through the air space (240). Preferably, a thermal efficient housing (250) is provided to contain the power converter (120), to facilitate the transfer of heat from the power converter (120) to the air space (240). The housing (250) may also be configured to be weather-tight, to protect the components of the power converter (120).