A modular base station that integrates photovoltaic power, wind power, and battery storage contributes to the stability of power supply for communication base stations, smart cities, transport systems, industrial sites, and more, under poor conditions of the power grid. The main loads of those small base station are 48V with rated 500W power more or less, the daily power consumption is about 12kwh. This will provide a stable 24-hour uninterrupted power supply for the base stations.