Abstract: In recent years, distributed photovoltaic capacity has grown dramatically, but distributed photovoltaic is mainly distributed in the vast rural areas, which is deviated from the load center, leading to the significant phenomenon of light abandonment, and the development dividend of new energy fails to popularize the villagers. Microgrids have received widespread attention because they can realize the efficient local consumption of new energy, but they have not been popularized because of the whole life cycle cost, and in recent years, the whole life cycle cost of PV modules and energy storage has been rapidly reduced, and the popularization of microgrids has become economically feasible. In this paper, we build an optimization model with the objective of minimizing the cost of electricity consumption, and simulate it based on the actual load data of a village to obtain the optimal capacity of PV and energy storage equipment to minimize the cost of electricity consumption without back-feeding electricity to the grid, and further analyze the impact of the change in the whole life cycle cost of PV and energy storage on the cost of electricity consumption of village-level microgrids. It has certain reference significance for promoting the development of microgrids from the national level, and provides practical guarantee for village revitalization.