This study tackles these challenges by optimizing the configurations of Modular Mobile Battery Energy Storage (MMBES) in urban distribution grids, particularly focusing on capacity-limited areas. . Specific ES devices are limited in their ability to provide this flexibility because of performance constraints on the rate of charge, rate of discharge, total energy they can hold, the efficiency of storage, and their operational cycle life. It is a crucial flexible scheduling resource for realizing large-scale renewable energy. . Mobile energy storage spatially and temporally transports electric energy and has flexible dispatching, and it has the potential to improve the reliability of distribution networks. In this paper, we studied the reliability assessment of the distribution network with power exchange from mobile. . These events are exacerbated by climate change, which increases their frequency and magnitude. Improving power grid resilience can help mitigate the damages caused by these events.