Battery energy storage systems can enable EV fast charging build-out in areas with limited power grid capacity, reduce charging and utility costs through peak shaving, and boost energy storage capacity to allow for EV charging in the event of a power grid disruption. . Battery energy storage systems can enable EV fast charging build-out in areas with limited power grid capacity, reduce charging and utility costs through peak shaving, and boost energy storage capacity to allow for EV charging in the event of a power grid disruption. . Battery storage is a technology that enables power system operators and utilities to store energy for later use. It is an informative resource that may help states, communities, and other stakeholders plan for EV infrastructure deployment, but it is not intended to be used. . The worldwide ESS market is predicted to need 585 GW of installed energy storage by 2030. Massive opportunity across every level of the market, from residential to utility, especially for long duration. No current technology fits the need for long duration, and currently lithium is the only major. . stations have expe-rienced rapid growth, whose impacts on the power grid have become non-negligible. Though charging stations can install en-ergy storage to reduce their impacts on the grid, the conventional “one charging stat on, one energy storage” method may be uneconomic l due to the high. . To optimize the grid fluctuation and safety issues caused by high penetration charging of electric vehicles, a novel distribution network capacity planning model is proposed.