The direct current (DC) output of battery energy storage systems must be converted to alternating current (AC) before it can travel through most transmission and distribution networks. . Battery energy storage systems (BESSs) play an important part in creating a compelling next-generation electrical infrastructure that encompasses microgrids, distributed energy resources (DERs), DC fast charging, Buildings as a Grid and backup power free of fossil fuels for buildings and data. . The xStorage battery energy storage system (BESS) optimizes energy usage and supports energy storage, electric vehicle integration and grid modernization. In the event of a utility power interruption, the xStorage BESS provides an environmentally friendly backup, reducing reliance on traditional. . Energy storage supports the electric grid by storing excess power – such as midday solar – and delivering it when generation is low, including during cloudy days or calm, windless periods. discharging the electricity to its end consumer.