A 500kWh BESS is a behind-the-meter energy storage system designed to provide controllable charge/discharge power with roughly 500 kWh-class energy, packaged as standardized cabinet modules integrated with BMS, protection, and site controls (EMS), and paired with either PCS or. A 500kWh BESS is a behind-the-meter energy storage system designed to provide controllable charge/discharge power with roughly 500 kWh-class energy, packaged as standardized cabinet modules integrated with BMS, protection, and site controls (EMS), and paired with either PCS or. A 500kWh BESS is most commonly delivered as a two-cabinet energy block—typically 2 × 261kWh cabinets—because it is simple to deploy, predictable to commission, and easy to scale into larger fleets. At this capacity, the key question is rarely the kWh number itself; it is which operating. CTS High Voltage LiFePO4 BESS delivers 215-500kWh scalable storage, 90% DoD, 8000 cycles, and >88% efficiency. Liquid/air cooling, IP54, -20°C~50°C operation. Request ROI analysis or technical demo today. High Voltage Industrial Commercial Energy Storage Battery System. Battery Energy Storage System (BESS) container is a specialized, modular unit designed to house and operate large-scale battery storage systems. These containers are typically used in applications ranging from grid energy storage and renewable energy integration to backup power and commercial solar. Choose from 250kW up to 500kW total PCS power ratings and capacities ranging from 500kWh to 2200kWh. All-in-one design contains battery racks, PCS, EMS, HVAC, UPS, controls, networking, fire suppression system and redundant safety systems within the container. Compact and scalable with modular 19” rack-mount design it can be.