This pairing forms the basis of the Sodium-Sulfur (NaS) battery system, engineered specifically for stationary, utility-scale applications where high capacity and long operational life are prioritized over portability. Sodium, the sixth most abundant element on Earth, is an attractive, low-cost material for industrial applications. Sulfur is also highly available, providing a pairing that avoids the supply chain. . The C&I ESS Battery System is a standard solar energy storage system designed by BSLBATT with multiple capacity options of 200kWh / 215kWh / 225kWh / 245kWh to meet energy needs such as peak shifting, energy back-up, demand response, and increased PV ownership. Battery Quantity in Parallel: 5 (in a BMS system) Cycle Life: >6000 Times. Additionally, this energy storage system supports. . What Exactly Is a 200 kWh Energy Storage Battery? Think of it as a power bank on steroids. These systems offer the flexibility to store and release significant amounts of electrical energy, providing solutions to various. .