They must use electricity supplied by separate electricity generators or from an electric power grid to charge the storage system, which makes ESSs secondary generation sources. ESSs use more electricity for charging than they can provide when discharging and supplying. . What equipment does an energy storage power station need? Energy storage power stations require a variety of specialized equipment to ensure efficient and reliable operation. Energy storage technologies, 2. These facilities require efficient operation and management functions, including data collection capabilities, system control, and management capabilities.