This blog reported before about energy storage that absorbs or delivers energy to the grid at intervals of five seconds. The frequency regulation system uses thousands of lithium-ion batteries.”
Now Green Car Congress reports on “Japan’s first cargo container-type large-capacity energy storage system using Li-ion batteries.” Mitsubishi Heavy Industries, Ltd. has developed a system capable of providing power of up to one megawatt (MW)
Its mobility makes the system suitable for a wide range of applications, including emergency use. The actual system has been installed at the Nagasaki Shipyard & Machinery Works of MHI in Nagasaki Prefecture, Japan, to begin verification testing for a power stabilization system application from early July towards the commercialization of the system.
The container-type “megawatt-class large-capacity energy storage system (ESS)” consists of a 40ft-long container unit, which houses more than 2,000 units of lithium-ion rechargeable batteries, and a 20ft-long container unit, in which two power conditioners are installed. Power conditioners are used for direct current (DC)/alternating current (AC) conversion and their input/output control. Each container unit can be moved by container trailers. The system has a capacity of 408 kWh and is designed to have a system efficiency of 90%.
