The battery system is to be connected to the Kashiwa-no-ha Area Energy Management System (AEMS) that Hitachi installed in Kashiwa-no-ha Smart City, and will support power pooling, supply-demand fluctuation management, and emergency power maintenance during power cuts. The battery system comprises 13,824 Hitachi Chemical lithium-ion batteries (CH75) provided by Hitachi Chemical, and boasts a number of outstanding features such as a long operating life, large-current charge-discharge, and a high-rigidity structure. Charge-discharge of these lithium-ion batteries is managed through a connection to Hitachi’s 500 kW Power Conditioning System (PCS). The system is able to provide 3.8 MWh of energy making it one of the largest systems in Japan.

Lithium-ion Battery