NEDO and Hitachi Kasei, Hitachi Power Solutions and NGK Insulators have completed a large-scale hybrid storage battery system in Farrel city, Lower Saxony, Germany and will start operation from November 1, 2018. The system consists of two types of storage batteries with different characteristics (lithium ion battery and sodium sulfur battery, total capacity 11.5 MW / 22.5 MWh). By making the system capable of high power, large capacity, chargeable and dischargeable, adjustment of the electricity supply-demand balance will be easier to reach and help to the stabilize input of wind energy into the power grid. A business model of new power trading based on this system will also be developed.

NEDO news release, October 31, 2018