Toshiba announced Japan's largest lithium-ion energy storage system - 40 MW and 40 MWh.
40 MWh is like 1,500 electric cars and of couse full power of 40 MW can be provided for up to one hour.
Construction work already began and this large scale battery, consisting of Toshiba's SCiB cells, will go live in February 2016.
The order for the ESS was placed by Tohoku Electric Power Company to improve supply-demand balance of renewable energy.
"In the Minami-Soma Project, the BESS improves the balance of renewable energy supply and demand. The system stores surplus electricity when supply of renewable energy, whose output fluctuates with weather conditions, exceeds demands, and releases the stored electricity at times of high demand.
Toshiba supplied 40MW-class BESS to Tohoku Electric Power Company for Nishi-Sendai Project in 2014 to regulate frequency changes caused by power output fluctuations. A high evaluation on technical performances of SCiB™, including safety and charge-discharge efficiency, resulted in the order for Minami-Soma Project.
Overseas, Toshiba has supplied BESS to several projects: to subsidiary of Terna S.p.A., an Italian transmission company; for a collaboration with Spain’s Gas Natural Fenosa in an on-site verification testing program for a transportable lithium-ion BESS; and for a large-scale commercial BESS for frequency regulation project in the USA, scheduled to start operation in December this year. Toshiba has also supplied SCiB™ for a 2MW energy storage system project led by the University of Sheffield in the UK."