At around 7:20 am on September 21, a fire broke out at NAS (Sodium- Sulfur) battery for power storage (Rated output: 2,000kW) which was installed by us at the premises of Tsukuba Plant (Joso-shi, Ibaraki), Mitsubishi Materials Corporation (Head Office: Chiyoda-ku, Tokyo).
We sincerely apologize to the customer as well as the local authority and the local residents for great anxiety and inconvenience caused by the fire.
Currently, the fire at the NAS battery is in a lull by fire fighting, and we continuously exert efforts to get it under control through cooperation from the local fire station.
From now on, we, together with the manufacturer, NGK INSULATORS, LTD. (Head office: Nagoya-shi, Aichi), investigate the cause of the fire and discuss measures to prevent it from occurring again.
© Tokyo Electric Power Company Holdings, Inc.
