This 4 MW Sodium Sulfur battery system is located at the research facility for HGST, Inc. in San Jose, CA. The system supports power quality and reliability for customers on the distribution feeder, has the ability to island the HGST facility, and can be used for studying various battery functionalities such as load shaping and smoothing of intermittent resources. PG&E, working in coordination with Electric Power Research Institute via a grant from the California Energy Commission, is studying the system’s performance and functionalities and making these reports available to the public.

DC Systems provided the grid interconnection and utility control software that enables the various operating modes.

Sodium-sulfur Battery