Dive Summary:

• Pacific Gas and Electric (PG&E), California’s largest utility, is now testing an innovative energy storage system using batteries made by Japan’s NGK Insulators Ltd. to balance power on the grid.
• The Yerba Buena Battery Energy Storage System pilot costs $18.1M and involves a 4MW, sodium-sulfur battery that can store energy for more than six hours.
• The system will balance energy supply and demand, support the integration of renewable energy, and improve power quality, PG& E says in a statement.

From the article:
“The San Francisco-based company operates a similar 2-megawatt battery system near its Vaca-Dixon solar plant in Solano County, California, Moreno said.
The Yerba Buena project was funded in part by a $3.3 million grant from the California Energy Commission.”