The Chino battery system was a jointly sponsored project by EPRI, the US DOE, and the International Lead Zinc Research Organization (ILZRO), with Southern California Edison (SCE) as the host utility. It was an early demonstration of a utility-scale battery energy storage system for multiple applications. At the time of its completion, this became the largest utility battery energy storage system in the world. It was not until the PREPA battery and later the Fairbanks battery systems were commissioned that this distinction was earned by these projects, in 1994 and 1999, respectively.

Lead-acid Battery