Arlington, Va.: The AES Corporation announced August 18 that its subsidiary, AES Energy Storage, has entered into two contracts with San Diego Gas and Electric (SDG&E) for two energy storage arrays totaling 37.5 MW, using its Advancion® energy storage solution at sites in San Diego County, California. The SDG&E-owned energy storage arrays will help to improve regional reliability and integrate greater amounts of renewable energy when operational by the end of January 2017.
The SDG&E Advancion arrays will be able to provide 37.5 MW of power for four continuous hours and serve as a 75 MW of flexible resource to the grid. The arrays will be installed at two SDG&E substation facilities: 30 MW in Escondido and 7.5 MW in El Cajon. Once completed, the Escondido array will be the largest battery-based energy storage project in operation in the United States.
AES has been deploying advanced battery-based energy storage onto electric grids since 2008, with more than three million megawatt-hours of delivered service across 136 MW of energy storage projects in four countries, and an additional 296 MW under construction or in late stage development.