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AEC Battery Energy Storage Project

On June 27, 2019, AES Alamitos broke ground on the AES Alamitos Battery Storage Project (BESS), a 400 megawatt-hour (MWh) battery-based energy storage system for Alamitos Energy Center (AEC) as part of a larger modernization and replacement project of the existing AES Alamitos Generating Station. The energy storage facility will provide up to 400 MWh of local energy to ensure power flexibility and reliability for Southern California Edison (SCE) customers, while helping the state meet its aggressive target of 100 percent clean energy by 2045.

The facility will provide power at times of peak demand and also support grid modernization, increase the integration of renewable energy, and lower costs and greenhouse gas emissions.

AES Southland was awarded a 20-year power purchase agreement (PPA) by SCE in 2014 to provide 100 MW of interconnected energy storage. It is part of a $2 billion repowering initiative in Long Beach to replace aging natural gas peakers with a combination of efficient combined-cycle gas capacity and battery energy storage, which is now a viable alternative to replace traditional thermal generation to meet peak power demands.