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Opening: California Long Beach Battery Storage Project Overview

May 22, 2025

AES California Battery Project and Modernized Gas Plant

Overview

  • Project Name: Alamitos Battery Energy Storage System (BESS)
  • Location: Alamitos Energy Center, Long Beach, California
  • Operator: AES Corporation
  • Capacity: 100MW / 400MWh
  • Goal: Support California's goal for 100% carbon-free electricity by 2045

Key Features

  • One of the world's largest lithium-ion battery projects
  • Provides electric system reliability and stability
  • Fluence (JV of AES Corporation and Siemens) supplied and integrated the storage system
  • Uses Fluence’s Advancion 5 battery storage equipment
  • Not directly paired with renewable generation but reduces need for natural gas peaker plants

Modernized Natural Gas Plant

  • Type: Combined Cycle Gas Turbine (CCGT) power plant
  • Capacity: 640MW
  • Benefits:
    • More efficient and flexible than older gas-fired units
    • Uses 70% less fresh water and does not use ocean water for cooling

Energy Storage and Market Role

  • The BESS serves as peaking capacity and provides ancillary services
  • Helps integrate more renewable energy into the local grid
  • Supports grid at times of peak demand
  • Capable of immediate power delivery to homes

Regulatory and Market Context

  • Part of California's initiative to procure 3.3GW of system reliability resources
  • A 20-year Power Purchase Agreement (PPA) with Southern California Edison (SCE)
  • AES won a competitive bid for the PPA in 2015

Industry Impact and Development

  • AES and the industry have scaled significantly since the initial agreement
  • Fluence has pre-booked significant orders, indicating market growth
  • Expansion includes a new project in Chile with 560MWh capacity

Images and Visuals

  • Various images showcase the project’s completion, facility interior, and battery systems

Conclusion

  • The combined battery and modernized natural gas facility at Alamitos marks a significant step in achieving cleaner, more reliable energy in California, contributing to broader carbon-free electricity goals by 2045.