AES’ Double Butte storage project is a proposed battery energy storage facility in Menifee, California that will provide a critical, cost-effective source of reliable power for the region’s electric grid.
Energy storage enables power generated during the day to be stored and delivered during periods of high demand, which helps stabilize the grid and reduce California’s reliance on fossil fuels. By delivering stored power when it is most needed, the Double Butte storage system will be critical to accelerating California’s transition to achieving 100% carbon-free energy by 2045.
Project overview
500 MW
2,000 MWh storage capacity
Enough stored energy to power nearly 375,000 California homes for four hours
Menifee, California
Project Details
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Containerized lithium-ion battery energy storage system
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27 acres of vacant land with adjacent existing industrial uses will host the project
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Features metal storage containers that house racks of battery modules equipped with insulation and robust safety monitoring and management systems
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Connects to the grid via nearby existing Southern California Edison Valley Substation
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AES is developing the project and will be the long-term owner and operator of the facility
Expected Project timeline
Economic and environmental benefits
Utilizes land near existing electric grid infrastructure, minimizing the need for long overhead transmission lines
Designed in accordance with the latest applicable codes, safety standards, security, lighting, landscaping and noise requirements
Economic benefits include new local tax revenue and local job creation during construction and operations
Visual simulations
Environmental and technical studies
The project will be reviewed under the California Environmental Quality Act. Environmental and technical studies for the project will include a Phase I Environmental Site Assessment, hydrology, geotechnical, cultural resources, land, topography, biological, wetlands, economic impact and other studies. AES will work with the relevant government and regulatory agencies to mitigate potential environmental impacts from the project.
Community impact and engagement
AES is committed to being a good neighbor and partner to the communities where our projects are located. This includes informing and engaging project stakeholders and the public throughout all phases of the project. AES also supports local contractors, community organizations and programs.