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    Seguro Energy Storage

    PRMF storage
    Seguro energy storage project

    AES' Seguro storage project is a proposed battery energy storage project in north San Diego County, near Escondido, California that will provide a critical, cost-effective source of reliable power to support the region’s electric grid.

    By delivering stored power when it is most needed, the Seguro storage project provides flexibility that will be critical to helping the region meet its decarbonization goals and California achieve 100% carbon-free energy by 2045.

    Project overview


    400 MW

    1,600 MWh capacity

    Residential icon

    Enough stored energy to power nearly 300,000 California homes for four hours


    Supports electric grid reliability by providing a flexible energy resource

    Project details

    Seguro Storage

    • 400 megawatts (MW), 1600 megawatt hours (MWh) capacity

    • Containerized lithium-ion battery energy storage system (BESS)

    • 22 acres of privately held land site location

    • Features metal storage containers that will house racks of battery modules equipped with insulation and robust safety monitoring and management systems

    • Feeds into the nearby existing San Diego Gas & Electric (SDG&E) Escondido Substation

    • AES will be the long-term owner and operator of the facility

    Seguro energy storage map

    Project timeline

    Seguro storage timeline

    Environmental & economic benefits

    Energy storage

    Utilizes land near existing electric grid infrastructure to minimize need for new overhead transmission lines

    Energy storage

    Designed in accordance with the latest applicable codes, safety standards, security, lighting, landscaping and noise requirements

    Energy storage employee

    Expected economic benefits include new tax revenue and local jobs during construction and operations

    Environmental and technical studies

    The project will be reviewed under the California Environmental Quality Act (CEQA). 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 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.

    Seguro energy storage employee 2



    Phone: 760-546-2228

    If you are interested in receiving updates about AES’ Seguro storage project, please fill out and submit this form.

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