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Fortress Power

Fortress Power – Advanced Lithium Battery Storage for Home and Business

Take control of your energy with Fortress Power lithium battery systems, engineered for reliable whole-home backup, solar self-consumption, and scalable off-grid solutions. Built with premium-grade LiFePO₄ cells, Fortress batteries deliver long life, high efficiency, and unmatched safety — ideal for residential, commercial, or industrial energy storage.

Whether paired with a solar system or used as a standalone backup solution, Fortress Power ensures peace of mind with robust performance and U.S.-based support.

Browse our Fortress Power collection to build a smarter, safer energy storage system today.

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    Fortress Power

    Fortress Power | eForce eWay and Base for AC and DC wire management and floor mount

    $1,180.99
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    Fortress Power

    Fortress Power FlexRack Combining Rack for eFlex 5.4 kWh Lithium Batteries

    $2,030.00
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    Fortress Power

    Fortress Envy 12kW Hybrid Inverter, 4 eFlex G2 5.4 kWh Lithium Batteries, Durarack Enclosure and Guardian Battery Monitoring Bundle

    $16,757.99
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    Fortress Power

    Fortress Power Flex Tower Inverter + Battery Enclosure

    $2,830.00
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