Fortress Power | Envy Inverter 12 kW
Fortress Power | Envy Inverter 12 kW is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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The Fortress Power Envy True 12 is a fully integrated 12 kW inverter designed to support whole-home energy backup and advanced power management. When combined with Fortress Power battery options such as the eFlex 5.4 kWh, eVault MAX 18.5 kWh, or LFP-10 MAX, the Envy True 12 delivers a 200A AC pass-through capable of providing up to 12 kW (50A at 240V) of backup power for an entire home.
This system includes a built-in generator connection and supports both AC- and DC-coupled solar configurations, making it suitable for grid-tied or off-grid operation. With three MPPT channels, the Envy True 12 can support solar arrays up to 21 kW. To streamline installation and commissioning, the inverter is equipped with an integrated APsmart module-level rapid shutdown transmitter and shutdown switch, along with pre-installed AC and DC protection breakers. System access and performance monitoring are available through an online monitoring platform from anywhere.
Key Capabilities
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200A AC pass-through designed for whole-home backup applications
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Three MPPT inputs supporting solar arrays up to 21 kW
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Compatible with both AC- and DC-coupled system designs
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IP65-rated enclosure for indoor or outdoor installation
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Integrated generator input for additional backup options
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Parallel operation supported for up to five units
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Remote system monitoring via web and mobile app
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Full-color LCD touchscreen interface
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Three-phase compatibility planned for a future update
Supported Use Cases
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Backup power
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Off-grid operation
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Zero-export configurations
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Time-based energy optimization
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Peak load reduction
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Demand response integration (future feature)



