Fortress Power | Envy Inverter 8 KW 10 Year Warranty
Fortress Power | Envy Inverter 8 KW 10 Year Warranty is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
We offer fast and reliable shipping across the continental U.S., with free shipping available on most orders (exclusions may apply based on brand and product type). Orders are typically processed within 1–2 business days and transit time is usually 4–7 business days. Larger items may ship via freight and require a scheduled curbside delivery. Please ensure your contact details are accurate at checkout. For questions about delivery timelines, shipping eligibility, or special requests, feel free to contact us directly. See Policy.
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Do You Offer Financing?
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Price Match Guarantee
Price Match Guarantee
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The Fortress Power Envy 8 kW and 10 kW systems are integrated, whole-home inverter solutions designed to deliver reliable backup and energy management. When paired with Fortress Power battery options such as the eFlex 5.4 kWh, eVault MAX 18.5 kWh, or LFP-10 MAX, the Envy provides a 90A AC pass-through capable of supplying up to 8 kW (33.3A at 240V) or 10 kW (41.6A at 240V) of backup power for an entire home.
The Envy includes a built-in generator connection and supports both AC- and DC-coupled configurations, making it suitable for grid-tied or off-grid operation. Dual MPPT channels allow connection to solar arrays up to 13 kW for the Envy 8 kW model or up to 15 kW for the Envy 10 kW model. For added safety and faster setup, the system comes with an integrated APsmart module-level rapid shutdown transmitter and shutdown switch, along with internal AC and DC breakers. System performance and status can be monitored remotely through an online monitoring platform.
Key Highlights
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IP65-rated enclosure suitable for indoor or outdoor installation
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Dual MPPT inputs supporting:
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Up to 13 kW PV input (Envy 8 kW)
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Up to 15 kW PV input (Envy 10 kW)
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Supports both AC- and DC-coupled system designs
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Integrated 90A automatic transfer switch
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Built-in generator input for backup flexibility
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Parallel operation supported for up to five units
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Remote monitoring via mobile and web application
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Full-color LCD touchscreen interface
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Three-phase compatibility planned for a future release
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 management
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Virtual power plant participation



