Fortress Power Envy 8kW Envy8 33.3A 240V All-in-One Whole Hybrid Home Solar Inverter
Fortress Power Envy 8kW Envy8 33.3A 240V All-in-One Whole Hybrid Home Solar Inverter
Fortress Power Envy 8kW Envy8 33.3A 240V All-in-One Whole Hybrid Home Solar Inverter
Fortress Power Envy 8kW Envy8 33.3A 240V All-in-One Whole Hybrid Home Solar Inverter
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Fortress Power Envy 8kW 33.3A 240V All-in-One Whole Home Hybrid Solar Inverter
Key Features
- Delivers up to 8kW off-grid or backup output power
- Max. 12kW PV power delivery to battery and AC output
- Supports 2 MPPTs with up to 13kW PV input
- Built-in 63A AC breakers for grid, generator, and load
- Integrated 250A DC battery breaker
- APsmart rapid shutdown transmitter included
- Compatible with 48V lithium and lead-acid batteries
- Supports up to 10 units in parallel
- Built-in color LCD touchscreen and Wi-Fi/RS485/CAN communication
- NEMA 4X/IP65 rated for indoor or outdoor use
Best Applications
- Whole-home backup power systems
- Residential off-grid and grid-tied solar systems
- Time-of-use and peak shaving configurations
- Zero export, virtual power plant, and microgrid-ready installations
Technology Highlight
The Fortress Power Envy 8K is a hybrid inverter combining PV, battery, and generator inputs into one compact unit. With dual MPPTs, rapid shutdown support, and smart load control features, it simplifies installation while enabling advanced energy management. Its onboard display, remote app connectivity, and safety protections ensure optimized performance and long-term reliability.
About Fortress Power
Fortress Power is a U.S.-based energy storage company known for its advanced lithium battery solutions and smart power electronics. Their products support both residential and commercial energy independence with high-performance, scalable systems.
Technical Specifications
| Specification | Envy 8K |
|---|---|
| Max. PV Input Power | 13,000W |
| Max. PV Power to Battery & AC | 12,000W |
| MPPTs / Strings per MPPT | 2 / 2 |
| Nominal Battery Voltage | 48V |
| Max. Battery Charge/Discharge | 167A / 8000W |
| Output Voltage (AC) | 120/240V |
| Output Power (Off-Grid) | 8000W |
| Max. Output Current | 33.3A @ 240V |
| Peak Power | 16kW (500ms) |
| Generator Port | 50A / 12kW |
| Switching Time | <20ms |
| Efficiency | Max 97.5%, CEC 96.5% |
| Enclosure Rating | NEMA 4X, IP65 |
| Dimensions | 29.5 × 20.5 × 11.23 in |
| Weight | 110 lbs |
| Communication | RS485 / Wi-Fi / CAN |
| Certifications | UL1741, UL1741SB, IEEE1547A, CEC |
| Warranty | 10 years |
Fortress Power System Design Tool
Plan Smarter. Build Better.
The Fortress Power System Design Tool is an intuitive online platform that helps you design and size complete energy storage systems using Fortress Power batteries and inverters. Whether you're working on a residential backup system, time-of-use optimization, or a full off-grid solution, this tool gives you accurate recommendations based on your energy goals and load profile.
Key Features:
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Quickly size battery banks and inverter systems
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Select from Fortress Power batteries and compatible inverters
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Supports grid-tied, hybrid, and off-grid applications
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Real-time load analysis and performance estimates
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Exportable system summary for quotes and permitting
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Ideal for installers, designers, and energy consultants
Why Use It:
Save time on design work, avoid costly misconfigurations, and present clean, professional system specs to your customers. The Fortress Design Tool ensures compatibility, reliability, and performance — from start to finish.
Click here to go to the design tool:
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Need Assistance?
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Why Buy From Us?
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Expert Support: Our team is here to guide you every step of the way.
Manufacturer-Backed Warranties: Enjoy peace of mind with the 10-year product warranty directly from the manufacturer.
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Join the many satisfied customers who have trusted us for their solar needs. Add to your cart now to secure your high-efficiency solar panels and take the next step towards sustainable energy!
FAQs
Is the Envy 8kW compatible with my solar panels?
Yes, the Envy 8kW is designed to work with a wide range of solar panels. Your installer will determine the best configuration based on your system requirements.
Do I need a battery to use the Envy 8K?
Yes, the Envy 8kW is a hybrid inverter designed to work with batteries for energy storage and backup power. It is optimized for use with Fortress Power batteries but may also support other compatible battery brands.
How do I monitor the performance of my Envy 8K?
The Envy 8kW connects to the Fortress Power monitoring platform via Wi-Fi or Ethernet, allowing you to track system performance, energy production, and battery status through a web portal or mobile app.
What happens if there is a power outage?
If a battery is connected, the Envy 8kW will automatically switch to backup mode, supplying power to essential loads in your home. The system can seamlessly transition between grid, solar, and battery power to ensure continuous operation.
How do I maintain the Envy 8kW?
The inverter requires minimal maintenance. It’s recommended to check for error messages periodically, ensure proper ventilation, and have your installer perform routine system inspections if needed.
What is the efficiency of the Envy 8kW?
The Envy 8K features high efficiency. Please refer to the official Fortress Power datasheet for exact efficiency ratings.
What are the input and output voltage ranges?
The Envy 8kW supports a 120/240V split-phase output. For detailed electrical specifications, including input voltage range and current ratings, consult the official Fortress Power documentation.
What communication protocols does the Envy 8K use?
The inverter supports Wi-Fi, Ethernet, and CAN communication for system monitoring and integration with battery management systems. Additional protocol support may be available—refer to the manufacturer’s specifications for details.
