Fortress Power Envy True 12kW Inverter

Whole-Home Solar Storage Inverter | All-in-One Solution

The Fortress Power Envy True 12kW is an advanced, whole-home inverter designed for seamless integration with Fortress Power batteries—including the eFlex 5.4 kWh, eVault MAX 18.5 kWh, and LFP-10 MAX. Delivering powerful, flexible energy management, this all-in-one inverter supports both residential and small commercial applications with a 200A AC passthrough, built-in rapid shutdown, and versatile coupling options (AC, DC, or AC/DC combined).

Top Features:

• 12kW Continuous Output – Whole-home or small business backup with 50A @ 240V or 10.4kW @ 208V

• 200A AC Passthrough – Power large loads and enable seamless whole-home backup

• 3 MPPT Inputs – Supports up to 21kW PV array for maximum solar harvest

• Built-In Generator Input – AC/DC coupling with grid-tied and off-grid functionality

• Rapid Shutdown Ready – Integrated APsmart transmitter and shutdown button for code compliance

• IP65 Rated – Suitable for indoor or outdoor installations

• Smart Monitoring – Local and remote access via app, plus wireless fleet monitoring and programming

• Color LCD Touchscreen – Intuitive display and controls

Applications:

• Backup Power

• Off-Grid Systems

• Time-of-Use Optimization

• Zero Export Systems

• Peak Shaving

• (Future) Demand Response Integration

Scalability & System Integration:

• Supports up to 10 inverters (120kW total AC output)

• Compatible with single split-phase 120/240V, 120/208V, and 3-phase 208V systems

Specifications Overview:

PV Input (DC Side):

• Max DC Input: 21,000W (3 MPPTs: 12kW / 7kW / 7kW)

• DC Voltage Range: 100–600V (MPPT range: 230–500V)

• Max Current: 25A / 15A / 15A

AC Output/Input (Grid & Load):

• Continuous Grid Output: 12kW

• Max Load Output (with grid/generator): 48kW

• Voltage Options: 120/240V or 120/208V, single or 3-phase

• Seamless Transfer Time

Off-Grid Output:

• Continuous Output: 12kW

• Surge Capacity:

  • 14kW for 10 min

  • 16kW for 5 min

  • 20kW for 500 ms

Battery Compatibility:

• Battery Voltage: 48V

• Compatible with Lithium & Lead-Acid

• Max Charge/Discharge: 250A / 12kW

Efficiency:

• MPPT Efficiency: 99.9%

• Max Efficiency: 97.5%

• CEC Efficiency: 96.5%

Build & Certifications:

• Dimensions: 31.1" x 20.5" x 10.4"

• Weight: 127 lbs (58 kg)

• Cooling: Active fan

• Communication: RS485 / Wi-Fi / CAN

• Certifications: UL1741, UL1741SB, IEEE1547A, Rule 21, CEC, NOM, FCC Class B, SGIP, and more

• Warranty: 10-Year Manufacturer Warranty

The Envy True 12kW inverter combines power, flexibility, and smart design—ideal for future-proof solar + storage installations. Whether you're building a new off-grid system or upgrading an existing one, Envy provides seamless energy management for modern homes and businesses.